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* [Bug c++/86429] [8/9 Regression] lambda capture breaks constexpr-ness
[not found] <bug-86429-4@http.gcc.gnu.org/bugzilla/>
@ 2019-03-25 19:20 ` jason at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: jason at gcc dot gnu.org @ 2019-03-25 19:20 UTC (permalink / raw)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86429
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jason at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
>From gcc-bugs-return-638429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 19:58:41 2019
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/71861] [7/8/9 Regression] [F03] ICE in write_symbol(): bad module symbol
Date: Mon, 25 Mar 2019 19:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71861
--- Comment #12 from janus at gcc dot gnu.org ---
Author: janus
Date: Mon Mar 25 19:58:04 2019
New Revision: 269922
URL: https://gcc.gnu.org/viewcvs?rev=269922&root=gcc&view=rev
Log:
fix PR 71861
2019-03-25 Janus Weil <janus@gcc.gnu.org>
PR fortran/71861
* symbol.c (check_conflict): ABSTRACT attribute conflicts with
INTRINSIC attribute.
2019-03-25 Janus Weil <janus@gcc.gnu.org>
PR fortran/71861
* gfortran.dg/interface_abstract_5.f90: New test case.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/interface_abstract_5.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/symbol.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/71861] [7/8/9 Regression] [F03] ICE in write_symbol(): bad module symbol
Date: Mon, 25 Mar 2019 19:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71861
janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #13 from janus at gcc dot gnu.org ---
Fixed on trunk and the 7 and 8 branches. Closing.
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86429] [8/9 Regression] lambda capture breaks constexpr-ness
Date: Mon, 25 Mar 2019 19:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86429
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Reduced:
struct A
{
int i;
constexpr int f(const int&) const { return i; }
};
void g()
{
constexpr A a = { 42 };
[&](auto x) {
constexpr auto y = a.f(x);
}(24);
}
>From gcc-bugs-return-638432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 20:31:49 2019
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89820] New: Returning empty type produces unnecessary instructions
Date: Mon, 25 Mar 2019 20:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89820
Bug ID: 89820
Summary: Returning empty type produces unnecessary instructions
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: antoshkka at gmail dot com
Target Milestone: ---
Consider the following code
struct my_type_impl {};
my_type_impl foo0() { return {}; }
my_type_impl foo1() { my_type_impl tmp; return tmp; }
For `foo0` and `foo1` GCC generates the following assembly:
xor eax, eax
ret
However xoring the `eax` seems unnecessary and some of the other compilers just
generate the `ret` instruction.
The additional `xor` instruction could significantly increase the code size for
generic C++ programs. For example in Bug 89819 and Bug 89816 each of he 36 jump
table entries has that additional instruction.
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Subject: [Bug middle-end/89820] Returning empty type produces unnecessary instructions
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 88529.
*** This bug has been marked as a duplicate of bug 88529 ***
>From gcc-bugs-return-638434-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 20:36:28 2019
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Subject: [Bug target/88529] G++ clears the return register on x86_64 when returning an empty class
Date: Mon, 25 Mar 2019 20:36:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |antoshkka at gmail dot com
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89820 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638435-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 20:37:24 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88529] G++ clears the return register on x86_64 when returning an empty class
Date: Mon, 25 Mar 2019 20:37:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There might be another bug that talks about this similar thing.
Confirmed.
>From gcc-bugs-return-638436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 20:44:14 2019
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From: "paolo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85013] [7/8/9 Regression] <stdin>:1:41: internal compiler error: in wide_int_to_tree_1, at tree.c:1567 0x4097e2b wide_int_to_tree_1
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--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Mar 25 20:43:36 2019
New Revision: 269923
URL: https://gcc.gnu.org/viewcvs?rev=269923&root=gcc&view=rev
Log:
/cp
2019-03-25 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84661
PR c++/85013
* parser.c (cp_parser_binary_expression): Don't call cp_fully_fold
to undo the disabling of warnings.
/testsuite
2019-03-25 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84661
PR c++/85013
* g++.dg/concepts/pr84661.C: New.
* g++.dg/torture/pr85013.C: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/concepts/pr84661.C
trunk/gcc/testsuite/g++.dg/torture/pr85013.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84661] [7/8/9 Regression] internal compiler error: Segmentation fault (strip_array_types())
Date: Mon, 25 Mar 2019 20:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84661
--- Comment #6 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Mar 25 20:43:36 2019
New Revision: 269923
URL: https://gcc.gnu.org/viewcvs?rev=269923&root=gcc&view=rev
Log:
/cp
2019-03-25 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84661
PR c++/85013
* parser.c (cp_parser_binary_expression): Don't call cp_fully_fold
to undo the disabling of warnings.
/testsuite
2019-03-25 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84661
PR c++/85013
* g++.dg/concepts/pr84661.C: New.
* g++.dg/torture/pr85013.C: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/concepts/pr84661.C
trunk/gcc/testsuite/g++.dg/torture/pr85013.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84661] [7/8 Regression] internal compiler error: Segmentation fault (strip_array_types())
Date: Mon, 25 Mar 2019 20:46:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] internal |[7/8 Regression] internal
|compiler error: |compiler error:
|Segmentation fault |Segmentation fault
|(strip_array_types()) |(strip_array_types())
--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk so far.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85013] [7/8 Regression] <stdin>:1:41: internal compiler error: in wide_int_to_tree_1, at tree.c:1567 0x4097e2b wide_int_to_tree_1
Date: Mon, 25 Mar 2019 20:47:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] |[7/8 Regression]
|<stdin>:1:41: internal |<stdin>:1:41: internal
|compiler error: in |compiler error: in
|wide_int_to_tree_1, at |wide_int_to_tree_1, at
|tree.c:1567 0x4097e2b |tree.c:1567 0x4097e2b
|wide_int_to_tree_1 |wide_int_to_tree_1
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk so far.
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Subject: [Bug target/88529] G++ clears the return register on x86_64 when returning an empty class
Date: Mon, 25 Mar 2019 20:51:00 -0000
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
related to PR20408 (but not the same as the patch which Jason attached is
different)
>From gcc-bugs-return-638441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 20:53:32 2019
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Subject: [Bug c++/87327] [8/9 Regression] Calling member functions on captured constexpr variables "is not a constant expression"
Date: Mon, 25 Mar 2019 20:53:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
>From gcc-bugs-return-638442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 21:10:58 2019
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Subject: [Bug c++/70515] Nested lambdas causing invalid captured pointers on some platforms
Date: Mon, 25 Mar 2019 21:10:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jason at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
lambda2 captures lambda1 by reference, and is then copied into func. When
their block ends lambda1 no longer exists, so the reference in func is
dangling, and so invoking it has undefined behavior.
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Subject: [Bug c++/54367] [meta-bug] lambda expressions
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Bug 54367 depends on bug 70515, which changed state.
Bug 70515 Summary: Nested lambdas causing invalid captured pointers on some platforms
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70515
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89676] [7/8/9 Regression] Redundant moves for long long shift on 32bit x86
Date: Mon, 25 Mar 2019 21:15:00 -0000
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--- Comment #9 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Mon Mar 25 21:14:40 2019
New Revision: 269924
URL: https://gcc.gnu.org/viewcvs?rev=269924&root=gcc&view=rev
Log:
2019-03-25 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/89676
* lra-constraints.c (curr_insn_transform): Do match reload for
early clobbers when the match was successful only for different
registers.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
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Subject: [Bug c++/79367] ICE with decltype of VLA in lambda
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
Summary|ICE on valid C++11 code on |ICE with decltype of VLA in
|x86_64-linux-gnu: |lambda
|verify_gimple failed |
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
This is not valid C++11 code: b (and thus c) are VLAs, which are not part of
any C++ standard. But we should still accept it.
G++ currently has trouble with outer VLA types that aren't simple "array of
runtime bound" from the cancelled Arrays TS.
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Subject: [Bug debug/86964] [7/8/9 Regression] Too many debug symbols included, especially for extern globals
Date: Mon, 25 Mar 2019 21:19:00 -0000
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--- Comment #9 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Mon Mar 25 21:19:09 2019
New Revision: 269925
URL: https://gcc.gnu.org/viewcvs?rev=269925&root=gcc&view=rev
Log:
PR debug/86964
* dwarf2out.c (premark_used_variables): New function.
(prune_unused_types_walk): Do not mark not premarked external
variables.
(prune_unused_types): Call premark_used_variables.
* gcc.dg/debug/dwarf2/pr86964.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/debug/dwarf2/pr86964.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89815] [7/8/9 Regression] wrong code with -Og -march=armv4t -fno-tree-ccp -fno-tree-fre
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Plain dup.
*** This bug has been marked as a duplicate of bug 89435 ***
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
Date: Mon, 25 Mar 2019 22:17:00 -0000
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--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
*** Bug 89815 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 22:57:37 2019
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed in r269927.
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Mar 25 22:56:40 2019
New Revision: 269927
URL: https://gcc.gnu.org/viewcvs?rev=269927&root=gcc&view=rev
Log:
PR c/89812 - incorrect maximum in error: requested alignment '536870912'
exceeds maximum 2147483648
gcc/c-family/ChangeLog:
PR c/89812
* c-common.c (check_user_alignment): Rename local. Correct maximum
alignment in diagnostic. Avoid assuming argument fits in SHWI,
convert it to UHWI when it fits.
gcc/testsuite/ChangeLog:
PR c/89812
* gcc.dg/attr-aligned-3.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/attr-aligned-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/85537] [7/8/9 Regression] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Mon, 25 Mar 2019 23:05:00 -0000
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--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
r237104 fails for me, testing r237008.
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Subject: [Bug c/83855] [performance] Improve cse optimization for insn with inout ops
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |segher at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The internals manual explains this:
Note that @code{match_dup} should not be used to tell the compiler that
a particular register is being used for two operands (example:
@code{add} that adds one register to another; the second register is
both an input operand and the output operand). Use a matching
constraint (@pxref{Simple Constraints}) for those. @code{match_dup} is for the
cases where one
operand is used in two places in the template, such as an instruction
that computes both a quotient and a remainder, where the opcode takes
two input operands but the RTL template has to refer to each of those
twice; once for the quotient pattern and once for the remainder pattern.
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Subject: [Bug fortran/85537] Invalid memory reference at runtime when calling subroutine through procedure pointer
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |fortran
Summary|[7/8/9 Regression] Invalid |Invalid memory reference at
|memory reference at runtime |runtime when calling
|when calling subroutine |subroutine through
|through procedure pointer |procedure pointer
--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #11)
> r237104 fails for me, testing r237008.
r237007 also fails, as do earlier versions of the compiler.
Not a regression then, but rather a design fault - seems like
we need to do some magic to tell the middle end that we could
access global variables (i.e. make sure that %r10 contains the
right address).
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Subject: [Bug libstdc++/70692] No warning when std::function<const int&(...)> binds a reference to a temporary
Date: Mon, 25 Mar 2019 23:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70692
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This should get addressed more thoroughly by https://wg21.link/p0932
>From gcc-bugs-return-638455-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 23:34:14 2019
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From: "law at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/88347] ICE in begin_move_insn, at sched-ebb.c:175
Date: Mon, 25 Mar 2019 23:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88347
--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Mon Mar 25 23:33:36 2019
New Revision: 269928
URL: https://gcc.gnu.org/viewcvs?rev=269928&root=gcc&view=rev
Log:
PR rtl-optimization/88347
PR rtl-optimization/88423
* sched-deps.c (sched_analyze_insn): Take into account that for
tablejumps the barrier appears after a label and a jump_table_data.
* gcc.c-torture/compile/pr88347.c: New test.
* gcc.c-torture/compile/pr88423.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr88347.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr88423.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sched-deps.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 23:34:14 2019
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Subject: [Bug rtl-optimization/88423] [9 Regression] ICE in begin_move_insn, at sched-ebb.c:175
Date: Mon, 25 Mar 2019 23:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88423
--- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Mon Mar 25 23:33:36 2019
New Revision: 269928
URL: https://gcc.gnu.org/viewcvs?rev=269928&root=gcc&view=rev
Log:
PR rtl-optimization/88347
PR rtl-optimization/88423
* sched-deps.c (sched_analyze_insn): Take into account that for
tablejumps the barrier appears after a label and a jump_table_data.
* gcc.c-torture/compile/pr88347.c: New test.
* gcc.c-torture/compile/pr88423.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr88347.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr88423.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sched-deps.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638457-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 00:01:50 2019
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
Date: Tue, 26 Mar 2019 00:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89808
--- Comment #8 from sduguay <s_gcc_bugzilla at binarez dot com> ---
(In reply to Jonathan Wakely from comment #6)
> In any case, I agree with confirming this as a bug: all warnings should be
> controllable by a -Wxxx option.
>
> Adding such an option is quite easy, and a good first contribution to GCC.
> For an example of adding a new option see https://gcc.gnu.org/r192968
I was going to propose looking into it. I'll try to find some time.
>From gcc-bugs-return-638458-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 00:21:00 2019
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Subject: [Bug fortran/89821] New: Get a SIGFPE on a simple test of a kind=real128 variable with -ffpe-trap=invalid switch
Date: Tue, 26 Mar 2019 00:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89821
Bug ID: 89821
Summary: Get a SIGFPE on a simple test of a kind=real128
variable with -ffpe-trap=invalid switch
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: urbanjost at comcast dot net
Target Milestone: ---
Created attachment 46019
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46019&action=edit
test program that fails if -ffpe-trap=invalid is present on kind=real128 test
but ok on kind=real32 and kind=real64 tests even with switch on
Although there may be IEEE methods that are now preferred with some compilers
the simplified code in the attachment shows a method for testing for a NaN
value that I believe is standard and has worked with 32-bit and 64-bit REAL
variables in more than one programming environment including gfortran(1) with
and without the -ffpe-trap=invalid switch on the gfortran compile. The test
fails on kind=real128 variables (on Cygwin, at least) with the error
signal SIGFPE: Floating-point exception - erroneous arithmetic operation.
but the same kind of test works without an error on kind=real32 and kind=real64
variables, as it always has up to this point. I do not think the test is an
arithmetic operation and should be allowed even with the -ffpe-trap=invalid
switch present, as it does for kind=real32 and kind=real128 floating point
variables. Works without any VISIBLE problem without the -ffpe-trap=invalid
switch.
>From gcc-bugs-return-638459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 00:42:46 2019
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/88347] ICE in begin_move_insn, at sched-ebb.c:175
Date: Tue, 26 Mar 2019 00:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88347
Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |law at redhat dot com
Resolution|--- |FIXED
--- Comment #6 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on the trunk.
>From gcc-bugs-return-638460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 01:25:01 2019
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Subject: [Bug target/89822] New: self mov on x86_64 and not optimized-out sub on ARM/ARM64 in a jump table switch
Date: Tue, 26 Mar 2019 01:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89822
Bug ID: 89822
Summary: self mov on x86_64 and not optimized-out sub on
ARM/ARM64 in a jump table switch
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
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Host: x86_64
Target: x86_64/ARM/ARM64
Created attachment 46020
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46020&action=edit
A reproducer
A simple switch that will be generated as a jump table:
int f1();
int f2();
int f3();
int f4();
int f5();
int foo(int i)
{
switch (i) {
case 1: return f1();
case 2: return f2();
case 3: return f3();
case 4: return f4();
case 5: return f5();
}
__builtin_unreachable();
}
Compiles into (first two rows):
i686:
movl 4(%esp), %eax
jmp *.L4(,%eax,4)
x86_64:
movl %edi, %edi
jmp *.L4(,%rdi,8)
ARM:
sub r0, r0, #1
cmp r0, #16
ARM64:
sub w0, w0, #1
cmp w0, 16
I am not sure why on ARM there is even cmp+bls. https://godbolt.org/z/hi66cD
Possibly a useful info:
GCC x86_64
4.1 mov %edi, %eax
4.4 mov %edi, %edi
4.6 movl %edi, %edi
4.8 bogus jump became jump to ret
8.1 jump to ret removed, but self mov is still there
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Subject: [Bug c++/82643] lambda capture breaks constexpr-ness of non-static const constexpr member call on non-constexpr value/variable
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jason at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89809] movzwl is not utilized when uint16_t is loaded with bit-shifts (while memcpy does)
Date: Tue, 26 Mar 2019 06:47:00 -0000
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JunMa <JunMa at linux dot alibaba.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |JunMa at linux dot alibaba.com
--- Comment #2 from JunMa <JunMa at linux dot alibaba.com> ---
g++ pr89809.cpp -O3 -fdump-tree-store-merging:
foo (const unsigned char * p)
{
unsigned char _1;
signed short _2;
unsigned char _3;
int _4;
int _5;
signed short _6;
signed short _7;
uint16_t _10;
<bb 2> [local count: 1073741824]:
_1 = *p_9(D);
_2 = (signed short) _1;
_3 = MEM[(const unsigned char *)p_9(D) + 1B];
_4 = (int) _3;
_5 = _4 << 8;
_6 = (signed short) _5;
_7 = _2 | _6;
_10 = (uint16_t) _7;
return _10;
}
looks like gcc generates too many type conversions, this prevents the
optimization.
>From gcc-bugs-return-638463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 07:26:24 2019
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Subject: [Bug target/89822] self mov on x86_64 and not optimized-out sub on ARM/ARM64 in a jump table switch
Date: Tue, 26 Mar 2019 07:26:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Nikita Kniazev from comment #0)
> 8.1 jump to ret removed, but self mov is still there
It's not a self move, but zero extend.
movl %edi, %edi # 6 [c=1 l=2] *zero_extendsidi2/3
>From gcc-bugs-return-638464-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 07:53:35 2019
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From: "JunMa at linux dot alibaba.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89809] movzwl is not utilized when uint16_t is loaded with bit-shifts (while memcpy does)
Date: Tue, 26 Mar 2019 07:53:00 -0000
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--- Comment #3 from JunMa <JunMa at linux dot alibaba.com> ---
the stmt generated by fe has some issue, in 004t.original dump file:
return <retval> = (uint16_t) ((signed short) *p | (signed short) ((int) *(p +
1) << 8));
However, the return stmt should be:
return <retval> = (uint16_t) (((int)(uint16_t) *p) | ((int)(uint16_t) *(p + 1)
<< 8));
then gcc will optimize it.
>From gcc-bugs-return-638465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 07:54:38 2019
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Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
Date: Tue, 26 Mar 2019 07:54:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 26 07:54:02 2019
New Revision: 269933
URL: https://gcc.gnu.org/viewcvs?rev=269933&root=gcc&view=rev
Log:
PR c++/89796
* semantics.c (finish_omp_atomic): Add warning_sentinel for
-Wunused-value around finish_expr_stmt call.
* g++.dg/gomp/pr89796.C: New test.
* gcc.dg/gomp/pr89796.c: New test.
Added:
trunk/gcc/testsuite/g++.dg/gomp/pr89796.C
trunk/gcc/testsuite/gcc.dg/gomp/pr89796.c
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89821] Get a SIGFPE on a simple test of a kind=real128 variable with -ffpe-trap=invalid switch
Date: Tue, 26 Mar 2019 08:08:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The invalid exception is raised here:
Program received signal SIGFPE, Arithmetic exception.
0x0000000000400cde in demo_nan () at t.f90:17
17 if ( (r32<=0.0_real32) .or. (r32>=0.0_real32) )then
0x0000000000400cd2 <+416>: movss -0x134(%rbp),%xmm1
0x0000000000400cda <+424>: pxor %xmm0,%xmm0
=> 0x0000000000400cde <+428>: comiss %xmm1,%xmm0
where %xmm1 is NaN.
(gdb) p $xmm1
$2 = ( v4_float = (nan(0x400000), 0, 0, 0),
so not sure what you are expecting? Is Fortran supposed to use the
C equivalent of isgreaterequal (aka comparisons that do not raise
exceptions?)
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Subject: [Bug libstdc++/89819] [9 Regression] std::variant operators regressed since GCC 8.3
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug tree-optimization/54779] split FRAME variables back into pieces
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Attachment #42158|0 |1
is obsolete| |
--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Created attachment 46021
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46021&action=edit
Updated implementation
For a 8-based compiler.
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Subject: [Bug tree-optimization/54779] split FRAME variables back into pieces
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Do you have a GCC10 implementation that could be submitted in stage1, or has
this been reviewed already earlier?
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Subject: [Bug c++/62181] [C/C++] Expected new warning: "adding 'char' to a string does not append to the string" [-Wstring-plus-int]
Date: Tue, 26 Mar 2019 09:27:00 -0000
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--- Comment #18 from Manuel López-Ibáñez <lopezibanez at gmail dot com> ---
A large patch will often get lost in comments and revisions unless the
submitter is very insistent and committed. If you want to get this moving,
my advice would be to split out the smallest piece possible (string + char
literal) and just submit that for review. Once that is committed, then look
for the next smallest step and repeat.
>From gcc-bugs-return-638471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 09:34:24 2019
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From: "dongjianqiang2 at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/88739] [7 Regression] Big-endian union bug
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--- Comment #58 from John Dong <dongjianqiang2 at huawei dot com> ---
Created attachment 46022
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46022&action=edit
fix the union bug on 7.3.0
>From gcc-bugs-return-638472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 09:35:10 2019
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/54779] split FRAME variables back into pieces
Date: Tue, 26 Mar 2019 09:35:00 -0000
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--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Do you have a GCC10 implementation that could be submitted in stage1, or has
> this been reviewed already earlier?
I should have one in a few weeks, but this indeed was reviewed and rejected
earlier. The rationale given was that this should be done during the SRA pass
instead, but I disagree because I don't want it to be subject to the (complex)
heuristics used by the SRA pass.
>From gcc-bugs-return-638473-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 09:36:48 2019
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Subject: [Bug tree-optimization/88739] [7 Regression] Big-endian union bug
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--- Comment #59 from John Dong <dongjianqiang2 at huawei dot com> ---
(In reply to John Dong from comment #58)
> Created attachment 46022 [details]
> fix the union bug on 7.3.0
hi, I tried to fix the bug when expanding. is it OK?
>From gcc-bugs-return-638474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 09:47:23 2019
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From: "goeran at uddeborg dot se" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/89823] New: Composed message only partially translatable
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89823
Bug ID: 89823
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In d/dmd/expressionsem.c there is this piece of code:
> const char *s = exp->op == TOKplusplus ? "increment" : "decrement";
> exp->error("cannot post-%s array slice '%s', use pre-%s instead", s, exp->e1->toChars(), s);
The string "cannot post-%s …" will be extracted for translation, but the
inserted words, "increment" and "decrement", will not.
At a minimum, these words need to be marked for translation too. Better is
probably to make it two complete messages. For Swedish it would work to
compose the sentence this way, but I suspect there are languages further
removed from English where it would be hard.
>From gcc-bugs-return-638475-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 09:49:47 2019
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Subject: [Bug tree-optimization/88739] [7 Regression] Big-endian union bug
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--- Comment #60 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 26 Mar 2019, dongjianqiang2 at huawei dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88739
>
> --- Comment #59 from John Dong <dongjianqiang2 at huawei dot com> ---
> (In reply to John Dong from comment #58)
> > Created attachment 46022 [details]
> > fix the union bug on 7.3.0
>
> hi, I tried to fix the bug when expanding. is it OK?
No, the fix is going to be backported soon.
>From gcc-bugs-return-638476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 09:58:35 2019
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Subject: [Bug d/89823] Composed message only partially translatable
Date: Tue, 26 Mar 2019 09:58:00 -0000
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--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Göran Uddeborg from comment #0)
> In d/dmd/expressionsem.c there is this piece of code:
>
> > const char *s = exp->op == TOKplusplus ? "increment" : "decrement";
> > exp->error("cannot post-%s array slice '%s', use pre-%s instead", s, exp->e1->toChars(), s);
>
> The string "cannot post-%s …" will be extracted for translation, but the
> inserted words, "increment" and "decrement", will not.
>
> At a minimum, these words need to be marked for translation too. Better is
> probably to make it two complete messages. For Swedish it would work to
> compose the sentence this way, but I suspect there are languages further
> removed from English where it would be hard.
The dmd sources should all be in the EXCLUDES file, I must have missed one when
grepping for the sources that have may emit an error.
>From gcc-bugs-return-638477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 10:17:01 2019
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Subject: [Bug c++/84598] [8/9 Regression] internal compiler error: Segmentation fault (cp_default_conversion())
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--- Comment #5 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Mar 26 10:16:13 2019
New Revision: 269936
URL: https://gcc.gnu.org/viewcvs?rev=269936&root=gcc&view=rev
Log:
2019-03-26 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84598
* g++.dg/ext/pr84598.C: New.
Added:
trunk/gcc/testsuite/g++.dg/ext/pr84598.C
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 10:17:08 2019
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89824] New: Variant jump table reserves space for __variant_cookie twice
Date: Tue, 26 Mar 2019 10:17:00 -0000
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Bug ID: 89824
Summary: Variant jump table reserves space for __variant_cookie
twice
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Space for the `__variant_cookie` state is already reserved in _Multi_array
`_Multi_array<_Tp, __rest...> _M_arr[__first + __do_cookie];`.
Additionally reserving it inside the `__gen_vtable` produces jump table with
gaps https://godbolt.org/z/Vx_wEU.
Fix: remove the `+ (is_same_v<_Result_type, __variant_cookie> ? 1 : 0)` from
`__gen_vtable`.
This removes zeros from jump table and slightly reduces the binary size
https://godbolt.org/z/gyo0-j
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Subject: [Bug c++/84598] [8 Regression] internal compiler error: Segmentation fault (cp_default_conversion())
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|vegard.nossum at gmail dot com |
Summary|[8/9 Regression] internal |[8 Regression] internal
|compiler error: |compiler error:
|Segmentation fault |Segmentation fault
|(cp_default_conversion()) |(cp_default_conversion())
--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in trunk. I added the testcase and removing the regression
marker. Note: there are duplicate diagnostics issues, but are well known.
>From gcc-bugs-return-638481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 10:22:28 2019
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Subject: [Bug libstdc++/89824] Variant jump table reserves space for __variant_cookie twice
Date: Tue, 26 Mar 2019 10:22:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-26
Ever confirmed|0 |1
>From gcc-bugs-return-638480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 10:22:00 2019
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Subject: [Bug rtl-optimization/89676] [7/8 Regression] Redundant moves for long long shift on 32bit x86
Date: Tue, 26 Mar 2019 10:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |vmakarov at gcc dot gnu.org
Summary|[7/8/9 Regression] |[7/8 Regression] Redundant
|Redundant moves for long |moves for long long shift
|long shift on 32bit x86 |on 32bit x86
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-638482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 10:52:19 2019
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Subject: [Bug libstdc++/89825] New: Jump table for variant visitation could be shortened for never empty variants
Date: Tue, 26 Mar 2019 10:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89825
Bug ID: 89825
Summary: Jump table for variant visitation could be shortened
for never empty variants
Product: gcc
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The `__do_cookie` computation in `_Multi_array` seems suboptimal. There are
variant types that are never empty, so they never need the cookie value at all.
`_Variant_storage<true, _Types...>::_M_valid()` already use that knowledge to
always return `true`. The same logic could be used for the `__do_cookie`.
Pseudo-code:
+ template<typename _Variant>
+ struct _Never_empty;
+ template<typename... _Types>
+ struct _Never_empty<variant<_Types...>>
+ {
+ static constexpr bool _S_value = (is_trivially_copyable_v<_Types> && ...);
+ };
template<typename _Ret,
typename _Visitor,
typename... _Variants,
size_t __first, size_t... __rest>
struct _Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>
{
+ static constexpr size_t __index = sizeof...(_Variants) -
sizeof...(__rest) - 1;
+ using _Variant_current = __remove_cvref_t<typename _Nth_type<__index,
_Variants...>::type>;
static constexpr int __do_cookie =
- is_same_v<_Ret, __variant_cookie> ? 1 : 0;
+ is_same_v<_Ret, __variant_cookie> &&
_Never_empty<_Variant_current>::_S_value ? 1 : 0;
using _Tp = _Ret(*)(_Visitor, _Variants...);
template<typename... _Args>
constexpr const _Tp&
_M_access(size_t __first_index, _Args... __rest_indices) const
{ return _M_arr[__first_index +
__do_cookie]._M_access(__rest_indices...); }
_Multi_array<_Tp, __rest...> _M_arr[__first + __do_cookie];
};
template<size_t... __var_indices>
static constexpr void
_S_apply_all_alts(_Array_type& __vtable,
std::index_sequence<__var_indices...>)
{
- if constexpr (is_same_v<_Result_type, __variant_cookie>)
+ if constexpr (is_same_v<_Result_type, __variant_cookie>
+ && !_Never_empty<remove_cv_t<_Next>>::_S_value)
(_S_apply_single_alt<true, __var_indices>(
__vtable._M_arr[__var_indices + 1],
&(__vtable._M_arr[0])), ...);
else
(_S_apply_single_alt<false, __var_indices>(
__vtable._M_arr[__var_indices]), ...);
}
The above patch reduces jump table size on up to 2*sizeof...(_Types) for binary
visitations.
>From gcc-bugs-return-638483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 10:53:45 2019
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Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
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--- Comment #1 from Antony Polukhin <antoshkka at gmail dot com> ---
There's a typo in proposed solution: it should be `&& !_Never_empty` in
`_Multi_array`.
>From gcc-bugs-return-638485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:13:15 2019
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Subject: [Bug tree-optimization/81740] [7/8 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 11:12:37 2019
New Revision: 269938
URL: https://gcc.gnu.org/viewcvs?rev=269938&root=gcc&view=rev
Log:
2019-03-26 Bin Cheng <bin.cheng@linux.alibaba.com>
PR tree-optimization/81740
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence):
In case of outer loop vectorization, check for backward dependence
at the inner loop if outer loop dependence is reversed.
* gcc.dg/vect/pr81740-1.c: New testcase.
* gcc.dg/vect/pr81740-2.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr81740-1.c
trunk/gcc/testsuite/gcc.dg/vect/pr81740-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-data-refs.c
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Subject: [Bug tree-optimization/81740] [7/8 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] wrong |[7/8 Regression] wrong code
|code at -O3 in both 32-bit |at -O3 in both 32-bit and
|and 64-bit modes on |64-bit modes on
|x86_64-linux-gnu |x86_64-linux-gnu
Known to fail| |8.3.0
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
>From gcc-bugs-return-638486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:16:01 2019
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Subject: [Bug tree-optimization/81740] [7/8 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|amker at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine for backporting.
>From gcc-bugs-return-638487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:18:49 2019
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Subject: [Bug tree-optimization/88105] [7 Regression] Possibly infinite loop in pass_dominator::execute
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88105
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
Known to fail|7.3.0 |7.4.0
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-638489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:19:04 2019
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Subject: [Bug middle-end/86554] [7 Regression] Incorrect code generation with signed/unsigned comparison
Date: Tue, 26 Mar 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86554
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 11:18:26 2019
New Revision: 269939
URL: https://gcc.gnu.org/viewcvs?rev=269939&root=gcc&view=rev
Log:
2019-03-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/86554
* tree-ssa-sccvn.c (visit_nary_op): When value-numbering to
expressions with different overflow behavior make sure there's an
available expression on the path.
* gcc.dg/torture/pr86554-1.c: New testcase.
* gcc.dg/torture/pr86554-2.c: Likewise.
2018-11-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/88105
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.
* gcc.dg/gomp/pr88105.c: New testcase.
2018-03-08 Richard Biener <rguenther@suse.de>
PR middle-end/84552
* tree-scalar-evolution.c: Include tree-into-ssa.h.
(follow_copies_to_constant): Do not follow SSA names registered
for update.
* gcc.dg/graphite/pr84552.c: New testcase.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.dg/gomp/pr88105.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/graphite/pr84552.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr86554-1.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr86554-2.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-scalar-evolution.c
branches/gcc-7-branch/gcc/tree-ssa-dom.c
branches/gcc-7-branch/gcc/tree-ssa-sccvn.c
>From gcc-bugs-return-638492-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:19:35 2019
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Subject: [Bug tree-optimization/88240] Potential optimization bug: invalid pre-load of floating-point value could cause SIGFPE-underflow if value is integer
Date: Tue, 26 Mar 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88240
Bug 88240 depends on bug 86554, which changed state.
Bug 86554 Summary: [7 Regression] Incorrect code generation with signed/unsigned comparison
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86554
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-638488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:19:03 2019
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Subject: [Bug tree-optimization/88105] [7 Regression] Possibly infinite loop in pass_dominator::execute
Date: Tue, 26 Mar 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88105
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 11:18:26 2019
New Revision: 269939
URL: https://gcc.gnu.org/viewcvs?rev=269939&root=gcc&view=rev
Log:
2019-03-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/86554
* tree-ssa-sccvn.c (visit_nary_op): When value-numbering to
expressions with different overflow behavior make sure there's an
available expression on the path.
* gcc.dg/torture/pr86554-1.c: New testcase.
* gcc.dg/torture/pr86554-2.c: Likewise.
2018-11-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/88105
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.
* gcc.dg/gomp/pr88105.c: New testcase.
2018-03-08 Richard Biener <rguenther@suse.de>
PR middle-end/84552
* tree-scalar-evolution.c: Include tree-into-ssa.h.
(follow_copies_to_constant): Do not follow SSA names registered
for update.
* gcc.dg/graphite/pr84552.c: New testcase.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.dg/gomp/pr88105.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/graphite/pr84552.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr86554-1.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr86554-2.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-scalar-evolution.c
branches/gcc-7-branch/gcc/tree-ssa-dom.c
branches/gcc-7-branch/gcc/tree-ssa-sccvn.c
>From gcc-bugs-return-638491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:19:34 2019
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Subject: [Bug middle-end/86554] [7 Regression] Incorrect code generation with signed/unsigned comparison
Date: Tue, 26 Mar 2019 11:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
Known to fail| |7.4.0
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-638490-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:19:04 2019
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Subject: [Bug tree-optimization/84552] [7 Regression] Compile time hog w/ -O2 -floop-nest-optimize -fno-tree-copy-prop -fno-tree-fre -fno-tree-loop-ivcanon
Date: Tue, 26 Mar 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84552
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 11:18:26 2019
New Revision: 269939
URL: https://gcc.gnu.org/viewcvs?rev=269939&root=gcc&view=rev
Log:
2019-03-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/86554
* tree-ssa-sccvn.c (visit_nary_op): When value-numbering to
expressions with different overflow behavior make sure there's an
available expression on the path.
* gcc.dg/torture/pr86554-1.c: New testcase.
* gcc.dg/torture/pr86554-2.c: Likewise.
2018-11-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/88105
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.
* gcc.dg/gomp/pr88105.c: New testcase.
2018-03-08 Richard Biener <rguenther@suse.de>
PR middle-end/84552
* tree-scalar-evolution.c: Include tree-into-ssa.h.
(follow_copies_to_constant): Do not follow SSA names registered
for update.
* gcc.dg/graphite/pr84552.c: New testcase.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.dg/gomp/pr88105.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/graphite/pr84552.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr86554-1.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr86554-2.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-scalar-evolution.c
branches/gcc-7-branch/gcc/tree-ssa-dom.c
branches/gcc-7-branch/gcc/tree-ssa-sccvn.c
>From gcc-bugs-return-638493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:20:17 2019
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Subject: [Bug tree-optimization/84552] [7 Regression] Compile time hog w/ -O2 -floop-nest-optimize -fno-tree-copy-prop -fno-tree-fre -fno-tree-loop-ivcanon
Date: Tue, 26 Mar 2019 11:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
Known to fail| |7.4.0
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-638494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 11:28:53 2019
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Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84201
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
For some reason, I can't reproduce that now on Haswell with both GCC 8 and 9.
I'll retry with a Zen machine.
>From gcc-bugs-return-638495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:03:56 2019
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From: "belyshev at depni dot sinp.msu.ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/61448] ice on profiledbootstrap with -O2 -flto -fuse-linker-plugin
Date: Tue, 26 Mar 2019 12:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61448
Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |belyshev at depni dot sinp.msu.ru
Resolution|--- |WORKSFORME
--- Comment #1 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> ---
This bug was never confirmed, but the similar configuration
(--enable-checking=release --with-arch=native --with-build-config=bootstrap-lto
profiledbootstrap) works for me with current trunk on intel x86-64. So this
bug was probably fixed at some point (long time ago).
Moreover, neither 4.8 nor 4.9 are supported anymore.
Closing as worksforme, please re-open if needed.
>From gcc-bugs-return-638496-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:07:59 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Tue, 26 Mar 2019 12:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501
--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Andrey Drobyshev from comment #26)
> > I would like to ask, has the idea of adding an artificial object linked with
> > -fsanitize=address early on the link line which would register artificial
> > dummy variables in at least the most common data sections been considered
> > and rejected?
> > I mean, it should at least for large libraries mean significantly fewer
> > dummy variables, on the other side, when mixing sanitized and non-sanitized
> > objects within one binary/library (having sanitized ones first and then say
> > linking a static library non-sanitized would be fine) would mean catching up
> > fewer issues.
>
> Could you describe how you imagine this solution in more details? Wouldn't
> it require us to patch the linker along with compiler?
Exactly like we are doing it already in other cases, look at libgcc/crtstuff.c
which e.g. adds (or depending on configuration used to add) snippets of various
sections early when compiled as crtbegin.o or crtbeginS.o etc. and snippets of
various sections late when compiled as crtend.o etc.
So, it would be a matter of adding another object like asan_preinit.o, that
would contain registered empty globals in a couple of most common data
sections, be compiled with -fpic and link it in in LIBASAN_EARLY_SPEC, unlike
libasan_preinit regardless of -shared or not.
>From gcc-bugs-return-638497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:08:04 2019
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From: "ville at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Tue, 26 Mar 2019 12:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89816
--- Comment #11 from ville at gcc dot gnu.org ---
Author: ville
Date: Tue Mar 26 12:07:26 2019
New Revision: 269940
URL: https://gcc.gnu.org/viewcvs?rev=269940&root=gcc&view=rev
Log:
PR libstdc++/89816
Fix based on a suggestion by Antony Polukhin.
* include/std/variant (__variant_construct): Capture a pointer
to the storage and visit just one variant.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/variant
>From gcc-bugs-return-638499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:17:58 2019
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89826] New: [9 Regression] wrong code at -O1
Date: Tue, 26 Mar 2019 12:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89826
Bug ID: 89826
Summary: [9 Regression] wrong code at -O1
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 46023
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46023&action=edit
reduced testcase
This seems to be a recent regression.
Output:
$ armv7a-hardfloat-linux-gnueabi-gcc -O testcase.c -static
$ ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
The upper 32 bits seem to be garbage - r1 is used uninitialized.
@@ -29,6 +29,7 @@
ldr ip, [r3, #4]
cmp r0, #0
mov r3, #0
+ mov r1, r3
mvneq r3, r2
mvneq r1, ip
subs r4, r2, r3
should fix the assembly.
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269932-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269932-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190326 (experimental) (GCC)
>From gcc-bugs-return-638498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:17:25 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
Date: Tue, 26 Mar 2019 12:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89825
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-26
Ever confirmed|0 |1
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. we can't use this patch without a copyright assignment for GCC:
https://gcc.gnu.org/contribute.html
Posting patches we can't use is actually more harmful than helpful, because to
ensure we don't infringe your copyright we either have to avoid even reading
the patch, or try to solve the problem differently. Describing a suggeasted
solution without an actual patch is fine.
Would you be willing to complete a copyright assignment for contributions to
GCC?
>From gcc-bugs-return-638500-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:20:32 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89827] New: [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Tue, 26 Mar 2019 12:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89827
Bug ID: 89827
Summary: [8/9 Regression] ICE: in convert_op, at
config/i386/i386.c:2098 with -Os -maes
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
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Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: i686-pc-linux-gnu
Created attachment 46024
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46024&action=edit
reduced testcase
Compiler output:
$ i686-pc-linux-gnu-gcc -Os -maes testcase.c
during RTL pass: stv
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in convert_op, at
config/i386/i386.c:2098
7 | }
| ^
0x7303d3 dimode_scalar_chain::convert_op(rtx_def**, rtx_insn*)
/repo/gcc-trunk/gcc/config/i386/i386.c:2098
0x1198987 dimode_scalar_chain::convert_insn(rtx_insn*)
/repo/gcc-trunk/gcc/config/i386/i386.c:2168
0x1198da4 scalar_chain::convert()
/repo/gcc-trunk/gcc/config/i386/i386.c:2408
0x1198da4 scalar_chain::convert()
/repo/gcc-trunk/gcc/config/i386/i386.c:2392
0x119985c convert_scalars_to_vector
/repo/gcc-trunk/gcc/config/i386/i386.c:2474
0x119985c execute
/repo/gcc-trunk/gcc/config/i386/i386.c:2592
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ i686-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269932-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.1/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-sysroot=/usr/i686-pc-linux-gnu
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld
--with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269932-checking-yes-rtl-df-extra-i686
Thread model: posix
gcc version 9.0.1 20190326 (experimental) (GCC)
>From gcc-bugs-return-638501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:31:42 2019
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Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #2)
> Would you be willing to complete a copyright assignment for contributions to
> GCC?
And then ideally, make lots more contributions :-)
>From gcc-bugs-return-638502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:39:08 2019
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
Date: Tue, 26 Mar 2019 12:39:00 -0000
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--- Comment #4 from Antony Polukhin <antoshkka at gmail dot com> ---
> Would you be willing to complete a copyright assignment for contributions to
> GCC?
Yes, I can do that. Please send the instructions to my email.
>From gcc-bugs-return-638503-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:42:35 2019
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From: "ville at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89824] Variant jump table reserves space for __variant_cookie twice
Date: Tue, 26 Mar 2019 12:42:00 -0000
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--- Comment #1 from ville at gcc dot gnu.org ---
Author: ville
Date: Tue Mar 26 12:41:59 2019
New Revision: 269941
URL: https://gcc.gnu.org/viewcvs?rev=269941&root=gcc&view=rev
Log:
PR libstdc++/89824
Fix based on a suggestion by Antony Polukhin.
* include/std/variant (__gen_vtable): Don't reserve an
additional table slot, _Multi_array already does that.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/variant
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From: "belyshev at depni dot sinp.msu.ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/59528] Profiledbootstrap should use stage1 compiler during stagefeedback
Date: Tue, 26 Mar 2019 12:49:00 -0000
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Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |belyshev at depni dot sinp.msu.ru
Resolution|--- |FIXED
Target Milestone|--- |8.0
--- Comment #4 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> ---
(In reply to Richard Biener from comment #1)
> Can you point to a version where we did that?
Before r101263, I think.
Anyhow, this is fixed since introduction of 4-stage profiledbootstrap
(r249366), because final stagefeedback binary is built by stagetrain.
Closing as fixed.
>From gcc-bugs-return-638504-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 12:49:06 2019
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Subject: [Bug target/89827] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Tue, 26 Mar 2019 12:49:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-26
CC| |hjl.tools at gmail dot com
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Actually a STV problem, needs "-O2 -msse2 -mstv".
CC added.
>From gcc-bugs-return-638506-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:14:01 2019
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Subject: =?UTF-8?B?W0J1ZyBjLzg5ODEyXSBbOSBSZWdyZXNzaW9uXSBpbmNvcnJlY3QgbWF4aW11?= =?UTF-8?B?bSBpbiBlcnJvcjogcmVxdWVzdGVkIGFsaWdubWVudCDigJg1MzY4NzA5MTI=?= =?UTF-8?B?4oCZIGV4Y2VlZHMgbWF4aW11bSAyMTQ3NDgzNjQ4?Date: Tue, 26 Mar 2019 13:14:00 -0000
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
The new test fails on arm with these additional error message:
testsuite/gcc.dg/attr-aligned-3.c:6:47: error: ISO C90 does not support 'long
long' [-Wlong-long]
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Subject: [Bug tree-optimization/89223] [7 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Tue, 26 Mar 2019 13:19:00 -0000
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 13:18:23 2019
New Revision: 269942
URL: https://gcc.gnu.org/viewcvs?rev=269942&root=gcc&view=rev
Log:
2019-02-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
* gcc.c-torture/execute/pr88739.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-data-ref.c
branches/gcc-7-branch/gcc/tree-ssa-loop-split.c
branches/gcc-7-branch/gcc/tree-ssa-sccvn.c
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/88739] [7 Regression] Big-endian union bug
Date: Tue, 26 Mar 2019 13:19:00 -0000
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--- Comment #61 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 13:18:23 2019
New Revision: 269942
URL: https://gcc.gnu.org/viewcvs?rev=269942&root=gcc&view=rev
Log:
2019-02-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
* gcc.c-torture/execute/pr88739.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-data-ref.c
branches/gcc-7-branch/gcc/tree-ssa-loop-split.c
branches/gcc-7-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug tree-optimization/89253] [8 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566
Date: Tue, 26 Mar 2019 13:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89253
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 26 13:18:23 2019
New Revision: 269942
URL: https://gcc.gnu.org/viewcvs?rev=269942&root=gcc&view=rev
Log:
2019-02-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
* gcc.c-torture/execute/pr88739.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-data-ref.c
branches/gcc-7-branch/gcc/tree-ssa-loop-split.c
branches/gcc-7-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug regression/89733] [7/8/9 Regression] False positive -Wuninitialized in C++14+ mode
Date: Tue, 26 Mar 2019 13:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89733
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'm certainly seeing the uninitialized loads in the IL though.
typename Lexer::iterator_type iter = lex.begin(first, last);
in tokenize_and_parse calls
template <typename Iterator>
iterator_type begin(Iterator& first, Iterator const& last
, char_type const* initial_state = 0) const
{ return this->lexer_type::begin(first, last, initial_state); }
which calls
template <typename IteratorData>
iterator(IteratorData const& iterdata_, base_iterator_type& first
, base_iterator_type const& last, char_type const* state = 0)
: base_type(functor_type(unique_functor_type()
, shared_functor_type(iterdata_, first, last)))
{
set_state(map_state(state));
}
which calls:
template<typename _U1, typename _U2, typename
enable_if<_PCCP::template
_MoveConstructiblePair<_U1, _U2>()
&& _PCCP::template
_ImplicitlyMoveConvertiblePair<_U1, _U2>(),
bool>::type=true>
constexpr pair(_U1&& __x, _U2&& __y)
: first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y)) { }
which calls:
template <typename Iterator, typename HasState, typename TokenValue>
class data<Iterator, mpl::true_, HasState, TokenValue>
: public data<Iterator, mpl::false_, HasState, TokenValue>
{
's defaulted copy constructor, which would like to copy end_ among other
non-static data members, but that is uninitialized.
It can be seen after the inlining already:
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:300:13] MEM[(struct
&)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.5608
49] ={v} {CLOBBER};
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:221:13] MEM[(struct
&)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.5608
49] ={v} {CLOBBER};
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:57:13] MEM[(struct
&)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.56084
9] ={v} {CLOBBER};
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69] MEM[(struct data
*)
[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849].first_ =
first_3(D);
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69] _87 =
last_407(D);
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69] MEM[(struct data
*)
[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849].last_ =
_87;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:59:38] _88 =
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:59:38] MEM[(const st
ruct iterator_data_type
&)[./boost/spirit/home/lex/lexer/lexertl/lexer.hpp:205:34]
&iterator_data].state_machine_;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69] MEM[(struct data
*)
[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61]
&D.560849].state_machine_ = _88;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:60:30] _89 =
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:60:30] MEM[(const st
ruct iterator_data_type
&)[./boost/spirit/home/lex/lexer/lexertl/lexer.hpp:205:34]
&iterator_data].rules_;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69] MEM[(struct data
*)
[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849].rules_ =
_89;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:50] _90 =
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:50] MEM[(const
struct internals &)_88]._seen_BOL_assertion;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:61:69] MEM[(struct data
*)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849].bol_ =
_90;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:223:25]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:223:25] MEM[(struct
data *)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61]
&D.560849].state_ = 0;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:302:32] _91 =
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:302:32] MEM[(const
struct iterator_data_type
&)[./boost/spirit/home/lex/lexer/lexertl/lexer.hpp:205:34]
&iterator_data].actions_;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51] MEM[(struct
data *)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61]
&D.560849].actions_ = _91;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51] MEM[(struct
data *)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61]
&D.560849].hold_ = 0B;
[./boost/variant/variant.hpp:1848:5] MEM[(struct
&)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849 + 72]
={v} {CLOBBER};
[./boost/type_traits/aligned_storage.hpp:108:5] MEM[(struct
&)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849 + 80]
={v} {CLOBBER};
MEM[(struct value_T
*)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849 + 80B] =
_87;
MEM[(struct value_T
*)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849 + 88B] =
_87;
[./boost/variant/variant.hpp:1434:9] MEM[(which_t
*)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560849 + 72B] =
0;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51] MEM[(struct
data *)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61]
&D.560849].has_value_ = 0;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:304:51] MEM[(struct
data *)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61]
&D.560849].has_hold_ = 0;
[/usr/include/c++/8/bits/stl_pair.h:330:12] MEM[(struct
&)[./boost/spirit/home/lex/lexer/lexertl/iterator.hpp:85:61] &D.560850] ={v}
{CLOBBER};
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] MEM[(struct
&)&D.560850 + 8] ={v} {CLOBBER};
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] MEM[(struct
data *)&D.560850 + 8B].D.418885 = MEM[(const struct data *)&D.560849].D.418885;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] _100 =
MEM[(const struct data &)&D.560849].actions_;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] MEM[(struct
data
*)&D.560850 + 8B].actions_ = _100;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] _101 =
MEM[(const struct data &)&D.560849].hold_;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] MEM[(struct
data
*)&D.560850 + 8B].hold_ = _101;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] _102 =
MEM[(const struct data &)&D.560849].end_;
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15]
[./boost/spirit/home/lex/lexer/lexertl/functor_data.hpp:276:15] MEM[(struct
data *)&D.560850 + 8B].end_ = _102;
actions_ and hold_ are initialized, but end_ is not.
>From gcc-bugs-return-638507-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:19:00 2019
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Subject: [Bug c/89828] New: Inernal compiler error on -fno-omit-frame-pointer
Date: Tue, 26 Mar 2019 13:19:00 -0000
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Bug ID: 89828
Summary: Inernal compiler error on -fno-omit-frame-pointer
Product: gcc
Version: 9.0
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Created attachment 46025
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46025&action=edit
problem happened source code
I got following errors.
$ rx-elf-gcc -c -O2 -g -fno-omit-frame-pointer core.c
during RTL pass: dwarf2
kernel/sched/core.c: In function '__schedule_bug':
kernel/sched/core.c:3277:1: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1183
3277 | }
| ^
0x75efc9 dwarf2out_frame_debug_adjust_cfa
../../gcc/dwarf2cfi.c:1183
0x75efc9 dwarf2out_frame_debug
../../gcc/dwarf2cfi.c:2079
0x75efc9 scan_insn_after
../../gcc/dwarf2cfi.c:2511
0x75f188 scan_trace
../../gcc/dwarf2cfi.c:2678
0x75fdca create_cfi_notes
../../gcc/dwarf2cfi.c:2722
0x75fdca execute_dwarf2_frame
../../gcc/dwarf2cfi.c:3086
0x75fdca execute
../../gcc/dwarf2cfi.c:3574
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
rx-elf-gcc -c -O2 -g -fomit-frame-pointer core.c
works fine.
>From gcc-bugs-return-638512-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:20:32 2019
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Subject: [Bug tree-optimization/88739] [7 Regression] Big-endian union bug
Date: Tue, 26 Mar 2019 13:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
Known to fail| |7.4.0
--- Comment #62 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89223] [7 Regression] internal compiler error: in int_cst_value, at tree.c:11226
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
Known to fail| |7.4.0
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/88389] -flto -g -gsplit-dwarf is broken
Date: Tue, 26 Mar 2019 13:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |antonio.di.monaco at sap dot com
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 88386 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638514-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:23:03 2019
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Subject: [Bug lto/88386] LTRANS DWO files are not removed when using LTO + Split Dwarf
Date: Tue, 26 Mar 2019 13:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed by duping.
*** This bug has been marked as a duplicate of bug 88389 ***
>From gcc-bugs-return-638516-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:40:26 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
Date: Tue, 26 Mar 2019 13:40:00 -0000
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--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #8)
> For some reason, I can't reproduce that now on Haswell with both GCC 8 and
> 9. I'll retry with a Zen machine.
The reason is that I had adjusted tolerance for the test from 1e-10 to 1e-9.
>From gcc-bugs-return-638517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:47:59 2019
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Subject: [Bug target/89827] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Tue, 26 Mar 2019 13:47:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-638518-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:49:05 2019
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Subject: [Bug rtl-optimization/89826] [9 Regression] wrong code at -O1
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |law at gcc dot gnu.org
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
regcprop changes maybe
>From gcc-bugs-return-638519-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 13:49:30 2019
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89827] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Tue, 26 Mar 2019 13:49:00 -0000
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
We need something like this patch:
--cut here--
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index b5f20f1597ed..3ea545732dfd 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2040,6 +2040,7 @@ dimode_scalar_chain::convert_reg (unsigned regno)
emit_insn_before (seq, insn);
+ XEXP (src, 0) = replace_with_subreg (XEXP (src, 0), reg, reg);
XEXP (src, 1) = gen_rtx_SUBREG (DImode, tmp2, 0);
}
else if (!MEM_P (dst) || !REG_P (src))
--cut here--
>From gcc-bugs-return-638520-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 14:12:45 2019
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From: "ville.voutilainen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
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>From gcc-bugs-return-638521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 14:44:13 2019
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From: "belyshev at depni dot sinp.msu.ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89829] New: incorrect profile data is used during profiledbootstrap
Date: Tue, 26 Mar 2019 14:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89829
Bug ID: 89829
Summary: incorrect profile data is used during
profiledbootstrap
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Reporter: belyshev at depni dot sinp.msu.ru
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Looking at the *.gcda timestamps, I noticed that incorrect data (the one from
stageprofile libgcc build) is used, and correct one (from stagetrain) is
discarded.
The fix is just to revert r254150 which effectively undid 4-stage
profiledbootstrap to a previous status quo where only libgcc training data was
used.
Also note that the r254150 confusion probably stems from the fact that there
are two stagefeedback-start:: rules in the Makefile.tpl, where the first one is
generated from stage[+id+]-start:: template. The corresponding recipes are
executed both, and they are not independent as the first one renames directory
structure by doing 'make stage'. This (ab)use of double-colon rules is not
recommended by the GNU make documentation, see
https://www.gnu.org/software/make/manual/html_node/Double_002dColon.html#Double_002dColon
.
>From gcc-bugs-return-638522-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 14:52:27 2019
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Subject: [Bug c++/81757] function reference on nonnull and noexcept
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Patrick Moran <patrick.a.moran at gmail dot com> changed:
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--- Comment #1 from Patrick Moran <patrick.a.moran at gmail dot com> ---
I returned to check on this bug and it appears this no longer occurs in either
the 7.2.0 release nor in 8.3.0. Closing this since it was fixed.
>From gcc-bugs-return-638523-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 14:54:24 2019
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Subject: [Bug regression/89733] [7/8/9 Regression] False positive -Wuninitialized in C++14+ mode
Date: Tue, 26 Mar 2019 14:54:00 -0000
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--- Comment #4 from Nikita Kniazev <nok.raven at gmail dot com> ---
So the warning triggers intentionally in copy/move even if the value actually
not read anywhere in the user code?
>From gcc-bugs-return-638524-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:01:15 2019
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From: "ville at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
Date: Tue, 26 Mar 2019 15:01:00 -0000
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--- Comment #5 from ville at gcc dot gnu.org ---
Author: ville
Date: Tue Mar 26 15:00:05 2019
New Revision: 269947
URL: https://gcc.gnu.org/viewcvs?rev=269947&root=gcc&view=rev
Log:
PR libstdc++/89825
Fix based on a suggestion by Antony Polukhin.
* include/std/variant (_Extra_visit_slot_needed): New.
(_Multi_array): Use it.
(_S_apply_all_alts): Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/variant
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Subject: [Bug rtl-optimization/89826] [9 Regression] wrong code at -O1
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
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>From gcc-bugs-return-638525-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:04:15 2019
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Subject: [Bug regression/89733] [7/8/9 Regression] False positive -Wuninitialized in C++14+ mode
Date: Tue, 26 Mar 2019 15:04:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The warning triggers when the warning pass sees uninitialized uses in the IL
(and quite complex code doesn't prove that it is not actually impossible at
runtime (predicate aware analysis).
You are using -O1, so fewer optimizations happen, haven't tried if it goes away
with -O2.
>From gcc-bugs-return-638527-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:05:52 2019
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Subject: [Bug rtl-optimization/89826] [9 Regression] wrong code at -O1
Date: Tue, 26 Mar 2019 15:05:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes, started with r269896:
+deferring deletion of insn with uid = 50.
+deferring rescan insn with uid = 54.
insn 55: replaced reg 3 with 0
+deferring rescan insn with uid = 55.
+deferring rescan insn with uid = 55.
+starting the processing of deferred insns
+verify found no changes in insn with uid = 54.
rescanning insn with uid = 55.
+ending the processing of deferred insns
+df_analyze called
+df_worklist_dataflow_doublequeue: n_basic_blocks 3 n_edges 2 count 3 ( 1)
+deferring deletion of insn with uid = 54.
+starting the processing of deferred insns
+ending the processing of deferred insns
+df_analyze called
+df_worklist_dataflow_doublequeue: n_basic_blocks 3 n_edges 2 count 3 ( 1)
-(insn 49 9 50 2 (set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
+(insn 49 9 12 2 (set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(const_int 0 [0])) "pr89826.c":9:14 181 {*arm_movsi_insn}
(nil))
-(insn 50 49 12 2 (set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
- (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])) "pr89826.c":9:14 181
{*arm_movsi_insn}
- (expr_list:REG_DEAD (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
- (expr_list:REG_UNUSED (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
- (nil))))
-(insn 12 50 13 2 (cond_exec (eq (reg:CC 100 cc)
+(insn 12 49 13 2 (cond_exec (eq (reg:CC 100 cc)
(const_int 0 [0]))
(set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(not:SI (reg:SI 2 r2 [orig:124 a.0_1 ] [124])))) "pr89826.c":9:14
3805 {*p *arm_one_cmplsi2}
(nil))
(insn 13 12 39 2 (cond_exec (eq (reg:CC 100 cc)
(const_int 0 [0]))
(set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(not:SI (reg:SI 12 ip [orig:125 a.0_1+4 ] [125]))))
"pr89826.c":9:14 3805 {*p *arm_one_cmplsi2}
- (nil))
+ (expr_list:REG_DEAD (reg:CC 100 cc)
+ (nil)))
(insn 39 13 40 2 (parallel [
(set (reg:CC 100 cc)
(compare:CC (reg:SI 2 r2 [orig:124 a.0_1 ] [124])
(reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])))
(set (reg:SI 4 r4 [orig:111 _2 ] [111])
(minus:SI (reg:SI 2 r2 [orig:124 a.0_1 ] [124])
(reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])))
]) "pr89826.c":9:5 28 {subsi3_compare1}
(expr_list:REG_DEAD (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(expr_list:REG_DEAD (reg:SI 2 r2 [orig:124 a.0_1 ] [124])
(nil))))
>From gcc-bugs-return-638528-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:14:48 2019
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Subject: [Bug rtl-optimization/89826] [9 Regression] wrong code at -O1
Date: Tue, 26 Mar 2019 15:14:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That REG_UNUSED note on r1 looks weird.
In postreload_jump we have:
(insn 49 11 50 3 (set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(const_int 0 [0])) "pr89826.c":9:14 181 {*arm_movsi_insn}
(expr_list:REG_EQUAL (const_int 0 [0])
(nil)))
(insn 50 49 12 3 (set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(const_int 0 [0])) "pr89826.c":9:14 181 {*arm_movsi_insn}
(expr_list:REG_EQUAL (const_int 0 [0])
(nil)))
(insn 12 50 13 3 (set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(not:SI (reg:SI 2 r2 [orig:124 a.0_1 ] [124]))) "pr89826.c":9:14 156
{*arm_one_cmplsi2}
(nil))
(insn 13 12 37 3 (set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(not:SI (reg:SI 12 ip [orig:125 a.0_1+4 ] [125]))) "pr89826.c":9:14 156
{*arm_one_cmplsi2}
(nil))
which looks normal, but contains non-DCEd code (that was there since subreg
pass
that lowered:
(insn 35 11 12 3 (set (reg:DI 114 [ iftmp.1_5 ])
(const_int 0 [0])) "pr89826.c":9:14 -1
(nil))
(insn 12 35 13 3 (set (subreg:SI (reg:DI 114 [ iftmp.1_5 ]) 0)
(not:SI (subreg:SI (reg:DI 110 [ a.0_1 ]) 0))) "pr89826.c":9:14 156
{*arm_one_cmplsi2}
(nil))
(insn 13 12 37 3 (set (subreg:SI (reg:DI 114 [ iftmp.1_5 ]) 4)
(not:SI (subreg:SI (reg:DI 110 [ a.0_1 ]) 4))) "pr89826.c":9:14 156
{*arm_one_cmplsi2}
(nil))
).
In jump2 we have:
(insn 50 49 12 3 (set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])) "pr89826.c":9:14 181
{*arm_movsi_insn}
(expr_list:REG_DEAD (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(expr_list:REG_UNUSED (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(expr_list:REG_EQUAL (const_int 0 [0])
(nil)))))
(insn 12 50 13 3 (set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(not:SI (reg:SI 2 r2 [orig:124 a.0_1 ] [124]))) "pr89826.c":9:14 156
{*arm_one_cmplsi2}
(nil))
(insn 13 12 37 3 (set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(not:SI (reg:SI 12 ip [orig:125 a.0_1+4 ] [125]))) "pr89826.c":9:14 156
{*arm_one_cmplsi2}
(nil))
that still has the dead code in there and makes through REG_UNUSED clear it is
unused.
But then ce3 turns it into:
(insn 49 9 50 2 (set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(const_int 0 [0])) "pr89826.c":9:14 181 {*arm_movsi_insn}
(nil))
(insn 50 49 12 2 (set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])) "pr89826.c":9:14 181
{*arm_movsi_insn}
(expr_list:REG_DEAD (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(expr_list:REG_UNUSED (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(nil))))
(insn 12 50 13 2 (cond_exec (eq (reg:CC 100 cc)
(const_int 0 [0]))
(set (reg:SI 3 r3 [orig:126 iftmp.1_5 ] [126])
(not:SI (reg:SI 2 r2 [orig:124 a.0_1 ] [124])))) "pr89826.c":9:14
3805 {*p *arm_one_cmplsi2}
(nil))
(insn 13 12 39 2 (cond_exec (eq (reg:CC 100 cc)
(const_int 0 [0]))
(set (reg:SI 1 r1 [orig:127 iftmp.1_5+4 ] [127])
(not:SI (reg:SI 12 ip [orig:125 a.0_1+4 ] [125]))))
"pr89826.c":9:14 3805 {*p *arm_one_cmplsi2}
(nil))
So, if the problem is using REG_UNUSED note, something forgot to recompute the
notes problem (regcprop?).
>From gcc-bugs-return-638529-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:16:59 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89829
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-26
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Let me take a look.
>From gcc-bugs-return-638530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:27:42 2019
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From: "nok.raven at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug regression/89733] [7/8/9 Regression] False positive -Wuninitialized in C++14+ mode
Date: Tue, 26 Mar 2019 15:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89733
--- Comment #6 from Nikita Kniazev <nok.raven at gmail dot com> ---
I understand. I though that -Wuninitialized should not produce false positives
and that's a main difference between it and -Wno-maybe-uninitialized.
The warning does not go away and does not change to -Wno-maybe-uninitialized on
higher optimization levels. https://wandbox.org/permlink/xsdWxIEfAHDRcAyl
Also the warning message could be better, currently it's not clear that it
comes from the implicit constructor.
I am fine with fixing my code and closing this issue if you think that there is
no problem in GCC. Thanks for spending your time on this.
>From gcc-bugs-return-638531-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:27:46 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89812
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The test is broken in multiple ways. The long long diagnostics can be fixed
e.g. through adding { dg-options "" }, but there is more serious problem that
the test hardcodes the 1 << 28 MAX_OFILE_ALIGNMENT, which is only one of many
possible values:
defaults.h:#ifndef MAX_OFILE_ALIGNMENT
defaults.h:#define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
config/alpha/vms.h:#define MAX_OFILE_ALIGNMENT 524288 /* 8 x 2^16 by DEC Ada
Test CD40VRA */
config/microblaze/microblaze.h:#define MAX_OFILE_ALIGNMENT
(32768*8)
config/avr/elf.h:#define MAX_OFILE_ALIGNMENT (32768 * 8)
config/i386/xm-djgpp.h:#define MAX_OFILE_ALIGNMENT 128
config/i386/cygming.h:#define MAX_OFILE_ALIGNMENT (8192 * 8)
config/ia64/vms.h:#define MAX_OFILE_ALIGNMENT 524288 /* 8 x 2^16 by DEC Ada
Test CD40VRA */
config/pa/elf.h:#define MAX_OFILE_ALIGNMENT (32768 * 8)
config/pa/som.h:#define MAX_OFILE_ALIGNMENT 32768
config/pa/pa64-hpux.h:#define MAX_OFILE_ALIGNMENT 32768
config/darwin.h:#define MAX_OFILE_ALIGNMENT (0x8000 * 8)
config/nvptx/nvptx.h:#define MAX_OFILE_ALIGNMENT (32768 * 8)
config/mmix/mmix.h:#define MAX_OFILE_ALIGNMENT (32768 * 8)
config/elfos.h:#define MAX_OFILE_ALIGNMENT (((unsigned int) 1 << 28) * 8)
config/rs6000/xcoff.h:#define MAX_OFILE_ALIGNMENT 32768
We don't have an ELF effective target but I think even all ELF targets don't
actually use the 1 << 28 even when ignoring the above clearly visible AVR case
- any ELF target that doesn't use elfos.h and rolls stuff on its own and not
listed above will use BIGGEST_ALIGNMENT, which is most likely not 1 << 28.
So, I think we just need to limit the test to a couple of most common targets
with 1 << 28 max ofile alignment.
>From gcc-bugs-return-638532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:29:25 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/48101] obscure error message with std::set<const int>
Date: Tue, 26 Mar 2019 15:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48101
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Mar 26 15:28:48 2019
New Revision: 269949
URL: https://gcc.gnu.org/viewcvs?rev=269949&root=gcc&view=rev
Log:
PR libstdc++/85965 delay static assertions until types are complete
The static assertions added for PR libstdc++/48101 were at class scope
and so were evaluated too eagerly, when it might not be possible to
determine whether the function objects are invocable with the key types.
The problematic cases are where the key type is not known to be
convertible to the argument type(s) of the function object until later,
after a type has been completed. Specifically, if the key type is a
pointer to a derived class and the function object's argument type is a
pointer to a base class, then the derived-to-base conversion is only
valid once the derived type is complete.
By moving the static assertions to the destructor they will only be
evaluated when the destructor is instantiated, at which point whether
the key type can be passed to the function object should be knowable.
The ideal place to do the checks would be only when the function objects
are actually invoked, but that would mean adding the checks in numerous
places, so the destructor is used instead.
The tests need to be adjusted because the "required from here" line is
now the location of the destructor, not the point of instantiation in
the test file. For the map and multimap tests which check two
specializations, the dg-error matching the assertion text matches both
cases. Also check the diagnostic output for the template arguments, to
ensure both specializations trigger the assertion.
PR libstdc++/85965
* include/bits/hashtable.h (_Hashtable): Move static assertions to
destructor so they are not evaluated until the _Key type is complete.
* include/bits/stl_tree.h (_Rb_tree): Likewise.
* testsuite/23_containers/set/85965.cc: New test.
* testsuite/23_containers/unordered_set/85965.cc: New test.
* testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
with regexp matching the corresponding _Rb_tree specialization.
* testsuite/23_containers/multimap/48101_neg.cc: Likewise.
* testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
* testsuite/23_containers/set/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
Added:
trunk/libstdc++-v3/testsuite/23_containers/set/85965.cc
- copied, changed from r269947,
trunk/libstdc++-v3/testsuite/23_containers/map/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/85965.cc
- copied, changed from r269947,
trunk/libstdc++-v3/testsuite/23_containers/map/48101_neg.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/hashtable.h
trunk/libstdc++-v3/include/bits/stl_tree.h
trunk/libstdc++-v3/testsuite/23_containers/map/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/multimap/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/multiset/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/set/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_map/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multimap/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multiset/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/48101_neg.cc
>From gcc-bugs-return-638533-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:29:29 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/85965] [8/9 Regression] G++ gives cryptic error instead of incomplete type
Date: Tue, 26 Mar 2019 15:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85965
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Mar 26 15:28:48 2019
New Revision: 269949
URL: https://gcc.gnu.org/viewcvs?rev=269949&root=gcc&view=rev
Log:
PR libstdc++/85965 delay static assertions until types are complete
The static assertions added for PR libstdc++/48101 were at class scope
and so were evaluated too eagerly, when it might not be possible to
determine whether the function objects are invocable with the key types.
The problematic cases are where the key type is not known to be
convertible to the argument type(s) of the function object until later,
after a type has been completed. Specifically, if the key type is a
pointer to a derived class and the function object's argument type is a
pointer to a base class, then the derived-to-base conversion is only
valid once the derived type is complete.
By moving the static assertions to the destructor they will only be
evaluated when the destructor is instantiated, at which point whether
the key type can be passed to the function object should be knowable.
The ideal place to do the checks would be only when the function objects
are actually invoked, but that would mean adding the checks in numerous
places, so the destructor is used instead.
The tests need to be adjusted because the "required from here" line is
now the location of the destructor, not the point of instantiation in
the test file. For the map and multimap tests which check two
specializations, the dg-error matching the assertion text matches both
cases. Also check the diagnostic output for the template arguments, to
ensure both specializations trigger the assertion.
PR libstdc++/85965
* include/bits/hashtable.h (_Hashtable): Move static assertions to
destructor so they are not evaluated until the _Key type is complete.
* include/bits/stl_tree.h (_Rb_tree): Likewise.
* testsuite/23_containers/set/85965.cc: New test.
* testsuite/23_containers/unordered_set/85965.cc: New test.
* testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
with regexp matching the corresponding _Rb_tree specialization.
* testsuite/23_containers/multimap/48101_neg.cc: Likewise.
* testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
* testsuite/23_containers/set/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
* testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
Added:
trunk/libstdc++-v3/testsuite/23_containers/set/85965.cc
- copied, changed from r269947,
trunk/libstdc++-v3/testsuite/23_containers/map/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/85965.cc
- copied, changed from r269947,
trunk/libstdc++-v3/testsuite/23_containers/map/48101_neg.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/hashtable.h
trunk/libstdc++-v3/include/bits/stl_tree.h
trunk/libstdc++-v3/testsuite/23_containers/map/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/multimap/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/multiset/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/set/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_map/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multimap/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multiset/48101_neg.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/48101_neg.cc
>From gcc-bugs-return-638534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 15:57:48 2019
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From: "zbeekman at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89830] New: intrinsic repeat() is completely broken
Date: Tue, 26 Mar 2019 15:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89830
Bug ID: 89830
Summary: intrinsic repeat() is completely broken
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: zbeekman at gmail dot com
Target Milestone: ---
Created attachment 46026
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46026&action=edit
Broken repeat example
The non-elemental intrinsic string function REPEAT() is completely broken. With
GFortran 8.3.0 installed via macOS Homebrew the following program fails to
compile:
```Fortran
program repeat
implicit none
write(*,*) repeat('a',5)
end program
```
It was compiled with:
```
gfortran -o repeat repeat_deterministic.f90
```
and produces the following error message:
```
repeat_deterministic.f90:3:19:
write(*,*) repeat('a',5)
1
Error: Symbol at (1) is not appropriate for an expression
```
Furthermore, there is an error message embedded in the `REPEAT()` function
which breaks deterministic builds! It is unclear to me why the following
example compiles while the one above does not:
```Fortran
subroutine co_broadcast_c_char(a,source_image,stat,errmsg)
character(kind=c_char,len=*), intent(inout), volatile, target :: a
integer(c_int), intent(in), optional :: source_image
integer(c_int), intent(out), optional:: stat
character(kind=1,len=*), intent(out), optional :: errmsg
! Local variables and constants:
integer(c_int), allocatable :: a_cast_to_integer_array(:)
! Convert "a" to an integer(c_int) array where each 32-bit integer element
holds four 1-byte characters
a_cast_to_integer_array = transfer(a,[0_c_int])
! Broadcast the integer(c_int) array
call co_broadcast_c_int(a_cast_to_integer_array,source_image, stat, errmsg)
! Recover the characters from the broadcasted integer(c_int) array
a = transfer(a_cast_to_integer_array,repeat(' ',len(a)))
end subroutine
```
(This example is from OpenCoarrays 2.6.1, or you can find it at
https://github.com/sourceryinstitute/OpenCoarrays/blob/8ceb2ce8912f4f0d5317a6cce248d042b3942280/src/extensions/opencoarrays.F90#L590)
When compiled, even with the `-fno-working-directory` flag, the object file
still contains references to the full path to the source file:
```
$ strings
src/mpi/CMakeFiles/opencoarrays_mod.dir/__/extensions/opencoarrays.F90.o
Argument NCOPIES of REPEAT intrinsic is negative (its value is %ld)
At line 590 of file
/Users/ibeekman/Sandbox/OpenCoarrays/src/extensions/opencoarrays.F90
```
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Subject: [Bug c++/87327] [8/9 Regression] Calling member functions on captured constexpr variables "is not a constant expression"
Date: Tue, 26 Mar 2019 16:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87327
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Mar 26 16:02:19 2019
New Revision: 269951
URL: https://gcc.gnu.org/viewcvs?rev=269951&root=gcc&view=rev
Log:
PR c++/86429 - constexpr variable in lambda.
When we refer to a captured variable from a constant-expression context
inside a lambda, the closure (like any function parameter) is not constant
because we aren't in a call, so we don't have an argument. So the capture
is non-constant. But if the captured variable is constant, we might be able
to use it directly in constexpr evaluation.
PR c++/82643
PR c++/87327
* constexpr.c (cxx_eval_constant_expression): In a lambda function,
try evaluating the captured variable directly.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const10.C
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const9.C
trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda24.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
>From gcc-bugs-return-638535-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:02:57 2019
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Subject: [Bug c++/86429] [8/9 Regression] lambda capture breaks constexpr-ness
Date: Tue, 26 Mar 2019 16:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86429
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Mar 26 16:02:19 2019
New Revision: 269951
URL: https://gcc.gnu.org/viewcvs?rev=269951&root=gcc&view=rev
Log:
PR c++/86429 - constexpr variable in lambda.
When we refer to a captured variable from a constant-expression context
inside a lambda, the closure (like any function parameter) is not constant
because we aren't in a call, so we don't have an argument. So the capture
is non-constant. But if the captured variable is constant, we might be able
to use it directly in constexpr evaluation.
PR c++/82643
PR c++/87327
* constexpr.c (cxx_eval_constant_expression): In a lambda function,
try evaluating the captured variable directly.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const10.C
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const9.C
trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda24.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
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Subject: [Bug c++/82643] lambda capture breaks constexpr-ness of non-static const constexpr member call on non-constexpr value/variable
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Mar 26 16:02:19 2019
New Revision: 269951
URL: https://gcc.gnu.org/viewcvs?rev=269951&root=gcc&view=rev
Log:
PR c++/86429 - constexpr variable in lambda.
When we refer to a captured variable from a constant-expression context
inside a lambda, the closure (like any function parameter) is not constant
because we aren't in a call, so we don't have an argument. So the capture
is non-constant. But if the captured variable is constant, we might be able
to use it directly in constexpr evaluation.
PR c++/82643
PR c++/87327
* constexpr.c (cxx_eval_constant_expression): In a lambda function,
try evaluating the captured variable directly.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const10.C
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const9.C
trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda24.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
>From gcc-bugs-return-638539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:03:32 2019
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Subject: [Bug c++/86429] [8 Regression] lambda capture breaks constexpr-ness
Date: Tue, 26 Mar 2019 16:03:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] lambda |[8 Regression] lambda
|capture breaks |capture breaks
|constexpr-ness |constexpr-ness
--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-638538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:03:27 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87327] [8 Regression] Calling member functions on captured constexpr variables "is not a constant expression"
Date: Tue, 26 Mar 2019 16:03:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] Calling |[8 Regression] Calling
|member functions on |member functions on
|captured constexpr |captured constexpr
|variables "is not a |variables "is not a
|constant expression" |constant expression"
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-638541-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:04:22 2019
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Subject: [Bug c++/54367] [meta-bug] lambda expressions
Date: Tue, 26 Mar 2019 16:04:00 -0000
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Bug 54367 depends on bug 82643, which changed state.
Bug 82643 Summary: lambda capture breaks constexpr-ness of non-static const constexpr member call on non-constexpr value/variable
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82643
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug c++/82643] lambda capture breaks constexpr-ness of non-static const constexpr member call on non-constexpr value/variable
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for GCC 9.
>From gcc-bugs-return-638542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:06:06 2019
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Subject: [Bug c++/86932] [8/9 Regression] Empty non-type template parameter pack not considered for SFINAE.
Date: Tue, 26 Mar 2019 16:06:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
>From gcc-bugs-return-638543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:43:58 2019
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Subject: [Bug target/38177] Internal compiler error during gcc build with -march=amdfam10
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Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:
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Known to work| |
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--- Comment #8 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> ---
This report is bitrotten by now, 4.3 is no longer maintained.
>From gcc-bugs-return-638544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:46:55 2019
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From: "lumosimann at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89831] New: passing 'const ...' as 'this' argument discards qualifiers
Date: Tue, 26 Mar 2019 16:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89831
Bug ID: 89831
Summary: passing 'const ...' as 'this' argument discards
qualifiers
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Starting from GCC 8.1, the following code does not compile anymore:
```
struct Q {
int operator[](int i) { return 0; }
int operator[](int i) const { return 0; }
};
struct Base {
Q x;
};
struct X : public Base {
template <typename T>
void f(T) const {
auto q = Base::x[0];
}
};
int main() { X{}.f(3); }
```
https://godbolt.org/z/UefNCx
- using `operator()` instead of `operator[]` fixes the problem
- using `x[0]` instead of `Base::x[0]` fixes the problem
- removing the template from `X::f` fixes the problem
In older versions and with clang, compilation is okay.
>From gcc-bugs-return-638545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:54:41 2019
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Subject: [Bug tree-optimization/89499] [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
Date: Tue, 26 Mar 2019 16:54:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With __attribute__((always_inline)) static inline at the start of 2nd line
this ICEs even with -O0, it is clearly related to inlining.
Thomas, can you or somebody else from the OpenACC folks have a look?
Either the .UNIQUE calls are uninlinable, then they should be marked that way,
or they need some adjustments during inlining, and again, the inliner would
need to do that.
The testcase ICEs without any offloading configured, dunno if it is specific to
fallback only or not.
>From gcc-bugs-return-638546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:57:29 2019
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Tue, 26 Mar 2019 16:57:00 -0000
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #1 from kargl at gcc dot gnu.org ---
(In reply to Zaak from comment #0)
> Created attachment 46026 [details]
> Broken repeat example
>
> The non-elemental intrinsic string function REPEAT() is completely broken.
> With GFortran 8.3.0 installed via macOS Homebrew the following program fails
> to compile:
>
> ```Fortran
> program repeat
> implicit none
> write(*,*) repeat('a',5)
> end program
> ```
>
> It was compiled with:
>
> ```
> gfortran -o repeat repeat_deterministic.f90
> ```
>
> and produces the following error message:
>
> ```
> repeat_deterministic.f90:3:19:
>
> write(*,*) repeat('a',5)
> 1
> Error: Symbol at (1) is not appropriate for an expression
> ```
Yes, it should produce an error.
program repeat
^^^^^^
The above symbol
> implicit none
> write(*,*) repeat('a',5)
^^^^^^
conflicts with this symbol
> end program
>From gcc-bugs-return-638547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 16:58:17 2019
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Subject: [Bug target/30810] top-level BOOT_CFLAGS not being used for bootstrapping
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Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:
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--- Comment #8 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> ---
Works as documented in https://gcc.gnu.org/install/build.html . Although
documentation could be improved and various *FLAGS should be consolidated.
>From gcc-bugs-return-638548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 17:19:38 2019
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Tue, 26 Mar 2019 17:19:00 -0000
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--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to Zaak from comment #0)
> When compiled, even with the `-fno-working-directory` flag, the object file
> still contains references to the full path to the source file:
>
> ```
> $ strings
> src/mpi/CMakeFiles/opencoarrays_mod.dir/__/extensions/opencoarrays.F90.o
>
> Argument NCOPIES of REPEAT intrinsic is negative (its value is %ld)
> At line 590 of file
> /Users/ibeekman/Sandbox/OpenCoarrays/src/extensions/opencoarrays.F90
Not sure about the above.
I doubt -fno-working-directory works with gfortran, and I doubt
if anyone can or has the time to fix it. Do note that this option
is pre-processor option. gfortran runs the processor in traditional
mode, so the option may be a nop.
>From gcc-bugs-return-638550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 17:31:03 2019
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From: "diane2332 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89832] New: confusing error message when there is a problem with ASAN_OPTIONS "ERROR: expected '='"
Date: Tue, 26 Mar 2019 17:31:00 -0000
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Bug ID: 89832
Summary: confusing error message when there is a problem with
ASAN_OPTIONS "ERROR: expected '='"
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: diane2332 at gmail dot com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
When using AddressSanitizer on a very large software system involving multiple
binaries, libraries, etc., it is very difficult to know where an error message
is coming from when all I get is:
ERROR: expected '='
I eventually traced this to libasan.so.
It would have been so much easier if perhaps the message was:
AddressSanitizer: ERROR: expected '=' in ASAN_OPTIONS
Example follows.
hello.c:
#include <stdio.h>
int main()
{
printf("Hello world\n");
return 0;
}
gcc --version
gcc (GCC) 8.2.1 20190102
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
gcc -g -fsanitize=address hello.c
./a.out
Hello world
setenv ASAN_OPTIONS bad_stuff
./a.out
ERROR: expected '='
>From gcc-bugs-return-638549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 17:31:01 2019
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Subject: [Bug c++/89831] [8/9 Regression] passing 'const ...' as 'this' argument discards qualifiers
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Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-26
CC| |jakub at gcc dot gnu.org,
| |nathan at gcc dot gnu.org
Target Milestone|--- |8.4
Summary|passing 'const ...' as |[8/9 Regression] passing
|'this' argument discards |'const ...' as 'this'
|qualifiers |argument discards
| |qualifiers
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r255605.
>From gcc-bugs-return-638551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 17:43:49 2019
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
Date: Tue, 26 Mar 2019 17:43:00 -0000
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--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #6)
> Another option, slightly more involved, is say cp_walk_tree on
> SWITCH_STMT_BODY, looking for any RETURN_EXPRs or CONTINUE_STMTs (the latter
> only when not nested inside of a FOR_STMT, DO_STMT, WHILE_STMT and
> RANGE_FOR_STMT) and if we find a RETURN_EXPR, set jump_target to that, if we
> don't, but find a CONTINUE_STMT not nested in further looping constructs,
> set *jump_target to that CONTINUE_STMT, otherwise keep it unchanged. To me
> this looks like the best approach for now.
I agree.
>From gcc-bugs-return-638552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 17:59:13 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Tue, 26 Mar 2019 17:59:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Zaak from comment #0)
> Furthermore, there is an error message embedded in the `REPEAT()` function
I doubt that. REPEAT() is an intrinsic, there are no embedded
error messages in there.
> which breaks deterministic builds! It is unclear to me why the following
> example compiles while the one above does not:
>
> ```Fortran
> subroutine co_broadcast_c_char(a,source_image,stat,errmsg)
> character(kind=c_char,len=*), intent(inout), volatile, target :: a
> integer(c_int), intent(in), optional :: source_image
> integer(c_int), intent(out), optional:: stat
> character(kind=1,len=*), intent(out), optional :: errmsg
> ! Local variables and constants:
> integer(c_int), allocatable :: a_cast_to_integer_array(:)
>
> ! Convert "a" to an integer(c_int) array where each 32-bit integer
> element holds four 1-byte characters
> a_cast_to_integer_array = transfer(a,[0_c_int])
> ! Broadcast the integer(c_int) array
> call co_broadcast_c_int(a_cast_to_integer_array,source_image, stat,
> errmsg)
> ! Recover the characters from the broadcasted integer(c_int) array
> a = transfer(a_cast_to_integer_array,repeat(' ',len(a)))
>
> end subroutine
> ```
This does not compile.
Can you specify a complete, self-contained example?
>From gcc-bugs-return-638553-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 18:10:04 2019
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Subject: [Bug c++/89833] New: [9 Regression] sorry, unimplemented: string literal in function template signature
Date: Tue, 26 Mar 2019 18:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89833
Bug ID: 89833
Summary: [9 Regression] sorry, unimplemented: string literal in
function template signature
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When compiled with -std=c++2a this started to fail with r269814:
using size_t = decltype(sizeof(0));
template<typename T, size_t N> struct array { T data[N]; };
template<size_t...> struct index_sequence { };
template<size_t> struct make_index_sequence;
template<> struct make_index_sequence<6> : index_sequence<0, 1, 2, 3, 4, 5> {
};
template <size_t N>
struct mystring : array<char, N> {
template <size_t ...Idx>
constexpr mystring(const char (&str)[N], index_sequence<Idx...>)
: array<char, N>{str[Idx]...} {}
constexpr mystring(const char (&str)[N]) : mystring(str,
make_index_sequence<N>{}) {}
};
template <size_t N>
mystring(const char (&str)[N]) -> mystring<N>;
template <mystring>
struct S {};
S<"Hello"> s;
reg.cc: In instantiation of ‘struct S<mystring<6>{array<char, 6>{"Hello"}}>’:
reg.cc:24:12: required from here
reg.cc:22:10: sorry, unimplemented: string literal in function template
signature
22 | struct S {};
| ^
reg.cc:22:10: sorry, unimplemented: string literal in function template
signature
reg.cc:22:10: sorry, unimplemented: string literal in function template
signature
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Tue, 26 Mar 2019 18:10:00 -0000
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--- Comment #4 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Tue, Mar 26, 2019 at 05:59:08PM +0000, tkoenig at gcc dot gnu.org wrote:
>
> --- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
> (In reply to Zaak from comment #0)
>
> > Furthermore, there is an error message embedded in the `REPEAT()` function
>
> I doubt that. REPEAT() is an intrinsic, there are no embedded
> error messages in there.
>
There's error messages.
% cat tmp/a.F90
subroutine foo(s,n)
implicit none
character(len=1), intent(in) :: s
integer, intent(in) :: n
write(*,*) repeat(s,n)
end subroutine
% gfcx -c tmp/a.F90
% strings a.o | head -9
ATSH
[A\]
tmp/a.F90
Argument NCOPIES of REPEAT intrinsic is negative (its value is %ld)
At line 5 of file tmp/a.F90
Argument NCOPIES of REPEAT intrinsic is too large
GCC: (GNU) 9.0.1 20190325 (experimental)
a.F90
Zaak wants -fno-working-directory to strip the "tmp/" from
"At line 5 of file tmp/a.F90". The option applies to pre-processing
and has no impact on gfortran's error mechanism.
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Subject: [Bug c++/89833] [9 Regression] sorry, unimplemented: string literal in function template signature
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Right:
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01064.html
>From gcc-bugs-return-638556-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 18:26:08 2019
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Subject: [Bug c++/89421] [9 Regression] ICE with lambda in template parameter list
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #4)
> Jason, should we also return NULL_TREE for lambdas inside template parameter
> list (in retrieve_specialization)?
That's not sufficient, even if it probably makes some sense.
(This likely should be P2 instead of P1, as it's previously invalid code.)
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
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--- Comment #5 from Zaak <zbeekman at gmail dot com> ---
Sorry about the bad reproducer code (name conflict).
To create reproducible builds one must be able to strip or at least map source
file references from the source/build directory to something more generic or
universal.
For example, I usually create a build subdirectory of my source tree and
compile in there. Being able to omit directories in filenames is a critical
part of this.
In this particular example, I suppose that I can likely pass a relative path to
the compiler rather than the full path to the source file.
But, it would be nice if there were a mechanism to strip paths from
warning/error messages like this.
I have tried:
-fno-working-directory
-ffile-prefix-map=OLD=NEW
-fdebug-prefix-map=OLD=NEW
-fmacro-prefix-map=OLD=NEW
and the error message from `repeat()` stubbornly persists.
Also, given that my reproducer code was dumb, should we close this an open a
new issue to track the paths getting embedded? Or should this issue stay open
to discuss/resolve the paths? Personally I think it would be clearer if I
closed this as invalid and submitted a new issue demonstrating the path issue.
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Subject: [Bug fortran/89821] Get a SIGFPE on a simple test of a kind=real128 variable with -ffpe-trap=invalid switch
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
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Subject: [Bug fortran/89821] Get a SIGFPE on a simple test of a kind=real128 variable with -ffpe-trap=invalid switch
Date: Tue, 26 Mar 2019 18:34:00 -0000
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--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to Richard Biener from comment #1)
> The invalid exception is raised here:
>
> Program received signal SIGFPE, Arithmetic exception.
> 0x0000000000400cde in demo_nan () at t.f90:17
> 17 if ( (r32<=0.0_real32) .or. (r32>=0.0_real32) )then
>
> 0x0000000000400cd2 <+416>: movss -0x134(%rbp),%xmm1
> 0x0000000000400cda <+424>: pxor %xmm0,%xmm0
> => 0x0000000000400cde <+428>: comiss %xmm1,%xmm0
>
> where %xmm1 is NaN.
>
> (gdb) p $xmm1
> $2 = ( v4_float = (nan(0x400000), 0, 0, 0),
>
> so not sure what you are expecting? Is Fortran supposed to use the
> C equivalent of isgreaterequal (aka comparisons that do not raise
> exceptions?)
The Fortran standard says nothing about the option -ffpe-trap=invalid.
If one uses an option requesting a trap, then one might anticipate
that it cause a SIGFPE when an NaN is used in an expression.
This reduced testcase fails with 8-branch and trunk when compiled
with -ffpe-trap=invalid.
program demo_nan
use,intrinsic :: iso_fortran_env, only: real32
implicit none
character(len=3),save :: STRING='NaN'
real(kind=real32) :: r32
character(len=256) :: message
integer :: ios
read(STRING,*)r32
! an option to terminate a program when a NaN is encountered
! (if X is NaN the comparison with 0. is always false.)
if ( (r32<=0.0_real32) .or. (r32>=0.0_real32) )then
write(*,*)'did not produce a nan_real32'
else
write(*,*)'found a nan_real32. Handle it.'
endif
! list directed format
write(*,*,iomsg=message,iostat=ios)r32
if(ios.ne.0)write(*,*)trim(message)
! hexadecimal format to show different kinds
write(*,'(z0)',iomsg=message,iostat=ios)r32
end program demo_nan
The above compiles with both 6-branch and an old 7-branch
(need to update 7 to test).
There are two ways in which I can avoid the SIGFPE and
still use an NaN. First, one can use the intrinsic
function isnan() to change the conditional to
if (.not.isnan(r32))then
write(*,*)'did not produce a nan_real32'
else
write(*,*)'found a nan_real32. Handle it.'
endif
The second, and likely preferred method, is to use the IEEE_ARITHMETIC
module that is provided by the Fortran Standard.
>From gcc-bugs-return-638560-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 18:59:56 2019
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Subject: [Bug target/89827] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Tue, 26 Mar 2019 18:59:00 -0000
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--- Comment #3 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue Mar 26 18:59:14 2019
New Revision: 269953
URL: https://gcc.gnu.org/viewcvs?rev=269953&root=gcc&view=rev
Log:
PR target/89827
* config/i386/i386.c (dimode_scalar_chain::convert_reg):
Also process XEXP (src, 0) of a shift insn.
testsuite/ChangeLog:
PR target/89827
* gcc.target/i386/pr89827.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89827.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638561-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 19:27:12 2019
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Subject: [Bug testsuite/89834] New: New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails on power 7
Date: Tue, 26 Mar 2019 19:27:00 -0000
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Bug ID: 89834
Summary: New test case gcc.dg/vect/pr81740-2.c introduced in
r269938 fails on power 7
Product: gcc
Version: 9.0
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This only fails on power 7 BE; it works find on power 8 BE.
On power 7 the compilation options include "-mvsx -mno-allow-movmisalign" while
on power 8 that is replaced with "-mpower8-vector". So perhaps the expected
vectorization only occurs on power 8 and later?
Executing on host: /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/vect/pr81740-2.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -maltivec -mvsx -mno-allow-movmisalign
-ftree-vectorize -fno-vect-cost-model -fno-common -O2 -fdump-tree-vect-details
-lm -o ./pr81740-2.exe (timeout = 300)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/vect/pr81740-2.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -maltivec -mvsx -mno-allow-movmisalign
-ftree-vectorize -fno-vect-cost-model -fno-common -O2 -fdump-tree-vect-details
-lm -o ./pr81740-2.exe
PASS: gcc.dg/vect/pr81740-2.c (test for excess errors)
Setting LD_LIBRARY_PATH to
:/home/seurer/gcc/build/gcc-test/gcc::/home/seurer/gcc/build/gcc-test/gcc:/home/seurer/gcc/build/gcc-test/./gmp/.libs:/home/seurer/gcc/build/gcc-test/./prev-gmp/.libs:/home/seurer/gcc/build/gcc-test/./mpfr/src/.libs:/home/seurer/gcc/build/gcc-test/./prev-mpfr/src/.libs:/home/seurer/gcc/build/gcc-test/./mpc/src/.libs:/home/seurer/gcc/build/gcc-test/./prev-mpc/src/.libs:/home/seurer/gcc/build/gcc-test/./isl/.libs:/home/seurer/gcc/build/gcc-test/./prev-isl/.libs
Execution timeout is: 300
spawn [open ...]
PASS: gcc.dg/vect/pr81740-2.c execution test
FAIL: gcc.dg/vect/pr81740-2.c scan-tree-dump vect "OUTER LOOP VECTORIZED"
Executing on host: /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/vect/pr81740-2.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -flto -ffat-lto-objects -maltivec -mvsx
-mno-allow-movmisalign -ftree-vectorize -fno-vect-cost-model -fno-common -O2
-fdump-tree-vect-details -lm -o ./pr81740-2.exe (timeout = 300)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/vect/pr81740-2.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -flto -ffat-lto-objects -maltivec -mvsx
-mno-allow-movmisalign -ftree-vectorize -fno-vect-cost-model -fno-common -O2
-fdump-tree-vect-details -lm -o ./pr81740-2.exe
PASS: gcc.dg/vect/pr81740-2.c -flto -ffat-lto-objects (test for excess errors)
Setting LD_LIBRARY_PATH to
:/home/seurer/gcc/build/gcc-test/gcc::/home/seurer/gcc/build/gcc-test/gcc:/home/seurer/gcc/build/gcc-test/./gmp/.libs:/home/seurer/gcc/build/gcc-test/./prev-gmp/.libs:/home/seurer/gcc/build/gcc-test/./mpfr/src/.libs:/home/seurer/gcc/build/gcc-test/./prev-mpfr/src/.libs:/home/seurer/gcc/build/gcc-test/./mpc/src/.libs:/home/seurer/gcc/build/gcc-test/./prev-mpc/src/.libs:/home/seurer/gcc/build/gcc-test/./isl/.libs:/home/seurer/gcc/build/gcc-test/./prev-isl/.libs
Execution timeout is: 300
spawn [open ...]
PASS: gcc.dg/vect/pr81740-2.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/pr81740-2.c -flto -ffat-lto-objects scan-tree-dump vect
"OUTER LOOP VECTORIZED"
testcase /home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/vect/vect.exp completed
in 3 seconds
=== gcc Summary ===
# of expected passes 4
# of unexpected failures 2
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From: "belyshev at depni dot sinp.msu.ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/89829] incorrect profile data is used during profiledbootstrap
Date: Tue, 26 Mar 2019 19:37:00 -0000
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--- Comment #2 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> ---
On the other hand, benchmarking shows that better training brings no advantage.
Or rather, slight measurable regression is apparent:
option | training dataset | benchmark | compiler binary
| | time, s | size, MB
-------------------------------------------------------------------------------
bootstrap | N/A | 11.203 | 32.2
profiledbootstrap | none | 11.518 | 38.0
profiledbootstrap | libgcc | 10.091 | 30.1
profiledbootstrap | stagetrain | 10.130 | 30.8
profiledbootstrap | libgcc+stagetrain | 10.116 | 30.9
profiledbootstrap | as above + combined tree | 10.128 | 30.9
--------------------------------------------------------------------------------
Thus, some tuning is needed, I guess.
Notes: BOOT_CFLAGS=-Ofast was used for the above. Benchmark is cc1files from
gcc 3.4, compiled by compiler under test with -Ofast. Time values are averages
of 100 runs, standard error of mean is about 0.001 s, sample standard deviaton
is 0.011 s.
>From gcc-bugs-return-638563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 19:46:04 2019
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Tue, 26 Mar 2019 19:46:00 -0000
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--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Tue, Mar 26, 2019 at 06:32:21PM +0000, zbeekman at gmail dot com wrote:
> Also, given that my reproducer code was dumb, should we close this an open a
> new issue to track the paths getting embedded? Or should this issue stay open
> to discuss/resolve the paths? Personally I think it would be clearer if I
> closed this as invalid and submitted a new issue demonstrating the path issue.
Sure. Close this bug, and open a new bug.
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Subject: [Bug fortran/89821] Get a SIGFPE on a simple test of a kind=real128 variable with -ffpe-trap=invalid switch
Date: Tue, 26 Mar 2019 19:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89821
--- Comment #3 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Tue, Mar 26, 2019 at 06:34:09PM +0000, kargl at gcc dot gnu.org wrote:
>
> This reduced testcase fails with 8-branch and trunk when compiled
> with -ffpe-trap=invalid.
>
> program demo_nan
> use,intrinsic :: iso_fortran_env, only: real32
> implicit none
> character(len=3),save :: STRING='NaN'
> real(kind=real32) :: r32
> character(len=256) :: message
> integer :: ios
> read(STRING,*)r32
> ! an option to terminate a program when a NaN is encountered
> ! (if X is NaN the comparison with 0. is always false.)
> if ( (r32<=0.0_real32) .or. (r32>=0.0_real32) )then
> write(*,*)'did not produce a nan_real32'
> else
> write(*,*)'found a nan_real32. Handle it.'
> endif
> ! list directed format
> write(*,*,iomsg=message,iostat=ios)r32
> if(ios.ne.0)write(*,*)trim(message)
> ! hexadecimal format to show different kinds
> write(*,'(z0)',iomsg=message,iostat=ios)r32
> end program demo_nan
>
> The above compiles with both 6-branch and an old 7-branch
> (need to update 7 to test).
With an up-to-date 7-branch, if one builds an executable
with -ffpe-trap=invalid, the exexcutable with die with a
SIGFPE.
>From gcc-bugs-return-638566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 19:51:18 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
Date: Tue, 26 Mar 2019 19:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89785
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46027
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46027&action=edit
gcc9-pr89785.patch
Untested fix.
>From gcc-bugs-return-638565-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 19:51:07 2019
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From: "mikulas at artax dot karlin.mff.cuni.cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89835] New: The RISC-V target uses amoswap.w for relaxed stores
Date: Tue, 26 Mar 2019 19:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89835
Bug ID: 89835
Summary: The RISC-V target uses amoswap.w for relaxed stores
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: mikulas at artax dot karlin.mff.cuni.cz
Target Milestone: ---
Stores with memory_order_relaxed can be implemented as simple store
instructions. For the RISC-V target, gcc generates less efficient atomic
instruction amoswap.w.
Try to compile with code with "riscv64-linux-gnu-gcc-8 -S -o - -O2 relaxed.c":
#include <stdatomic.h>
_Atomic int value;
int load(void)
{
return atomic_load_explicit(&value, memory_order_relaxed);
}
void store(int x)
{
atomic_store_explicit(&value, x, memory_order_relaxed);
}
Result:
.file "relaxed.c"
.option pic
.text
.align 1
.globl load
.type load, @function
load:
la a5,value
lw a0,0(a5)
sext.w a0,a0
ret
.size load, .-load
.align 1
.globl store
.type store, @function
store:
la a5,value
amoswap.w zero,a0,0(a5)
ret
.size store, .-store
.comm value,4,4
.ident "GCC: (Debian 8.3.0-2) 8.3.0"
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Subject: [Bug target/89835] The RISC-V target uses amoswap.w for relaxed stores
Date: Tue, 26 Mar 2019 19:56:00 -0000
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Andrew Waterman <andrew at sifive dot com> changed:
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----------------------------------------------------------------------------
CC| |andrew at sifive dot com
--- Comment #1 from Andrew Waterman <andrew at sifive dot com> ---
That would be a valid optimization, and it would also reduce instruction count
in some cases by allowing the use of base+offset addressing.
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89836] New: converted constant expression of type bool and explicit conversion functions
Date: Tue, 26 Mar 2019 19:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89836
Bug ID: 89836
Summary: converted constant expression of type bool and
explicit conversion functions
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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struct W {
constexpr explicit operator bool() { return true; };
};
struct U {
explicit(W()) U(int);
};
doesn't compile because of the "explicit" specifier. But it should,
<http://eel.is/c++draft/expr.const#def:contextually_converted_constant_expression_of_type_bool>
doesn't require converting conversions only.
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Subject: [Bug c++/89836] converted constant expression of type bool and explicit conversion functions
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-26
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
>From gcc-bugs-return-638570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 20:08:50 2019
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Subject: [Bug middle-end/89837] New: __builtin_longjmp failure with instruction scheduling
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89837
Bug ID: 89837
Summary: __builtin_longjmp failure with instruction scheduling
Product: gcc
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The RISC-V port, with the just committed sifive-7-series support, with the
restore_stack_nonlocal pattern disabled, fails gcc.c-torture/execute/pr64242.c
at -O2 and higher. This appears to be a latent bug in the __builtin_longjump
support.
Before the first insn sched pass, I see
;; | 8 | 7 | r73=frame-0x14 sifive_7_A|sifive_7_B
;; | 12 | 5 | a2=0x14 sifive_7_A|sifive_7_B
;; | 13 | 6 | a1=r81 sifive_7_A|sifive_7_B
;; | 14 | 6 | a0=r73 sifive_7_A|sifive_7_B
;; | 15 | 4 | {a0=call [`memcpy'];clobber ra;} sifive_7_B
;; | 17 | 0 | debug_marker nothing
;; | 19 | 4 | r79=[r73+0x4] sifive_7_A
;; | 20 | 2 | clobber [scratch] nothing
;; | 21 | 2 | clobber [s0] nothing
;; | 22 | 2 | r80=[frame-0x14] sifive_7_A
;; | 23 | 1 | clobber [scratch] nothing
;; | 24 | 1 | clobber [sp] nothing
;; | 25 | 1 | sp=[r73+0x8] sifive_7_A
;; | 27 | 1 | s0=r80 sifive_7_A|sifive_7_B
So insn 25 is using a copy of the soft fp, and insn 27 is storing to the hard
fp. After register elimination and register allocation, these two instructions
will be using the same register, the hard fp, s0. However, in the first sched
pass, there is no obvious dependency between the two instructions, and it is
possible for the instruction scheduler to move insn 27 before insn 25, which
will cause the testcase to fail.
There needs to be some sort of clobber between the two instructions to prevent
the bad optimization in the first sched pass. In the RISC-V port, I added a
restore_stack_nonlocal pattern that adds after insn 25
;; | 26 | 1 | clobber [s0] nothing
which prevents the bad scheduler optimization.
I think either expand_builtin_longjmp in builtins.c or emit_stack_restore in
explow.c should be emitting this clobber or a similar one. There is already
code in expand_builtin_longjmp to emit a clobber of a MEM using the hard fp
before emit_stack_restore is called. Adding one after the emit_stack_restore
call would solve the problem. Or alternatively adding it at the end of
emit_stack_restore would work.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails on power 7
Date: Tue, 26 Mar 2019 20:13:00 -0000
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--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I'd guess it has to do with the fact that P7 doesn't have efficient unaligned
load/store support. Try adding vect_hw_misalign to the requirements?
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Subject: [Bug bootstrap/87891] problems with building cross GCC for target powerpc64-darwin from powerpc-darwin
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |WORKSFORME
--- Comment #12 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Douglas Mencken from comment #11)
1. I would advise against using "*-unknown-darwin" as the tail of the triple.
- this is because
-- there are a couple of configure places that match -apple- (I mean to get
rid of them at some point, but ...)
-- the top level libtool.sh will most likely pick options relevant to the
lowest version of OS X (10.0) which are not generally most compatible with 10.5
I suggest using powerpc{,64}-apple-darwin9 as the triple.
2. Note that, even in the best of times, powerpc64-apple-darwin{8,9} was much
less tested than the powerpc version.
3. there is at least one nasty 64b code-gen bug that i've not had a chance to
squish (patches welcome!) See PR65342 as an example (it occurs for all
languages, not just fortran).
Having said all that ... I do expect it to "work" FSDO "work".
> sudo cat << EOF > /usr/bin/powerpc64-unknown-darwin-ranlib
> #!/bin/sh
> exec ranlib \${1+"\$@"}
> EOF
^^ the original "libtool" utility figures out it is being invoked as "ranlib"
by looking at the command name. If it matches "ranlib" all is good .. but
powerpc64-apple-dariwn9-ranlib doesn't match ;)
- I "fixed" this in the xtools version of libtool (it looks at the tail only
now) -
https://github.com/iains/darwin-xtools/commit/6bbb627144efb637b79a2b340e6e14c316c46348
====
now as for configuring and building, you seem to be jumping through a number of
extra hoops anf they are confusing the issue ...
-----
(best to first build and install the native compiler for the branch you're
using) Note : YOU MUST DO THIS IF YOU WANT TO BUILD ADA (Ada doesn't cross
between different versions).
option 1: cross compiler:
=========
suppose you are going to install in /opt/iains/powerpc-apple-darwin9/gcc-8-3r0
make /opt/iains/powerpc-apple-darwin9/gcc-8-3r0/powerpc64-apple-darwin9/bin
in that dir you can symlink the cctools and ld64. In fact, even ranlib should
work here, since it is symlinked as "ranlib".
OS X has a convenience in that all the tools work for both m32 and m64, and the
system contains libraries at the same paths for both (FAT works in our favor
here). So the following should work.
/src-local/gcc-8-branch/configure
--prefix=/opt/iains/powerpc-apple-darwin9/gcc-8-3r0
--target=powerpc64-apple-darwin9 --host=powerpc-apple-darwin9
--build=powerpc-apple-darwin9 --enable-checking=release --disable-nls
--enable-version-specific-runtime-libs --with-sysroot=/
--enable-languages=c,c++,ada
NOTE; you need to tell it that the sysroot is "/".
option 2: Bootstrap a powerpc64 compiler.
=========
This is another neat feature, since the kernel is happy to launch m64
processes, and the system contains all the necessary stuff we can do this:
/src-local/gcc-8-branch/configure
--prefix=/opt/iains/powerpc64-apple-darwin9/gcc-8-3r0
--target=powerpc64-apple-darwin9 --host=powerpc64-apple-darwin9
--build=powerpc64-apple-darwin9 --enable-checking=release --disable-nls
--enable-version-specific-runtime-libs --enable-languages=c,c++,ada CC='gcc
-m64' CXX='g++ -m64' GNATMAKE='gnatmake -m64'
^^^ NOTE: here we've made the powerpc bootstrap compilers generate 64b code,
once stage#1 is complete, we have a 64b compiler anyway.
=======
Both of these schemes work for me today, with 8.3.
========
FWIW, IFF you want a complete 64b toolchain (including the linker and
assembler) that means building cctools and ld64 as 64b. I've not tested that
out much and have some doubt as to whether unpatched cctools/ld64 would work.
>From gcc-bugs-return-638573-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 26 20:47:22 2019
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails on power 7
Date: Tue, 26 Mar 2019 20:47:00 -0000
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--- Comment #2 from seurer at gcc dot gnu.org ---
I added
/* { dg-require-effective-target vect_hw_misalign } */
to the test and it comes out now as not supported on power 7 and thus does not
fail. Note that I only tried this there.
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails on power 7
Date: Tue, 26 Mar 2019 20:57:00 -0000
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--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
For the original test case, send me the results of -ftree-dump-vect-details for
P8 BE and I can verify whether this looks like the right fix. Would like to
get signoff from Bin on that as well, of course, as this will affect other
target architectures.
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Subject: [Bug fortran/50410] [7/8/9 Regression] ICE in record_reference, pointer variable in data statement
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--- Comment #34 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Vittorio Zecca from comment #2)
> The following produces a Segmentation fault in gfc_conv_structure (r178925)
>
> type t
> integer g
> end type
> type(t) :: u=t(1)
> data u%g /2/
> end
This is fixed, for example, by
Index: resolve.c
===================================================================
--- resolve.c (Revision 269895)
+++ resolve.c (Arbeitskopie)
@@ -15917,6 +15917,13 @@ resolve_data_variables (gfc_data_variable *d)
if (!resolve_data_variables (d->list))
return false;
}
+ if (d->expr->symtree && d->expr->symtree->n.sym
+ && d->expr->symtree->n.sym->value)
+ {
+ gfc_error ("Variable at %L already has an initializer",
+ &d->expr->where);
+ return false;
+ }
}
return true;
While (probably) correct, this is far from complete.
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails on power 7
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--- Comment #4 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Thanks, I verified that the vectorization depends on vectorizing an unaligned
access, so I believe this is the correct fix.
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Subject: [Bug target/89838] New: [ARC] ICE building glibc testsuite
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Bug ID: 89838
Summary: [ARC] ICE building glibc testsuite
Product: gcc
Version: 8.2.1
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Created attachment 46028
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46028&action=edit
test case
An ICE was triggered when building glibc testsuite (after a glibc rebase)
against upstream gcc-8-branch (as of commit below)
2019-01-29 0d5ba57508c5 Backport ARC patches.
Triggering source code file attached.
arc-buildroot-linux-gnu-gcc -O2 -c tst-tls1.i
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Subject: [Bug inline-asm/89839] New: section not reset to text for top level asm
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Bug ID: 89839
Summary: section not reset to text for top level asm
Product: gcc
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The ELF section from the previous function doesn't get reset before top level
asm statements:
e.g.
__attribute__((section("foo"))) void func(void)
{
}
asm("foo:\n");
gcc -S gives
.section foo,"ax",@progbits <----------------- sets the section
.globl func
.type func, @function
func:
.LFB0:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
nop
popq %rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE0:
.size func, .-func
<--------------------------- no section reset before the asm
#APP
foo:
The problem is if foo is some section with special behavior (for example
initcall sections in the Linux kernel) this can cause crashes. I've seen such
problems with LTO on the Linux kernel.
gcc should always reset the section to .text before emitting top level asm.
See with 8.x, but also trunk.
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Subject: [Bug inline-asm/89839] section not reset to text for top level asm
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
No, toplevel inline-asm should never assume what section it is in.
>From gcc-bugs-return-638580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 01:11:57 2019
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails on power 7
Date: Wed, 27 Mar 2019 01:11:00 -0000
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--- Comment #5 from bin cheng <amker at gcc dot gnu.org> ---
Thanks very much for reporting and fixing the issue.
>From gcc-bugs-return-638581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 01:39:58 2019
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Subject: [Bug inline-asm/89839] section not reset to text for top level asm
Date: Wed, 27 Mar 2019 01:39:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|INVALID |DUPLICATE
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This has been true even of non -flto, see dup, PR 79425.
*** This bug has been marked as a duplicate of bug 79425 ***
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Subject: [Bug c++/79425] Inline assembly getting clobbered in some case
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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CC| |andi-gcc at firstfloor dot org
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89839 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 01:41:06 2019
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Subject: [Bug c++/79425] Inline assembly getting clobbered in some case
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Marina Minkin from comment #3)
> What do you mean by "You need to set the section to verify correct in top
> level inline-asm and then"?
.text
...
.previous
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Subject: [Bug inline-asm/89839] section not reset to text for top level asm
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See also PR 35895
>From gcc-bugs-return-638585-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 04:41:18 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/57021] Better error message for * missing an expression or rather using a non-type as a cast
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |dmalcolm at gcc dot gnu.org,
| |dodji at gcc dot gnu.org
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostics maintainers
>From gcc-bugs-return-638586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 05:43:22 2019
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89840] New: [Coarray] CO_BROADCAST: Missing finalization/deallocation of allocatable components
Date: Wed, 27 Mar 2019 05:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89840
Bug ID: 89840
Summary: [Coarray] CO_BROADCAST: Missing
finalization/deallocation of allocatable components
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: damian at sourceryinstitute dot org
Target Milestone: ---
This report is simply to provide a test case for Bug 64777, which was closed
for lack of a test case. Because this test cases compiles with OpenCoarrays,
which does not yet support derived-type arguments for co_broadcast, this test
case cannot fully demonstrate the issue, but it seems important to have a test
case that captures the issue for future work once co_broadcast accepts
derived-type arguments. A more complete test case would also include an
allocatable component inside the derived type:
$cat pr64777.f90
module foo_module
implicit none
type foo
contains
final :: done
end type
contains
subroutine done(this)
type(foo) this
print *,"Finalizing on image ",this_image()
end subroutine
end module
use foo_module
implicit none
type(foo) bar
call co_broadcast(bar,source_image=1)
end
$caf pr64777.f90
$cafrun -n 2 ./a.out
Fortran runtime error on image 1: Unsupported data type in collective: 80
Fortran runtime error on image 2: Unsupported data type in collective: 80
Error: Command:
`/home/rouson/Builds/opt/mpich/3.2/gnu/9.0.1/bin/mpiexec -n 2 ./a.out`
failed to run.
>From gcc-bugs-return-638587-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 05:47:48 2019
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Subject: [Bug fortran/64777] [Coarray] CO_BROADCAST: Finalization/dealloc of alloc components missing
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Damian Rouson <damian at sourceryinstitute dot org> changed:
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| |g
--- Comment #3 from Damian Rouson <damian at sourceryinstitute dot org> ---
I just added test case in Bug 89840.
>From gcc-bugs-return-638588-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 08:41:47 2019
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Subject: [Bug c++/89833] [9 Regression] sorry, unimplemented: string literal in function template signature
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/89829] incorrect profile data is used during profiledbootstrap
Date: Wed, 27 Mar 2019 08:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89829
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |jsm28 at gcc dot gnu.org
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Serge Belyshev from comment #0)
> Looking at the *.gcda timestamps, I noticed that incorrect data (the one
> from stageprofile libgcc build) is used, and correct one (from stagetrain)
> is discarded.
>
> The fix is just to revert r254150 which effectively undid 4-stage
> profiledbootstrap to a previous status quo where only libgcc training data
> was used.
Thanks for report. Yes, I can confirm that reversion is the proper fix.
>
> Also note that the r254150 confusion probably stems from the fact that there
> are two stagefeedback-start:: rules in the Makefile.tpl, where the first one
> is generated from stage[+id+]-start:: template. The corresponding recipes
> are executed both, and they are not independent as the first one renames
> directory structure by doing 'make stage'. This (ab)use of double-colon
> rules is not recommended by the GNU make documentation, see
> https://www.gnu.org/software/make/manual/html_node/Double_002dColon.
> html#Double_002dColon .
I'm adding here Jakub and Joseph, Makefile gurus.
>From gcc-bugs-return-638590-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 08:45:05 2019
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Subject: [Bug bootstrap/89829] incorrect profile data is used during profiledbootstrap
Date: Wed, 27 Mar 2019 08:45:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Serge Belyshev from comment #2)
> On the other hand, benchmarking shows that better training brings no
> advantage. Or rather, slight measurable regression is apparent:
>
> option | training dataset | benchmark | compiler
> binary
> | | time, s | size,
> MB
> -----------------------------------------------------------------------------
> --
> bootstrap | N/A | 11.203 | 32.2
> profiledbootstrap | none | 11.518 | 38.0
> profiledbootstrap | libgcc | 10.091 | 30.1
> profiledbootstrap | stagetrain | 10.130 | 30.8
> profiledbootstrap | libgcc+stagetrain | 10.116 | 30.9
> profiledbootstrap | as above + combined tree | 10.128 | 30.9
> -----------------------------------------------------------------------------
> ---
>
> Thus, some tuning is needed, I guess.
>
> Notes: BOOT_CFLAGS=-Ofast was used for the above. Benchmark is cc1files
> from gcc 3.4, compiled by compiler under test with -Ofast. Time values are
> averages of 100 runs, standard error of mean is about 0.001 s, sample
> standard deviaton is 0.011 s.
I did some speed comparison among GCC builds last year, please take a look:
https://gcc.gnu.org/ml/gcc/2018-03/msg00057.html
>From gcc-bugs-return-638591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 08:50:37 2019
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Subject: [Bug c++/89833] [9 Regression] sorry, unimplemented: string literal in function template signature
Date: Wed, 27 Mar 2019 08:50:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. I think this is only a regression against recent trunk. It's a new C++2a
feature which isn't supported in any released version.
>From gcc-bugs-return-638592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:22:36 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/85537] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 09:22:00 -0000
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue seems to be that the indirect call doesn't set up the static
chain and this is because appearantly bar_ptr has static storage duration:
foo ()
{
static voidD.27 (*<T5c1>) (void) bar_ptrD.3873 = bar_implD.3867;
integer(kind=4)D.8 D.3885;
voidD.27 (*<T5c1>) (void) bar_ptr.2_1;
integer(kind=4)D.8 _2;
<bb 2> :
_2 = 0;
CHAIN.5_4(D)->aD.3880 = _2;
bar_impl (); [static-chain: CHAIN.5_4(D)]
bar_ptr.2_1 = bar_ptrD.3873;
bar_ptr.2_1 ();
return;
I think this isn't supported:
void foo()
{
int a;
int bar()
{
return a;
}
static int (*bp)() = bar;
bp();
}
> ./cc1 -quiet t.c
t.c: In function ‘foo’:
t.c:9:24: error: initializer element is not constant
9 | static int (*bp)() = bar;
| ^~~
I'm not sure how bar_ptr ends up statically allocated, that must be an
error on the FE side - I'd have expected a SAVE to be needed? And
the FE indeed accepts
procedure(ibar), pointer, save :: bar_ptr => bar_impl
but it should probably reject that. The IL it emits is the same, with
or without the save.
TREE_STATIC is set here:
if (!sym->attr.use_assoc
&& (sym->attr.save != SAVE_NONE || sym->attr.data
|| (sym->value && sym->ns->proc_name->attr.is_main_program)))
TREE_STATIC (decl) = 1;
beacuse sym->attr.save == SAVE_IMPLICIT
As said, the testcase is invalid if it needs SAVE since that prolongs
lifetime of the static chain over the duration of the contained function.
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails
Date: Wed, 27 Mar 2019 09:25:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
CC| |ro at gcc dot gnu.org
Summary|New test case |New test case
|gcc.dg/vect/pr81740-2.c |gcc.dg/vect/pr81740-2.c
|introduced in r269938 fails |introduced in r269938 fails
|on power 7 |
Ever confirmed|0 |1
--- Comment #6 from Rainer Orth <ro at gcc dot gnu.org> ---
sparc-sun-solaris2.11 had the same failure, and the proposed fix turned the
testcase
UNSUPPORTED, too.
>From gcc-bugs-return-638593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:25:02 2019
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Subject: [Bug fortran/85537] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 09:25:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Probably missed handling in add_init_expr_to_sym which needs to special case
procedure-pointers to nested functions?
>From gcc-bugs-return-638594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:25:38 2019
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Subject: [Bug fortran/89841] New: improper descriptor information passed to C
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Bug ID: 89841
Summary: improper descriptor information passed to C
Product: gcc
Version: 9.0
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Created attachment 46029
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46029&action=edit
UNIX archive with test case
The attached archive contains a Fortran main program and a C source file. It
can be compiled with
gcc -c assumed_shape_01_pos.c
gfortran assumed_shape_01_pos.f90 assumed_shape_01_pos.o
Running the resulting executable shows a failure to properly pass the
descriptor information to C. Since the dummy arguments are declared
assumed-shape, that->attribute should have the value CFI_attribute_other even
if the actual argument is POINTER or ALLOCATABLE. Furthermore, the lower bounds
are also not remapped as is required for a CFI_attribute_other descriptor.
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails
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--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 27 Mar 2019, ro at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89834
>
> Rainer Orth <ro at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|UNCONFIRMED |NEW
> Last reconfirmed| |2019-03-27
> CC| |ro at gcc dot gnu.org
> Summary|New test case |New test case
> |gcc.dg/vect/pr81740-2.c |gcc.dg/vect/pr81740-2.c
> |introduced in r269938 fails |introduced in r269938 fails
> |on power 7 |
> Ever confirmed|0 |1
>
> --- Comment #6 from Rainer Orth <ro at gcc dot gnu.org> ---
> sparc-sun-solaris2.11 had the same failure, and the proposed fix turned the
> testcase
> UNSUPPORTED, too.
Please somebody why tested apply the fix.
>From gcc-bugs-return-638598-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:32:44 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Wed, 27 Mar 2019 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89463
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |9.0
Resolution|--- |FIXED
Known to fail| |8.3.0
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 9.
>From gcc-bugs-return-638597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:32:31 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Wed, 27 Mar 2019 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89463
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Mar 27 09:31:53 2019
New Revision: 269961
URL: https://gcc.gnu.org/viewcvs?rev=269961&root=gcc&view=rev
Log:
2019-03-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/89463
* tree-ssa-dce.c (remove_dead_stmt): Take output vector to
queue edges to remove.
(eliminate_unnecessary_stmts): Remove dead PHIs alongside
dead stmts. Delay edge removal until PHIs are removed to
make debug-stmt creation not confused by seemingly degenerate
PHIs.
* gcc.dg/guality/pr89463.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/guality/pr89463.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-dce.c
>From gcc-bugs-return-638599-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:36:31 2019
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Subject: [Bug fortran/89842] New: CFI_allocate fails to allocate object
Date: Wed, 27 Mar 2019 09:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89842
Bug ID: 89842
Summary: CFI_allocate fails to allocate object
Product: gcc
Version: 9.0
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Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Created attachment 46030
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UNIX archive with test case
Please compile the test code from the attached archive as follows:
gcc -g -c allocate_01_pos.c
gfortran -g -ftraceback allocate_01_pos.f90 allocate_01_pos.o
The resulting executable fails with symptoms of memory corruption that vary
between runs. Not uncommonly, the following error message is printed:
a.out: malloc.c:2399: sysmalloc: Assertion `(old_top == (((mbinptr) (((char *)
&((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd))))
&& old_size == 0) || ((unsigned long) (old_size) >= (unsigned
long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2
*(sizeof(size_t))) - 1)) & ~((2 *(sizeof(size_t))) - 1))) && ((old_top)->size &
0x1) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed.
Program received signal SIGABRT: Process abort signal.
Backtrace for this error:
#0 0x7f705b2bffdf in ???
#1 0x7f705b2bff67 in ???
#2 0x7f705b2c1339 in ???
#3 0x7f705b30419c in ???
#4 0x7f705b306076 in ???
#5 0x7f705b306a80 in ???
#6 0x7f705b308d93 in ???
#7 0x7f705bfb07dd in CFI_allocate
at ../../../libgfortran/runtime/ISO_Fortran_binding.c:257
#8 0x400ed6 in globalp
at
/home/hpc/pr28fa/a2832ba/fortran_tests/f18/interop/functions/allocate_01_pos.c:14
#9 0x400a39 in alloc_01
at
/home/hpc/pr28fa/a2832ba/fortran_tests/f18/interop/functions/allocate_01_pos.f90:21
#10 0x400e8e in main
at
/home/hpc/pr28fa/a2832ba/fortran_tests/f18/interop/functions/allocate_01_pos.f90:14
Aborted (core dumped)
>From gcc-bugs-return-638600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:45:55 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
Date: Wed, 27 Mar 2019 09:45:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
Assignee|marxin at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
Using -fdbg-cnt option:
-fdbg-cnt=vect_loop:0 -fdbg-cnt=vect_loop:4:5:power.fppized
I was able to track that to a single vectorization that happens here:
308 !! Set up frequency vector(s)
309 tmppower => first_power
310 ipower = 1
311 do while(associated(tmppower))
312 if ( tmppower%nofreq>1 ) then
313 freqstep = (tmppower%freqlast-tmppower%freqfirst)
&
314 / real(tmppower%nofreq - 1, kind=rfp)
315 else
316 freqstep = 0.0_rfp
317 end if
318 freq = tmppower%freqfirst
319 do ifreq = 1, tmppower%nofreq <------ HERE
320 frequency(ifreq,ipower) = freq
321 freq = freq + freqstep
322 end do
323 tmppower => tmppower%next
324 ipower = ipower + 1
325 end do
vect dump:
...
power.fppized.f90:319:0: note: Runtime profitability threshold = 4
power.fppized.f90:319:0: note: Static estimate profitability threshold = 9
power.fppized.f90:319:0: note: epilog loop required
power.fppized.f90:319:0: note: vect_can_advance_ivs_p:
power.fppized.f90:319:0: note: Analyze phi: freq_20 = PHI <pretmp_1948(136),
freq_728(180)>
power.fppized.f90:319:0: note: Analyze phi: ifreq_1653 = PHI <1(136),
ifreq_729(180)>
power.fppized.f90:319:0: note: Analyze phi: .MEM_137 = PHI <.MEM_134(136),
.MEM_727(180)>
power.fppized.f90:319:0: note: reduc or virtual phi. skip.
***dbgcnt: upper limit 5 reached for vect_loop.***
power.fppized.f90:319:0: optimized: loop vectorized using 32 byte vectors
power.fppized.f90:319:0: note: === vec_transform_loop ===
power.fppized.f90:319:0: note: Profitability threshold is 4 loop iterations.
...
which leads to following assembly:
.L248:
movl 88(%rdi), %esi
vmovsd 96(%rdi), %xmm2
cmpl $1, %esi
jle .L243
vmovsd 104(%rdi), %xmm1
leal -1(%rsi), %eax
vcvtsi2sdl %eax, %xmm5, %xmm3
vsubsd %xmm2, %xmm1, %xmm1
testl %esi, %esi
movl %r10d, %r9d
vdivsd %xmm3, %xmm1, %xmm3
cmovg %esi, %r9d
cmpl $3, %esi
jle .L371
vaddsd %xmm2, %xmm3, %xmm0
movl %r9d, %ecx
shrl $2, %ecx
vaddsd %xmm3, %xmm0, %xmm1
salq $5, %rcx
vunpcklpd %xmm0, %xmm2, %xmm0
vaddsd %xmm3, %xmm1, %xmm4
addq %r8, %rcx
movq %r8, %rax
vunpcklpd %xmm4, %xmm1, %xmm1
vmulsd %xmm6, %xmm3, %xmm4
vinsertf128 $0x1, %xmm1, %ymm0, %ymm0
vbroadcastsd %xmm4, %ymm4
.p2align 4,,10
.p2align 3
.L250:
vmovapd %ymm0, %ymm1
vmovupd %ymm1, (%rax)
addq $32, %rax
vaddpd %ymm4, %ymm0, %ymm0
cmpq %rax, %rcx
jne .L250
movl %r9d, %eax
andl $-4, %eax
vcvtsi2sdl %eax, %xmm5, %xmm0
leal 1(%rax), %ecx
vfmadd231sd %xmm3, %xmm0, %xmm2
cmpl %r9d, %eax
je .L251
movslq %ecx, %rcx
addq %rdx, %rcx
addl $2, %eax
vmovsd %xmm2, (%r11,%rcx,8)
vaddsd %xmm3, %xmm2, %xmm2
cmpl %esi, %eax
jg .L251
.L270:
movslq %eax, %rcx
addq %rdx, %rcx
incl %eax
vmovsd %xmm2, (%r11,%rcx,8)
vaddsd %xmm3, %xmm2, %xmm2
cmpl %eax, %esi
jl .L251
cltq
addq %rdx, %rax
vmovsd %xmm2, (%r11,%rax,8)
.L251:
movq 136(%rdi), %rdi
addq %r15, %rdx
addq %r12, %r8
testq %rdi, %rdi
jne .L248
So there's probably nothing we can do right now? I'm removing wrong-code as
it's about floating point precision
when using -Ofast and vectors, which is a known limitation if I'm correct.
>From gcc-bugs-return-638601-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:49:01 2019
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Subject: [Bug fortran/89843] New: CFI_section delivers incorrect result descriptor
Date: Wed, 27 Mar 2019 09:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89843
Bug ID: 89843
Summary: CFI_section delivers incorrect result descriptor
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Created attachment 46031
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UNIX archive with test case
The source code in the attached archive can be compiled with
gcc -c section_01_pos.c
gfortran section_01_pos.f90 section_01_pos.o
Running the executable reveals that CFI_section does not produce a correct
descriptor. Both queries for contiguity and the size of the resulting array
deliver incorrect values.
>From gcc-bugs-return-638602-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 09:58:50 2019
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Subject: [Bug fortran/89844] New: CFI_setpointer produces wrong descriptor
Date: Wed, 27 Mar 2019 09:58:00 -0000
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Bug ID: 89844
Summary: CFI_setpointer produces wrong descriptor
Product: gcc
Version: 9.0
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UNIX archive with test case
The source code in the attached archive can be compiled with
gcc -c setpointer_01_pos.c
gfortran setpointer_01_pos.f90 setpointer_01_pos.o
Running the executable reveals that
(1) referencing the assigned pointer does not supply the values for the
assigned target
(2) the association with the target is not set correctly
(3) the supplied lower bound is not set correctly
>From gcc-bugs-return-638603-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:04:49 2019
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Subject: [Bug middle-end/89845] New: Consider improving division and modulo by constant if highpart multiply is cheap
Date: Wed, 27 Mar 2019 10:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89845
Bug ID: 89845
Summary: Consider improving division and modulo by constant if
highpart multiply is cheap
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The
https://arxiv.org/pdf/1902.01961.pdf
paper shows some possible improvements for the division and modulo by constant
(and modulo by constant equality comparison against 0).
>From gcc-bugs-return-638604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:06:46 2019
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Subject: [Bug fortran/85537] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 10:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85537
--- Comment #15 from janus at gcc dot gnu.org ---
(In reply to Richard Biener from comment #13)
> And the FE indeed accepts
>
> procedure(ibar), pointer, save :: bar_ptr => bar_impl
>
> but it should probably reject that.
Indeed this is only valid since Fortran 2008:
$ gfortran c0.f90 -std=f2003
c0.f90:12:53:
12 | procedure(ibar), pointer :: bar_ptr => bar_impl
| 1
Error: Fortran 2008: non-NULL pointer initialization at (1)
>From gcc-bugs-return-638605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:11:59 2019
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89846] New: CFI_select_part creates incorrect descriptor
Date: Wed, 27 Mar 2019 10:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89846
Bug ID: 89846
Summary: CFI_select_part creates incorrect descriptor
Product: gcc
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Created attachment 46033
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46033&action=edit
UNIX archive with test case
Compiling the source files in the attached archive with
gcc -c subobj_01_pos.c
gfortran subobj_01_pos.f90 subobj_01_pos.o
and executing the result reveals a buggy descriptor created by CFI_select_part:
Particularly, the size of the resulting array is incorrect. Within C, the
contiguity is incorrectly set.
>From gcc-bugs-return-638606-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:12:55 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89847] New: Simplify subexpressions of % constant
Date: Wed, 27 Mar 2019 10:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89847
Bug ID: 89847
Summary: Simplify subexpressions of % constant
Product: gcc
Version: 9.0
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+++ This bug was initially created as a clone of Bug #89845 +++
The
https://arxiv.org/pdf/1902.01961.pdf
paper also mentions clang is able to optimize:
int f1 (int x) { return (31 * x + 27961) & 15; }
unsigned f2 (unsigned x) { return (31 * x + 27961) & 15; }
into:
return (9 - x) & 15;
while gcc can't. Of course it should be done only if the operand of %/& (or
narrowing cast) isn't used multiple times (to be precise, isn't used outside of
the &/&/cast operand) and after giving say SCCVN a chance to merge the same
computations from multiple different spots, but then we can really simplify the
constants there (modulo the outer constant) and multiplications by constants
etc.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89845
[Bug 89845] Consider improving division and modulo by constant if highpart
multiply is cheap
>From gcc-bugs-return-638607-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:19:26 2019
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 10:19:00 -0000
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--- Comment #16 from Tiziano Müller <dev-zero at gentoo dot org> ---
can confirm, changing the reproducer to
procedure(ibar), pointer :: bar_ptr => null()
bar_ptr => bar_impl
makes it generate valid code with the warning
Warning: trampoline generated for nested function 'bar_impl'
[-Wtrampolines]
>From gcc-bugs-return-638608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:20:44 2019
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Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
Date: Wed, 27 Mar 2019 10:20:00 -0000
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yeah, it should even add _extra_ precision because it does less rounding steps.
I wonder what the difference in frequency(ifreq,ipower) is when comparing
vectorization vs. non-vectorization.
>From gcc-bugs-return-638609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:28:38 2019
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 10:28:00 -0000
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--- Comment #17 from janus at gcc dot gnu.org ---
(In reply to Tiziano Müller from comment #16)
> can confirm, changing the reproducer to
>
> procedure(ibar), pointer :: bar_ptr => null()
> bar_ptr => bar_impl
>
> makes it generate valid code
Also this is only allowed since Fortran 2008:
bar_ptr => bar_impl
1
Error: Fortran 2008: Internal procedure ‘bar_impl’ is invalid in procedure
pointer assignment at (1)
>From gcc-bugs-return-638610-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:33:47 2019
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 10:33:00 -0000
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--- Comment #18 from janus at gcc dot gnu.org ---
(In reply to Richard Biener from comment #13)
> As said, the testcase is invalid if it needs SAVE since that prolongs
> lifetime of the static chain over the duration of the contained function.
I agree.
Looking into Fortran 2008, one finds:
R1217 initial-proc-target is procedure-name
and
C1220(R1217) The procedure-name shall be the name of a nonelemental external or
module procedure, or a specific intrinsic function listed in 13.6 and not
marked with a bullet (•).
Note that this does not list internal procedures.
>From gcc-bugs-return-638611-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:38:02 2019
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Subject: [Bug tree-optimization/89499] [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
Date: Wed, 27 Mar 2019 10:38:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started to ICE with r230072, before that it has been rejected.
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Subject: [Bug c++/47488] sorry, unimplemented: string literal in function template signature
Date: Wed, 27 Mar 2019 10:44:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2011-01-27 10:56:51 |2019-3-27
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Clang edn EDG both accept the examples in comment 1 and comment 2, producing
the same symbols.
For comment 1 they emit _Z1gIiE1NIXszcl1fcvT__ELA1_KcEEEERKS1_
For comment 2 they emit _Z1gIiE1NIXszcl1fIT_ELA1_KcEEEERKS1_
They both reject comment 5.
Clang says:
c5.cc:4:28: error: definition with same mangled name
'_Z1gIcEvT_1NIXcl1fcvPKS0_LA2_KcEEEE' as another definition
template <typename T> void g(T, N<f((const T*)"2")>) { }
^
c5.cc:3:28: note: previous definition is here
template <typename T> void g(T, N<f((const T*)"1")>) { }
^
1 error generated.
And EDG says:
eccp: diagnostics generated from compilation of c5.int.c:
c5.cc:4:96: error: conflicting types for ‘_Z1gIcEvT_1NIXcl1fcvPKS0_LA2_KcEEEE’
template <typename T> void g(T, N<f((const T*)"2")>) { }
^
c5.cc:3:96: note: previous declaration of ‘_Z1gIcEvT_1NIXcl1fcvPKS0_LA2_KcEEEE’
was here
template <typename T> void g(T, N<f((const T*)"1")>) { }
^
c5.cc: In function ‘main’:
c5.cc:8:49: error: incompatible type for argument 2 of
‘_Z1gIcEvT_1NIXcl1fcvPKS0_LA2_KcEEEE’
g('1', N<'1'>());
^
c5.cc:4:138: note: expected ‘struct _Z1NILi50EE’ but argument is of type
‘struct _Z1NILi49EE’
template <typename T> void g(T, N<f((const T*)"2")>) { }
^
c5.cc: At top level:
c5.cc:4:89: error: conflicting types for ‘_Z1gIcEvT_1NIXcl1fcvPKS0_LA2_KcEEEE’
template <typename T> void g(T, N<f((const T*)"2")>) { }
^
c5.cc:3:89: note: previous definition of ‘_Z1gIcEvT_1NIXcl1fcvPKS0_LA2_KcEEEE’
was here
template <typename T> void g(T, N<f((const T*)"1")>) { }
^
eccp: end of diagnostics from compilation of c5.int.c
eccp: gcc compilation of c5.int.c returned an exit status of 1
>From gcc-bugs-return-638613-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:51:18 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89499] [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
Date: Wed, 27 Mar 2019 10:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89499
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Looking more closely, the thing is that this stuff (e.g. the .UNIQUE calls)
require the execute_oacc_device_lower pass to transform it or clean it up.
But that pass starts with:
tree attrs = oacc_get_fn_attrib (current_function_decl);
if (!attrs)
/* Not an offloaded function. */
return 0;
so does nothing in functions that don't have the OpenACC attributes.
Thus, either we must prevent inlining of functions with those attributes into
functions without those attributes (are there any other incompatibilities? I
admit I'm not familiar enough with OpenACC to judge if inlining say #pragma acc
routine vector into #pragma acc routine gang (if such things exists) or vice
versa etc. is ok), which would be something that could be done in
can_inline_edge_p.
Or it is inlinable, but we need some cleanup, in that case perhaps have some
cfun->* flag that would be initially set to whether the function has
oacc_get_fn_attrib and would be ored into functions into which those functions
were inlined, and then the oaccdevlower pass would clean that stuff up or
whatever.
At least short term the first option seems easier (and backportable).
Do all oacc_get_fn_attrib functions have these IFN_UNIQUE calls, or only some
subset of them (e.g. only if they contain certain other OpenACC constructs in
them)?
>From gcc-bugs-return-638614-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:52:17 2019
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 10:52:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|wrong-code |accepts-invalid
Status|NEW |ASSIGNED
Known to work|6.4.0 |
Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org
Target Milestone|7.5 |9.0
Known to fail| |5.5.0, 6.5.0
--- Comment #19 from janus at gcc dot gnu.org ---
I'll take care of fixing this.
>From gcc-bugs-return-638615-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 10:54:08 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 10:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
CC| |rguenth at gcc dot gnu.org
Assignee|rguenth at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not really working on this.
>From gcc-bugs-return-638616-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:02:58 2019
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89848] New: [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2099 with -O2 -msse2 -mtune=pentium3m
Date: Wed, 27 Mar 2019 11:02:00 -0000
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Bug ID: 89848
Summary: [8/9 Regression] ICE: in convert_op, at
config/i386/i386.c:2099 with -O2 -msse2
-mtune=pentium3m
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: i686-pc-linux-gnu
Created attachment 46034
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46034&action=edit
reduced testcase
This triggers also after PR89827 fix.
Compiler output:
$ i686-pc-linux-gnu-gcc -O2 -msse2 -mtune=pentium3m testcase.c
during RTL pass: stv
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in convert_op, at
config/i386/i386.c:2099
7 | }
| ^
0x721299 dimode_scalar_chain::convert_op(rtx_def**, rtx_insn*)
/repo/gcc-trunk/gcc/config/i386/i386.c:2099
0x117b8f7 dimode_scalar_chain::convert_insn(rtx_insn*)
/repo/gcc-trunk/gcc/config/i386/i386.c:2169
0x117bd14 scalar_chain::convert()
/repo/gcc-trunk/gcc/config/i386/i386.c:2409
0x117bd14 scalar_chain::convert()
/repo/gcc-trunk/gcc/config/i386/i386.c:2393
0x117c7cc convert_scalars_to_vector
/repo/gcc-trunk/gcc/config/i386/i386.c:2475
0x117c7cc execute
/repo/gcc-trunk/gcc/config/i386/i386.c:2593
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ i686-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269960-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.1/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-sysroot=/usr/i686-pc-linux-gnu
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld
--with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269960-checking-yes-rtl-df-extra-i686
Thread model: posix
gcc version 9.0.1 20190327 (experimental) (GCC)
>From gcc-bugs-return-638617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:05:09 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Wed, 27 Mar 2019 11:05:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed or further work will be done on this? If the latter, does it need to be
covered by two PRs?
>From gcc-bugs-return-638618-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:06:23 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Wed, 27 Mar 2019 11:06:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jakub at gcc dot gnu.org
>From gcc-bugs-return-638619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:09:52 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 11:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84101
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Just looking at what we feed combine:
(insn 9 8 15 2 (set (reg:V2DI 89)
(vec_concat:V2DI (reg:DI 90 [ num ])
(reg:DI 92))) "t.c":9:12 4182 {vec_concatv2di}
(expr_list:REG_DEAD (reg:DI 92)
(expr_list:REG_DEAD (reg:DI 90 [ num ])
(nil))))
(insn 15 9 16 2 (set (reg/i:TI 0 ax)
(subreg:TI (reg:V2DI 89) 0)) "t.c":10:1 65 {*movti_internal}
(expr_list:REG_DEAD (reg:V2DI 89)
(nil)))
I wonder why we can't "simplify" this into individual sets of the
hardreg pair? fwprop sees the same thing so that's another possible
fixing point. Not sure if the backend in the end would like to
see the above TImode set decomposed though...
>From gcc-bugs-return-638620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:10:29 2019
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From: "ville.voutilainen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Wed, 27 Mar 2019 11:10:00 -0000
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Fixed; there are other open PRs, more patches will be incoming, no need to keep
this one open. Closing.
>From gcc-bugs-return-638621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:10:35 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Wed, 27 Mar 2019 11:10:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
What is the current status of this PR?
>From gcc-bugs-return-638622-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:16:10 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 11:16:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #14)
> Just looking at what we feed combine:
>
> (insn 9 8 15 2 (set (reg:V2DI 89)
> (vec_concat:V2DI (reg:DI 90 [ num ])
> (reg:DI 92))) "t.c":9:12 4182 {vec_concatv2di}
> (expr_list:REG_DEAD (reg:DI 92)
> (expr_list:REG_DEAD (reg:DI 90 [ num ])
> (nil))))
> (insn 15 9 16 2 (set (reg/i:TI 0 ax)
> (subreg:TI (reg:V2DI 89) 0)) "t.c":10:1 65 {*movti_internal}
> (expr_list:REG_DEAD (reg:V2DI 89)
> (nil)))
>
> I wonder why we can't "simplify" this into individual sets of the
> hardreg pair? fwprop sees the same thing so that's another possible
> fixing point. Not sure if the backend in the end would like to
> see the above TImode set decomposed though...
We surely want to decompose it in these testcases. The big question is find
out in which pass to do that (which has a reasonable infrastructure), what cost
and what not to check etc. The testcase show something that is clearly
undesirable without any costs, vec_concating scalar regs into a vector only to
subreg it into a scalar hard reg... But now, if it wasn't into a GPR reg, but
just TImode in some pseudo that it would be beneficial to reload into a vector
reg and then operate in vector reg, it wouldn't be a win. On the other side,
if we don't get rid of those vector modes before reload, RA will choose vector
registers for those.
>From gcc-bugs-return-638623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:22:33 2019
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Subject: [Bug target/89827] [8 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Wed, 27 Mar 2019 11:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Known to work| |9.0
Summary|[8/9 Regression] ICE: in |[8 Regression] ICE: in
|convert_op, at |convert_op, at
|config/i386/i386.c:2098 |config/i386/i386.c:2098
|with -Os -maes |with -Os -maes
Known to fail|9.0 |
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-638624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:35:30 2019
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Subject: [Bug libstdc++/89825] Jump table for variant visitation could be shortened for never empty variants
Date: Wed, 27 Mar 2019 11:35:00 -0000
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Fixed.
>From gcc-bugs-return-638625-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:36:49 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 11:36:00 -0000
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--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #15)
> (In reply to Richard Biener from comment #14)
> > Just looking at what we feed combine:
> >
> > (insn 9 8 15 2 (set (reg:V2DI 89)
> > (vec_concat:V2DI (reg:DI 90 [ num ])
> > (reg:DI 92))) "t.c":9:12 4182 {vec_concatv2di}
> > (expr_list:REG_DEAD (reg:DI 92)
> > (expr_list:REG_DEAD (reg:DI 90 [ num ])
> > (nil))))
> > (insn 15 9 16 2 (set (reg/i:TI 0 ax)
> > (subreg:TI (reg:V2DI 89) 0)) "t.c":10:1 65 {*movti_internal}
> > (expr_list:REG_DEAD (reg:V2DI 89)
> > (nil)))
> >
> > I wonder why we can't "simplify" this into individual sets of the
> > hardreg pair? fwprop sees the same thing so that's another possible
> > fixing point. Not sure if the backend in the end would like to
> > see the above TImode set decomposed though...
>
> We surely want to decompose it in these testcases. The big question is find
> out in which pass to do that (which has a reasonable infrastructure), what
> cost and what not to check etc. The testcase show something that is clearly
> undesirable without any costs, vec_concating scalar regs into a vector only
> to subreg it into a scalar hard reg... But now, if it wasn't into a GPR
> reg, but just TImode in some pseudo that it would be beneficial to reload
> into a vector reg and then operate in vector reg, it wouldn't be a win. On
> the other side, if we don't get rid of those vector modes before reload, RA
> will choose vector registers for those.
I wonder if we should turn
(subreg:TI (vec_concat:... ))
into
(set (subreg:DI (reg:TI ... 0)))
(set (subreg:DI (reg:TI ... 8)))
which is what we handle nicely it sems. That means sth has to split
out the subreg into a separate instruction again or we need to make
fwprop1 not convert
(insn 9 8 10 2 (set (reg:V2DI 89)
(vec_concat:V2DI (reg:DI 90)
(reg:DI 92))) "t.c":9:12 4182 {vec_concatv2di}
(nil))
(insn 10 9 11 2 (set (reg:TI 86 [ D.1921 ])
(subreg:TI (reg:V2DI 89) 0)) "t.c":9:12 65 {*movti_internal}
(nil))
(insn 11 10 15 2 (set (reg:TI 87 [ <retval> ])
(reg:TI 86 [ D.1921 ])) "t.c":9:12 65 {*movti_internal}
(nil))
(insn 15 11 16 2 (set (reg/i:TI 0 ax)
(reg:TI 87 [ <retval> ])) "t.c":10:1 65 {*movti_internal}
(nil))
into
(insn 9 8 15 2 (set (reg:V2DI 89)
(vec_concat:V2DI (reg:DI 90 [ num ])
(reg:DI 92))) "t.c":9:12 4182 {vec_concatv2di}
(expr_list:REG_DEAD (reg:DI 92)
(expr_list:REG_DEAD (reg:DI 90 [ num ])
(nil))))
(insn 15 9 16 2 (set (reg/i:TI 0 ax)
(subreg:TI (reg:V2DI 89) 0)) "t.c":10:1 65 {*movti_internal}
(expr_list:REG_DEAD (reg:V2DI 89)
(nil)))
but instead massage it into the above suggested form.
>From gcc-bugs-return-638626-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:40:31 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Oh, it's CSE forwarding the subreg already.
>From gcc-bugs-return-638627-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:49:59 2019
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From: "amker at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89849] New: Worse code at O3 because of slp
Date: Wed, 27 Mar 2019 11:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89849
Bug ID: 89849
Summary: Worse code at O3 because of slp
Product: gcc
Version: 9.0
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Hi,
This is the code sample from scovit@IRC:
struct ciao { long a; long b; };
//__declspec(noinline)
__attribute((noinline))
struct ciao square(int num) {
struct ciao beta;
beta.a = num;
beta.b = num*num;
return beta;
}
int main(int a) {
struct ciao tje = square(a);
return tje.a * tje.b;
}
O3 generates:
square:
.LFB0:
.cfi_startproc
movslq %edi, %rax
imull %edi, %edi
movq %rax, %xmm0
movslq %edi, %rdi
movq %rdi, %xmm1
punpcklqdq %xmm1, %xmm0
movaps %xmm0, -24(%rsp)
movq -24(%rsp), %rax
movq -16(%rsp), %rdx
ret
.cfi_endproc
.LFE0:
.size square, .-square
.section .text.startup,"ax",@progbits
.p2align 4
.globl main
.type main, @function
main:
.LFB1:
.cfi_startproc
subq $8, %rsp
.cfi_def_cfa_offset 16
call square
addq $8, %rsp
.cfi_def_cfa_offset 8
imull %edx, %eax
ret
While O1/O2 generate:
square:
.LFB0:
.cfi_startproc
movslq %edi, %rax
imull %edi, %edi
movslq %edi, %rdx
ret
.cfi_endproc
.LFE0:
.size square, .-square
.globl main
.type main, @function
main:
.LFB1:
.cfi_startproc
call square
imull %edx, %eax
ret
Looks like SLP gives:
square (int num)
{
vector(2) long int * vectp.7;
vector(2) long int * vectp.6;
struct ciao D.1917;
long int _1;
int _2;
long int _3;
vector(2) long int _8;
vector(2) long int vect_cst__9;
<bb 2> [local count: 1073741824]:
_1 = (long int) num_4(D);
_2 = num_4(D) * num_4(D);
_3 = (long int) _2;
_8 = {_1, _3};
vect_cst__9 = _8;
MEM[(struct ciao *)&D.1917] = vect_cst__9;
return D.1917;
}
And latter passes failed to resolve it.
>From gcc-bugs-return-638628-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 11:57:23 2019
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 11:57:00 -0000
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--- Comment #20 from janus at gcc dot gnu.org ---
(In reply to janus from comment #18)
> C1220(R1217) The procedure-name shall be the name of a nonelemental external
> or module procedure, or a specific intrinsic function listed in 13.6 and not
> marked with a bullet (•).
>
> Note that this does not list internal procedures.
In contrast to the corresponding restriction for procedure pointer assignments:
C729 (R740) A procedure-name shall be the name of an internal, module, or dummy
procedure, a procedure pointer, an external procedure that is accessed by use
or host association and is referenced in the scoping unit as a procedure or
that has the EXTERNAL attribute, or a specific intrinsic function listed in
13.6 and not marked with a bullet (•).
>From gcc-bugs-return-638629-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:02:17 2019
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |wschmidt at gcc dot gnu.org
--- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I'll take it.
>From gcc-bugs-return-638630-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:16:16 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 12:16:00 -0000
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--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
The following "fixes"
struct ciao { long a; long b; };
struct ciao square(int num) {
struct ciao beta;
beta.a = num;
beta.b = num*num;
return beta;
}
producing wrong code though, somehow forgetting the upper half. The idea
was to give the constructor expansion an idea of the target (TImode reg)
so it can optimize for that. Not sure what goes wrong - I seem to get
all things twice but still somewhat correct...
Index: gcc/expr.c
===================================================================
--- gcc/expr.c (revision 269960)
+++ gcc/expr.c (working copy)
@@ -7018,7 +7018,9 @@ store_field (rtx target, poly_int64 bits
}
}
- temp = expand_normal (exp);
+ temp = expand_expr (exp, target, VOIDmode, EXPAND_NORMAL);//normal
(exp);
+ if (temp == target)
+ return const0_rtx;
/* We don't support variable-sized BLKmode bitfields, since our
handling of BLKmode is bound up with the ability to break
@@ -7641,6 +7643,8 @@ safe_from_p (const_rtx x, tree exp, int
return 0;
return 1;
}
+ else if (TREE_CODE (exp) == SSA_NAME)
+ return 1;
else if (TREE_CODE (exp) == ERROR_MARK)
return 1; /* An already-visited SAVE_EXPR? */
else
>From gcc-bugs-return-638631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:19:02 2019
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Subject: [Bug middle-end/89849] Worse code at O3 because of slp
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
DUP of bug 84101.
*** This bug has been marked as a duplicate of bug 84101 ***
>From gcc-bugs-return-638632-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:19:03 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 12:19:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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CC| |amker at gcc dot gnu.org
--- Comment #19 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89849 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638633-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:23:26 2019
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Subject: [Bug web/87829] Contradiction about -fReorder-Blocks
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
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Known to fail| |7.4.0, 8.3.0
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Reopen..
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
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--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ah.
Index: gcc/expr.c
===================================================================
--- gcc/expr.c (revision 269960)
+++ gcc/expr.c (working copy)
@@ -7018,7 +7018,11 @@ store_field (rtx target, poly_int64 bits
}
}
- temp = expand_normal (exp);
+ temp = expand_expr (exp,
+ known_eq (bitpos, 0) ? target : NULL_RTX,
+ VOIDmode, EXPAND_NORMAL);
+ if (temp == target)
+ return const0_rtx;
/* We don't support variable-sized BLKmode bitfields, since our
handling of BLKmode is bound up with the ability to break
@@ -7641,6 +7645,8 @@ safe_from_p (const_rtx x, tree exp, int
return 0;
return 1;
}
+ else if (TREE_CODE (exp) == SSA_NAME)
+ return 1;
else if (TREE_CODE (exp) == ERROR_MARK)
return 1; /* An already-visited SAVE_EXPR? */
else
>From gcc-bugs-return-638635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:37:10 2019
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Subject: [Bug sanitizer/89832] confusing error message when there is a problem with ASAN_OPTIONS "ERROR: expected '='"
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-27
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-638636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:38:20 2019
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Wed, 27 Mar 2019 12:38:00 -0000
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janus at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #21 from janus at gcc dot gnu.org ---
Another related test case with a dummy procedure in a proc-ptr init, which
currently ICEs, but should be rejected:
module m
implicit none
contains
subroutine foo(dbar)
interface
subroutine dbar()
end subroutine
end interface
procedure(dbar), pointer :: bar_ptr => dbar
call bar_ptr()
end subroutine
end module
program main
use m
implicit none
call foo(bar_impl)
contains
subroutine bar_impl()
integer :: a = 0
write (*,*) "foo"
a = a + 1
end subroutine
end program
>From gcc-bugs-return-638637-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:52:20 2019
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Subject: [Bug fortran/88247] [8/9 Regression] ICE in get_array_ctor_var_strlen, at fortran/trans-array.c:2068
Date: Wed, 27 Mar 2019 12:52:00 -0000
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Wed Mar 27 12:51:43 2019
New Revision: 269962
URL: https://gcc.gnu.org/viewcvs?rev=269962&root=gcc&view=rev
Log:
2019-03-27 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88247
* expr.c (is_subref_array): Permit substrings to be detected
as subref arrays.
* trans-array.c (get_array_ctor_var_strlen): Obtain the length
of deferred length strings. Handle substrings with a NULL end
expression.
(trans_array_constructor): Remove an unnecessary blank line.
(gfc_conv_scalarized_array_ref): Skip to label 'done' if 'decl'
is a pointer array.
(get_array_charlen): If the expression is an array, convert the
first element of the constructor and use its string length. Get
a new charlen if necessary.
(gfc_conv_expr_descriptor): Call 'get_array_charlen' for array
constructor expressions. If the ss_info string length is
available, use that to set the span of character arrays.
* trans-expr.c (gfc_get_expr_charlen): Handle substrings
* trans-stmt.c (trans_associate_var): Set the pointer array
flag for variable targets and constant array constructors. Take
care not to reset the string length or the span in the case of
expressions that are not converted as direct by reference.
2019-03-27 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88247
* gfortran.dg/associate_47.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/associate_47.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 12:53:31 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/89693] [9 Regression] ICE: verify_cgraph_node failed (error: edge points to wrong declaration)
Date: Wed, 27 Mar 2019 12:53:00 -0000
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--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
True. the node that IPA-CP clones is itself a former thunk, expanded
at symbol_table::finalize_compilation_unit time (which I admit is
something I did not anticipate), all the thunk information is copied
to the clone node, so the clone is now a former node itself too. As a
consequence, the first while loop in clone_of_p iterates an extra time
and encounters a node which is not thunk.this_adjusting and returns
false. Even if it sis not check this_adjusting, it would attempt to
find a callee which does not exist and segfault.
At the moment I do not have an idea for a quick fix, unfortunately, I
will keep trying.
>From gcc-bugs-return-638639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 13:14:45 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 13:14:00 -0000
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--- Comment #21 from Richard Biener <rguenth at gcc dot gnu.org> ---
Needs more defensiveness. Also the safe_from_p change might not be safe
in case we ever TER sth like
_1 = BIT_FIELD_REF<vector, ...>;
_2 = BIT_FIELD_REF<vector, ...>;
vector = { _2, _1 };
which we do...
typedef double v2df __attribute__((vector_size(16)));
v2df v;
void foo()
{
v = (v2df){v[1], v[0]};
}
and expand to
(insn 7 6 8 (set (reg:DF 87)
(mem/j/c:DF (plus:DI (reg/f:DI 86)
(const_int 8 [0x8])) [1 v+8 S8 A64])) "t4.c":5:5 -1
(nil))
(insn 8 7 9 (set (mem/c:DF (reg/f:DI 85) [1 v+0 S8 A128])
(reg:DF 87)) "t4.c":5:5 -1
(nil))
...
(insn 11 10 12 (set (reg:DF 90)
(mem/j/c:DF (reg/f:DI 89) [1 v+0 S8 A128])) "t4.c":5:5 -1
(nil))
(insn 12 11 0 (set (mem/c:DF (reg/f:DI 88) [1 v+8 S8 A64])
(reg:DF 90)) "t4.c":5:5 -1
(nil))
after that change :/ So much for this nice trick. The safe_from_p
change would be safe for SSA names we do not TER but for the testcases
we do TER. There's no existing simple test in the C testsuite so I'll
add the above one.
>From gcc-bugs-return-638640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 13:16:46 2019
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Subject: [Bug sanitizer/89832] confusing error message when there is a problem with ASAN_OPTIONS "ERROR: expected '='"
Date: Wed, 27 Mar 2019 13:16:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I propose a patch to upstream:
https://reviews.llvm.org/D59876
>From gcc-bugs-return-638641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 13:25:26 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Wed, 27 Mar 2019 13:25:00 -0000
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--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
But we can side-step this issue with changing the way expand_constructor
works:
Index: gcc/expr.c
===================================================================
--- gcc/expr.c (revision 269963)
+++ gcc/expr.c (working copy)
@@ -7018,7 +7018,16 @@ store_field (rtx target, poly_int64 bits
}
}
- temp = expand_normal (exp);
+ if (REG_P (target)
+ && known_eq (bitpos, 0)
+ && known_eq (bitsize, GET_MODE_BITSIZE (GET_MODE (target))))
+ {
+ temp = expand_expr (exp, target, VOIDmode, EXPAND_NORMAL);
+ if (temp == target)
+ return const0_rtx;
+ }
+ else
+ temp = expand_normal (exp);
/* We don't support variable-sized BLKmode bitfields, since our
handling of BLKmode is bound up with the ability to break
@@ -8191,7 +8202,15 @@ expand_constructor (tree exp, rtx target
if (avoid_temp_mem)
return NULL_RTX;
- target = assign_temp (type, TREE_ADDRESSABLE (exp), 1);
+ if (target && REG_P (target))
+ {
+ rtx tem = gen_reg_rtx (GET_MODE (target));
+ store_constructor (exp, tem, 0, int_expr_size (exp), false);
+ emit_move_insn (target, tem);
+ return target;
+ }
+ else
+ target = assign_temp (type, TREE_ADDRESSABLE (exp), 1);
}
store_constructor (exp, target, 0, int_expr_size (exp), false);
>From gcc-bugs-return-638642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 13:43:28 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Wed, 27 Mar 2019 13:43:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2019-03/msg01299.ht
| |ml
CC|amodra at gmail dot com |
--- Comment #16 from Alan Modra <amodra at gmail dot com> ---
Patch posted.
>From gcc-bugs-return-638643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 13:46:53 2019
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89499] [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
Date: Wed, 27 Mar 2019 13:46:00 -0000
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tschwinge at gcc dot gnu.org
--- Comment #4 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Thanks for the report, and initial analysis.
Unless there is an OpenACC 'bind' clause involved (also 'nohost' clause?)
(which are not yet implemented, so not relevant in this discussion), it is
permissible (and worthwhile for the usual reasons) to inline such functions
into one another, given proper nesting of OpenACC levels of parallelism. The
latter is enforced by construction, by detecting improper caller/callee
combinations (for example, trying to call a 'gang' routine from a 'vector'
context).
By construction, 'IFN_UNIQUE' etc. can only appear in 'oacc function'
functions.
There are 'oacc function' functions that do not contain 'IFN_UNIQUE' etc. (for
example, 'seq' functions, such as math library functions), but which might
still benefit from inlining.
I suppose it is fine to do inlining if the outer function will then be handled
by 'oaccdevlow'.
And, I suppose it will be reasonable to forbid inlining of 'oacc function'
functions into non-'oacc function' functions, because in that case you're not
applying any OpenACC parallelism anyway, at least for a backportable ICE fix,
then later possibly more logic added to allow that.
That will probably be reasonably simple to implement; I'll give it some further
thought, and testing.
>From gcc-bugs-return-638644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 13:54:20 2019
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From: "diane2332 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89832] confusing error message when there is a problem with ASAN_OPTIONS "ERROR: expected '='"
Date: Wed, 27 Mar 2019 13:54:00 -0000
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--- Comment #3 from Diane Meirowitz <diane2332 at gmail dot com> ---
Thank you for fixing this so quickly! This is a huge improvement.
Here are some suggestions to make it even better for those without a lot of
knowledge of ASAn. I think this will be the case for some people using it here
at my employer, at least.
1. Can you add AddressSanitizer to the error message?
2. It would help to say "environment variable ASAN_OPTIONS", rather than
"ASAN_OPTIONS".
>From gcc-bugs-return-638645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:02:26 2019
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Subject: [Bug c++/89850] New: long compile times with -fsanitize=undefined and -Wduplicated-branches
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-Wduplicated-branches
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cat > t.cc <<EOF
class FooBar
{
private:
long long value_;
public:
FooBar() : value_( 0 ) {}
bool isUnused() const
{ return value_ == 0; }
};
struct Stream
{
template<class T>
Stream& operator<<( T const& t )
{
return *this;
}
};
void xxx( Stream& os )
{
FooBar bar;
long long foo = 0;
if( !bar.isUnused() )
{
os << foo << foo << foo << foo << foo << foo << foo
<< foo << foo << foo << foo << foo << foo << foo
<< foo << foo << foo << foo << foo << foo << foo
<< foo << foo << foo << foo << foo << foo << foo;
}
}
EOF
g++ -fsanitize=undefined -Wduplicated-branches -c -o t.o t.cc
>From gcc-bugs-return-638646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:07:38 2019
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Subject: [Bug fortran/89841] improper descriptor information passed to C
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
CC| |pault at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-638647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:10:17 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89842] CFI_allocate fails to allocate object
Date: Wed, 27 Mar 2019 14:10:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
On darwin I get
a.out(30846,0x119e565c0) malloc: can't allocate region
*** mach_vm_map(size=562940412489728) failed (error code=3)
a.out(30846,0x119e565c0) malloc: *** set a breakpoint in malloc_error_break to
debug
CFI_allocate: Failure in memory allocation.
FAIL C: status is 11
>From gcc-bugs-return-638648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:16:18 2019
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Subject: [Bug fortran/89843] CFI_section delivers incorrect result descriptor
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P4
Status|UNCONFIRMED |NEW
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-638649-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:19:54 2019
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Subject: [Bug fortran/89844] CFI_setpointer produces wrong descriptor
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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Priority|P3 |P4
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-638650-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:23:31 2019
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Subject: [Bug fortran/89846] CFI_select_part creates incorrect descriptor
Date: Wed, 27 Mar 2019 14:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89846
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-638651-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:27:37 2019
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Subject: [Bug c++/86932] [8/9 Regression] Empty non-type template parameter pack not considered for SFINAE.
Date: Wed, 27 Mar 2019 14:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86932
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Mar 27 14:27:00 2019
New Revision: 269965
URL: https://gcc.gnu.org/viewcvs?rev=269965&root=gcc&view=rev
Log:
PR c++/86932 - missed SFINAE with empty pack.
The issue here was that when processing the explicit template args in
fn_type_unification we added an empty argument pack for the parameter pack,
so we never tried to do any deduction for it, and therefore never looked at
its type. We need that empty pack behavior for partial ordering, but we
don't want it here, so let's make it conditional on tf_partial.
* pt.c (coerce_template_parms): Don't add an empty pack if
tf_partial.
(fn_type_unification): Pass tf_partial to coerce_template_parms.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/sfinae65.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug c++/86932] [8 Regression] Empty non-type template parameter pack not considered for SFINAE.
Date: Wed, 27 Mar 2019 14:28:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] Empty |[8 Regression] Empty
|non-type template parameter |non-type template parameter
|pack not considered for |pack not considered for
|SFINAE. |SFINAE.
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/89421] [9 Regression] ICE with lambda in template parameter list
Date: Wed, 27 Mar 2019 14:30:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
>From gcc-bugs-return-638654-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 14:52:16 2019
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89851] New: [Regression] std::variant comparison operators violate [variant.relops]
Date: Wed, 27 Mar 2019 14:52:00 -0000
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Bug ID: 89851
Summary: [Regression] std::variant comparison operators violate
[variant.relops]
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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The following function should return `false` according to [variant.relops]:
#include <variant>
using V = std::variant<int, int>;
bool test1() {
V v1{std::in_place_index<0>, 0};
V v2{std::in_place_index<1>, 0};
return v1 == v2;
}
std::variant in GCC-8 was returning `false`, however the variant from GCC-9
returns `true`.
This could be quickly fixed by comparing indexes at the start of each operator.
Another way of fixing is to pass integral_constants instead of types into the
__do_visit function.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Wed, 27 Mar 2019 14:56:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-03-27
Ever confirmed|0 |1
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
AFAIU this PR reports two issues with no or little connection with REPEAT.
(1) The program name conflict with an intrinsic procedure:
program precision
real :: x
print *, precision(x)
end program precision
which gives the error (for any OS)
3 | print *, precision(x)
| 1
Error: Symbol at (1) is not appropriate for an expression
that is not really user friendly.
(2) The reference to the source in run time errors:
subroutine foo(s,n)
implicit none
character(len=1), intent(in) :: s
integer, intent(in) :: n
write(*,*) repeat(s,n)
end subroutine
call foo('a', -1)
end
which gives
% gfc pr89830_2_db.f90
% ./a.out
At line 5 of file pr89830_2_db.f90
Fortran runtime error: Argument NCOPIES of REPEAT intrinsic is negative (its
value is -1)
% gfc ../bug/pr89830_2_db.f90
% ./a.out
At line 5 of file ../bug/pr89830_2_db.f90
Fortran runtime error: Argument NCOPIES of REPEAT intrinsic is negative (its
value is -1)
% gfc /Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/pr89830_2_db.f90
% ./a.out
At line 5 of file
/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/pr89830_2_db.f90
Fortran runtime error: Argument NCOPIES of REPEAT intrinsic is negative (its
value is -1)
i.e., the path to the file given to the compiler. AFAICT this is generic to all
run time error pointing to a source file (mostly I/O errors).
>From comment 5, the reporter's expectation is not clear for me. IMO this should
be solved at the build script level rather that with yet another option.
Note that not all the intrinsic give nice errors
PROGRAM test_spread
INTEGER :: a = 1, b(2) = (/ 1, 2 /), n=-2
WRITE(*,*) SPREAD(A, 1, n) ! "1 1"
WRITE(*,*) SPREAD(B, 1, n) ! "1 1 2 2"
END PROGRAM
gives
Operating system error: Cannot allocate memory
Integer overflow in xmallocarray
and not
Fortran runtime error: Argument NCOPIES of SPREAD intrinsic is negative
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Subject: [Bug c++/89852] New: [9 Regression] ICE in
Date: Wed, 27 Mar 2019 15:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89852
Bug ID: 89852
Summary: [9 Regression] ICE in
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Target Milestone: ---
seen with trunk r269832, the reduced test is a little bit too much reduced ...
$ cat tst_Controller.ii
namespace std {
namespace chrono {
struct a {
int b;
} typedef microseconds;
} // namespace chrono
} // namespace std
namespace ableton {
namespace link {
struct c {
c(double);
};
struct B {
B(double);
};
struct d {
B e;
c f;
std::chrono::microseconds g;
};
namespace {
const auto kAnyTime = std::chrono::a{};
template <typename> void h() {
d {
60., 0., kAnyTime
$ g++ -c -O0 -Werror -Wno-multichar -std=gnu++11 tst_Controller.ii
tst_Controller.ii: In function 'void ableton::link::{anonymous}::h()':
tst_Controller.ii:25:14: internal compiler error: unexpected expression
'(std::chrono::microseconds)ableton::link::{anonymous}::kAnyTime' of kind
implicit_conv_expr
25 | 60., 0., kAnyTime
| ^~~~~~~~
0x5c6940 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:5167
0xeb7394 cxx_eval_outermost_constant_expr
../../src/gcc/cp/constexpr.c:5281
0xebac0e maybe_constant_init_1
../../src/gcc/cp/constexpr.c:5637
0x12dc6bd massage_init_elt
../../src/gcc/cp/typeck2.c:1329
0xf63e32 process_init_constructor_record
../../src/gcc/cp/typeck2.c:1548
0xf63e32 process_init_constructor
../../src/gcc/cp/typeck2.c:1822
0xf63e32 digest_init_r
../../src/gcc/cp/typeck2.c:1218
0x12d536e finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
../../src/gcc/cp/semantics.c:2874
0xf1890b cp_parser_functional_cast
../../src/gcc/cp/parser.c:28318
0xf0fb84 cp_parser_postfix_expression
../../src/gcc/cp/parser.c:7098
0xf0e522 cp_parser_unary_expression
../../src/gcc/cp/parser.c:8469
0xf0df9f cp_parser_cast_expression
../../src/gcc/cp/parser.c:9355
0xf0d0ab cp_parser_binary_expression
../../src/gcc/cp/parser.c:9457
0xf0bf37 cp_parser_assignment_expression
../../src/gcc/cp/parser.c:9754
0xf1270b cp_parser_expression
../../src/gcc/cp/parser.c:9921
0xf14925 cp_parser_expression_statement
../../src/gcc/cp/parser.c:11485
0xf13c97 cp_parser_statement
../../src/gcc/cp/parser.c:11281
0xf1372e cp_parser_statement_seq_opt
../../src/gcc/cp/parser.c:11628
0xf1372e cp_parser_compound_statement
../../src/gcc/cp/parser.c:11582
0xf1317e cp_parser_function_body
../../src/gcc/cp/parser.c:22631
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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Subject: [Bug c++/89852] [9 Regression] ICE in
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--- Comment #1 from Matthias Klose <doko at debian dot org> ---
Created attachment 46035
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46035&action=edit
preprocessed source
unreduced test case
>From gcc-bugs-return-638658-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 15:09:14 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
Date: Wed, 27 Mar 2019 15:09:00 -0000
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--- Comment #8 from Daniel Vollmer <zerolo at gmail dot com> ---
Using g++-7.4.0 I'm now seeing the following:
- Step 1) (the compilation with "-flto -fprofile-generate") still works,
including the visibility warnings mentioned in Comment #2, in particular
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_FaceBasedMeshPreprocessingArguments.cpp.lto_priv.203'
from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans0.ltrans.o'
to global weak symbol
'__ZGVZNK4flis4Para9ValueNodeIbE11GetNodeTypeB5cxx11EvE1s' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans0.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_CommunicationBuffersBase.cpp.lto_priv.211' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans6.ltrans.o'
to global weak symbol
'__ZGVZN4flis9Threading19BroadcastFromMasterImEEvPT_mE4bufs' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans6.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_GroupNode.cpp.lto_priv.227' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans8.ltrans.o'
to global weak symbol
'__ZGVZNK4flis4Para10ChoiceNodeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE11GetNodeTypeEvE1s'
from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans8.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_DiscriminatedGroupNode.cpp.lto_priv.225' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans8.ltrans.o'
to global weak symbol
'__ZGVZNK4flis4Para10ChoiceNodeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE11GetNodeTypeEvE1s'
from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans8.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_Instantiations.cpp.lto_priv.207' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans15.ltrans.o'
to global weak symbol '__ZGVZNK4flis7Reducer3MinIdEEvPT_mE6shared' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans15.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_DistanceFromSurfaceElement.cpp.lto_priv.241' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans16.ltrans.o'
to global weak symbol
'__ZZN5Eigen8internal20manage_caching_sizesENS_6ActionEPlS2_E13m_l2CacheSize'
from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans4.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_Preprocessor.cpp.lto_priv.239' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans16.ltrans.o'
to global weak symbol
'__ZZN5Eigen8internal20manage_caching_sizesENS_6ActionEPlS2_E13m_l2CacheSize'
from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans4.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_InnermostTimeIntegrationBase.cpp.lto_priv.263' from
file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans19.ltrans.o'
to global weak symbol '__ZGVZNK4flis7Reducer9BitWiseOrImEEvPT_mE6shared' from
file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans19.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_DiscretizationSelectionPara.cpp.lto_priv.249' from
file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans23.ltrans.o'
to global weak symbol
'__ZGVZNK4flis4Para9ValueNodeIiE11GetNodeTypeB5cxx11EvE1s' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans23.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_DiscretizationParaBase.cpp.lto_priv.248' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans23.ltrans.o'
to global weak symbol
'__ZGVZNK4flis4Para9ValueNodeIiE11GetNodeTypeB5cxx11EvE1s' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans23.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_DiscretizationFactory.cpp.lto_priv.247' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans23.ltrans.o'
to global weak symbol
'__ZGVZNK4flis4Para9ValueNodeIiE11GetNodeTypeB5cxx11EvE1s' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans23.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
- Step 2 now no longer hangs, the Python extensions exits successfully and
seems to generate / write profile data. The code executed to generate the
profiles is multi-threaded.
- Step 3 now fails (during "compilation" of the .cpp files) for at least one
file with the following error:
src/LinearSolver/InstantiationJacobi6.cpp: In member function
'flis::IndexedSubset<unsigned
int>::Loop<flucs::BlockMatrix<Eigen::Matrix<double, 6, 6, 0, 6, 6>,
flucs::SparseMatrixIndexMapping<true, unsigned int>
>::MultiplyAdd(flis::ThreadedCommunicationContext&, flis::Reducer const&,
flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int> const&,
double, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int>
const&, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned
int>&) const::{lambda(unsigned
int)#1}>(flucs::BlockMatrix<Eigen::Matrix<double, 6, 6, 0, 6, 6>,
flucs::SparseMatrixIndexMapping<true, unsigned int>
>::MultiplyAdd(flis::ThreadedCommunicationContext&, flis::Reducer const&,
flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int> const&,
double, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int>
const&, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned
int>&) const::{lambda(unsigned int)#1} const&) constvoid':
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
profile data is not flow-consistent
} // end namespace flucs
^
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 8-11 thought to be -12264
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 8-9 thought to be 1624310
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of iterations for basic block 11 thought to be -12264
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 11-1 thought to be -12264
src/LinearSolver/InstantiationJacobi6.cpp: In member function
'flis::IndexedSubset<unsigned
int>::Loop<flucs::LinearSolverJacobi<flucs::BlockMatrix<Eigen::Matrix<double,
6, 6, 0, 6, 6>, flucs::SparseMatrixIndexMapping<true, unsigned int> >
>::Solve(flis::ThreadedCommunicationContext&, flis::Reducer const&, double,
flis::BlockMatrixInterface const&, flis::BlockVectorInterface const&,
flis::BlockVectorInterface&)::{lambda(unsigned
int)#2}>(flucs::LinearSolverJacobi<flucs::BlockMatrix<Eigen::Matrix<double, 6,
6, 0, 6, 6>, flucs::SparseMatrixIndexMapping<true, unsigned int> >
>::Solve(flis::ThreadedCommunicationContext&, flis::Reducer const&, double,
flis::BlockMatrixInterface const&, flis::BlockVectorInterface const&,
flis::BlockVectorInterface&)::{lambda(unsigned int)#2} const&) constvoid':
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
profile data is not flow-consistent
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 8-11 thought to be -11356
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 8-9 thought to be 587466
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of iterations for basic block 11 thought to be -11356
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 11-1 thought to be -11356
src/LinearSolver/InstantiationJacobi6.cpp: In member function
'flucs::BlockMatrix<Eigen::Matrix<double, 6, 6, 0, 6, 6>,
flucs::SparseMatrixIndexMapping<true, unsigned int>
>::MultiplyAdd(flis::ThreadedCommunicationContext&, flis::Reducer const&,
flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int> const&,
double, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int>
const&, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned
int>&) const':
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
profile data is not flow-consistent
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 16-17 thought to be 1075
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 16-18 thought to be -4
src/LinearSolver/InstantiationJacobi6.cpp: In member function
'flucs::BlockMatrix<Eigen::Matrix<double, 6, 6, 0, 6, 6>,
flucs::SparseMatrixIndexMapping<true, unsigned int>
>::MultiplyAdd(flis::ThreadedCommunicationContext&, flis::Reducer const&,
flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int> const&,
double, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int>
const&, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned
int>&) const::{lambda(unsigned int)#1}::operator()(unsigned int) const':
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
profile data is not flow-consistent
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 7-8 thought to be 1530361
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 7-10 thought to be -1462
src/LinearSolver/InstantiationJacobi6.cpp: In member function
'flis::IndexedSubset<unsigned
int>::Loop<flucs::LinearSolverJacobi<flucs::BlockMatrix<Eigen::Matrix<double,
6, 6, 0, 6, 6>, flucs::SparseMatrixIndexMapping<true, unsigned int> >
>::Solve(flis::ThreadedCommunicationContext&, flis::Reducer const&, double,
flis::BlockMatrixInterface const&, flis::BlockVectorInterface const&,
flis::BlockVectorInterface&)::{lambda(unsigned
int)#1}>(flucs::LinearSolverJacobi<flucs::BlockMatrix<Eigen::Matrix<double, 6,
6, 0, 6, 6>, flucs::SparseMatrixIndexMapping<true, unsigned int> >
>::Solve(flis::ThreadedCommunicationContext&, flis::Reducer const&, double,
flis::BlockMatrixInterface const&, flis::BlockVectorInterface const&,
flis::BlockVectorInterface&)::{lambda(unsigned int)#1} const&) constvoid':
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
profile data is not flow-consistent
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 8-11 thought to be -62
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 8-9 thought to be 40120
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of iterations for basic block 11 thought to be -62
src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile info:
number of executions for edge 11-1 thought to be -62
If I disable threading for the Profile generation (Step 2)), then the
compilation in Step 3) seems to succeed, and I get a functioning result.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89852] [9 Regression] ICE: unexpected expression of kind implicit_conv_expr
Date: Wed, 27 Mar 2019 15:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89852
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-27
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|[9 Regression] ICE: |[9 Regression] ICE:
|unexpected expression |unexpected expression of
| |kind implicit_conv_expr
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Unsurprisingly, r268321.
>From gcc-bugs-return-638660-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 15:27:02 2019
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Subject: [Bug c++/89852] [9 Regression] ICE: unexpected expression of kind implicit_conv_expr
Date: Wed, 27 Mar 2019 15:27:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P1
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Subject: [Bug c++/89767] [8 Regression] ICE with tuple and optimization
Date: Wed, 27 Mar 2019 15:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89767
--- Comment #10 from Steven Seeger <klystron25 at gmail dot com> ---
I can confirm that this fix corrects the issue that I've seen with gcc-3.0. I
built Gentoo's sys-devel/gcc-8.3.0 with Jakub's patch as a user patch and it
built clean, and I was able to build my codebase.
I ran my tests on the built library and they worked.
Thanks Jakub.
>From gcc-bugs-return-638662-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 15:32:20 2019
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
Date: Wed, 27 Mar 2019 15:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89830
--- Comment #8 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Mar 27, 2019 at 02:55:56PM +0000, dominiq at lps dot ens.fr wrote:
>
> AFAIU this PR reports two issues with no or little connection with REPEAT.
>
Yes, and we have already agreed to close this one because (1)
was a pilot error and create a new PR for (2).
> (2) The reference to the source in run time errors:
>
> subroutine foo(s,n)
> implicit none
> character(len=1), intent(in) :: s
> integer, intent(in) :: n
> write(*,*) repeat(s,n)
> end subroutine
>
> call foo('a', -1)
> end
>
> which gives
>
> % gfc pr89830_2_db.f90
> % ./a.out
> At line 5 of file pr89830_2_db.f90
> Fortran runtime error: Argument NCOPIES of REPEAT intrinsic is negative (its
> value is -1)
> % gfc ../bug/pr89830_2_db.f90
> % ./a.out
> At line 5 of file ../bug/pr89830_2_db.f90
> Fortran runtime error: Argument NCOPIES of REPEAT intrinsic is negative (its
> value is -1)
> i.e., the path to the file given to the compiler. AFAICT this is
> generic to all run time error pointing to a source file (mostly I/O errors).
>
>>From comment 5, the reporter's expectation is not clear for me.
>> IMO this should be solved at the build script level rather that
>> with yet another option.
The issue is quite clear. Zaak wants to allow users to build OpenCoarrays
in whatever directory hierarchy the user can imagine, and end up with a
final OC library that is repeatable. He wants to strip the path from the
filename. This may be useful for invariant SHA256 or MD5 checksums if
one distributes a compiled project.
I think that stripping the path would be a lose of information for
someone that may need to debug a problem. If one has multiple files
with the same name, but of course in different directories, then
one needs to guess which file is the root of the problem.
>From gcc-bugs-return-638663-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 15:42:36 2019
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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89853] New: Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Wed, 27 Mar 2019 15:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89853
Bug ID: 89853
Summary: Regression of 525.x264_r at -O2 (and generic tuning)
on AMD EPYC
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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I have detected a 7% regression of 525.x264_r from SPEC INTrate 2017
at -O2 and generic march/tuning on AMD EPYC (znver1) CPUs (I have not seen
it on an Intel CPU), compared to the gcc-8-branch.
I have bisected it to r264897.
With revision 264896 I get:
perf stat:
Performance counter stats for 'numactl -C 0 -l specinvoke':
495413.105450 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
80572 page-faults:u # 0.163 K/sec
1573525941814 cycles:u # 3.176 GHz
(83.33%)
56730573392 stalled-cycles-frontend:u # 3.61% frontend cycles
idle (83.33%)
397644125819 stalled-cycles-backend:u # 25.27% backend cycles
idle (83.33%)
5157395976259 instructions:u # 3.28 insn per cycle
# 0.08 stalled cycles
per insn (83.33%)
421019689027 branches:u # 849.836 M/sec
(83.33%)
10705813341 branch-misses:u # 2.54% of all branches
(83.33%)
495.869208013 seconds time elapsed
perf report -n --percent-limit 2
# Event count (approx.): 1576108148398
#
# Overhead Samples Command Shared Object Symbol
# ........ ......... ........... ..............
............................
#
14.20% 282290 x264_r_base x264_r_base.mi [.] x264_pixel_satd_8x4
11.19% 222403 x264_r_base x264_r_base.mi [.] get_ref
10.82% 215061 x264_r_base x264_r_base.mi [.]
x264_pixel_sad_x4_16x16
7.00% 139082 x264_r_base x264_r_base.mi [.] x264_pixel_sad_16x16
6.11% 121470 x264_r_base x264_r_base.mi [.]
x264_pixel_sad_x3_16x16
5.89% 116939 x264_r_base x264_r_base.mi [.]
x264_pixel_sad_x4_8x8
5.09% 101266 x264_r_base x264_r_base.mi [.] quant_4x4
4.10% 81471 x264_r_base x264_r_base.mi [.] mc_chroma
2.47% 49122 x264_r_base x264_r_base.mi [.]
x264_pixel_sad_x3_8x8
2.21% 43928 x264_r_base x264_r_base.mi [.] sub4x4_dct
2.14% 42598 x264_r_base x264_r_base.mi [.] pixel_hadamard_ac
With revision 264897 I get:
perf stat
Performance counter stats for 'numactl -C 0 -l specinvoke':
495413.105450 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
80572 page-faults:u # 0.163 K/sec
1573525941814 cycles:u # 3.176 GHz
(83.33%)
56730573392 stalled-cycles-frontend:u # 3.61% frontend cycles
idle (83.33%)
397644125819 stalled-cycles-backend:u # 25.27% backend cycles
idle (83.33%)
5157395976259 instructions:u # 3.28 insn per cycle
# 0.08 stalled cycles
per insn (83.33%)
421019689027 branches:u # 849.836 M/sec
(83.33%)
10705813341 branch-misses:u # 2.54% of all branches
(83.33%)
495.869208013 seconds time elapsed
perf report -n --percent-limit 2
# Event count (approx.): 1576108148398
#
# Overhead Samples Command Shared Object
Symbol
# ........ ............ ............... ............................
.................................................
#
14.20% 282290 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_satd_8x4
11.19% 222403 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
get_ref
10.82% 215061 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x4_16x16
7.00% 139082 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_16x16
6.11% 121470 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x3_16x16
5.89% 116939 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x4_8x8
5.09% 101266 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
quant_4x4
4.10% 81471 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
mc_chroma
2.47% 49122 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x3_8x8
2.21% 43928 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
sub4x4_dct
2.14% 42598 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
pixel_hadamard_ac
>From gcc-bugs-return-638664-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:03:12 2019
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Subject: [Bug c++/89854] New: diagnostic differences between misuse of "." and "->"
Date: Wed, 27 Mar 2019 16:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89854
Bug ID: 89854
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I'm using the system gcc on Fedora 29:
gcc (GCC) 8.2.1 20180801 (Red Hat 8.2.1-2)
Consider this source:
struct s {
int f;
};
int x(struct s s) {
return s->f;
}
int x(struct s *s) {
return s.f;
}
Compiling it with g++:
murgatroyd. g++ --syntax-only b.cc
b.cc: In function ‘int x(s)’:
b.cc:6:11: error: base operand of ‘->’ has non-pointer type ‘s’
return s->f;
^~
b.cc: In function ‘int x(s*)’:
b.cc:10:12: error: request for member ‘f’ in ‘s’, which is of pointer type ‘s*’
(maybe you meant to use ‘->’ ?)
return s.f;
^
Notice that the "->" message underlines the operator (which seems best
to me), whereas the "." message underlines the member.
Also notice that the "." message suggests using "->" (which seems best
to me), whereas the "->" message does not.
Finally, it seems to me that both of these could provide fixits.
>From gcc-bugs-return-638665-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:10:45 2019
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Subject: [Bug c++/89850] long compile times with -fsanitize=undefined and -Wduplicated-branches
Date: Wed, 27 Mar 2019 16:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89850
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Guess that is because
/* Compare the hashes. */
if (h0 == h1
&& operand_equal_p (thenb, elseb, OEP_LEXICOGRAPHIC)
/* Don't warn if any of the branches or their subexpressions comes
from a macro. */
&& !walk_tree_without_duplicates (&thenb, expr_from_macro_expansion_r,
NULL)
&& !walk_tree_without_duplicates (&elseb, expr_from_macro_expansion_r,
NULL))
warning_at (EXPR_LOCATION (expr), OPT_Wduplicated_branches,
"this condition has identical branches");
calls operand_equal_p with OEP_LEXICOGRAPHIC and that doesn't handle SAVE_EXPRs
occuring more than once and nested inside of each other very well.
case SAVE_EXPR:
if (flags & OEP_LEXICOGRAPHIC)
return OP_SAME (0);
return 0;
There is also a problem already before, when computing the hash, as
inchash::add_expr doesn't special-case SAVE_EXPR at all.
Now, to fix this properly we'd need to create some hash_map from the SAVE_EXPRs
to their hash values and merge in that hash value each time we see it, instead
of computing it again. And similarly for operand_equal_p, noting we've
compared this SAVE_EXPR with that SAVE_EXPR successfully already once with
OEP_LEXICOGRAPHIC and so that comparison pair is ok even in all following cases
(at least with the same flags). But unfortunately there is no
inchash::add_expr or operand_equal_p context where we could stick such a
hash_map, unless it would be a global variable and we'd say required that if
OEP_LEXICOGRAPHIC is used, then the caller must set the hash_map global var and
release it at the end or something similar.
>From gcc-bugs-return-638667-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:13:49 2019
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Subject: [Bug c++/89850] long compile times with -fsanitize=undefined and -Wduplicated-branches
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Dup of 82952?
>From gcc-bugs-return-638666-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:13:08 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
Date: Wed, 27 Mar 2019 16:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68771
--- Comment #9 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #8)
> Using g++-7.4.0 I'm now seeing the following:
> - Step 1) (the compilation with "-flto -fprofile-generate") still works,
So - to be sure - this is LTO without "-g"?
(we should expect LTO to work in general, without the debug scenario)
> including the visibility warnings mentioned in Comment #2, in particular
>
> ld: warning: direct access in function
> '__GLOBAL__sub_I_65535_0_FaceBasedMeshPreprocessingArguments.cpp.lto_priv.
> 203' from file
> '/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans0.ltrans.
> o' to global weak symbol
> '__ZGVZNK4flis4Para9ValueNodeIbE11GetNodeTypeB5cxx11EvE1s' from file
> '/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccf8A4Wl.ltrans0.ltrans.
> o' means the weak symbol cannot be overridden at runtime. This was likely
> caused by different translation units being compiled with different
> visibility settings.
There are some cases where ld64 *thinks* that direct access to A from B
represents the problem it describes, but in fact the pathway isn't reachable
independently.
So, what we need is to determine that the CTOR mentioned cannot be invoked
independently of selecting the impl. represented by
__ZGVZNK4flis4Para9ValueNodeIbE11GetNodeTypeB5cxx11EvE1s.
What would be useful here is one case to review - as .s file (likely the
remainder repeat this circumstance).
> - Step 2 now no longer hangs, the Python extensions exits successfully and
> seems to generate / write profile data. The code executed to generate the
> profiles is multi-threaded.
> - Step 3 now fails (during "compilation" of the .cpp files) for at least one
> file with the following error:
So the 'symbol redefinition
___cold_sect_of_ComputeBoundingBox:
"
fails are gone, as expected.
> src/LinearSolver/InstantiationJacobi6.cpp: In member function
> 'flis::IndexedSubset<unsigned
> int>::Loop<flucs::BlockMatrix<Eigen::Matrix<double, 6, 6, 0, 6, 6>,
> flucs::SparseMatrixIndexMapping<true, unsigned int>
> >::MultiplyAdd(flis::ThreadedCommunicationContext&, flis::Reducer const&,
> flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int>
> const&, double, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>,
> unsigned int> const&, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6,
> 1>, unsigned int>&) const::{lambda(unsigned
> int)#1}>(flucs::BlockMatrix<Eigen::Matrix<double, 6, 6, 0, 6, 6>,
> flucs::SparseMatrixIndexMapping<true, unsigned int>
> >::MultiplyAdd(flis::ThreadedCommunicationContext&, flis::Reducer const&,
> flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>, unsigned int>
> const&, double, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6, 1>,
> unsigned int> const&, flucs::BlockVector<Eigen::Matrix<double, 6, 1, 0, 6,
> 1>, unsigned int>&) const::{lambda(unsigned int)#1} const&) constvoid':
> src/LinearSolver/InstantiationJacobi6.cpp:21:1: error: corrupted profile
> info: profile data is not flow-consistent
> If I disable threading for the Profile generation (Step 2)), then the
> compilation in Step 3) seems to succeed, and I get a functioning result.
OK - so this is a new problem now, that we seem to have some issue with profile
generation in a multithreaded scenario.
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Subject: [Bug c++/82952] Hang compiling with g++ -fsanitize=undefined -Wduplicated-branches
Date: Wed, 27 Mar 2019 16:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |joerg.richter@pdv-fs.de
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89850 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638668-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:16:30 2019
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Subject: [Bug c++/89850] long compile times with -fsanitize=undefined and -Wduplicated-branches
Date: Wed, 27 Mar 2019 16:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes.
*** This bug has been marked as a duplicate of bug 82952 ***
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Wed, 27 Mar 2019 16:18:00 -0000
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--- Comment #20 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Mar 27 16:18:06 2019
New Revision: 269967
URL: https://gcc.gnu.org/viewcvs?rev=269967&root=gcc&view=rev
Log:
PR rtl-optimization/87761
PR rtl-optimization/89826
* regcprop.c (copyprop_hardreg_forward_1): Move may_trap_p test
slightly later.
(pass_cprop_hardreg::execute): Call df_analyze after adding the
note problem to get REG_DEAD/REG_UNUSED notes updated.
PR rtl-optimization/87761
PR rtl-optimization/89826
* gcc.c-torture/execute/pr89826.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr89826.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regcprop.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89826] [9 Regression] wrong code at -O1
Date: Wed, 27 Mar 2019 16:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89826
--- Comment #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Mar 27 16:18:06 2019
New Revision: 269967
URL: https://gcc.gnu.org/viewcvs?rev=269967&root=gcc&view=rev
Log:
PR rtl-optimization/87761
PR rtl-optimization/89826
* regcprop.c (copyprop_hardreg_forward_1): Move may_trap_p test
slightly later.
(pass_cprop_hardreg::execute): Call df_analyze after adding the
note problem to get REG_DEAD/REG_UNUSED notes updated.
PR rtl-optimization/87761
PR rtl-optimization/89826
* gcc.c-torture/execute/pr89826.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr89826.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regcprop.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638672-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:21:06 2019
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Subject: [Bug c++/89854] diagnostic differences between misuse of "." and "->"
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
Ever confirmed|0 |1
>From gcc-bugs-return-638673-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:21:38 2019
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Subject: [Bug rtl-optimization/89826] [9 Regression] wrong code at -O1
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on the trunk.
>From gcc-bugs-return-638674-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:29:02 2019
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Subject: [Bug rtl-optimization/86525] [missed-optimization] extraneous instruction emitted in switch converted to look-uptable load
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Nikita Kniazev <nok.raven at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nok.raven at gmail dot com
--- Comment #2 from Nikita Kniazev <nok.raven at gmail dot com> ---
For the code above Clang produces:
f(xx):
leal (,%rdi,8), %ecx
addb $-8, %cl
movabsq $9925787320834, %rax
shrq %cl, %rax
retq
>From gcc-bugs-return-638675-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:33:24 2019
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From: "foom at fuhm dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89855] New: Inconsistent global namespace overload sets from #include <cmath>
Date: Wed, 27 Mar 2019 16:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89855
Bug ID: 89855
Summary: Inconsistent global namespace overload sets from
#include <cmath>
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: foom at fuhm dot net
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In the following, I use the function "log" as an example, but this applies to
effectively everything in cmath, and ::abs in cstdlib.
The C standard library <math.h> defines:
double log(double);
libstdc++ <cmath> includes libc <math.h>, and then does:
namespace std {
using ::log;
float log(float);
long double log(long double);
double log(Any-Integral-Type);
}
libstdc++ <math.h> does:
#include <cmath>
using std::log;
This has the unfortunate effect that code which includes <cmath> and uses
global ::log ends up accidentally calling the double overload of log. E.g., a
program like this:
#include <cmath>
float foo(float f) { return log(f); }
Granted, the above code is non-portable, and may not even compile on some other
standards-conforming implementation. I do not believe this is a
standards-compliance issue in libstdc++ -- the header <cstdlib> is permitted,
but not required to define ::log.
However, IMO, it's a *QoI* bug that libstdc++ doesn't provide consistent
overload sets. The problem is that the behavior of the above code _very subtly_
changes upon adding or removing an #include which transitively has an "#include
<math.h>" in it. This can cause extremely surprising bugs.
I'd suggest that either #include <cmath> ought to define NO global ::log
function at all (thus, the above program fails to compile), or it should define
the entire overload set for ::log. No partial overload sets.
Since not defining ::log from cmath is effectively impossible, given the
current interfaces between libc and libstdc++, I think the latter is what
should be done. Concretely, that simply means moving all of the global
namespace "using std::log" (etc.) statements from libstdc++'s <math.h> into
libstdc++'s <cmath>.
(I would also suggest that it'd be reasonable for a future C++ standard to
require that. E.g., it could say something like: While <math.h> may or may not
declare functions in ::std::, and <cmath> may or may not declare functions in
::, if they _do_ declare any such name, they must define the complete set of
required overloads, not a subset.)
>From gcc-bugs-return-638676-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:34:44 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
Date: Wed, 27 Mar 2019 16:34:00 -0000
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--- Comment #10 from Daniel Vollmer <zerolo at gmail dot com> ---
Created attachment 46036
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46036&action=edit
Example triggering "This was likely caused by different translation units being
compiled with different visibility settings."
Generates (w/ g++-7.4 on Darwin)
ld: warning: direct access in function '__GLOBAL__sub_I_65535_0_test.cpp' from
file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccuYv6qu.ltrans0.ltrans.o'
to global weak symbol '__ZGVZ19BroadcastFromMasterImEvPT_mE4bufs' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccuYv6qu.ltrans0.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
>From gcc-bugs-return-638677-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:36:55 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
Date: Wed, 27 Mar 2019 16:36:00 -0000
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--- Comment #11 from Daniel Vollmer <zerolo at gmail dot com> ---
(In reply to Iain Sandoe from comment #9)
> (In reply to Daniel Vollmer from comment #8)
> > Using g++-7.4.0 I'm now seeing the following:
> > - Step 1) (the compilation with "-flto -fprofile-generate") still works,
>
> So - to be sure - this is LTO without "-g"?
> (we should expect LTO to work in general, without the debug scenario)
Yes, all this is without "-g".
>From gcc-bugs-return-638679-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:59:51 2019
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Wed, 27 Mar 2019 16:59:00 -0000
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--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Wed Mar 27 16:59:15 2019
New Revision: 269969
URL: https://gcc.gnu.org/viewcvs?rev=269969&root=gcc&view=rev
Log:
gcc/
PR rtl-optimization/89313
* function.c (matching_constraint_num): New static function.
(match_asm_constraints_1): Use it. Fixup white space and comment.
Don't replace inputs with non-matching constraints which conflict
with early clobber outputs.
gcc/testsuite/
PR rtl-optimization/89313
* gcc.dg/pr89313.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89313.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/function.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638678-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 16:59:50 2019
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
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--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Rather than create a new compiler option, it is possible to compile to an
assembler
file using -S, look for .ascii „bar/foo.f90\0“ and replace with a sed or perl
script
according to your specification (for example .ascii „foo.f90\0“ and then use
the
gfortran driver to convert this into foo.o.
Advantage: You can do this with any gfortran version.
>From gcc-bugs-return-638680-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:03:28 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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--- Comment #12 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #10)
> Created attachment 46036 [details]
> Example triggering "This was likely caused by different translation units
> being compiled with different visibility settings."
>
> Generates (w/ g++-7.4 on Darwin)
>
> ld: warning: direct access in function '__GLOBAL__sub_I_65535_0_test.cpp'
> from file
> '/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccuYv6qu.ltrans0.ltrans.
> o' to global weak symbol '__ZGVZ19BroadcastFromMasterImEvPT_mE4bufs' from
> file
> '/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccuYv6qu.ltrans0.ltrans.
> o' means the weak symbol cannot be overridden at runtime. This was likely
> caused by different translation units being compiled with different
> visibility settings.
Thanks, I can reproduce this with my local gcc-7 branch,
interesting that it needs both -Ofast and -fprofile-generate to fire.
>From gcc-bugs-return-638681-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:04:22 2019
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-638682-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:13:35 2019
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Subject: [Bug fortran/78377] [cleanup] gfc_get_tbp_symtree vs. gfc_get_sym_tree
Date: Wed, 27 Mar 2019 17:13:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #1)
> This kind of PRs is a nightmare when sorting the bug list.
What do you mean by "this kind of PR"? And what is your problem with it? Do you
have a better idea on how to track such issues?
>From gcc-bugs-return-638683-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:23:07 2019
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Subject: [Bug fortran/78377] [cleanup] gfc_get_tbp_symtree vs. gfc_get_sym_tree
Date: Wed, 27 Mar 2019 17:23:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> What do you mean by "this kind of PR"?
The [cleanup] ones.
> And what is your problem with it?
They rot forever until there are enough changes to make them invalid.
Meanwhile they clutter the bug list.
> Do you have a better idea on how to track such issues?
IMO it would be better to add TODO comments in the sources, thus maintainers
looking in the area will be aware of the problem without having to remember the
PR.
>From gcc-bugs-return-638684-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:25:46 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89855] Inconsistent global namespace overload sets from #include <cmath>
Date: Wed, 27 Mar 2019 17:25:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I there is a related defect report against the c++ standard about this exact
issue.
>From gcc-bugs-return-638685-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:29:00 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Wed, 27 Mar 2019 17:28:00 -0000
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--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Cut and paste error? The two data sets look the same to me...or am I missing
something?
>From gcc-bugs-return-638686-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:31:07 2019
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Subject: [Bug regression/89733] [7/8/9 Regression] False positive -Wuninitialized in C++14+ mode
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Subject: [Bug target/89400] [7/8/9 Regression] ICE: output_operand: invalid %-code with -march=armv6kz -mthumb -munaligned-access
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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Subject: [Bug tree-optimization/89499] [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
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Subject: [Bug target/89399] [7/8/9 Regression] ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783
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Subject: [Bug rtl-optimization/87716] [9 Regression] FAIL: gcc.target/i386/pr57193.c scan-assembler-times movdqa 2
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Subject: [Bug tree-optimization/84053] [7/8/9 Regression] missing -Warray-bounds accessing a local array across inlined function boundaries
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-638694-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:48:49 2019
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
Date: Wed, 27 Mar 2019 17:48:00 -0000
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--- Comment #13 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #12)
> (In reply to Daniel Vollmer from comment #10)
> > Created attachment 46036 [details]
> > Example triggering "This was likely caused by different translation units
> > being compiled with different visibility settings."
> >
> > Generates (w/ g++-7.4 on Darwin)
> >
> > ld: warning: direct access in function '__GLOBAL__sub_I_65535_0_test.cpp'
> > from file
> > '/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccuYv6qu.ltrans0.ltrans.
> > o' to global weak symbol '__ZGVZ19BroadcastFromMasterImEvPT_mE4bufs' from
> > file
> > '/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccuYv6qu.ltrans0.ltrans.
> > o' means the weak symbol cannot be overridden at runtime. This was likely
> > caused by different translation units being compiled with different
> > visibility settings.
>
> Thanks, I can reproduce this with my local gcc-7 branch,
> interesting that it needs both -Ofast and -fprofile-generate to fire.
OK (initial analysis). what we have is
__ZGVZ19BroadcastFromMasterImEvPT_mE4bufs:
.space 8
....
LPX0:
....
and then a reference to LPX0 in __GLOBAL__sub_I_65535_0_test.cpp.
So ld64 breaks the code and data into "atoms" where each atom begins with a
linker-visible symbol.
What it's saying is that the data pointed to by LPX0 is in the atom named
__ZGVZ19BroadcastFromMasterImEvPT_mE4bufs (because LPX0 is not visible to the
linker).
right now, not sure if it's really a potential issue or just more linker
warning noise - need to look at it fresh with plenty of coffee. FWIW, Linux
generates pretty much identical code, but (of course) the BFD linker has
different behaviour from Darwin's ld64.
=====
So, we now have two different issues, neither of which is related to the
current bug title :)
Please pick one - and make a new PR for the second (probably ^^^^ this stuff is
quite self-contained and could be split out) ... we can then retitle the
existing bug to make it easier for folks to find things.
>From gcc-bugs-return-638695-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 17:53:40 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Wed, 27 Mar 2019 17:53:00 -0000
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--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Doh, yes, copy-paste error, sorry. The data should have been:
FAST:
Performance counter stats for 'numactl -C 0 -l specinvoke':
495413.105450 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
80572 page-faults:u # 0.163 K/sec
1573525941814 cycles:u # 3.176 GHz
(83.33%)
56730573392 stalled-cycles-frontend:u # 3.61% frontend cycles
idle (83.33%)
397644125819 stalled-cycles-backend:u # 25.27% backend cycles
idle (83.33%)
5157395976259 instructions:u # 3.28 insn per cycle
# 0.08 stalled cycles per
insn (83.33%)
421019689027 branches:u # 849.836 M/sec
(83.33%)
10705813341 branch-misses:u # 2.54% of all branches
(83.33%)
495.869208013 seconds time elapsed
# Event count (approx.): 1576108148398
#
# Overhead Samples Command Shared Object Symbol
# ........ ............ ............... ............................
.................................................
#
14.20% 282290 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_satd_8x4
11.19% 222403 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
get_ref
10.82% 215061 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x4_16x16
7.00% 139082 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_16x16
6.11% 121470 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x3_16x16
5.89% 116939 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x4_8x8
5.09% 101266 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
quant_4x4
4.10% 81471 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
mc_chroma
2.47% 49122 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x3_8x8
2.21% 43928 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
sub4x4_dct
2.14% 42598 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
pixel_hadamard_ac
SLOW:
Performance counter stats for 'numactl -C 0 -l specinvoke':
526858.531112 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
81064 page-faults:u # 0.154 K/sec
1673634535742 cycles:u # 3.177 GHz
(83.33%)
64458929239 stalled-cycles-frontend:u # 3.85% frontend cycles
idle (83.33%)
397586117982 stalled-cycles-backend:u # 23.76% backend cycles
idle (83.33%)
5157346862311 instructions:u # 3.08 insn per cycle
# 0.08 stalled cycles per
insn (83.33%)
421082988475 branches:u # 799.234 M/sec
(83.33%)
14226205709 branch-misses:u # 3.38% of all branches
(83.33%)
527.353829377 seconds time elapsed
# Samples: 2M of event 'cycles'
# Event count (approx.): 1675655436335
#
# Overhead Samples Command Shared Object
Symbol
# ........ ............ ............... ............................
.................................................
#
14.13% 298519 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x4_16x16
13.43% 283793 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_satd_8x4
11.56% 244196 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
get_ref
7.17% 151589 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x3_16x16
6.29% 132936 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_16x16
5.28% 111517 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x4_8x8
4.84% 102317 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
quant_4x4
3.86% 81563 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
mc_chroma
2.57% 54233 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
x264_pixel_sad_x3_8x8
2.08% 43964 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
sub4x4_dct
2.01% 42520 x264_r_base.min x264_r_base.mine-gen-std-m64 [.]
pixel_hadamard_ac
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Subject: [Bug c++/89833] [9 Regression] sorry, unimplemented: string literal in function template signature
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Subject: [Bug target/89557] [7/8/9 regression] 4*movq to 2*movaps IPC performance regression on znver1 with -Og
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-638698-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:04:50 2019
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Subject: [Bug target/89835] The RISC-V target uses amoswap.w for relaxed stores
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--- Comment #2 from Jim Wilson <wilson at gcc dot gnu.org> ---
The RISC-V atomic support in gcc needs a major rewrite. We don't support the
RISC-V formal memory model yet, and we don't support inline sub-word atomic
operations yet. Meanwhile, you shouldn't expect anything to be optimized until
this can be fixed. Fixing all of this stuff will be a major project, and it
isn't clear when anyone will have time to do it.
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Summary|[9 Regression] Misleading |Misleading
|-Werror=array-bounds error |-Werror=array-bounds error
--- Comment #22 from Jeffrey A. Law <law at redhat dot com> ---
Martin cleaned up the warning message and I'm considering that as fixing the
regression. Thus regression marker removed.
I doubt everyone is in agreement on the overall "should we warn or not"
question. So I'm keeping the BZ open. I wouldn't be at all surprised if there
is no consensus possible WRT whether or not we should be warning. Which
usually leads to a flag to enable/disable the particular behavior ;(
>From gcc-bugs-return-638700-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:08:49 2019
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Subject: [Bug other/89856] New: `ld: warning: direct access to global weak symbol means the weak symbol cannot be overridden at runtime` using LTO with optimization and -fprofile-generate
Date: Wed, 27 Mar 2019 18:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89856
Bug ID: 89856
Summary: `ld: warning: direct access to global weak symbol
means the weak symbol cannot be overridden at runtime`
using LTO with optimization and -fprofile-generate
Product: gcc
Version: 7.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: zerolo at gmail dot com
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Created attachment 46037
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46037&action=edit
Example triggering "This was likely caused by different translation units being
compiled with different visibility settings"
(Split off from #68771, and I'm also not sure which component to attach this
to)
Compiling the attached example with
g++-7 -shared -O1 -flto -fprofile-generate test.cpp -o test.dylib
causes the following warning:
ld: warning: direct access in function '__GLOBAL__sub_I_65535_0_test.cpp' from
file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccaTTZJD.ltrans0.ltrans.o'
to global weak symbol '__ZGVZ19BroadcastFromMasterImEvPT_mE4bufs' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccaTTZJD.ltrans0.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
Whether this warning is accurate or not, what consequences it has, or whether
something that leads to this warning is off, is unclear.
Removing any of the options (either disabling optimization, or removing either
-flto or lfprofile-generate) makes the warning go away.
This is on Darwin (but according to Iain Sandoe also happens on Linux).
>From gcc-bugs-return-638701-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:09:15 2019
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Subject: [Bug libstdc++/89855] Inconsistent global namespace overload sets from #include <cmath>
Date: Wed, 27 Mar 2019 18:09:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The same problem exists for ::div in <cstdlib>, and for ::abs in both <cmath>
and <cstdlib>. Calling ::abs(INT_MAX + 1LL) or abs(INT_MAX + 1LL) will overflow
and so is undefined.
Clang warns about this and suggests using std::abs instead:
abs.cc:5:10: warning: absolute value function 'abs' given an argument of type
'long' but has parameter of type 'int' which may cause truncation of value
[-Wabsolute-value]
return ::abs(long(argc) << 32);
^
abs.cc:5:10: note: use function 'std::abs' instead
return ::abs(long(argc) << 32);
^~~~~
std::abs
It doesn't warn for the log(f) example above though.
(In reply to Andrew Pinski from comment #1)
> I there is a related defect report against the c++ standard about this exact
> issue.
I don't think there is.
Only regarding abs, which used to be defined differently in two different
headers. That was changed by:
https://cplusplus.github.io/LWG/issue2294
and
https://cplusplus.github.io/LWG/issue2192
(And it had previously been touched on by
https://cplusplus.github.io/LWG/issue323 which was closed as NAD).
I don't recall an issue about the more general problem of functions other than
abs.
>From gcc-bugs-return-638702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:10:36 2019
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Subject: [Bug other/89856] `ld: warning: direct access to global weak symbol means the weak symbol cannot be overridden at runtime` using LTO with optimization and -fprofile-generate
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--- Comment #1 from Daniel Vollmer <zerolo at gmail dot com> ---
Initial analysis from Iain Sandoe
> OK (initial analysis). what we have is
>
> __ZGVZ19BroadcastFromMasterImEvPT_mE4bufs:
> .space 8
> ....
>
> LPX0:
> ....
>
> and then a reference to LPX0 in __GLOBAL__sub_I_65535_0_test.cpp.
>
> So ld64 breaks the code and data into "atoms" where each atom begins with a
> linker-visible symbol.
>
> What it's saying is that the data pointed to by LPX0 is in the atom named
> __ZGVZ19BroadcastFromMasterImEvPT_mE4bufs (because LPX0 is not visible to
> the linker).
>
> right now, not sure if it's really a potential issue or just more linker
> warning noise - need to look at it fresh with plenty of coffee. FWIW, Linux
> generates pretty much identical code, but (of course) the BFD linker has
> different behaviour from Darwin's ld64.
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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--- Comment #14 from Daniel Vollmer <zerolo at gmail dot com> ---
(In reply to Iain Sandoe from comment #13)
> Please pick one - and make a new PR for the second (probably ^^^^ this stuff
> is quite self-contained and could be split out) ... we can then retitle the
> existing bug to make it easier for folks to find things.
Done as https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89856
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Subject: [Bug middle-end/87489] [8/9 Regression] Spurious -Wnonnull warning
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
Priority|P3 |P2
CC| |law at redhat dot com
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Subject: [Bug other/89856] `ld: warning: direct access to global weak symbol means the weak symbol cannot be overridden at runtime` using LTO with optimization and -fprofile-generate
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Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |*-*-darwin*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
CC| |iains at gcc dot gnu.org
Target Milestone|--- |7.5
Ever confirmed|0 |1
Known to fail| |7.4.1, 8.3.1
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-638708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:24:04 2019
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Subject: [Bug target/86753] [9 Regression] gcc.target/aarch64/sve/vcond_[45].c fail after recent combine patch
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-638709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:34:34 2019
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Subject: [Bug c++/89857] New: list-initialization of unnamed, non-const reference type
Date: Wed, 27 Mar 2019 18:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89857
Bug ID: 89857
Summary: list-initialization of unnamed, non-const reference
type
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: leni536 at gmail dot com
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gcc doesn't compile the following well-formed program:
void foo () {
using T = int&;
int i{};
T{i};
}
$ g++ -std=c++17 -c gcc_bug2.cpp
gcc_bug2.cpp: In function ‘void foo()’:
gcc_bug2.cpp:4:8: error: invalid cast of an rvalue expression of type ‘int’ to
type ‘T’ {aka ‘int&’}
T{i};
Quoting from the standard draft:
http://eel.is/c++draft/dcl.init.list#3.9
Otherwise, if the initializer list has a single element of type E and either T
is not a reference type or its referenced type is reference-related to E, the
object or reference is initialized from that element (by copy-initialization
for copy-list-initialization, or by direct-initialization for
direct-list-initialization); if a narrowing conversion (see below) is required
to convert the element to T, the program is ill-formed.
According to the error, it looks like gcc skips this and tries to apply the
next rule:
Otherwise, if T is a reference type, a prvalue of the type referenced by T is
generated.
The prvalue initializes its result object by copy-list-initialization.
The prvalue is then used to direct-initialize the reference.
[ Note: As usual, the binding will fail and the program is ill-formed if the
reference type is an lvalue reference to a non-const type.
— end note ]
Note: The current behavior was originally a defect in the C++11 standard that
was corrected in CWG1288.
http://open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#1288
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Subject: [Bug libstdc++/89855] Inconsistent global namespace overload sets from #include <cmath>
Date: Wed, 27 Mar 2019 18:34:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Libc++ avoids the problem by adding the additional overloads to the global
namespace in the C++ versions of <math.h> and <stdlib.h>, then having the
<cxxx> headers include the <xxx.h> headers.
We do it the other way around, so that the original libc function is in the
global namespace, and the additional overloads are in namespace std, and that
difference is the root cause.
>From gcc-bugs-return-638711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:35:23 2019
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Subject: [Bug fortran/77504] [7/8/9 Regression] "is used uninitialized" with allocatable string and array constructors
Date: Wed, 27 Mar 2019 18:35:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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CC| |law at redhat dot com
--- Comment #15 from Jeffrey A. Law <law at redhat dot com> ---
Based on c#14 this seems most likely like a Fortran FE issue, right?
>From gcc-bugs-return-638712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:36:23 2019
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Subject: [Bug c++/89857] list-initialization of unnamed, non-const reference type
Date: Wed, 27 Mar 2019 18:36:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 77875 ***
>From gcc-bugs-return-638713-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:36:23 2019
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Subject: [Bug c++/77875] C++ core issue 1288
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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CC| |leni536 at gmail dot com
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89857 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:37:01 2019
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Subject: [Bug c++/77875] C++ core issue 1288
Date: Wed, 27 Mar 2019 18:37:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
From PR 89857:
gcc doesn't compile the following well-formed program:
void foo () {
using T = int&;
int i{};
T{i};
}
$ g++ -std=c++17 -c gcc_bug2.cpp
gcc_bug2.cpp: In function ‘void foo()’:
gcc_bug2.cpp:4:8: error: invalid cast of an rvalue expression of type ‘int’ to
type ‘T’ {aka ‘int&’}
T{i};
Quoting from the standard draft:
http://eel.is/c++draft/dcl.init.list#3.9
Otherwise, if the initializer list has a single element of type E and either T
is not a reference type or its referenced type is reference-related to E, the
object or reference is initialized from that element (by copy-initialization
for copy-list-initialization, or by direct-initialization for
direct-list-initialization); if a narrowing conversion (see below) is required
to convert the element to T, the program is ill-formed.
According to the error, it looks like gcc skips this and tries to apply the
next rule:
Otherwise, if T is a reference type, a prvalue of the type referenced by T is
generated.
The prvalue initializes its result object by copy-list-initialization.
The prvalue is then used to direct-initialize the reference.
[ Note: As usual, the binding will fail and the program is ill-formed if the
reference type is an lvalue reference to a non-const type.
— end note ]
Note: The current behavior was originally a defect in the C++11 standard that
was corrected in CWG1288.
http://open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#1288
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Subject: [Bug libstdc++/89855] Inconsistent global namespace overload sets from #include <cmath>
Date: Wed, 27 Mar 2019 18:38:00 -0000
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
DR 456: PR6257
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
Date: Wed, 27 Mar 2019 18:39:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Mar 27 18:39:20 2019
New Revision: 269972
URL: https://gcc.gnu.org/viewcvs?rev=269972&root=gcc&view=rev
Log:
PR c++/89241 - ICE with lambda in template parameter list.
We were getting confused by a lambda in template definition context that
isn't actually in the scope of any templated entity. Fixed by telling
type_dependent_expression_p that such a lambda is type-dependent even if we
can't tell that from its closure type. I've also restored the error for
defining a non-lambda class in a default template argument, and for a lambda
befor C++20.
* parser.c (cp_parser_lambda_expression): Also reject a lambda in a
template parameter list before C++20.
* pt.c (type_dependent_expression_p): True for LAMBDA_EXPR.
* semantics.c (begin_class_definition): Restore error about defining
non-lambda class in template parm list.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/lambda-uneval10.C
trunk/gcc/testsuite/g++.dg/ext/complit16.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/cp/pt.c
trunk/gcc/cp/semantics.c
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Subject: [Bug libstdc++/89855] Inconsistent global namespace overload sets from #include <cmath>
Date: Wed, 27 Mar 2019 18:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89855
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> DR 456: PR6257
That's what established the status quo, which James referred to as "While
<math.h> may or may not declare functions in ::std::, and <cmath> may or may
not declare functions in ::".
We meet that requirement, but that's not the problem described here. The
problem is that the new rules established by DR 456 are not sufficient to
produce consistent overload sets.
>From gcc-bugs-return-638718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:47:07 2019
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Wed, 27 Mar 2019 18:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89725
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-27
CC| |jakub at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org,
| |spop at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There are two bugs here.
One minor, that get_fnname_from_decl is really a RTL function and the json
stuff shouldn't use that, if it wants the assembler name, it should use say
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl))
if it wants a printable name then current_function_name ().
The more important bug is buffer overflow in tree-data-ref.c.
build_classic_dist_vector is called on following ddr and loop_nest 3:
(Data Dep:
#(Data Ref:
# bb: 5
# stmt: M0[i_87][ii_92][1][jj_93] = _6;
# ref: M0[i_87][ii_92][1][jj_93];
# base_object: M0;
# Access function 0: {0, +, 1}_2
# Access function 1: 1
# Access function 2: {0, +, 1}_3
# Access function 3: {0, +, 1}_5
#)
#(Data Ref:
# bb: 5
# stmt: _7 = M0[i_87][ii_92][j_91][jj_93];
# ref: M0[i_87][ii_92][j_91][jj_93];
# base_object: M0;
# Access function 0: {0, +, 1}_2
# Access function 1: {0, +, 1}_4
# Access function 2: {0, +, 1}_3
# Access function 3: {0, +, 1}_5
#)
access_fn_A: {0, +, 1}_2
access_fn_B: {0, +, 1}_2
(subscript
iterations_that_access_an_element_twice_in_A: [0]
last_conflict: scev_not_known
iterations_that_access_an_element_twice_in_B: [0]
last_conflict: scev_not_known
(Subscript distance: 0 ))
access_fn_A: 1
access_fn_B: {0, +, 1}_4
(subscript
iterations_that_access_an_element_twice_in_A: [0]
last_conflict: 1
iterations_that_access_an_element_twice_in_B: [1]
last_conflict: 1
(Subscript distance: -1 ))
access_fn_A: {0, +, 1}_3
access_fn_B: {0, +, 1}_3
(subscript
iterations_that_access_an_element_twice_in_A: [0]
last_conflict: scev_not_known
iterations_that_access_an_element_twice_in_B: [0]
last_conflict: scev_not_known
(Subscript distance: 0 ))
access_fn_A: {0, +, 1}_5
access_fn_B: {0, +, 1}_5
(subscript
iterations_that_access_an_element_twice_in_A: [0]
last_conflict: scev_not_known
iterations_that_access_an_element_twice_in_B: [0]
last_conflict: scev_not_known
(Subscript distance: 0 ))
inner loop index: 0
loop nest: (3 4 5 )
)
DDR_NB_LOOPS (ddr) is 3 - the (3 4 5 ) loop nest, but when processing the first
of the 4 subscripts by build_classic_dist_vector_1,
access_fn_a and access_fn_b are both {0, +, 1}_2, so var_a is 2, *index_carry
is also initially 3
dist = int_cst_value (SUB_DISTANCE (subscript));
index = index_in_loop_nest (var_a, DDR_LOOP_NEST (ddr));
*index_carry = MIN (index, *index_carry);
and as 2 is not found in the DDR_LOOP_NEST (ddr), it returns 3, but both dist_v
and init_v are only pointers to 3 HOST_WIDE_INTs, so
if (init_v[index] != 0 && dist_v[index] != dist)
are already reads after end of vectors (so could segfault if nothing is mapped
after them), and as we are unlucky enough that dist_v[index] == dist == 0, we
happily overwrite the SYMBOL_REF at &init_v[3].
Wonder if we should do something like:
if (index == DDR_NB_LOOPS (ddr))
{
non_affine_dependence_relation (ddr);
return false;
}
or if there is some other bug somewhere else (e.g. that the loop nest should
never be just (3 4 5 ) when there are _2 ddrs).
>From gcc-bugs-return-638719-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:48:03 2019
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From: "hans.buchmann at fhnw dot ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89858] New: crash with libmpfr.so.6
Date: Wed, 27 Mar 2019 18:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858
Bug ID: 89858
Summary: crash with libmpfr.so.6
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Compiling the code:
------------------------------------------
static const unsigned LEN=2;
unsigned data[LEN];
void start()
{
for(unsigned i=0;i<LEN;++i) data[i]=0;
}
------------------------------------------
with:
../tc/bin/nios2-linux-gnu-g++ -O2 -c -o bug.o bug.cc
results in the following error:
------------------------------------------
during GIMPLE pass: evrp
bug.cc: In function 'void start()':
bug.cc:6:1: internal compiler error: Illegal instruction
}
^
0xab35ff crash_signal
/home/buchmann/resources/gcc-8.3.0/gcc/toplev.c:325
0xd58f31 wi::from_mpz(tree_node const*, __mpz_struct*, bool)
/home/buchmann/resources/gcc-8.3.0/gcc/wide-int.cc:269
0xbde2fe number_of_iterations_lt
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:1502
0xbe187a number_of_iterations_le
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:1618
0xbe187a number_of_iterations_cond
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:1821
0xbe187a number_of_iterations_exit_assumptions(loop*, edge_def*,
tree_niter_desc*, gcond**, bool)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:2375
0xbe2081 number_of_iterations_exit_assumptions(loop*, edge_def*,
tree_niter_desc*, gcond**, bool)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:2455
0xbe2081 number_of_iterations_exit(loop*, edge_def*, tree_niter_desc*, bool,
bool)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:2442
0xb6b80d number_of_latch_executions(loop*)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-scalar-evolution.c:2904
0xbe32df estimate_numbers_of_iterations(loop*)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:3920
0xbe5fcf loop_exits_before_overflow
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:4328
0xbe5fcf scev_probably_wraps_p(tree_node*, tree_node*, tree_node*, gimple*,
loop*, bool)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:4580
0xbe5fcf scev_probably_wraps_p(tree_node*, tree_node*, tree_node*, gimple*,
loop*, bool)
/home/buchmann/resources/gcc-8.3.0/gcc/tree-ssa-loop-niter.c:4538
0xd510c1 vr_values::adjust_range_with_scev(value_range*, loop*, gimple*,
tree_node*)
/home/buchmann/resources/gcc-8.3.0/gcc/vr-values.c:1751
0xf42fff evrp_range_analyzer::record_ranges_from_phis(basic_block_def*)
/home/buchmann/resources/gcc-8.3.0/gcc/gimple-ssa-evrp-analyze.c:265
0xf43ccb evrp_range_analyzer::enter(basic_block_def*)
/home/buchmann/resources/gcc-8.3.0/gcc/gimple-ssa-evrp-analyze.c:76
0xf41c0c evrp_dom_walker::before_dom_children(basic_block_def*)
/home/buchmann/resources/gcc-8.3.0/gcc/gimple-ssa-evrp.c:99
0xf27977 dom_walker::walk(basic_block_def*)
/home/buchmann/resources/gcc-8.3.0/gcc/domwalk.c:353
0xf42751 execute_early_vrp
/home/buchmann/resources/gcc-8.3.0/gcc/gimple-ssa-evrp.c:302
0xf42751 execute
/home/buchmann/resources/gcc-8.3.0/gcc/gimple-ssa-evrp.c:339
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
------------------------------------------
../tc/bin/nios2-linux-gnu-g++ -v
------------------------------------------
Using built-in specs.
COLLECT_GCC=../tc/bin/nios2-linux-gnu-g++
COLLECT_LTO_WRAPPER=/home/adm/hans.buchmann/qsc/arch/nios2/tc/bin/../libexec/gcc/nios2-linux-gnu/8.3.0/lto-wrapper
Target: nios2-linux-gnu
Configured with: /home/buchmann/resources/gcc-8.3.0/configure
--prefix=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc
--with-gmp=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc
--with-mpfr=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc
--with-mpc-include=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/include
--with-mpc-lib=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/lib
--target=nios2-linux-gnu
--disable-nls
--disable-werror
--enable-languages=c,c++
--disable-threads
--disable-nls
--disable-__cxa_atexit
--with-as=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/nios2-linux-gnu/bin//as
--with-ld=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/nios2-linux-gnu/bin//ld
--with-newlib
--with-sysroot
--without-headers
--disable-libssp
--enable-lto
--disable-shared
Thread model: single
gcc version 8.3.0 (GCC)
Some remarks:
- the -O2 seems to be relevant
- Surprisingly the crash occurs only with libmpfr.so.6
- uname -a
Linux v000090 3.10.0-514.el7.x86_64 #1 SMP
Wed Oct 19 11:24:13 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux
Sincerely
Hans Buchmann
>From gcc-bugs-return-638720-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:49:24 2019
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From: "john.boyer at tutanota dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89859] New: Addition of __restrict generates worse assembly
Date: Wed, 27 Mar 2019 18:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89859
Bug ID: 89859
Summary: Addition of __restrict generates worse assembly
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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With the following function signature (that is within a struct):
void compute(int *__restrict x) { /* ... */ }
Adding an additional __restrict for the this pointer as such:
void compute(int *__restrict x) __restrict { /* ... */ }
Will generate worse assembly. Restrict is only supposed to prohibit aliasing,
so this addition should either make the assembly better or the same.
Here is a full reproducible example: https://godbolt.org/z/SiYE7H.
Compare the assembly for the test::compute() method in both panes.
You will see with the additional __restrict, there is two additional move
instructions.
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Wed, 27 Mar 2019 18:50:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Darwin: Profile guided |Darwin: PGO + LTO +
|optimisation with cold |multiple threads creates
|sections and invalid symbol |corrupted profile info.
|redefinition |
--- Comment #15 from Iain Sandoe <iains at gcc dot gnu.org> ---
I wonder if there's some sub-set of this that can be made into a reproducer?
>From gcc-bugs-return-638722-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:50:52 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
Date: Wed, 27 Mar 2019 18:50:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-03-27
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> bug.cc:6:1: internal compiler error: Illegal instruction
> - Surprisingly the crash occurs only with libmpfr.so.6
How did you compile MPFR or how did you get MPFR?
>From gcc-bugs-return-638723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 18:57:18 2019
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Subject: [Bug middle-end/89859] Addition of __restrict generates worse assembly
Date: Wed, 27 Mar 2019 18:57:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*
Status|UNCONFIRMED |RESOLVED
Component|c++ |middle-end
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
_ZN4test7computeEPi.isra.0: // non-restrict
.LFB2:
.cfi_startproc
ldr x3, [x0]
mov w4, 99
ldr w2, [x0, 8]
add w2, w2, w1
str w2, [x0, 8]
strb w4, [x3]
ldr w2, [x0, 8]
add w1, w2, w1
str w1, [x0, 8]
ret
_ZN4test7computeEPi.isra.0: // restrict
.LFB2:
.cfi_startproc
ldr x3, [x0]
mov w4, 99
ldr w2, [x0, 8]
strb w4, [x3]
add w1, w2, w1, lsl 1
str w1, [x0, 8]
ret
// Actually it is not worse, there is one less load; just it looks worse due to
CISC notion of x86_64.
See above for AARCH64 assembly to show that is the story.
>From gcc-bugs-return-638724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:01:00 2019
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Subject: [Bug middle-end/89859] Addition of __restrict generates worse assembly
Date: Wed, 27 Mar 2019 19:00:00 -0000
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--- Comment #2 from John Boyer <john.boyer at tutanota dot com> ---
(In reply to Andrew Pinski from comment #1)
> _ZN4test7computeEPi.isra.0: // non-restrict
> .LFB2:
> .cfi_startproc
> ldr x3, [x0]
> mov w4, 99
> ldr w2, [x0, 8]
> add w2, w2, w1
> str w2, [x0, 8]
> strb w4, [x3]
> ldr w2, [x0, 8]
> add w1, w2, w1
> str w1, [x0, 8]
> ret
>
> _ZN4test7computeEPi.isra.0: // restrict
> .LFB2:
> .cfi_startproc
> ldr x3, [x0]
> mov w4, 99
> ldr w2, [x0, 8]
> strb w4, [x3]
> add w1, w2, w1, lsl 1
> str w1, [x0, 8]
> ret
>
> // Actually it is not worse, there is one less load; just it looks worse due
> to CISC notion of x86_64.
>
> See above for AARCH64 assembly to show that is the story.
Hey, what did you use to obtain that assembly? Also, is there anyway to display
this in godbolt instead of the CISC notion?
>From gcc-bugs-return-638725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:03:43 2019
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From: "hans.buchmann at fhnw dot ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89858] crash with libmpfr.so.6
Date: Wed, 27 Mar 2019 19:03:00 -0000
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--- Comment #2 from Hans Buchmann <hans.buchmann at fhnw dot ch> ---
Source from:
MPFR Version 4.0.1 from https://www.mpfr.org
made with:
TC=where to install
${MPFR_SRC}/configure \
--prefix=${TC} \
--with-gmp=${TC}
#
${MAKE}
${MAKE} install
A fake link:
libmpfr.so.6 -> /usr/lib64/libmpfr.so.4.1.1
to the original works perfectly
Sincerely
Hans Buchmann
>From gcc-bugs-return-638726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:06:15 2019
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Subject: [Bug middle-end/89859] Addition of __restrict generates worse assembly
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to John Boyer from comment #2)
> Hey, what did you use to obtain that assembly? Also, is there anyway to
> display this in godbolt instead of the CISC notion?
I have my own toolchain.
But godbolt have arm64 compilers:
https://godbolt.org/z/Dju0mP
>From gcc-bugs-return-638727-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:09:29 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Wed, 27 Mar 2019 19:09:00 -0000
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--- Comment #16 from Daniel Vollmer <zerolo at gmail dot com> ---
Created attachment 46038
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46038&action=edit
reproducer for threading issue -fprofile-generate
The attached example (see comments for command-lines) yields the following for
me (on Darwin):
> g++-7 -std=c++11 -fopenmp test.cpp -Ofast -flto -fprofile-generate
> ./a.out
> g++-7 -std=c++11 -fopenmp test.cpp -Ofast -flto -fprofile-use
test.cpp: In function 'parallel(int)':
test.cpp:24:1: error: corrupted profile info: profile data is not
flow-consistent
}
^
test.cpp:24:1: error: corrupted profile info: number of iterations for basic
block 0 thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of executions for edge 0-2
thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of iterations for basic
block 2 thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of executions for edge 2-3
thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of executions for edge 3-5
thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of executions for edge 3-4
thought to be 3732
test.cpp:24:1: error: corrupted profile info: number of iterations for basic
block 5 thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of executions for edge 5-6
thought to be -2120
test.cpp:24:1: error: corrupted profile info: number of iterations for basic
block 1 thought to be -2120
test.cpp: At top level:
test.cpp:24:1: warning: Missing counts for called function parallel(int)/1216
>From gcc-bugs-return-638728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:14:59 2019
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Subject: [Bug middle-end/89859] Addition of __restrict generates worse assembly
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--- Comment #4 from John Boyer <john.boyer at tutanota dot com> ---
(In reply to Andrew Pinski from comment #3)
> (In reply to John Boyer from comment #2)
> > Hey, what did you use to obtain that assembly? Also, is there anyway to
> > display this in godbolt instead of the CISC notion?
>
> I have my own toolchain.
> But godbolt have arm64 compilers:
> https://godbolt.org/z/Dju0mP
I see. Would you recommend using ARM for comparisons between different assembly
outputs to gauge which does more work?
>From gcc-bugs-return-638729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:15:51 2019
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Subject: [Bug target/89827] [8 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
Date: Wed, 27 Mar 2019 19:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89827
--- Comment #5 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Mar 27 19:14:35 2019
New Revision: 269975
URL: https://gcc.gnu.org/viewcvs?rev=269975&root=gcc&view=rev
Log:
PR target/89827
* config/i386/i386.c (dimode_scalar_chain::convert_reg):
Also process XEXP (src, 0) of a shift insn.
testsuite/ChangeLog:
PR target/89827
* gcc.target/i386/pr89827.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr89827.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/i386.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89859] Addition of __restrict generates worse assembly
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to John Boyer from comment #4)
> I see. Would you recommend using ARM for comparisons between different
> assembly outputs to gauge which does more work?
It depends. NOTE the output for x86_64 is fine if you understand that the add
instruction with the memory location is going to be "cracked" into two/three
different micro-ops. NOTE also x86_64 processor does merge load/stores
micro-ops sometimes but that does cost bandwidth.
Basically what I am saying is x86 processors are complex beasts where
understanding the code differences is not as simple as counting instructions.
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Subject: [Bug c++/89421] [9 Regression] ICE with lambda in template parameter list
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed by r269972.
>From gcc-bugs-return-638731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:26:31 2019
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Subject: [Bug target/89827] [8 Regression] ICE: in convert_op, at config/i386/i386.c:2098 with -Os -maes
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
>From gcc-bugs-return-638733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:31:46 2019
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Subject: [Bug c++/89831] [8/9 Regression] passing 'const ...' as 'this' argument discards qualifiers
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Jason Merrill <jason at gcc dot gnu.org> changed:
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>From gcc-bugs-return-638734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:39:01 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Wed, 27 Mar 2019 19:39:00 -0000
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--- Comment #17 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #16)
> Created attachment 46038 [details]
> reproducer for threading issue -fprofile-generate
>
> The attached example (see comments for command-lines) yields the following
> for me (on Darwin):
>
> > g++-7 -std=c++11 -fopenmp test.cpp -Ofast -flto -fprofile-generate
> > ./a.out
> > g++-7 -std=c++11 -fopenmp test.cpp -Ofast -flto -fprofile-use
> test.cpp: In function 'parallel(int)':
> test.cpp:24:1: error: corrupted profile info: profile data is not
> flow-consistent
> }
> ^
> test.cpp:24:1: error: corrupted profile info: number of iterations for basic
> block 0 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of executions for edge
> 0-2 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of iterations for basic
> block 2 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of executions for edge
> 2-3 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of executions for edge
> 3-5 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of executions for edge
> 3-4 thought to be 3732
> test.cpp:24:1: error: corrupted profile info: number of iterations for basic
> block 5 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of executions for edge
> 5-6 thought to be -2120
> test.cpp:24:1: error: corrupted profile info: number of iterations for basic
> block 1 thought to be -2120
> test.cpp: At top level:
> test.cpp:24:1: warning: Missing counts for called function parallel(int)/1216
hmm. this one is not repeating for me - please can you tell me:
OS version and the svn rev (or GIT sha1) for the version of 7 branch that
you're using?
(I assume without patches?)
>From gcc-bugs-return-638735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:45:39 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
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--- Comment #18 from Daniel Vollmer <zerolo at gmail dot com> ---
(In reply to Iain Sandoe from comment #17)
> hmm. this one is not repeating for me - please can you tell me:
> OS version and the svn rev (or GIT sha1) for the version of 7 branch that
> you're using?
> (I assume without patches?)
macOS Mojave 10.14.4 (18E226)
> g++-7 -v
Using built-in specs.
COLLECT_GCC=g++-7
COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc@7/7.4.0/libexec/gcc/x86_64-apple-darwin18.2.0/7.4.0/lto-wrapper
Target: x86_64-apple-darwin18.2.0
Configured with: ../configure --build=x86_64-apple-darwin18.2.0
--prefix=/usr/local/Cellar/gcc@7/7.4.0
--libdir=/usr/local/Cellar/gcc@7/7.4.0/lib/gcc/7
--enable-languages=c,c++,objc,obj-c++,fortran --program-suffix=-7
--with-gmp=/usr/local/opt/gmp --with-mpfr=/usr/local/opt/mpfr
--with-mpc=/usr/local/opt/libmpc --with-isl=/usr/local/opt/isl
--with-system-zlib --enable-checking=release --with-pkgversion='Homebrew GCC
7.4.0' --with-bugurl=https://github.com/Homebrew/homebrew-core/issues
--disable-nls --disable-multilib --with-native-system-header-dir=/usr/include
--with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
Thread model: posix
gcc version 7.4.0 (Homebrew GCC 7.4.0)
The homebrew build instructions are here:
https://github.com/Homebrew/homebrew-core/blob/master/Formula/gcc%407.rb
so that seems to be 7.4.0 without any patches.
>From gcc-bugs-return-638736-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 19:51:33 2019
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Subject: [Bug other/89860] New: liboffloadmic/runtime/offload_target.cpp:332]: (style) Array index 'i' is used before limits check.
Date: Wed, 27 Mar 2019 19:51:00 -0000
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Bug ID: 89860
Summary: liboffloadmic/runtime/offload_target.cpp:332]: (style)
Array index 'i' is used before limits check.
Product: gcc
Version: 9.0
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Source code is
if (m_vars[i].type.dst == c_extended_type && i < vars_total) {
it might be wise to sanity check i before use, not after.
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Wed, 27 Mar 2019 20:06:00 -0000
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--- Comment #19 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #18)
> (In reply to Iain Sandoe from comment #17)
> > hmm. this one is not repeating for me - please can you tell me:
> > OS version and the svn rev (or GIT sha1) for the version of 7 branch that
> > you're using?
> > (I assume without patches?)
>
> macOS Mojave 10.14.4 (18E226)
OK.. I've not updated my 10.14 box yet.... but...
> darwin18.2.0/7.4.0/lto-wrapper
> Target: x86_64-apple-darwin18.2.0
... it seems the toolchain was built with 10.14.2, so...
> so that seems to be 7.4.0 without any patches.
OK .. building 7.4.0..
.. for the record, what Xcode was yours bootstrapped with?
Also - the only thing I've seen so far is an occasional message about
mismatched gcd versions if the generate code is run when there's an existing
.gcda file present.
Does the example fail reliably every time for you?
How many cores has the machine got?
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89852] [9 Regression] ICE: unexpected expression of kind implicit_conv_expr
Date: Wed, 27 Mar 2019 20:18:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
struct A {
int b;
};
struct B {
A g;
};
const auto j = A{};
template <typename>
void k()
{
B{j};
}
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89831] [8/9 Regression] passing 'const ...' as 'this' argument discards qualifiers
Date: Wed, 27 Mar 2019 20:39:00 -0000
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Mar 27 20:39:19 2019
New Revision: 269977
URL: https://gcc.gnu.org/viewcvs?rev=269977&root=gcc&view=rev
Log:
PR c++/89831 - error with qualified-id in const member function.
Since the fix for 15272 we were remembering the wrong function to use at
instantiation time, because the type of the SCOPE_REF didn't reflect the
cv-quals of 'this'. Conveniently, we can fix this by simplifying the code.
* semantics.c (finish_non_static_data_member): Use object cv-quals
in scoped case, too.
Added:
trunk/gcc/testsuite/g++.dg/template/scope6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
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Subject: [Bug c++/89831] [8 Regression] passing 'const ...' as 'this' argument discards qualifiers
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] passing |[8 Regression] passing
|'const ...' as 'this' |'const ...' as 'this'
|argument discards |argument discards
|qualifiers |qualifiers
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/89744] [8/9 Regression] ICE with specialization of nested template class
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-638742-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 20:47:19 2019
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Subject: [Bug testsuite/89834] New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails
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--- Comment #9 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Sorry, failed to format the checkin correctly:
2019-03-27 Bill Schmidt <wschmidt@linux.ibm.com>
PR testsuite/89834
* gcc.dg/vect/pr81740-2.c: Require vect_hw_misalign.
Committed as r269978.
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Subject: [Bug tree-optimization/81740] [7/8 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu
Date: Wed, 27 Mar 2019 20:47:00 -0000
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Bug 81740 depends on bug 89834, which changed state.
Bug 89834 Summary: New test case gcc.dg/vect/pr81740-2.c introduced in r269938 fails
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89834
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug fortran/77504] [7/8/9 Regression] "is used uninitialized" with allocatable string and array constructors
Date: Wed, 27 Mar 2019 20:56:00 -0000
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #15)
> Based on c#14 this seems most likely like a Fortran FE issue, right?
Certainly looks like it.
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From: "zerolo at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Wed, 27 Mar 2019 21:04:00 -0000
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--- Comment #20 from Daniel Vollmer <zerolo at gmail dot com> ---
Interesting. The gcc-7.4.0 was the bottled (precompiled) version from homebrew,
generated on Dec 7th 2018, so I assume it must've been built on 10.14.1 or
10.14.2.
I rebuilt 7.4.0 locally just now (so in 10.14.4), and now I can no longer
reproduce the problem. I'm not sure what could cause the difference, though...
(Also, I had to patch a system header for compiling g++-7.4.0 in
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/ucred.h in
10.14.4 to not use _Atomic in C++ mode, as seemingly only clang understands
that).
>From gcc-bugs-return-638747-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 21:10:46 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: =?UTF-8?B?W0J1ZyBjKysvODk4NjFdIE5ldzogZysrLTg6IGVycm9yOiB1bnJlY29nbml6?= =?UTF-8?B?ZWQgY29tbWFuZCBsaW5lIG9wdGlvbiDigJgtZnNhbml0aXpl4oCZ?Date: Wed, 27 Mar 2019 21:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89861
Bug ID: 89861
Summary: g++-8: error: unrecognized command line option
‘-fsanitize’
Product: gcc
Version: 8.2.0
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Could GCC highlight that -fsanitize requires a parameter?
This might equally apply to other options.
$ g++-8 -fsanitize=undefined -Wall -o exception exception.cpp
$ g++-8 -fsanitize -Wall -o exception exception.cpp
g++-8: error: unrecognized command line option ‘-fsanitize’
$
eg
$ g++-8 -fsanitize -Wall -o exception exception.cpp
g++-8: error: command line option ‘-fsanitize’ requires a parameter
$
>From gcc-bugs-return-638748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 21:15:49 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #21 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #20)
> Interesting. The gcc-7.4.0 was the bottled (precompiled) version from
> homebrew, generated on Dec 7th 2018, so I assume it must've been built on
> 10.14.1 or 10.14.2.
10.14.2 implied by the -v output.
> I rebuilt 7.4.0 locally just now (so in 10.14.4), and now I can no longer
> reproduce the problem. I'm not sure what could cause the difference,
> though...
that's always the question - even if it involves a bisection to find it.
> (Also, I had to patch a system header for compiling g++-7.4.0 in
> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/ucred.h
> in 10.14.4 to not use _Atomic in C++ mode, as seemingly only clang
> understands that).
That seems rather worrying.. editing system headers is not a good plan.
There's a mechanism for the compiler to use if such tricks prove necessary
(fix-includes).
===
So to try and get some sync .. when you bootstrap GCC, what compiler do you use
for the bootstrap - and what as/ld etc?
====
NOTE: There have been salient patches post 7.4.0 that could affect things -
but, rather than build some arbitrary version of 7.4.1, I'd next suggest seeing
if the issue repeats on 8.3.
My current feeling is that 8.3 is in pretty reasonable shape on Darwin (I have
a bunch of pending patches that ought to make things more robust - will push a
branch in due course).
>From gcc-bugs-return-638750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 21:18:43 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Wed, 27 Mar 2019 21:18:00 -0000
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--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
I don't have access to that type of machine and honestly don't know the ISA
well enough to know the differences between what runs well and what doesn't
just by looking at the code. Can you point out some code/function where the
assembler code is worse?
The patch you bisected to only removes unneeded conflicts in the conflict
graph, which gives the allocators more freedom, which in general is a good
thing. That said, since these are all heuristics built on top of heuristics,
it's not impossible that giving more freedom could lead to worse code.
My guess is though, we're probably tickling a AMD specific hardware pipeline
feature, since you said you don't see the same thing on Intel.
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Subject: [Bug target/85667] ms_abi rules aren't followed when returning short structs with float values
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--- Comment #8 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Mar 27 21:17:48 2019
New Revision: 269979
URL: https://gcc.gnu.org/viewcvs?rev=269979&root=gcc&view=rev
Log:
PR target/85667
* config/i386/i386.c (ix86_function_value_1): Call the newly added
function for 32-bit MS_ABI.
(function_value_ms_32): New function.
testsuite/ChangeLog:
PR target/85667
* gcc.target/i386/pr85667-5.c: New testcase.
* gcc.target/i386/pr85667-6.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr85667-5.c
trunk/gcc/testsuite/gcc.target/i386/pr85667-6.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 21:20:55 2019
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Subject: [Bug target/85667] ms_abi rules aren't followed when returning short structs with float values
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
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Subject: [Bug target/88521] GCC from r266355 miscompiles x265 for mingw-w64 target
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Bug 88521 depends on bug 85667, which changed state.
Bug 85667 Summary: ms_abi rules aren't followed when returning short structs with float values
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85667
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
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--- Comment #22 from Daniel Vollmer <zerolo at gmail dot com> ---
(In reply to Iain Sandoe from comment #21)
> > I rebuilt 7.4.0 locally just now (so in 10.14.4), and now I can no longer
> > reproduce the problem. I'm not sure what could cause the difference,
> > though...
>
> that's always the question - even if it involves a bisection to find it.
There's nothing I can think of bisecting -- I assume it's an interaction / ABI
problem between 10.14.2 and 10.14.4 (or .3).
>
> > (Also, I had to patch a system header for compiling g++-7.4.0 in
> > /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/ucred.h
> > in 10.14.4 to not use _Atomic in C++ mode, as seemingly only clang
> > understands that).
>
> That seems rather worrying.. editing system headers is not a good plan.
> There's a mechanism for the compiler to use if such tricks prove necessary
> (fix-includes).
I've reported the bug to Apple, the Command-Line Tools (which include these
headers) from 10.14.3 and older were fine (as they didn't include the use of
_Atomic in C++ mode), but I don't think this has anything to do with this
issue.
> So to try and get some sync .. when you bootstrap GCC, what compiler do you
> use for the bootstrap - and what as/ld etc?
For the compilation just (which is the one where no problem occurred), I used
Xcode 10.2 which is
> clang++ -v
Apple LLVM version 10.0.1 (clang-1001.0.46.3)
Target: x86_64-apple-darwin18.5.0
Thread model: posix
InstalledDir:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
> ld -v
@(#)PROGRAM:ld PROJECT:ld64-450.3
BUILD 18:01:43 Mar 13 2019
configured to support archs: armv6 armv7 armv7s arm64 arm64e arm64_32 i386
x86_64 x86_64h armv6m armv7k armv7m armv7em
LTO support using: LLVM version 10.0.1, (clang-1001.0.46.3) (static support for
22, runtime is 22)
TAPI support using: Apple TAPI version 10.0.1 (tapi-1001.0.4.1)
> as -v
Apple LLVM version 10.0.1 (clang-1001.0.46.3)
Target: x86_64-apple-darwin18.5.0
Thread model: posix
InstalledDir:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang"
-cc1as -triple x86_64-apple-macosx10.14.0 -filetype obj -main-file-name -
-target-cpu penryn -fdebug-compilation-dir
/Users/maven/Development/bugs/multiple_threads_profile -dwarf-debug-producer
Apple LLVM version 10.0.1 (clang-1001.0.46.3) -dwarf-version=4
-mrelocation-model pic -o a.out -
> NOTE: There have been salient patches post 7.4.0 that could affect things -
> but, rather than build some arbitrary version of 7.4.1, I'd next suggest
> seeing if the issue repeats on 8.3.
>
> My current feeling is that 8.3 is in pretty reasonable shape on Darwin (I
> have a bunch of pending patches that ought to make things more robust - will
> push a branch in due course).
I've tried this same reproducer using g++-8.3.0, also pre-built (bottled) by
homebrew, on darwin18.2.0 (so the same OS version but not necessarily
bootstrapping compiler as the failing 7.4.0), and that version also seems to
work fine.
>From gcc-bugs-return-638754-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 27 21:45:45 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Wed, 27 Mar 2019 21:45:00 -0000
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--- Comment #23 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #22)
> (In reply to Iain Sandoe from comment #21)
> I've tried this same reproducer using g++-8.3.0, also pre-built (bottled) by
> homebrew, on darwin18.2.0 (so the same OS version but not necessarily
> bootstrapping compiler as the failing 7.4.0), and that version also seems to
> work fine.
My freshly-built 7.4 (bootstrapped with 10.1 xc effectively) doesn't reproduce
it, neither do any other branches I have lying around - so we're not there yet.
I take it that the full code does fail with 8.3?
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
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--- Comment #22 from janus at gcc dot gnu.org ---
Author: janus
Date: Wed Mar 27 22:40:22 2019
New Revision: 269980
URL: https://gcc.gnu.org/viewcvs?rev=269980&root=gcc&view=rev
Log:
fix PR 85537
2019-03-27 Janus Weil <janus@gcc.gnu.org>
PR fortran/85537
* expr.c (gfc_check_assign_symbol): Reject internal and dummy
procedures
in procedure pointer initialization.
2019-03-27 Janus Weil <janus@gcc.gnu.org>
PR fortran/85537
* gfortran.dg/dummy_procedure_11.f90: Fix test case.
* gfortran.dg/pointer_init_11.f90: New test case.
Added:
trunk/gcc/testsuite/gfortran.dg/pointer_init_11.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/dummy_procedure_11.f90
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Subject: [Bug fortran/39627] [meta-bug] Fortran 2008 support
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Bug 39627 depends on bug 85537, which changed state.
Bug 85537 Summary: [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85537
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/85537] [F08] Invalid memory reference at runtime when calling subroutine through procedure pointer
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janus at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #23 from janus at gcc dot gnu.org ---
Fixed on trunk with r269980. Closing. Thanks for the report!
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Subject: [Bug c++/89854] diagnostic differences between misuse of "." and "->"
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |dmalcolm at gcc dot gnu.org,
| |egallager at gcc dot gnu.org
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
I think there's a dup of this around here somewhere...
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Subject: [Bug rtl-optimization/89862] New: LTO bootstrap fails for ARM
Date: Thu, 28 Mar 2019 03:13:00 -0000
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Bug ID: 89862
Summary: LTO bootstrap fails for ARM
Product: gcc
Version: 9.0
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Created attachment 46039
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46039&action=edit
patch
With the commit:
commit 67c18bce7054934528ff5930cca283b4ac967dca
Author: ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Jan 31 10:03:06 2018 +0000 PR rtl-optimization/84071
* combine.c (record_dead_and_set_regs_1): Record the source
unmodified
for a paradoxical SUBREG on a WORD_REGISTER_OPERATIONS target.
LTO bootstrap fails for arm (possibly for other WORD_REGISTER_OPERATIONS
targets).
There are internal compiler error: in operator+=, at profile-count.h:792. It
looks like the profile_count is set incorrectly.
Commit 67c18bce7054934528ff5930cca283b4ac967dca skips generating gen_lowpart
for
(set (subreg:SI (reg:QI 1434) 0)
(const_int 224 [0xe0])) and likes. This seems to be the reason for the
error.
attached patch fixes this. Does this look reasonable?
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Arseny Solokha <asolokha at gmx dot com> changed:
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--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Eric Gallager from comment #1)
> I think there's a dup of this around here somewhere...
It is a duplicate of PR84898.
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=62001
--- Comment #22 from Eric Gallager <egallager at gcc dot gnu.org> ---
for some reason when bug 62001 was closed I thought it was this one, but I
guess they're different...
>From gcc-bugs-return-638763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 04:12:19 2019
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Subject: [Bug c++/84898] Fix-it hints for '.' vs '->'
Date: Thu, 28 Mar 2019 04:12:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |tromey at gcc dot gnu.org
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
*** Bug 89854 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 04:12:17 2019
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Subject: [Bug c++/89854] diagnostic differences between misuse of "." and "->"
Date: Thu, 28 Mar 2019 04:12:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #2)
> (In reply to Eric Gallager from comment #1)
> > I think there's a dup of this around here somewhere...
>
> It is a duplicate of PR84898.
Right, thanks.
*** This bug has been marked as a duplicate of bug 84898 ***
>From gcc-bugs-return-638764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 04:29:33 2019
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Subject: [Bug other/40789] fixincludes/fixincl.c: duplicate call to close ?
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |egallager at gcc dot gnu.org
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
did you discover this with cppcheck or by looking manually?
>From gcc-bugs-return-638765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 04:38:10 2019
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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
Date: Thu, 28 Mar 2019 04:38:00 -0000
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--- Comment #8 from kugan at gcc dot gnu.org ---
(In reply to rsandifo@gcc.gnu.org from comment #7)
> Thanks for looking at this.
>
> (In reply to kugan from comment #6)
> > cmp w3, 0
> > ble .L1
> > sub w3, w3, #1
> > mov x4, 0
> > cntw x5
> > ptrue p1.s, all
> > lsr w3, w3, 1
> > add w3, w3, 1
> > whilelo p0.s, xzr, x3
> > .p2align 3,,7
> > .L3:
> > ld2w {z4.s - z5.s}, p0/z, [x1, x4, lsl 2]
> > ld2w {z2.s - z3.s}, p0/z, [x2, x4, lsl 2]
> > add z0.s, z4.s, z2.s
> > sub z1.s, z5.s, z3.s
> > st2w {z0.s - z1.s}, p0, [x0, x4, lsl 2]
> > whilelo p0.s, x5, x3
> > incb x4, all, mul #2
> > incw x5
> > ptest p1, p0.b
> > bne .L3
> > .L1:
> > ret
> > .cfi_endproc
>
> This doesn't look right. x4 is an index, so it should be
> incremented by the number of words in two vectors, rather than
> the number of bytes in two vectors.
Thanks for the comments. Fixed it with the attached patch it generates
f:
.LFB0:
.cfi_startproc
cmp w3, 0
ble .L1
sub w5, w3, #1
cntw x4
mov x3, 0
ptrue p1.s, all
lsr w5, w5, 1
add w5, w5, 1
whilelo p0.s, xzr, x5
.p2align 3,,7
.L3:
ld2w {z4.s - z5.s}, p0/z, [x1, x3, lsl 2]
ld2w {z2.s - z3.s}, p0/z, [x2, x3, lsl 2]
add z0.s, z4.s, z2.s
sub z1.s, z5.s, z3.s
st2w {z0.s - z1.s}, p0, [x0, x3, lsl 2]
whilelo p0.s, x4, x5
inch x3
incw x4
ptest p1, p0.b
bne .L3
.L1:
ret
.cfi_endproc
>From gcc-bugs-return-638766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 04:40:06 2019
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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kugan at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Attachment #45686|0 |1
is obsolete| |
--- Comment #9 from kugan at gcc dot gnu.org ---
Created attachment 46040
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46040&action=edit
patch
>From gcc-bugs-return-638767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:01:16 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89863] New: [meta-bug] Issues that cppcheck finds that gcc misses
Date: Thu, 28 Mar 2019 05:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
Bug ID: 89863
Summary: [meta-bug] Issues that cppcheck finds that gcc misses
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic, meta-bug
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: egallager at gcc dot gnu.org
CC: dcb314 at hotmail dot com, ettl.martin at gmx dot de
Depends on: 33715, 47170, 49564, 50355, 52124, 53871, 54582,
56370, 58237, 59205, 63854, 64524, 65446, 67729,
70800, 79364, 79950, 81674, 82100, 88057
Target Milestone: ---
David Binderman often files bugs he finds with cppcheck, so making a meta-bug
to group them all. Some of these checks might also be inspiration for new gcc
warnings.
(Dave, let me know if I missed any)
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33715
[Bug 33715] Suggest -Wmemleak warning for C++
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47170
[Bug 47170] [cppcheck][PATCH] found resource leaks in gcc/intl/localealias.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49564
[Bug 49564] [cppcheck][patch] fixed resource and memory leaks in
/gcc/gcc/config/alpha/host-osf.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50355
[Bug 50355] Comparison is always true in alpha config code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52124
[Bug 52124] config/cr16/cr16.c: possibly redundant code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53871
[Bug 53871] Please warn about endless loops if they are obvious
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54582
[Bug 54582] gap in FORTIFY checking of buffer lengths
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56370
[Bug 56370] RFE: warn on 'foo = realloc(foo, …)'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58237
[Bug 58237] gcc fails to detect obvious resource leaks
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59205
[Bug 59205] config/iq2000/iq2000.c:2188: possible cut'n'paste error ?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63854
[Bug 63854] Fix memory leaks seen in JIT
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64524
[Bug 64524] gcc does not warn about same expression in both parts of ternary
operator
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65446
[Bug 65446] Improve -Wformat-signedness
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67729
[Bug 67729] -Wformat should warn for %Ns where the buffer size is known to be
less than N in size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70800
[Bug 70800] libgcc/config/libbid/bid_binarydecimal.c: suspicious comparison ?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79364
[Bug 79364] some variadic functions with an empty struct miscompiled with C++
(at least for x64 targets)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79950
[Bug 79950] G++ cannot detect simple off by one error in STL classes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81674
[Bug 81674] gcc cannot detect missing initialisers for fields in constructors
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82100
[Bug 82100] gcc does not warn about code that is unreachable due to conflicting
conditions [subset of reviving -Wunreachable-code]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88057
[Bug 88057] libdecnumber/decCommon.c:479: use of out of scope variable
>From gcc-bugs-return-638768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:05:03 2019
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Subject: [Bug c++/33715] Suggest -Wmemleak warning for C++
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #3)
> (In reply to comment #0)
> > I would like to have a warning in C++ that warns about local variables assigned
> > via operator new or operator new[], but then are not freed in an exception
> > handling clause in case of an exception.
>
> Simple solution: don't do that. Ever.
>
That's easy enough advice to follow if you're writing code yourself, however,
it isn't very helpful for compiling other people's code who ignored that advice
and wrote such code anyways.
> Then you don't need a compiler warning.
>
> If you insist on writing such code the cppcheck tool can issue the sort of
> warning you want (but it gives lots of false positives too).
>From gcc-bugs-return-638769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:29:33 2019
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Subject: [Bug libgcc/70800] libgcc/config/libbid/bid_binarydecimal.c: suspicious comparison ? (missed -Wtautological-compare)
Date: Thu, 28 Mar 2019 05:29:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |egallager at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=71852
Summary|libgcc/config/libbid/bid_bi |libgcc/config/libbid/bid_bi
|narydecimal.c: suspicious |narydecimal.c: suspicious
|comparison ? |comparison ? (missed
| |-Wtautological-compare)
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #3)
> I just discovered that clang++ can be made to find this bug by
> adding flag -Wtautological-compare.
>
> jan22a.cc:6:17: warning: bitwise comparison always
> evaluates to false [-Wtautological-compare]
> if ((n & 0x30) == 1)
> ~~~~~~~~~~~^~~~
I think Marek enhanced -Wtautological-compare to catch cases like this, in
which case bug 71852 is related
>From gcc-bugs-return-638770-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:32:28 2019
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Subject: [Bug target/79364] some variadic functions with an empty struct miscompiled with C++ (at least for x64 targets)
Date: Thu, 28 Mar 2019 05:32:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=69846,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=52154
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Guillaume Knispel from comment #4)
> The dup seems to be 69846
> This might also be vaguely related to 52154
Adding "bug" before the numbers will get bugzilla to auto-link them for you:
bug 69846
bug 52154
(In reply to Guillaume Knispel from comment #2)
> Note: I hit that bug after cleaning some real code after a cppcheck static
> analysis.
What did the cppcheck output look like?
>From gcc-bugs-return-638771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:47:08 2019
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Subject: [Bug c++/70361] Obviously false code in if not detected
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| |a/show_bug.cgi?id=70800
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
same issue as the one in bug 70800
>From gcc-bugs-return-638772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:52:57 2019
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Subject: [Bug c++/61339] add mismatch between struct and class [-Wmismatched-tags] to non-bugs
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Summary|add mismatch between struct |add mismatch between struct
|and class to non-bugs |and class
| |[-Wmismatched-tags] to
| |non-bugs
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
Regardless of compatibility with MS, writing code consistently makes things
easier for human readers to follow, and should be encouraged. At least IMO.
>From gcc-bugs-return-638773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 05:58:08 2019
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Subject: [Bug c/79022] trunk/gcc/gengtype.h: create_nested_ptr_option: decl & defn don't match ?
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #1)
> Confirmed. The parameter names between the function declaration in the
> header and its definition don't match.
Related to this convo on the mailing lists:
https://gcc.gnu.org/ml/gcc/2019-03/msg00058.html
>From gcc-bugs-return-638774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 06:16:31 2019
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Subject: [Bug rtl-optimization/82338] valgrind error in inherit_in_ebb
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Vladimir Makarov from comment #3)
> Author: vmakarov
> Date: Fri Sep 29 17:15:24 2017
> New Revision: 253299
>
> URL: https://gcc.gnu.org/viewcvs?rev=253299&root=gcc&view=rev
> Log:
> 2017-09-29 Vladimir Makarov <vmakarov@redhat.com>
>
> PR rtl-optimization/82338
> * lra-constraints.c (inherit_in_ebb): Check usage_insns check.
>
>
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/lra-constraints.c
Did this fix it?
>From gcc-bugs-return-638775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 06:26:17 2019
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Subject: [Bug c/85608] ubsan in cse.c:2194
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #1)
> Problem seems to occur sometime before revision 258870.
How much further before r258870 ?
>From gcc-bugs-return-638776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 06:33:38 2019
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Subject: =?UTF-8?B?W0J1ZyB0YXJnZXQvODU5MTBdIGNvbmZpZy9hYXJjaDY0L2FhcmNoNjQuYzox?= =?UTF-8?B?NTY1MzoxMjogd2FybmluZzogZHVwbGljYXRlZCDigJhpZuKAmSBjb25kaXRp?= =?UTF-8?B?b24=?Date: Thu, 28 Mar 2019 06:33:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to rsandifo@gcc.gnu.org from comment #2)
> Author: rsandifo
> Date: Thu Aug 23 08:51:38 2018
> New Revision: 263803
>
> URL: https://gcc.gnu.org/viewcvs?rev=263803&root=gcc&view=rev
> Log:
> Fix aarch64_evpc_tbl guard (PR 85910)
>
> This patch fixes a typo in aarch64_expand_vec_perm_const_1 that I
> introduced as part of the SVE changes. I don't know of any cases in
> which it has any practical effect, since we'll eventually try to use
> TBL as a variable permute instead. Having the code is still an
> important part of defining the interface properly and so we shouldn't
> simply drop it.
>
> 2018-08-23 Richard Sandiford <richard.sandiford@arm.com>
>
> gcc/
> PR target/85910
> * config/aarch64/aarch64.c (aarch64_expand_vec_perm_const_1): Fix
> aarch64_evpc_tbl guard.
>
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/config/aarch64/aarch64.c
Did this fix it?
>From gcc-bugs-return-638777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 06:37:30 2019
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Subject: [Bug target/85968] gcc/config/arc/arc.c:9805: bad test ?
Date: Thu, 28 Mar 2019 06:37:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Claudiu Zissulescu from comment #1)
> Fixed by commit:
>
> r261623 | claziss | 2018-06-15 14:22:10 +0300 (Fri, 15 Jun 2018) | 9 lines
> Changed paths:
> M /trunk/gcc/ChangeLog
> M /trunk/gcc/config/arc/arc.c
>
> [ARC] Fix warning in arc_return_address_register.
>
> The if condition in arc_return_address_register which selects the arc
> return address is not correct. The issue is signalized in bugzilla 85968.
>
> gcc/
> 2018-06-15 Claudiu Zissulescu <claziss@synopsys.com>
>
> * config/arc/arc.c (arc_return_address_register): Fix if-condition.
(In reply to claziss from comment #2)
> Author: claziss
> Date: Wed Nov 14 11:31:12 2018
> New Revision: 266107
>
> URL: https://gcc.gnu.org/viewcvs?rev=266107&root=gcc&view=rev
> Log:
> [ARC] Backport form mainline
> PR target/85968
> * config/arc/arc.c (arc_return_address_register): Fix
> if-condition.
>
>
> Modified:
> branches/gcc-8-branch/gcc/ChangeLog
> branches/gcc-8-branch/gcc/config/arc/arc.c
So can this be closed now, or does it need to be backported to 7, as well?
>From gcc-bugs-return-638778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 06:56:51 2019
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Subject: [Bug target/83822] trunk/gcc/config/rs6000/rs6000-string.c:970]: (style) Redundant condition
Date: Thu, 28 Mar 2019 06:56:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Blocks| |89863
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #2)
> (In reply to Eric Gallager from comment #1)
> > Is this from cppcheck again?
>
> Yes. Anything from me that has (style) or (warning) or (error) or
> (performance) in it is from cppcheck.
>
> >If so, I'm considering making a meta-bug for
> > all your bugs about things that cppcheck has found; remind me...
>
> Fell free to use any structure you like - as long as the cppcheck bugs
> keep getting fixed I'll keep reporting them.
I just opened bug 89863 but forgot the rule you mentioned here, so it looks
like I'll have to go back and add some more...
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
[Bug 89863] [meta-bug] Issues that cppcheck finds that gcc misses
>From gcc-bugs-return-638779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:14:27 2019
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Subject: [Bug other/82648] libiberty/regex.c:2364]: pointless test ?
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |egallager at gcc dot gnu.org
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
I'd think -Wtype-limits would catch this...
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
[Bug 89863] [meta-bug] Issues that cppcheck finds that gcc misses
>From gcc-bugs-return-638780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:21:36 2019
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Subject: [Bug other/89259] liboffloadmic/runtime/offload_omp_host.cpp:692: pointless test ?
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
I'd think -Wtype-limits would catch this...
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
[Bug 89863] [meta-bug] Issues that cppcheck finds that gcc misses
>From gcc-bugs-return-638781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:25:40 2019
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This is ARMv4 though.
>From gcc-bugs-return-638782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:37:49 2019
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Subject: [Bug rtl-optimization/89862] LTO bootstrap fails for ARM
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
Ever confirmed|0 |1
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Can you try this instead?
Index: rtl.h
===================================================================
--- rtl.h (revision 269886)
+++ rtl.h (working copy)
@@ -4401,6 +4401,7 @@ word_register_operation_p (const_rtx x)
{
switch (GET_CODE (x))
{
+ case CONST_INT:
case ROTATE:
case ROTATERT:
case SIGN_EXTRACT:
>From gcc-bugs-return-638783-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:38:50 2019
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Subject: [Bug target/89788] trunk/liboffloadmic/runtime/emulator/coi_host.cpp:175]: (error) Null pointer dereference
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
Blocks| |89863
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
If you compile with -Wnull-dereference, does that catch it?
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
[Bug 89863] [meta-bug] Issues that cppcheck finds that gcc misses
>From gcc-bugs-return-638784-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:40:07 2019
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Subject: [Bug target/83822] trunk/gcc/config/rs6000/rs6000-string.c:970]: (style) Redundant condition
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--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #6)
> (In reply to David Binderman from comment #2)
> > (In reply to Eric Gallager from comment #1)
> > > Is this from cppcheck again?
> >
> > Yes. Anything from me that has (style) or (warning) or (error) or
> > (performance) in it is from cppcheck.
> >
> > >If so, I'm considering making a meta-bug for
> > > all your bugs about things that cppcheck has found; remind me...
> >
> > Fell free to use any structure you like - as long as the cppcheck bugs
> > keep getting fixed I'll keep reporting them.
>
> I just opened bug 89863 but forgot the rule you mentioned here, so it looks
> like I'll have to go back and add some more...
...ok, I think I should have all the open ones now.
>From gcc-bugs-return-638785-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:52:48 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Thu, 28 Mar 2019 07:52:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Just for the record, my Ryzen machine periodic tester probably improved due to
the revision:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=158.377.0&plot.1=41.377.0&plot.2=70.377.0&plot.3=31.377.0
As seen, it's now about 5% faster than GCC8 branch.
>From gcc-bugs-return-638786-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:54:30 2019
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Subject: [Bug target/89788] trunk/liboffloadmic/runtime/emulator/coi_host.cpp:175]: (error) Null pointer dereference
Date: Thu, 28 Mar 2019 07:54:00 -0000
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--- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
No. Additional bug in -Wnull-dereference ?
>From gcc-bugs-return-638787-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 07:59:13 2019
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Subject: [Bug other/89259] liboffloadmic/runtime/offload_omp_host.cpp:692: pointless test ?
Date: Thu, 28 Mar 2019 07:59:00 -0000
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--- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
It does. -Wtype-limits is in -Wextra, but not in -Wall.
>From gcc-bugs-return-638788-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:03:51 2019
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Subject: [Bug other/82648] libiberty/regex.c:2364]: pointless test ?
Date: Thu, 28 Mar 2019 08:03:00 -0000
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--- Comment #2 from David Binderman <dcb314 at hotmail dot com> ---
I agree, but -Wtype-limits is in -Wextra, not commonly used -Wall.
>From gcc-bugs-return-638789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:11:30 2019
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Subject: [Bug c/85608] ubsan in cse.c:2194
Date: Thu, 28 Mar 2019 08:11:00 -0000
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--- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
No idea, and currently no resource to find out. Sorry.
There are plenty of ubsan bugs in gcc hanging around for
months, if not years. This is merely another one.
Wide int seems to be the favoured solution, but that doesn't seem to have been
applied. AFAIK development is in stage 1, so now would be an appropriate time,
if there is developer resource available.
>From gcc-bugs-return-638790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:21:55 2019
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Subject: [Bug target/89788] trunk/liboffloadmic/runtime/emulator/coi_host.cpp:175]: (error) Null pointer dereference (missed -Wnull-dereference)
Date: Thu, 28 Mar 2019 08:21:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Blocks| |86172
Summary|trunk/liboffloadmic/runtime |trunk/liboffloadmic/runtime
|/emulator/coi_host.cpp:175] |/emulator/coi_host.cpp:175]
|: (error) Null pointer |: (error) Null pointer
|dereference |dereference (missed
| |-Wnull-dereference)
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #3)
> No. Additional bug in -Wnull-dereference ?
Guess so.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86172
[Bug 86172] [meta-bug] issues with -Wnull-dereference
>From gcc-bugs-return-638791-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:25:14 2019
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Subject: [Bug c++/77875] C++ core issue 1288
Date: Thu, 28 Mar 2019 08:25:00 -0000
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--- Comment #3 from Lénárd Szolnoki <leni536 at gmail dot com> ---
A more worrisome example presumably for this same bug, it's a miscompilation:
template <typename T>
decltype(auto) as_const(T& t) {
using const_ref = const T&;
return const_ref{t};
}
int main() {
int i = 42;
return as_const(i);
}
$ g++ -std=c++17 -O0 -fsanitize=undefined -Wall -pedantic main.cpp && ./a.out
main.cpp: In instantiation of 'decltype(auto) as_const(T&) [with T = int]':
main.cpp:9:22: required from here
main.cpp:4:23: warning: returning reference to temporary [-Wreturn-local-addr]
return const_ref{t};
^
main.cpp:4:23: runtime error: reference binding to null pointer of type 'const
int'
main.cpp:9:22: runtime error: load of null pointer of type 'const int'
bash: line 7: 802 Segmentation fault (core dumped) ./a.out
An UB is added where should be none.
>From gcc-bugs-return-638792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:28:56 2019
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Subject: [Bug rtl-optimization/86525] [missed-optimization] extraneous instruction emitted in switch converted to look-uptable load
Date: Thu, 28 Mar 2019 08:28:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks for report, I know that clang is using an intermediate instead of a
constant array.
>From gcc-bugs-return-638793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:29:15 2019
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Subject: [Bug target/89848] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2099 with -O2 -msse2 -mtune=pentium3m
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-28
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Target Milestone|--- |8.4
Ever confirmed|0 |1
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Ah, there is another one:
--cut here--
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index b5f20f1597ed..0aa833bb4842 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -1901,7 +1901,10 @@ dimode_scalar_chain::make_vector_copies (unsigned regno)
|| GET_CODE (src) == LSHIFTRT)
&& !CONST_INT_P (XEXP (src, 1))
&& reg_or_subregno (XEXP (src, 1)) == regno)
- XEXP (src, 1) = vreg;
+ {
+ XEXP (src, 0) = replace_with_subreg (XEXP (src, 0), reg, reg);
+ XEXP (src, 1) = vreg;
+ }
}
else
replace_with_subreg_in_insn (insn, reg, vreg);
--cut here--
>From gcc-bugs-return-638794-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:32:26 2019
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89864] New: [9.0 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Thu, 28 Mar 2019 08:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89864
Bug ID: 89864
Summary: [9.0 regression] gcc fails to build/bootstrap with
XCode 10.2
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: juergen.reuter at desy dot de
Target Milestone: ---
Using the svn revision r269983 under MACOSX 10.14.4/Darwin 18.5.0 with XCode
10.2 bootstrapping gcc 9.0 fails with the following error:
/usr/local/packages/gcc_9.0/_build/./prev-gcc/xg++
-B/usr/local/packages/gcc_9.0/_build/./prev-gcc/
-B/usr/local/x86_64-apple-darwin18.5.0/bin/ -nostdinc++
-B/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.5.0/libstdc++-v3/src/.libs
-B/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.5.0/libstdc++-v3/libsupc++/.libs
-I/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.5.0/libstdc++-v3/include/x86_64-apple-darwin18.5.0
-I/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.5.0/libstdc++-v3/include
-I/usr/local/packages/gcc_9.0/libstdc++-v3/libsupc++
-L/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.5.0/libstdc++-v3/src/.libs
-L/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.5.0/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-DHAVE_CONFIG_H -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/../include
-I./../intl -I../../gcc/../libcpp/include -I/usr/local//include
-I/usr/local//include -I/usr/local//include -I../../gcc/../libdecnumber
-I../../gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/../libbacktrace
-o darwin-driver.o -MT darwin-driver.o -MMD -MP -MF ./.deps/darwin-driver.TPo
../../gcc/config/darwin-driver.c
In file included from /usr/include/sys/sysctl.h:83,
from ../../gcc/config/darwin-driver.c:30:
/usr/include/sys/ucred.h:94:2: error: '_Atomic' does not name a type
94 | _Atomic u_long cr_ref; /* reference count */
| ^~~~~~~
make[3]: *** [darwin-driver.o] Error 1
make[2]: *** [all-stage2-gcc] Error 2
make[1]: *** [stage2-bubble] Error 2
make: *** [all] Error 2
I guess that this was not triggered by a recent change in the gcc code but by
changes in XCode 10.2 (or Darwin 18.5.0/MACOSX 10.14.4). Darwin 10.14.3 or
XCode 10.1 has been working with r269670.
>From gcc-bugs-return-638795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:38:23 2019
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Subject: [Bug sanitizer/89832] confusing error message when there is a problem with ASAN_OPTIONS "ERROR: expected '='"
Date: Thu, 28 Mar 2019 08:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89832
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Diane Meirowitz from comment #3)
> Thank you for fixing this so quickly! This is a huge improvement.
Be my guest!
>
> Here are some suggestions to make it even better for those without a lot of
> knowledge of ASAn. I think this will be the case for some people using it
> here at my employer, at least.
>
> 1. Can you add AddressSanitizer to the error message?
>
> 2. It would help to say "environment variable ASAN_OPTIONS", rather than
> "ASAN_OPTIONS".
I've done that, please take a look:
https://reviews.llvm.org/D59876
>From gcc-bugs-return-638796-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:45:52 2019
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Subject: [Bug bootstrap/89829] incorrect profile data is used during profiledbootstrap
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Mar 28 08:44:44 2019
New Revision: 269985
URL: https://gcc.gnu.org/viewcvs?rev=269985&root=gcc&view=rev
Log:
Revert r254150 (PR bootstrap/89829).
2019-03-28 Martin Liska <mliska@suse.cz>
PR bootstrap/89829
* Makefile.in: Revert r254150.
* Makefile.tpl: Likewise.
Modified:
trunk/ChangeLog
trunk/Makefile.in
trunk/Makefile.tpl
>From gcc-bugs-return-638797-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:49:58 2019
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Subject: [Bug bootstrap/89829] incorrect profile data is used during profiledbootstrap
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Should be fixed now.
>From gcc-bugs-return-638798-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 08:52:21 2019
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Subject: [Bug web/87829] Contradiction about -fReorder-Blocks
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Mar 28 08:51:46 2019
New Revision: 269986
URL: https://gcc.gnu.org/viewcvs?rev=269986&root=gcc&view=rev
Log:
Backport r265786
2019-03-28 Martin Liska <mliska@suse.cz>
Backport from mainline
2018-11-05 Martin Liska <mliska@suse.cz>
PR web/87829
* doc/invoke.texi: Remove options that are
not disabled with -Os.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/doc/invoke.texi
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Subject: [Bug web/87829] Contradiction about -fReorder-Blocks
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Mar 28 08:53:49 2019
New Revision: 269987
URL: https://gcc.gnu.org/viewcvs?rev=269987&root=gcc&view=rev
Log:
Backport r265786
2019-03-28 Martin Liska <mliska@suse.cz>
Backport from mainline
2018-11-05 Martin Liska <mliska@suse.cz>
PR web/87829
* doc/invoke.texi: Remove options that are
not disabled with -Os.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/doc/invoke.texi
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Known to work| |7.4.1, 8.3.1, 9.0
Resolution|--- |FIXED
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on all active branches.
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Subject: [Bug target/89865] New: [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89865
Bug ID: 89865
Summary: [9 Regression] FAIL: gcc.target/i386/pr49095.c
scan-assembler-times \\\\), % 45
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
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There are two issues at play that interfere with expected number of
scan-assembler-times expression. Please consider this testcase, simplified from
gcc.target/i386/pr49095.c:
char *
hcharplus (char *x)
{
*x += 24;
if (!*x)
foo (x);
return x;
}
current gcc trunk generates (-Os -fno-shrink-wrap -mregparm=2 -m32):
hcharplus:
pushl %ebp
movl %esp, %ebp
subl $24, %esp
movb (%eax), %cl
leal 24(%ecx), %edx
movb %dl, (%eax)
testb %dl, %dl
jne .L7
movl %eax, -12(%ebp)
call foo
movl -12(%ebp), %eax
.L7:
leave
ret
Please note the sequence:
movb (%eax), %cl
leal 24(%ecx), %edx
movb %dl, (%eax)
testb %dl, %dl
which is expected to be handled by the following peephole2 pattern:
;; Likewise for instances where we have a lea pattern.
(define_peephole2
[(set (match_operand:SWI 0 "register_operand")
(match_operand:SWI 1 "memory_operand"))
(set (match_operand:SWI 3 "register_operand")
(plus:SWI (match_dup 0)
(match_operand:SWI 2 "<nonmemory_operand>")))
(set (match_dup 1) (match_dup 3))
(set (reg FLAGS_REG) (compare (match_dup 3) (const_int 0)))]
"(TARGET_READ_MODIFY_WRITE || optimize_insn_for_size_p ())
&& peep2_reg_dead_p (4, operands[3])
&& (rtx_equal_p (operands[0], operands[3])
|| peep2_reg_dead_p (2, operands[0]))
&& !reg_overlap_mentioned_p (operands[0], operands[1])
&& !reg_overlap_mentioned_p (operands[3], operands[1])
&& !reg_overlap_mentioned_p (operands[0], operands[2])
&& (<MODE>mode != QImode
|| immediate_operand (operands[2], QImode)
|| any_QIreg_operand (operands[2], QImode))
&& ix86_match_ccmode (peep2_next_insn (3), CCGOCmode)"
[(parallel [(set (match_dup 4) (match_dup 6))
(set (match_dup 1) (match_dup 5))])]
{
operands[4] = SET_DEST (PATTERN (peep2_next_insn (3)));
operands[5]
= gen_rtx_PLUS (<MODE>mode,
copy_rtx (operands[1]),
operands[2]);
operands[6]
= gen_rtx_COMPARE (GET_MODE (operands[4]),
copy_rtx (operands[5]),
const0_rtx);
})
However, the above pattern does not look for correct mode of the LEA insn and
doesn't take into account that input and output register can differ for LEA.
We have the following sequence before peephole2 pass:
(insn 25 6 28 2 (set (reg:QI 2 cx [91])
(mem:QI (reg/v/f:SI 0 ax [orig:87 x ] [87]) [0 *x_7(D)+0 S1 A8]))
"ra.c":24:6 69 {*movqi_internal}
(nil))
(insn 28 25 8 2 (set (reg:SI 1 dx [orig:85 _4 ] [85])
(plus:SI (reg:SI 2 cx [91])
(const_int 24 [0x18]))) "ra.c":24:6 186 {*leasi}
(expr_list:REG_DEAD (reg:SI 2 cx [91])
(nil)))
(insn 8 28 9 2 (set (mem:QI (reg/v/f:SI 0 ax [orig:87 x ] [87]) [0 *x_7(D)+0 S1
A8])
(reg:QI 1 dx [orig:85 _4 ] [85])) "ra.c":24:6 69 {*movqi_internal}
(nil))
(insn 9 8 10 2 (set (reg:CCZ 17 flags)
(compare:CCZ (reg:QI 1 dx [orig:85 _4 ] [85])
(const_int 0 [0]))) "ra.c":25:6 5 {*cmpqi_ccno_1}
(expr_list:REG_DEAD (reg:QI 1 dx [orig:85 _4 ] [85])
(nil)))
From the above sequence, it can be seen that the mode of LEA insn in the
peephole2 pattern should use LEAMODE mode attribute instead of SWI mode
iterator. Also, the regno of (insn 28) output reg should only match the regno
of the output of (insn 25), with regno of (insn 28) matching regno of (insn 8)
and (insn 9).
The other issue with pr49095.c test is, that we now spill call-used register
around the call:
movl %eax, -12(%ebp)
call foo
movl -12(%ebp), %eax
where gcc-8 used call-preserved register to save the value around the call:
movl %eax, %ebx
call foo
movl %ebx, %eax
However, the above approach requires call-preserved register %ebx to be saved
in the callee function, so the new approach saves a push/pop pair. In any case,
the new assembly changes the result of the scan-assembler-times dg directive,
as
movl -12(%ebp), %eax
triggers the scan-assembler-times regexp.
>From gcc-bugs-return-638802-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:19:59 2019
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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89862] LTO bootstrap fails for ARM
Date: Thu, 28 Mar 2019 09:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89862
--- Comment #2 from kugan at gcc dot gnu.org ---
(In reply to Eric Botcazou from comment #1)
> Can you try this instead?
>
> Index: rtl.h
> ===================================================================
> --- rtl.h (revision 269886)
> +++ rtl.h (working copy)
> @@ -4401,6 +4401,7 @@ word_register_operation_p (const_rtx x)
> {
> switch (GET_CODE (x))
> {
> + case CONST_INT:
> case ROTATE:
> case ROTATERT:
> case SIGN_EXTRACT:
Thanks for looking into it. Disallowing all the CONST_INT works for me. I have
verified that lto-bootstrap works with the above changes. I will test for
regression and post it to gcc-patches.
>From gcc-bugs-return-638803-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:38:44 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 09:38:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernds at gcc dot gnu.org
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
CC author.
>From gcc-bugs-return-638804-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:39:42 2019
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From: "laurent.pointal at laposte dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89866] New: POINTER
Date: Thu, 28 Mar 2019 09:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89866
Bug ID: 89866
Summary: POINTER
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: laurent.pointal at laposte dot net
Target Milestone: ---
Created attachment 46041
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46041&action=edit
Test case with pointer to 1D array
In gfortran 8.3, one dimension array of integers, passed as pointer argument,
incorrectly managed when accessing content (only access first item).
Same code of InRef_i4_1d() function (see attachement) compiled with gfortran
7.3 and gfortran 8.3 provides different output, with a bug in gfortran 8.3:
----- Compilation with:
GNU Fortran (GCC) 8.3.0
----- Test:
InRef_i4_1d item 1: inrefint1d = [1 1 1 1 1 1 1 1 1 1 ]
1
1
1
1
1
1
1
1
1
1
----- Compilation with:
GNU Fortran (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
----- Test:
InRef_i4_1d item 1: inrefint1d = [1 2 3 4 5 6 7 8 9 10 ]
1
2
3
4
5
6
7
8
9
10
Note: attachement has been extracted from larger code to show the problem.
A+
L.Pointal.
>From gcc-bugs-return-638805-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:40:22 2019
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From: "laurent.pointal at laposte dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89866] POINTER
Date: Thu, 28 Mar 2019 09:40:00 -0000
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--- Comment #1 from Laurent Pointal <laurent.pointal at laposte dot net> ---
Note: compiled with -std=f2008 option.
>From gcc-bugs-return-638806-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:47:41 2019
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Subject: [Bug libstdc++/89851] [9 Regression] std::variant comparison operators violate [variant.relops]
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target Milestone|--- |9.0
Summary|[Regression] std::variant |[9 Regression] std::variant
|comparison operators |comparison operators
|violate [variant.relops] |violate [variant.relops]
>From gcc-bugs-return-638807-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:54:44 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
Date: Thu, 28 Mar 2019 09:54:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
It looks like GMP selects a CPU path that is not supported. Can you run
the compile within gdb to get at the faultin assembly instruction?
>From gcc-bugs-return-638808-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 09:58:03 2019
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Subject: [Bug other/89860] liboffloadmic/runtime/offload_target.cpp:332]: (style) Array index 'i' is used before limits check.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89860
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
CC| |hjl.tools at gmail dot com
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. But the code is probably unmaintained - HJ, whose the Intel contact
to work on MIC (or is it time to rip out intelmic support given Knights-* is
dead?)
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Thu, 28 Mar 2019 10:00:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |build
Host|Darwin Kernel Version |x86_64-apple-darwin18.5.0
|18.5.0 |
Target Milestone|--- |9.0
Summary|[9.0 regression] gcc fails |[9 regression] gcc fails to
|to build/bootstrap with |build/bootstrap with XCode
|XCode 10.2 |10.2
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |iains at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
This looks like a darwin header issue - _Atomic isn't supported in C++.
Eventually this can be fixed by fix-including or by some hack in system.h
(knowing full contents of ucred.h).
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Subject: [Bug middle-end/64242] Longjmp expansion incorrect
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64242
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #23 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
*** Bug 89837 has been marked as a duplicate of this bug. ***
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Subject: [Bug middle-end/89837] __builtin_longjmp failure with instruction scheduling
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |ebotcazou at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The RISC-V port, with the just committed sifive-7-series support, with the
> restore_stack_nonlocal pattern disabled, fails
> gcc.c-torture/execute/pr64242.c at -O2 and higher.
This happens almost everywhere.
*** This bug has been marked as a duplicate of bug 64242 ***
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Subject: [Bug c++/89867] New: internal compiler error: in layout_type, at stor-layout.c:2578
Date: Thu, 28 Mar 2019 10:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89867
Bug ID: 89867
Summary: internal compiler error: in layout_type, at
stor-layout.c:2578
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: maxpag at gmail dot com
Target Milestone: ---
Created attachment 46042
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46042&action=edit
preprocessed source that causes the ICE
The error message is:
[CXX] Common/Sail/PlatformAgnostic/SailExec/Message.cc: In constructor
'SailExec::Message::Message(const uint8_t*)':
[CXX] Common/Sail/PlatformAgnostic/SailExec/Message.cc:67:51: internal compiler
error: in layout_type, at stor-layout.c:2578
[CXX] auto ownData __attribute__((__may_alias__)) =
reinterpret_cast<uint8_t*>(getDataRef());
[CXX] ^
[CXX] Please submit a full bug report,
[CXX] with preprocessed source if appropriate.
[CXX] See <https://gcc.gnu.org/bugs/> for instructions.
Compiler version as reported by the compiler:
arm-none-eabi-g++ -v
Using built-in specs.
COLLECT_GCC=arm-none-eabi-g++
COLLECT_LTO_WRAPPER=/opt/gcc-arm-none-eabi-8-2018-q4-major/bin/../lib/gcc/arm-none-eabi/8.2.1/lto-wrapper
Target: arm-none-eabi
Configured with:
/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/src/gcc/configure
--target=arm-none-eabi
--prefix=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native
--libexecdir=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native/lib
--infodir=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native/share/doc/gcc-arm-none-eabi/info
--mandir=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native/share/doc/gcc-arm-none-eabi/man
--htmldir=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native/share/doc/gcc-arm-none-eabi/html
--pdfdir=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native/share/doc/gcc-arm-none-eabi/pdf
--enable-languages=c,c++ --enable-plugins --disable-decimal-float
--disable-libffi --disable-libgomp --disable-libmudflap --disable-libquadmath
--disable-libssp --disable-libstdcxx-pch --disable-nls --disable-shared
--disable-threads --disable-tls --with-gnu-as --with-gnu-ld --with-newlib
--with-headers=yes --with-python-dir=share/gcc-arm-none-eabi
--with-sysroot=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/install-native/arm-none-eabi
--build=x86_64-linux-gnu --host=x86_64-linux-gnu
--with-gmp=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/build-native/host-libs/usr
--with-mpfr=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/build-native/host-libs/usr
--with-mpc=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/build-native/host-libs/usr
--with-isl=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/build-native/host-libs/usr
--with-libelf=/tmp/jenkins/jenkins-GCC-8-build_toolchain_docker-519_20181216_1544945247/build-native/host-libs/usr
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'
--with-pkgversion='GNU Tools for Arm Embedded Processors 8-2018-q4-major'
--with-multilib-list=rmprofile
Thread model: single
gcc version 8.2.1 20181213 (release) [gcc-8-branch revision 267074] (GNU Tools
for Arm Embedded Processors 8-2018-q4-major)
Compilation option to reproduce it:
arm-none-eabi-g++ -std=gnu++17 Message.ii
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 10:04:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug c++/89867] internal compiler error: in layout_type, at stor-layout.c:2578
Date: Thu, 28 Mar 2019 10:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-reduction
Target| |arm-none-eabi
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed with quite old trunk.
#2 0x00000000012b2916 in layout_type (type=0x7ffff547ebd0)
at /space/rguenther/src/svn/trunk2/gcc/stor-layout.c:2589
warning: Source file is more recent than executable.
2589 gcc_unreachable ();
(gdb) p type
$1 = (tree) 0x7ffff547ebd0
(gdb) p type->base.code
$2 = TEMPLATE_TYPE_PARM
#0 internal_error (gmsgid=0x23feb0f "in %s, at %s:%d")
at /space/rguenther/src/svn/trunk2/gcc/diagnostic.c:1536
#1 0x0000000001ee49e4 in fancy_abort (
file=0x20e6370 "/space/rguenther/src/svn/trunk2/gcc/stor-layout.c",
line=2589,
function=0x20e6c26 <layout_type(tree_node*)::__FUNCTION__> "layout_type")
at /space/rguenther/src/svn/trunk2/gcc/diagnostic.c:1607
#2 0x00000000012b2916 in layout_type (type=0x7ffff547ebd0)
at /space/rguenther/src/svn/trunk2/gcc/stor-layout.c:2589
#3 0x00000000016728ef in type_hash_canon (hashcode=721902123,
type=0x7ffff547ebd0) at /space/rguenther/src/svn/trunk2/gcc/tree.c:7004
#4 0x0000000000b7912f in build_type_attribute_qual_variant (
otype=0x7ffff547eb28, attribute=0x7ffff5478e60, quals=0)
at /space/rguenther/src/svn/trunk2/gcc/attribs.c:1157
#5 0x0000000000b7a23c in build_type_attribute_variant (ttype=0x7ffff547eb28,
attribute=0x7ffff5478e60)
at /space/rguenther/src/svn/trunk2/gcc/attribs.c:1369
#6 0x0000000000b7805e in decl_attributes (node=0x7fffffffd040,
attributes=0x7ffff5478e38, flags=0, last_decl=0x0)
at /space/rguenther/src/svn/trunk2/gcc/attribs.c:785
#7 0x0000000000953060 in cplus_decl_attributes (decl=0x7fffffffd040,
attributes=0x7ffff5478e38, flags=0)
at /space/rguenther/src/svn/trunk2/gcc/cp/decl2.c:1525
>From gcc-bugs-return-638816-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:11:01 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Thu, 28 Mar 2019 10:11:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
Ever confirmed|0 |1
--- Comment #2 from Iain Sandoe <iains at gcc dot gnu.org> ---
This has already been reported to Apple by Daniel Vollmer [noted in PR68771]
Short-term workaround is to use an earlier SDK (agreed we can fix includes if
there's no quick resolution).
>From gcc-bugs-return-638817-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:17:37 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Thu, 28 Mar 2019 10:17:00 -0000
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--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #2)
> This has already been reported to Apple by Daniel Vollmer [noted in PR68771]
(of course, it will do no harm to have multiple radars filed, so go at it!)
>From gcc-bugs-return-638818-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:20:02 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89868] New: -fsanitizedress inhibits C++ unhandled exception core dump
Date: Thu, 28 Mar 2019 10:20:00 -0000
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Bug ID: 89868
Summary: -fsanitize=address inhibits C++ unhandled exception
core dump
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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Hi!
Noticed that -fsanitize=address appears to inhibit core dump from C++
exceptions. Is there a way to still get the core dump?
The address sanitizer does not catch unhandled C++ exceptions and show a
backtrace etc, but it does cause the core to not be dumped.
Regular compile without Address Sanitizer:
$ g++-8 -Wall -o exception exception.cpp
$ ./exception
terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check: __n (which is 0) >= this->size()
(which is 0)
Aborted (core dumped)
$
#include <vector>
int main()
{
std::vector<int> v;
return v.at(0);
}
With sanitizer:
$ g++-8 -fsanitize=address -Wall -o exception exception.cpp
$ ./exception
terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check: __n (which is 0) >= this->size() (which is
0)
Aborted
$
>From gcc-bugs-return-638819-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:25:03 2019
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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--- Comment #10 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
(In reply to kugan from comment #9)
> Created attachment 46040 [details]
> patch
Wasn't sure whether this patch was WIP or the final version
for review, but we need to do something more generic than
dividing by 4. I think the test will still fail with "int"
changed to "short" for example.
I also don't think the new candidate should be tied to the
mask/load store functions. Maybe one approach would be to
check when adding a zero-based candidate for a use in:
/* Record common candidate with initial value zero. */
basetype = TREE_TYPE (iv->base);
if (POINTER_TYPE_P (basetype))
basetype = sizetype;
record_common_cand (data, build_int_cst (basetype, 0), iv->step, use);
whether the use actually benefits from this unscaled iv.
If the use is USE_REF_ADDRESS, we could compare the cost
of an address with an unscaled index with the cost of an address
with a scaled index. I think the natural scale value to try
would be GET_MODE_INNER (TYPE_MODE (mem_type)).
>From gcc-bugs-return-638820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:25:23 2019
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Subject: [Bug target/85968] gcc/config/arc/arc.c:9805: bad test ?
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--- Comment #4 from Claudiu Zissulescu <claziss at gmail dot com> ---
Yes we can close it, no need for backporting.
//Claudiu
>From gcc-bugs-return-638821-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:32:05 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #4 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Created attachment 46043
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46043&action=edit
Darwin header file ucred.h
As this seems to be of interest, I posted the Darwin XCode 10.2 header file
ucred.h
>From gcc-bugs-return-638822-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:42:09 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #5 from Jürgen Reuter <juergen.reuter at desy dot de> ---
My hunch is that it takes Apple too long to fix that issue, so a fix inside gcc
would be very much appreciated.
>From gcc-bugs-return-638823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 10:51:55 2019
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89866] [8 Regression] [F08] wrong-code problem with POINTER, INTENT(IN) argument
Date: Thu, 28 Mar 2019 10:51:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
CC| |janus at gcc dot gnu.org
Known to work| |5.5.0, 6.5.0, 7.3.0, 9.0
Blocks| |39627
Summary|POINTER |[8 Regression] [F08]
| |wrong-code problem with
| |POINTER, INTENT(IN)
| |argument
Ever confirmed|0 |1
Known to fail| |8.2.0
--- Comment #2 from janus at gcc dot gnu.org ---
I can confirm this problem. Reduced test case:
PROGRAM testfortran2
IMPLICIT NONE
INTEGER, DIMENSION(10), TARGET :: i4array
i4array = (/ 1,2,3,4,5,6,7,8,9,10 /)
call InRef(i4array)
CONTAINS
subroutine InRef(v)
INTEGER, DIMENSION(:), POINTER, INTENT(in) :: v
INTEGER :: i
DO i=1, SIZE(v,1)
WRITE(*,*) v(i)
END DO
END subroutine
END
This gives the correct output with all gfortran versions I tried (including
trunk and 7.3), except 8.2, which prints:
1
1
1
1
1
1
1
1
1
1
Note that the test case is invalid in Fortran 2003:
8 | call InRef(i4array)
| 1
Error: Fortran 2008: Non-pointer actual argument at (1) to pointer dummy ‘v’
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39627
[Bug 39627] [meta-bug] Fortran 2008 support
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Thu, 28 Mar 2019 10:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84101
--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fallout is:
FAIL: gcc.dg/pr85195.c (internal compiler error)
where we handle V1TI = {_2} with _2 = (__int128) int_1; this way and
end up calling convert_move from SImode to V1TImode (instead of TImode).
Looks like a pre-existing bug to me, not quickly sure where to fix.
FAIL: c-c++-common/torture/builtin-convertvector-1.c -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (internal compiler
error)
Similar issue, we end up in expand_fix to TImode from V4SFmode. The generic
tree code expanders in expand_expr_real_2 simply pass down target (here
to expand_fix). Not sure what constraints we have on target for expand_expr,
the docs just say "The value may be stored in TARGET if TARGET is nonzero.
TARGET is just a suggestion; callers must assume that the rtx returned may
not be the same as TARGET." and further down "Note that TARGET may have neither
TMODE nor MODE. In that case, it probably will not be used." So it looks
to me these high-level expanders need to be more careful in what they
pass to functions like expand_fix or convert_move.
FAIL: gfortran.dg/allocatable_function_8.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (internal compiler
error)
FAIL: gfortran.fortran-torture/execute/entry_4.f90, -O1 (internal compiler
error)
Same issue for expand_float.
That's all issues in the testsuite but with those it may look a little too
risky for GCC 9. At least it would solve the DImode pair issue which
might happen quite often in practice :/
The following guards the above three cases:
@@ -8543,7 +8560,9 @@ expand_expr_real_2 (sepops ops, rtx targ
op0 = gen_rtx_fmt_e (TYPE_UNSIGNED (TREE_TYPE (treeop0))
? ZERO_EXTEND : SIGN_EXTEND, mode, op0);
- else if (target == 0)
+ else if (target == 0
+ || (VECTOR_MODE_P (GET_MODE (target))
+ != VECTOR_MODE_P (GET_MODE (op0))))
op0 = convert_to_mode (mode, op0,
TYPE_UNSIGNED (TREE_TYPE
(treeop0)));
@@ -9019,14 +9038,20 @@ expand_expr_real_2 (sepops ops, rtx targ
case FIX_TRUNC_EXPR:
op0 = expand_normal (treeop0);
- if (target == 0 || modifier == EXPAND_STACK_PARM)
+ if (target == 0 || modifier == EXPAND_STACK_PARM
+ || (target
+ && (VECTOR_MODE_P (GET_MODE (target))
+ != VECTOR_MODE_P (GET_MODE (op0)))))
target = gen_reg_rtx (mode);
expand_fix (target, op0, unsignedp);
return target;
case FLOAT_EXPR:
op0 = expand_normal (treeop0);
- if (target == 0 || modifier == EXPAND_STACK_PARM)
+ if (target == 0 || modifier == EXPAND_STACK_PARM
+ || (target
+ && (VECTOR_MODE_P (GET_MODE (target))
+ != VECTOR_MODE_P (GET_MODE (op0)))))
target = gen_reg_rtx (mode);
/* expand_float can't figure out what to do if FROM has VOIDmode.
So give it the correct mode. With -O, cse will optimize this. */
but then the testcases run into other similar issues all through RTL
expansion :/
>From gcc-bugs-return-638825-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 11:08:56 2019
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Subject: [Bug target/89795] [7/8/9 Regression] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
Date: Thu, 28 Mar 2019 11:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89795
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
So the combiner first eliminates a ZERO_EXTEND between 2 instructions as
redundant, which is OK in isolation, but IRA (combine_and_move_insns) later
combines again the same 2 instructions without using the
WORD_REGISTER_OPERATIONS semantics of the combiner.
This mini-combine pass in IRA isn't always run:
/* Don't move insns if live range shrinkage or register
pressure-sensitive scheduling were done because it will not
improve allocation but likely worsen insn scheduling. */
if (optimize
&& !flag_live_range_shrinkage
&& !(flag_sched_pressure && flag_schedule_insns))
combine_and_move_insns ();
which explains the need to -fno-sched-pressure on the ARM.
>From gcc-bugs-return-638826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 11:09:25 2019
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
Date: Thu, 28 Mar 2019 11:09:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
It's exactly the same underlying issue: the combiner first eliminates an AND
(or an equivalent ZERO_EXTEND) between 2 instructions as redundant, which is OK
in isolation, but IRA (combine_and_move_insns) later combines again the same 2
instructions without using the WORD_REGISTER_OPERATIONS semantics used in the
combiner.
*** This bug has been marked as a duplicate of bug 89795 ***
>From gcc-bugs-return-638827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 11:09:27 2019
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Subject: [Bug target/89795] [7/8/9 Regression] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
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--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
*** Bug 89435 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638828-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 11:21:50 2019
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Subject: [Bug target/89795] [7/8/9 Regression] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
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--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
It's also related to PR rtl-opt/89862 because it's ultimately the synthesis of
an integer constant in a register, which is not a word_register_operation_p,
but here it's indirectly done by the mini-combiner in IRA thanks to the right
combination of -fno-* options that prevents it from being done earlier as in
most cases.
>From gcc-bugs-return-638829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 11:39:08 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89868] -fsanitizedress inhibits C++ unhandled exception core dump
Date: Thu, 28 Mar 2019 11:39:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I suspect the problem is that Asan makes the address space much much larger,
and so the core file is larger than the max core file size allowed on your
system.
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
Date: Thu, 28 Mar 2019 11:43:00 -0000
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--- Comment #24 from Daniel Vollmer <zerolo at gmail dot com> ---
(In reply to Iain Sandoe from comment #23)
> My freshly-built 7.4 (bootstrapped with 10.1 xc effectively) doesn't
> reproduce it, neither do any other branches I have lying around - so we're
> not there yet.
>
> I take it that the full code does fail with 8.3?
The full example fails with both the homebrew built 8.3, but also the freshly
compiled (on 10.14.4) 7.4.0, so I guess my smaller example is not (as)
representative as I'd hoped.
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68771
--- Comment #25 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #24)
> (In reply to Iain Sandoe from comment #23)
>
> > My freshly-built 7.4 (bootstrapped with 10.1 xc effectively) doesn't
> > reproduce it, neither do any other branches I have lying around - so we're
> > not there yet.
> >
> > I take it that the full code does fail with 8.3?
>
> The full example fails with both the homebrew built 8.3, but also the
> freshly compiled (on 10.14.4) 7.4.0, so I guess my smaller example is not
> (as) representative as I'd hoped.
Sadly, without a reproducer, it's hard to make progress - possibly more complex
control flow is needed - multiple function?
>From gcc-bugs-return-638832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 12:15:38 2019
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Thu, 28 Mar 2019 12:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84101
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #43287|0 |1
is obsolete| |
--- Comment #24 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 46044
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46044&action=edit
updated vectorizer patch
I've updated the vectorizer patch that was posted to the mailing list last
year.
I changed it to also apply to the non-SLP case and instead of looking for a
non-vector-mode return RTX (which would pessimize word_mode vectorization)
look at hard_regno_nregs and only pessimize multi-reg return locations.
I've removed CONCAT and PARALLEL handling with PARALLEL left as todo
(not sure what to do there, I'd need to have a target / testcase combo
to look at - I suppose if any of the return locations is "compatible"
with the vector result we want to not pessimize).
>From gcc-bugs-return-638833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 12:23:15 2019
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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
Date: Thu, 28 Mar 2019 12:23:00 -0000
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--- Comment #11 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Removing the alias check seems correct to me. The same body alias patch was
long and needed special casing those aliases on quite few places. I am not at
all sure why I added this one, but it definitly silences the diagnostics
completely that is wrong.
>From gcc-bugs-return-638834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 12:38:35 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 12:38:00 -0000
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--- Comment #2 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Jakub seems to be the author of gcc.target/i386/pr49095.c.
>From gcc-bugs-return-638835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 12:47:46 2019
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Subject: [Bug c++/33715] Suggest -Wmemleak warning for C++
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
But a warning that says "this resource might be leaked, you should add
try-catch to clean it up" would be suggesting awful code that goes against all
good design guidance.
A more useful warning would be to warn "about local variables assigned via
operator new or operator new[]" period. Forget the "but then are not freed in
an exception handling clause in case of an exception" part completely.
We should not be adding warnings to say "fix this fragile, manual memory
mangement code by adding fragile, manual error handling code".
https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#r11-avoid-calling-new-and-delete-explicitly
https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#r12-immediately-give-the-result-of-an-explicit-resource-allocation-to-a-manager-object
https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#r20-use-unique_ptr-or-shared_ptr-to-represent-ownership
>From gcc-bugs-return-638836-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 12:50:51 2019
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Subject: [Bug c++/89868] -fsanitizedress inhibits C++ unhandled exception core dump
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--- Comment #2 from Jonny Grant <jg at jguk dot org> ---
Ah that sounds possible. I imagine it is not GCC that would be the one that
controls the core dumping? Perhaps where ever that code is, it could just say
"Core too large (xyz MB) unable to dump".
>From gcc-bugs-return-638837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 12:52:47 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
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--- Comment #4 from Hans Buchmann <hans.buchmann at fhnw dot ch> ---
Created attachment 46045
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46045&action=edit
The gbd output
With the help of our sysadmin Peter Schlachter we managed the following output,
hopefully helpful for you.
Sincerely
Hans Buchmann
>From gcc-bugs-return-638838-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:11:06 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not very helpful - you need follow the fork to the actual compiler binary.
The easiest way to do this is to run the compiler with -v appended
and the cut&paste the line where it executes the cc1plus binary and run that
inside the debugger. It should look somewhat like
/usr/lib64/gcc/x86_64-suse-linux/4.8/cc1plus -quiet -v -D_GNU_SOURCE t.c
-quiet -dumpbase t.c -mtune=generic -march=x86-64 -auxbase t -version -o
/tmp/ccbh6DsK.s
and you then do
> gdb --args usr/lib64/gcc/x86_64-suse-linux/4.8/cc1plus -quiet -v -D_GNU_SOURCE t.c -quiet -dumpbase t.c -mtune=generic -march=x86-64 -auxbase t -version -o /tmp/ccbh6DsK.s
...
(gdb) run
...
Illegal Instruction
(gdb) disassemble
cut&paste the context around the PC marker ==>
>From gcc-bugs-return-638840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:28:31 2019
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Subject: [Bug middle-end/89621] [7/8/9 Regression] ICE with allocatable character and openmp
Date: Thu, 28 Mar 2019 13:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46047
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gcc9-pr89621.patch
Untested fix.
>From gcc-bugs-return-638839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:28:13 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 13:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89865
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-28
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 46046
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46046&action=edit
Patch to fix LEA matching problem
Untested patch that fixes LEA matching.
>From gcc-bugs-return-638841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:29:10 2019
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Subject: =?UTF-8?B?W0J1ZyBkcml2ZXIvODk4NjFdIGcrKy04OiBlcnJvcjogdW5yZWNvZ25pemVk?= =?UTF-8?B?IGNvbW1hbmQgbGluZSBvcHRpb24g4oCYLWZzYW5pdGl6ZeKAmQ==?Date: Thu, 28 Mar 2019 13:29:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Lemme take a look.
>From gcc-bugs-return-638842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:29:30 2019
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From: "diane2332 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89832] confusing error message when there is a problem with ASAN_OPTIONS "ERROR: expected '='"
Date: Thu, 28 Mar 2019 13:29:00 -0000
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--- Comment #5 from Diane Meirowitz <diane2332 at gmail dot com> ---
Yes, much better!
Again, thank you for fixing this so quickly and completely!
>From gcc-bugs-return-638843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:36:52 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/79022] trunk/gcc/gengtype.h: create_nested_ptr_option: decl & defn don't match ?
Date: Thu, 28 Mar 2019 13:36:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Adding a warning about this case seems genuinely useful, i.e. when the names
match but in a different order.
I'm less convinced that warning about mismatches like void f(int number) and
void f(int num) is useful, as it would just be noise in many cases.
>From gcc-bugs-return-638844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:37:35 2019
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From: "joerg.richter@pdv-fs.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89869] New: -fsanitize=undefined miscompilation
Date: Thu, 28 Mar 2019 13:37:00 -0000
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Bug ID: 89869
Summary: -fsanitize=undefined miscompilation
Product: gcc
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cat > t.cc <<EOF
struct Object
{
Object* first_ = 0;
Object* last_ = 0;
Object* next_ = 0;
Object* prev_ = 0;
virtual ~Object() {}
};
void unlinkChild( Object* parent, Object* child )
{
( child->prev_ ? child->prev_->next_ : parent->first_ ) = child->next_;
( child->next_ ? child->next_->prev_ : parent->last_ ) = child->prev_;
}
int main( int argc, char** argv)
{
Object a;
Object b;
unlinkChild( &a, &b );
return 0;
}
EOF
g++ -o t t.cc -Wmaybe-uninitialized -fsanitize=undefined
t
Gives this:
t.cc: In function 'void unlinkChild(Object*, Object*)':
t.cc:13:68: warning: 'child.1' may be used uninitialized in this function
[-Wmaybe-uninitialized]
( child->prev_ ? child->prev_->next_ : parent->first_ ) = child->next_;
~~~~~~~^~~~~
t.cc:14:67: warning: 'child.5' may be used uninitialized in this function
[-Wmaybe-uninitialized]
( child->next_ ? child->next_->prev_ : parent->last_ ) = child->prev_;
~~~~~~~^~~~~
t.cc:13:68: runtime error: member access within address 0x000000400710 which
does not point to an object of type 'Object'
0x000000400710: note: object has invalid vptr
a0 ff ff ff 31 ed 49 89 d1 5e 48 89 e2 48 83 e4 f0 50 54 49 c7 c0 70 15 40
00 48 c7 c1 80 15 40
^~~~~~~~~~~~~~~~~~~~~~~
invalid vptr
t.cc:14:67: runtime error: member access within address 0x7fff38bf5fa0 which
does not point to an object of type 'Object'
0x7fff38bf5fa0: note: object has invalid vptr
00 00 00 00 01 00 00 00 00 00 00 00 89 63 bf 38 ff 7f 00 00 00 00 00 00 00
00 00 00 8b 63 bf 38
^~~~~~~~~~~~~~~~~~~~~~~
invalid vptr
There is no compiler warning or runtime error without -fsanitize=undefined.
This was reduced from a much larger testcase where a pointer value was set to
zero by the -fsanitize=undefined code leading to wrong results.
>From gcc-bugs-return-638845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:42:58 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/79022] trunk/gcc/gengtype.h: create_nested_ptr_option: decl & defn don't match ?
Date: Thu, 28 Mar 2019 13:42:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-638846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:43:24 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/79022] trunk/gcc/gengtype.h: create_nested_ptr_option: decl & defn don't match ?
Date: Thu, 28 Mar 2019 13:43:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Mar 28 13:42:48 2019
New Revision: 269990
URL: https://gcc.gnu.org/viewcvs?rev=269990&root=gcc&view=rev
Log:
PR c/79022 fix mismatch parameter order in declaratio
The declaration of create_nested_ptr_option in the header has the 'from'
and 'to' parameters in the opposite order from the definition in
gengtype.c:
/* Return an options structure for a "nested_ptr" option. */
options_p
create_nested_ptr_option (options_p next, type_p t,
const char *to, const char *from)
and the only caller in gengtype-parse.c:
return create_nested_ptr_option (prev, ty, to, from);
This patch swaps the parameter names in the declaration.
PR c/79022
* gengtype.h (create_nested_ptr_option): Fix parameter names to match
definition.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gengtype.h
>From gcc-bugs-return-638847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 13:54:14 2019
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Thu, 28 Mar 2019 13:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-638848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 14:09:25 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
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--- Comment #6 from Hans Buchmann <hans.buchmann at fhnw dot ch> ---
Created attachment 46048
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46048&action=edit
Disassemly
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Thu, 28 Mar 2019 14:13:00 -0000
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch for the first part:
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01362.html
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Thu, 28 Mar 2019 14:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amker at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the issue is that the DDR is bogus - loop interchange computes
data-refs
for a deeper nest (including some outer loops) than it ends up doing
dependence checking later on. But we have access functions analyzed with
respect to outer loops already.
I think it would be possible to handle this in data dependence computation,
simply treating evolutions in outer loops as invariants. Eventually the
access functions evolving in outer loops can also be pruned? We can't
really undo SCEV analysis on them.
I think that Jakubs fix is too conservative though.
Since we fail when we cannot compute the "invalid" subscript distance at the
moment the safest fix would probably to create the DDR with the loop-nest
we originally analyzed? Bin?
diff --git a/gcc/gimple-loop-interchange.cc b/gcc/gimple-loop-interchange.cc
index bb01a9b0d40..1f9b0c900d4 100644
--- a/gcc/gimple-loop-interchange.cc
+++ b/gcc/gimple-loop-interchange.cc
@@ -1995,6 +1995,7 @@ prepare_perfect_loop_nest (struct loop *loop, vec<loop_p>
*loop_nest,
/* Prepare the data reference vector for the loop nest, pruning outer
loops we cannot handle. */
+ struct loop *dr_loop = start_loop;
start_loop = prepare_data_references (start_loop, datarefs);
if (!start_loop
/* Check if there is no data reference. */
@@ -2022,7 +2023,7 @@ prepare_perfect_loop_nest (struct loop *loop, vec<loop_p>
*loop_nest,
if (loop != start_loop)
prune_datarefs_not_in_loop (start_loop, *datarefs);
- if (find_loop_nest (start_loop, loop_nest)
+ if (find_loop_nest (dr_loop, loop_nest)
&& tree_loop_interchange_compute_ddrs (*loop_nest, *datarefs, ddrs))
{
if (dump_file && (dump_flags & TDF_DETAILS))
With the following the ICE reproduces for me on x86_64-linux with
just -O2 -floop-interchange -fno-tree-dce
diff --git a/gcc/tree-data-ref.h b/gcc/tree-data-ref.h
index 11aa806a64d..54651e903ff 100644
--- a/gcc/tree-data-ref.h
+++ b/gcc/tree-data-ref.h
@@ -585,6 +585,7 @@ index_in_loop_nest (int var, vec<loop_p> loop_nest)
if (loopi->num == var)
break;
+ gcc_assert (var_index < loop_nest.length ());
return var_index;
}
>From gcc-bugs-return-638851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 14:24:46 2019
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Subject: [Bug c++/89870] New: C++ suggest header for abort()
Date: Thu, 28 Mar 2019 14:24:00 -0000
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Bug ID: 89870
Summary: C++ suggest header for abort()
Product: gcc
Version: 9.0
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trunk gcc can suggest the missing #include <stdlib.h> header if the following
code is compiled as C.
trunk g++ does not suggest missing #include <cstdlib> (C++ style) header in
the following code compiled as C++.
Can the C++ header suggestion pick this up somehow?
int main()
{
abort();
}
Tested on godbolt trunk today
[C++]
#1 with x86-64 gcc (trunk)
<source>: In function 'int main()':
<source>:3:5: error: 'abort' was not declared in this scope
3 | abort();
| ^~~~~
Compiler returned: 1
[C]
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:3:5: warning: implicit declaration of function 'abort'
[-Wimplicit-function-declaration]
3 | abort();
| ^~~~~
<source>:3:5: warning: incompatible implicit declaration of built-in function
'abort'
<source>:1:1: note: include '<stdlib.h>' or provide a declaration of 'abort'
+++ |+#include <stdlib.h>
1 | int main()
Compiler returned: 0
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Subject: [Bug fortran/52994] [OOP] [F08] internal compiler error: in gfc_trans_assignment_1, at fortran/trans-expr.c:6881
Date: Thu, 28 Mar 2019 14:31:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
--- Comment #14 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #13)
> > FYI : On my environment it's not possible to produce an ICE with gcc-9
> > and several tested combinations of options / all tested configurations.
Confirmed, the ICE is gone since gfortran 6.
> > $ gfortran-9-20181021 -c pr52994.f90
> > pr52994.f90:43:29:
> >
> > 43 | a%left_halo(psi%arr) = -666
> > | 1
> > Error: Different types in pointer assignment at (1); attempted assignment
> > of REAL(4) to INTEGER(4)
>
> Note that I am surprised by the order of REAL(4) and INTEGER(4): AFAICT
> a%left_halo(psi%arr) is real and -666 an integer, isn't it?
The bigger problem is that the mentioned statement is not actually a pointer
assignment. left_halo returns a pointer, but the assignment concerns the target
of that pointer, not the pointer itself.
When changing to a real value, I get:
32 | a%left_halo(arr) = -666.
| 1
Error: Different ranks in pointer assignment at (1)
Also this error is bogus. The assignment is valid AFAICS.
>From gcc-bugs-return-638853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 14:36:06 2019
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Subject: [Bug libstdc++/88066] [7 Regression] Relative includes in bits/locale_conv.h should be prefixed
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Matthias Kretz <kretz at kde dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kretz at kde dot org
--- Comment #9 from Matthias Kretz <kretz at kde dot org> ---
Created attachment 46049
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46049&action=edit
test case
Let me present the counterargument. I.e. if I use -I. and have a file named as
used internally by libstdc++, compilation breaks. Nothing in the C++ standard
forbids to create a bits/stl_vector.h file in my source tree, right? *evil
grin*
I'm a vocal fighter for "" includes... ;-)
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
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--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Mar 28 14:40:56 2019
New Revision: 269994
URL: https://gcc.gnu.org/viewcvs?rev=269994&root=gcc&view=rev
Log:
optinfo-emit-json.cc: don't call get_fnname_from_decl (PR middle-end/89725)
optrecord_json_writer::optinfo_to_json can in theory be called from any
optimization pass, but currently uses get_fnname_from_decl, which
is RTL-specific.
In that PR, Jakub suggested using either DECL_ASSEMBLER_NAME or the
"printable name" (via current_function_name).
This patch makes it use DECL_ASSEMBLER_NAME.
gcc/ChangeLog:
PR middle-end/89725
* optinfo-emit-json.cc (optrecord_json_writer::optinfo_to_json):
Use DECL_ASSEMBLER_NAME rather than get_fnname_from_decl.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/optinfo-emit-json.cc
>From gcc-bugs-return-638855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 14:42:33 2019
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Subject: [Bug libstdc++/88066] [7 Regression] Relative includes in bits/locale_conv.h should be prefixed
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Matthias Kretz from comment #9)
> Created attachment 46049 [details]
> test case
>
> Let me present the counterargument. I.e. if I use -I. and have a file named
> as used internally by libstdc++, compilation breaks. Nothing in the C++
> standard forbids to create a bits/stl_vector.h file in my source tree,
> right? *evil grin*
Right, and I don't think we can even use <__bits/stl_vector.h> because I don't
think reserved names apply to headers.
> I'm a vocal fighter for "" includes... ;-)
Yes, I wasn't happy about this change. I think -I- is an annoyance (and not
supported by other gcc-like compilers anyway).
>From gcc-bugs-return-638856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 14:47:03 2019
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Subject: [Bug c++/89870] C++ suggest header for abort()
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #0)
> trunk g++ does not suggest missing #include <cstdlib> (C++ style) header in
> the following code compiled as C++.
Good, because you called it unqualified and there's no using-directive or
using-declaration to make it visible. The correct header for that example is
<stdlib.h>.
>From gcc-bugs-return-638857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 14:48:54 2019
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
Date: Thu, 28 Mar 2019 14:48:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 28 14:47:47 2019
New Revision: 269995
URL: https://gcc.gnu.org/viewcvs?rev=269995&root=gcc&view=rev
Log:
PR c++/89785
* constexpr.c (struct check_for_return_continue_data): New type.
(check_for_return_continue): New function.
(potential_constant_expression_1) <case SWITCH_STMT>: Walk
SWITCH_STMT_BODY to find RETURN_EXPRs or CONTINUE_STMTs not nested
in loop bodies and set *jump_target to that if found.
* g++.dg/cpp1y/constexpr-89785-1.C: New test.
* g++.dg/cpp1y/constexpr-89785-2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89785-1.C
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89785-2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 15:02:32 2019
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Subject: [Bug c++/89870] C++ suggest header for abort()
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--- Comment #2 from Jonny Grant <jg at jguk dot org> ---
Good point!
Any header would be a good start... but as it is a CPP file being compiled by
g++ perhaps g++ should even suggest std::abort() and <cstdlib> ?
eg suggestion:
test.cpp: In function 'int main()':
test.cpp:3:5: error: 'abort' was not declared in this scope
3 | abort();
| ^~~~~
note: did you mean std::abort?
note: include '<cstdlib>' or provide a declaration of 'abort'
+++ |+#include <cstdlib>
>From gcc-bugs-return-638859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 15:14:04 2019
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Subject: [Bug c++/89870] C++ suggest header for abort()
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #2)
> Good point!
>
> Any header would be a good start... but as it is a CPP file being compiled
> by g++ perhaps g++ should even suggest std::abort() and <cstdlib> ?
That's a matter of taste, not correctness or questionable code. There's nothing
wrong with including <stdlib.h> and using ::abort.
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Subject: [Bug target/85968] gcc/config/arc/arc.c:9805: bad test ?
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Claudiu Zissulescu from comment #4)
> Yes we can close it, no need for backporting.
>
> //Claudiu
OK cool.
>From gcc-bugs-return-638861-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 15:27:44 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
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--- Comment #26 from Daniel Vollmer <zerolo at gmail dot com> ---
(In reply to Iain Sandoe from comment #25)
> (In reply to Daniel Vollmer from comment #24)
> > (In reply to Iain Sandoe from comment #23)
> >
> > > My freshly-built 7.4 (bootstrapped with 10.1 xc effectively) doesn't
> > > reproduce it, neither do any other branches I have lying around - so we're
> > > not there yet.
> > >
> > > I take it that the full code does fail with 8.3?
> >
> > The full example fails with both the homebrew built 8.3, but also the
> > freshly compiled (on 10.14.4) 7.4.0, so I guess my smaller example is not
> > (as) representative as I'd hoped.
>
> Sadly, without a reproducer, it's hard to make progress - possibly more
> complex control flow is needed - multiple function?
I've tried but not managed a simple reproducer yet.
The "real" code definitely has more complex control flow, but is also in a
shared-library that is in turn exposed / used by a Python extension.
>From gcc-bugs-return-638862-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 15:31:37 2019
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Subject: [Bug c/79022] trunk/gcc/gengtype.h: create_nested_ptr_option: decl & defn don't match ?
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Blocks| |89863
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #3)
> Adding a warning about this case seems genuinely useful, i.e. when the names
> match but in a different order.
>
So, since this is closed, I guess someoneâ„¢ should open a separate bug for that
part?
> I'm less convinced that warning about mismatches like void f(int number) and
> void f(int num) is useful, as it would just be noise in many cases.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
[Bug 89863] [meta-bug] Issues that cppcheck finds that gcc misses
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Bug 55004 depends on bug 89785, which changed state.
Bug 89785 Summary: Incorrect "not a constant expression" error with switch statement that returns
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89785
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9.1+.
>From gcc-bugs-return-638865-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 15:39:02 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't see the testcase FAILing on i?86 though, just on x86_64, and there
starting with Oct 2x (20th is still ok, 23rd fails, so likely r265398).
Let me have a look.
>From gcc-bugs-return-638866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 15:40:29 2019
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Subject: [Bug debug/68771] Darwin: PGO + LTO + multiple threads creates corrupted profile info.
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--- Comment #27 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #26)
> (In reply to Iain Sandoe from comment #25)
> > (In reply to Daniel Vollmer from comment #24)
> > > (In reply to Iain Sandoe from comment #23)
> > Sadly, without a reproducer, it's hard to make progress - possibly more
> > complex control flow is needed - multiple function?
>
> I've tried but not managed a simple reproducer yet.
> The "real" code definitely has more complex control flow, but is also in a
> shared-library that is in turn exposed / used by a Python extension.
So when you profile this, you have to profile it underneath Python?
i.e. you have no way to exercise the library's API to train it?
rather a lot of moving parts to nail down if it's the former.
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #4)
> I don't see the testcase FAILing on i?86 though, just on x86_64, and there
> starting with Oct 2x (20th is still ok, 23rd fails, so likely r265398).
The testcase is very brittle, there certainly is the difference between gcc-8.4
and gcc-9.0 in generated code for 32bit target (as reported in Comment #0),
apparently undetected by the scan directives. That said, the testcase will
easily fail with a compiler using non-default target [1] or compile flags.
[1] https://gcc.gnu.org/ml/gcc-testresults/2019-03/msg03664.html
>From gcc-bugs-return-638868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 16:13:32 2019
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Subject: [Bug c++/77875] C++ core issue 1288
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Doesn't this depend on the resolution of Core 1521 (still "drafting"), dealing
with T{expr} where T is a reference type? Which is what this PR is about:
void
f ()
{
int i = 42;
using T = int&;
T t = T{i};
}
>From gcc-bugs-return-638869-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 16:22:40 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, but that is only because r264897 adjusted the expected counts from 8 to
47/57 :(.
>From gcc-bugs-return-638870-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 16:24:59 2019
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Subject: [Bug c++/77875] C++ core issue 1288
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, probably, but it doesn't seem useful for T{i} to do anything except bind a
reference of type T to i. Issue 1521 seems to be a problem with the wording,
such that it doesn't apply to references, but I doubt it will be resolved by
saying that T{i} does anything surprising. But maybe I'm missing something.
>From gcc-bugs-return-638871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 16:31:06 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, the testcase (as many others) clearly shows that the generated code is
significantly worse after the combiner change. The question is if we can do
something to improve it.
>From gcc-bugs-return-638872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:07:50 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Thu, 28 Mar 2019 17:07:00 -0000
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #4)
> Just for the record, my Ryzen machine periodic tester probably improved due
> to the revision:
> https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=158.377.0&plot.1=41.
> 377.0&plot.2=70.377.0&plot.3=31.377.0
>
> As seen, it's now about 5% faster than GCC8 branch.
Very interesting, thanks for that! Since the two of you both used -O2 and
generic tuning (ie, same code), that would tend to agree with my speculation
that this is an AMD EPYC specific pipeline issue/hazard/... we're unluckily
hitting. Agreed? If so, I'm not sure we can really blame my patch, but if
someone could narrow down what the exact issue is that is causing the slowdown,
maybe we can mitigate it somehow.
>From gcc-bugs-return-638873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:09:33 2019
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Subject: [Bug c++/89868] -fsanitizedress inhibits C++ unhandled exception core dump
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #2)
> Ah that sounds possible. I imagine it is not GCC that would be the one that
> controls the core dumping? Perhaps where ever that code is, it could just
> say "Core too large (xyz MB) unable to dump".
That would be the kernel.
>From gcc-bugs-return-638874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:11:26 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 17:11:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bergner at gcc dot gnu.org,
| |vmakarov at gcc dot gnu.org
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Actually, there are only very few revisions since 8.x that change something on
this testcase with -Os -fno-shrink-wrap -masm=att
-fno-asynchronous-unwind-tables (the latter to be able to more accurately
compare *.s sizes). GCC 8.3 emits code pretty similar to trunk immediately
before r264897, just scheduling decisions reorder some instructions, nothing
else.
ls -l pr49095.s{.8*,r2*}
-rw-rw-r--. 1 jakub jakub 16364 Mar 28 12:58 pr49095.s.8.3.1
-rw-rw-r--. 1 jakub jakub 16361 Mar 28 12:50 pr49095.s.r264892
-rw-rw-r--. 1 jakub jakub 17545 Mar 28 12:50 pr49095.s.r264897
-rw-rw-r--. 1 jakub jakub 17545 Mar 28 12:51 pr49095.s.r265393
-rw-rw-r--. 1 jakub jakub 16361 Mar 28 12:51 pr49095.s.r265398
-rw-rw-r--. 1 jakub jakub 16361 Mar 28 12:55 pr49095.s.r266382
-rw-rw-r--. 1 jakub jakub 18989 Mar 28 12:55 pr49095.s.r266385
-rw-rw-r--. 1 jakub jakub 18989 Mar 28 12:55 pr49095.s.r269951
r264892 is identical to r265398 and r266382, r264897 to r265393, and r266385 to
r269951. Judging by both assembly size and .text size:
size pr49095.o.*
text data bss dec hex filename
1585 0 0 1585 631 pr49095.o.8.3.1
1585 0 0 1585 631 pr49095.o.r264892
2066 0 0 2066 812 pr49095.o.r264897
2066 0 0 2066 812 pr49095.o.r265393
1585 0 0 1585 631 pr49095.o.r265398
1585 0 0 1585 631 pr49095.o.r266382
2545 0 0 2545 9f1 pr49095.o.r266385
2545 0 0 2545 9f1 pr49095.o.r269951
(this is -Os, so that is what matters), r264897 made the generated code worse,
then r265398 reverted it to the previously generated code and r266385 made it
even worse.
>From gcc-bugs-return-638875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:14:42 2019
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 28 17:14:05 2019
New Revision: 270001
URL: https://gcc.gnu.org/viewcvs?rev=270001&root=gcc&view=rev
Log:
PR c/89812
* gcc.dg/attr-aligned-3.c: Limit the test to known ELF targets
other than AVR. Add dg-options "".
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/attr-aligned-3.c
>From gcc-bugs-return-638876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:17:45 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Thu, 28 Mar 2019 17:17:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Hi, the assembly of the most affected function does not change at all, just its
offset (is 0x10 bytes bigger). Aligning the loops in the function a bit more
avoids most of the slowdown but not quite all of it. In any event, this is a
microarchitectural problem that we probably cannot do anything about. Sorry
for the noise, I will check for this the next time before I report a problem.
>From gcc-bugs-return-638877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:17:46 2019
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Subject: [Bug middle-end/26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
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Bug 26163 depends on bug 89853, which changed state.
Bug 89853 Summary: Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89853
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
>From gcc-bugs-return-638878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:21:27 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, the r264897 change to the testcase was clearly bogus, because then the
testcase is really useless, the intent of the testcase was to check that all
(but the 8) peepholes did the right thing and there are no RMW cycles, with all
the loads and stores from RA (that were previously push/pop instead with no
other %sp changes) that is not tested anymore.
>From gcc-bugs-return-638879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:22:46 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #8)
> (this is -Os, so that is what matters), r264897 made the generated code
> worse, then r265398 reverted it to the previously generated code and r266385
> made it even worse.
BTW: r266385 also regressed:
FAIL: gcc.target/i386/pr81563.c scan-assembler-times movl[\\\\t
]*-4\\\\(%ebp\\\\),[\\\\t ]*%edi 1
FAIL: gcc.target/i386/pr81563.c scan-assembler-times movl[\\\\t
]*-8\\\\(%ebp\\\\),[\\\\t ]*%esi 1
>From gcc-bugs-return-638880-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:25:38 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #11 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #9)
> Note, the r264897 change to the testcase was clearly bogus, because then the
> testcase is really useless, the intent of the testcase was to check that all
> (but the 8) peepholes did the right thing and there are no RMW cycles, with
> all the loads and stores from RA (that were previously push/pop instead with
> no other %sp changes) that is not tested anymore.
I suggest we apply my LEA patch (that is a clear improvement), and recategorize
the PR as a RA regression.
>From gcc-bugs-return-638881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:26:59 2019
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Subject: [Bug rtl-optimization/89853] Regression of 525.x264_r at -O2 (and generic tuning) on AMD EPYC
Date: Thu, 28 Mar 2019 17:26:00 -0000
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--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Martin Jambor from comment #6)
> Hi, the assembly of the most affected function does not change at all, just
> its offset (is 0x10 bytes bigger). Aligning the loops in the function a bit
> more avoids most of the slowdown but not quite all of it. In any event,
> this is a microarchitectural problem that we probably cannot do anything
> about. Sorry for the noise, I will check for this the next time before I
> report a problem.
We've seen similar issues on POWER, where a particular revision causes slight
size changes in a function that changes the function offset of some other later
function and that causes a performance change. Unfortunately, just increasing
function alignment to eliminate that has other unintended performance issues.
Thanks for isolating the issue.
>From gcc-bugs-return-638882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:30:01 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 17:30:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #11)
> (In reply to Jakub Jelinek from comment #9)
> I suggest we apply my LEA patch (that is a clear improvement), and
> recategorize the PR as a RA regression.
Agreed.
>From gcc-bugs-return-638883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 17:56:49 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 17:56:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #13 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #9)
> Note, the r264897 change to the testcase was clearly bogus, because then the
> testcase is really useless, the intent of the testcase was to check that all
> (but the 8) peepholes did the right thing and there are no RMW cycles, with
> all the loads and stores from RA (that were previously push/pop instead with
> no other %sp changes) that is not tested anymore.
So given Segher's r265398 changed the code generated for
gcc.target/i386/pr49095.c back to what is was before my r264897 change, are you
saying we should just backout my change to the test case so it looks like what
it did before my commit?
So any issues since then are due only to Vlad's r266385?
>From gcc-bugs-return-638884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 18:01:52 2019
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Thu, 28 Mar 2019 18:01:00 -0000
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #13)
> (In reply to Jakub Jelinek from comment #9)
> > Note, the r264897 change to the testcase was clearly bogus, because then the
> > testcase is really useless, the intent of the testcase was to check that all
> > (but the 8) peepholes did the right thing and there are no RMW cycles, with
> > all the loads and stores from RA (that were previously push/pop instead with
> > no other %sp changes) that is not tested anymore.
>
> So given Segher's r265398 changed the code generated for
> gcc.target/i386/pr49095.c back to what is was before my r264897 change, are
> you saying we should just backout my change to the test case so it looks
> like what it did before my commit?
Yes, but only if r266385 wasn't in. Now that it is in, it wouldn't match
anyway, so we need to find out if something can be done about it, or if we just
test for it some other way (rtl dump scan, -dP or whatever and specifically
differentiate the loads using the argument pointer as address vs. anything
else).
> So any issues since then are due only to Vlad's r266385?
I think so.
>From gcc-bugs-return-638885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 18:08:16 2019
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Subject: [Bug c++/89867] internal compiler error: in layout_type, at stor-layout.c:2578
Date: Thu, 28 Mar 2019 18:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|needs-reduction |
Target|arm-none-eabi |
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started to ICE with r139798 when C++11 auto has been implemented I think.
Reduced testcase:
auto a __attribute__((__may_alias__)) = 1;
ICEs on all targets.
>From gcc-bugs-return-638886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 18:16:00 2019
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Subject: [Bug c++/89867] internal compiler error: in layout_type, at stor-layout.c:2578
Date: Thu, 28 Mar 2019 18:15:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
processing_template_decl is false, but the type is still auto. Do we need to
treat all attributes like late ones, or just the late ones that way even when
!processing_template_decl and is_auto, something else?
>From gcc-bugs-return-638887-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 18:19:00 2019
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #11 from Wilco <wilco at gcc dot gnu.org> ---
There is also something odd with the way the loop iterates, this doesn't look
right:
whilelo p0.s, x3, x4
incw x3
ptest p1, p0.b
bne .L3
>From gcc-bugs-return-638888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 18:23:54 2019
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Subject: [Bug c++/89836] converted constant expression of type bool and explicit conversion functions
Date: Thu, 28 Mar 2019 18:23:00 -0000
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Mar 28 18:23:18 2019
New Revision: 270002
URL: https://gcc.gnu.org/viewcvs?rev=270002&root=gcc&view=rev
Log:
PR c++/89836 - bool constant expression and explicit conversions.
* call.c (build_converted_constant_expr_internal): New function,
renamed from...
(build_converted_constant_expr): ...this. New.
(build_converted_constant_bool_expr): New.
* cp-tree.h (build_converted_constant_bool_expr): Declare.
* decl.c (build_explicit_specifier): Call
build_converted_constant_bool_expr.
* g++.dg/cpp2a/explicit15.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/explicit15.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89836
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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From: "vincent.hamp at higaski dot at" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89871] New: Wall + designated initializers
Date: Thu, 28 Mar 2019 18:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89871
Bug ID: 89871
Summary: Wall + designated initializers
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: vincent.hamp at higaski dot at
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Created attachment 46050
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46050&action=edit
Example fails to compile with -Wall
Using a struct with an anonymous union and trying to assign to it using
designated initializers does not compile with -Wall.
So e.g.
g++ -std=c++2a -Wall designated_init.cpp
produces
"internal compiler error: side-effects element in no-side-effects CONSTRUCTOR"
The error can be reproduced on 8.1, 8.2 and 8.3. The current trunk however
seems to work.
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From: "pascal_cuoq at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89872] New: GCC does not generate read access to volatile compound literal
Date: Thu, 28 Mar 2019 19:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89872
Bug ID: 89872
Summary: GCC does not generate read access to volatile compound
literal
Product: gcc
Version: 8.3.0
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This report is similar to but different from my previous report
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82340
Consider the C code below. The report is about the compilation of the functions
g and hg. The other functions are included only for discussion of the expected
behavior.
void f(void) {
volatile int y=1, z=2;
y + z;
}
void g(void)
{
(volatile int){1} + (volatile int){2};
}
void k(void)
{
(volatile int){1};
}
void hf(void)
{
for (int i = 0; i < 1000; i++) f();
}
void hg(void)
{
for (int i = 0; i < 1000; i++) g();
}
void hk(void)
{
for (int i = 0; i < 1000; i++) k();
}
When compiling with -O3, the versions trunk and 8.3 of GCC on Compiler Explorer
(https://gcc.godbolt.org/z/2Il4GG ) produce the following x86-64:
f:
movl $1, -8(%rsp)
movl $2, -4(%rsp)
movl -8(%rsp), %eax
movl -4(%rsp), %eax
ret
g:
ret
k:
movl $1, -4(%rsp)
movl -4(%rsp), %eax
ret
hf:
movl $1000, %eax
.L6:
movl $1, -8(%rsp)
movl $2, -4(%rsp)
movl -8(%rsp), %edx
movl -4(%rsp), %edx
subl $1, %eax
jne .L6
ret
hg:
ret
hk:
movl $1000, %eax
.L10:
movl $1, -4(%rsp)
movl -4(%rsp), %edx
subl $1, %eax
jne .L10
ret
The functions g and hg are compiled to “retâ€. Because reading from a volatile
lvalue is an observable side-effect (C11 5.1.2.3:6
https://port70.net/~nsz/c/c11/n1570.html#5.1.2.3p6 ) I would have expected them
to be compiled more similarly to f and hf respectively.
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Subject: [Bug c++/89871] Wall + designated initializers
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Seems to have been fixed by r265609.
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Subject: [Bug target/89848] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2099 with -O2 -msse2 -mtune=pentium3m
Date: Thu, 28 Mar 2019 19:16:00 -0000
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--- Comment #2 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Mar 28 19:15:58 2019
New Revision: 270003
URL: https://gcc.gnu.org/viewcvs?rev=270003&root=gcc&view=rev
Log:
PR target/89848
* config/i386/i386.c (dimode_scalar_chain::make_vector_copies):
Also process XEXP (src, 0) of a shift insn.
testsuite/ChangeLog:
PR target/89848
* gcc.target/i386/pr89848.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89848.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/29670] [meta-bug] fortran interfaces
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Bug 29670 depends on bug 62176, which changed state.
Bug 62176 Summary: [OOP] Inconsistent resolution of GENERIC interface
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62176
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |INVALID
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Subject: [Bug fortran/62176] [OOP] Inconsistent resolution of GENERIC interface
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janus at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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CC| |janus at gcc dot gnu.org
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--- Comment #3 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #1)
> Reduced test
> [...]
>
> The code compiles if the lines
>
> generic :: lle => string_less_equal_char, &
> char_less_equal_string
>
> are commented. I cannot see how 'string_less_equal_char' and
> 'char_less_equal_string' are ambiguous for 'lle', but not for operator '<='.
Well, that's simply due to the different invocation syntax for both cases.
1) For the type-bound generic 'lle', the call looks like this:
str%lle(ch)
This matches both specific TBPs (which only differ in the position of the PASS
argument), therefore they are ambiguous in this context.
2) The operator '<=' is invoked by one of the two forms:
str <= ch
ch <= str
Here both specifics can be distinguished, so they are not ambiguous.
In summary, gfortran's behavior is perfectly fine. This is a non-bug.
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Subject: [Bug target/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #15 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Mar 28 19:33:22 2019
New Revision: 270004
URL: https://gcc.gnu.org/viewcvs?rev=270004&root=gcc&view=rev
Log:
PR target/89865
* config/i386/i386.md (RMW operation with LEA peephole):
Use LEAMODE mode attribute instead of SWI mode iterator for
LEA pattern.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89865
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ra
Target| |x86
Status|ASSIGNED |NEW
Component|target |rtl-optimization
Assignee|ubizjak at gmail dot com |unassigned at gcc dot gnu.org
--- Comment #16 from Uroš Bizjak <ubizjak at gmail dot com> ---
The exposed target-related problem is fixed.
Recategorizing as RA problem.
>From gcc-bugs-return-638898-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:00:30 2019
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Subject: [Bug fortran/65359] [OOP] undefined output with array and inheritance
Date: Thu, 28 Mar 2019 20:00:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|NEW |RESOLVED
CC| |janus at gcc dot gnu.org
Known to work| |8.2.0
Resolution|--- |FIXED
Known to fail| |7.3.0
--- Comment #2 from janus at gcc dot gnu.org ---
With 8.2.0 and trunk I get the correct output
1st: -100 -100 -200 -200
2nd: -100 -100 -200 -200
3rd: 91 92 93 94
4th: 91 92 93 94
without any valgrind errors. Apparently this has been fixed.
>From gcc-bugs-return-638899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:19:59 2019
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Subject: [Bug fortran/71796] Link error referencing compiler generated symbol __vtab_xxx
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |link-failure
Status|NEW |RESOLVED
CC| |janus at gcc dot gnu.org
Known to work| |7.3.0
Resolution|--- |FIXED
Known to fail| |6.5.0
--- Comment #6 from janus at gcc dot gnu.org ---
The problem is fixed since gfortran version 7. Closing.
>From gcc-bugs-return-638900-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:25:45 2019
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Subject: [Bug c++/89612] [7/8/9 Regression] internal compiler error: in push_access_scope, at cp/pt.c:237
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Mar 28 20:24:48 2019
New Revision: 270005
URL: https://gcc.gnu.org/viewcvs?rev=270005&root=gcc&view=rev
Log:
PR c++/89612 - ICE with member friend template with noexcept.
* pt.c (maybe_instantiate_noexcept): For function templates, use their
template result (function decl). Don't set up local specializations.
Temporarily turn on processing_template_decl. Update the template type
too.
* g++.dg/cpp0x/noexcept38.C: New test.
* g++.dg/cpp0x/noexcept39.C: New test.
* g++.dg/cpp1z/noexcept-type21.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/noexcept38.C
trunk/gcc/testsuite/g++.dg/cpp0x/noexcept39.C
trunk/gcc/testsuite/g++.dg/cpp1z/noexcept-type21.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89612] [7/8 Regression] internal compiler error: in push_access_scope, at cp/pt.c:237
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] internal |[7/8 Regression] internal
|compiler error: in |compiler error: in
|push_access_scope, at |push_access_scope, at
|cp/pt.c:237 |cp/pt.c:237
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-638902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:37:31 2019
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Subject: [Bug c++/89873] New: internal compiler error: unexpected expression of kind implicit_conv_expr
Date: Thu, 28 Mar 2019 20:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89873
Bug ID: 89873
Summary: internal compiler error: unexpected expression of kind
implicit_conv_expr
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
Split out of <https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01379.html>.
// { dg-do compile { target c++14 } }
template <int> bool b;
template <typename>
struct C {
template <typename> friend int foo() noexcept(b<1>); // { dg-error "not
usable in a constant expression|different exception specifier" }
};
template <typename> int foo() noexcept(b<1>);
auto a = C<int>();
$ ./cc1plus -quiet noexcept1.C
noexcept1.C: In instantiation of ‘int foo()’:
noexcept1.C:7:34: required from ‘struct C<int>’
noexcept1.C:12:17: required from here
noexcept1.C:7:34: internal compiler error: unexpected expression ‘b<1>’ of kind
implicit_conv_expr
7 | template <typename> friend int foo() noexcept(b<1>); // { dg-error
"not usable in a constant expression|different exception specifier" }
| ^~~
0x8ecf05 cxx_eval_constant_expression
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:5207
0x8ed7d8 cxx_eval_outermost_constant_expr
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:5322
0x8ee06b cxx_constant_value(tree_node*, tree_node*)
/home/mpolacek/src/gcc/gcc/cp/constexpr.c:5445
0x9b3530 build_noexcept_spec(tree_node*, int)
/home/mpolacek/src/gcc/gcc/cp/except.c:1292
0xb0c359 maybe_instantiate_noexcept(tree_node*, int)
/home/mpolacek/src/gcc/gcc/cp/pt.c:24274
0x93316e check_redeclaration_exception_specification
/home/mpolacek/src/gcc/gcc/cp/decl.c:1157
0x93a793 duplicate_decls(tree_node*, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/decl.c:2078
0xa1bc0a do_pushdecl
/home/mpolacek/src/gcc/gcc/cp/name-lookup.c:3034
0xa1c611 pushdecl(tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/name-lookup.c:3162
0xa1eb16 do_pushdecl_with_scope
/home/mpolacek/src/gcc/gcc/cp/name-lookup.c:3900
0xa23319 pushdecl_namespace_level(tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/name-lookup.c:5091
0xac8e40 tsubst_friend_function
/home/mpolacek/src/gcc/gcc/cp/pt.c:10417
0xacdac8 instantiate_class_template_1
/home/mpolacek/src/gcc/gcc/cp/pt.c:11404
0xacdd20 instantiate_class_template(tree_node*)
/home/mpolacek/src/gcc/gcc/cp/pt.c:11469
0xb976b1 complete_type(tree_node*)
/home/mpolacek/src/gcc/gcc/cp/typeck.c:138
0xb976d6 complete_type_or_maybe_complain(tree_node*, tree_node*, int)
/home/mpolacek/src/gcc/gcc/cp/typeck.c:150
0xbc8b21 build_functional_cast(tree_node*, tree_node*, int)
/home/mpolacek/src/gcc/gcc/cp/typeck2.c:2272
0xa6ba2b cp_parser_functional_cast
/home/mpolacek/src/gcc/gcc/cp/parser.c:28373
0xa40cd4 cp_parser_postfix_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:7098
0xa4453f cp_parser_unary_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:8469
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug c++/89873] internal compiler error: unexpected expression of kind implicit_conv_expr
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |ASSIGNED
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Ever confirmed|0 |1
>From gcc-bugs-return-638904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:40:17 2019
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Subject: [Bug c++/89873] internal compiler error: unexpected expression of kind implicit_conv_expr
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r214396.
>From gcc-bugs-return-638905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:41:18 2019
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Subject: [Bug c++/89874] New: invalid conversion accepted in decltype in a template
Date: Thu, 28 Mar 2019 20:41:00 -0000
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Bug ID: 89874
Summary: invalid conversion accepted in decltype in a template
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
G++ accepts the following ill-formed program:
$ cat u.C && /gcc -S -Wall -Wextra u.C
char f (int);
template <typename T>
decltype (f ("123")) // invalid: no conversion from const char* to int
g (T);
void h () { g (0); }
Clang prints:
u.C:4:11: error: no matching function for call to 'f'
decltype (f ("123")) // invalid: no conversion from const char* to int
^
u.C:1:6: note: candidate function not viable: no known conversion from
'const char [4]' to 'int' for 1st argument
char f (int);
^
u.C:7:13: error: no matching function for call to 'g'
void h () { g (0); }
^
2 errors generated.
>From gcc-bugs-return-638906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:45:38 2019
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Subject: [Bug c++/57943] [c++11] invalid decltype expression accepted in template default type
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. This never worked correctly either with declype or __typeof__.
>From gcc-bugs-return-638907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:46:36 2019
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Subject: [Bug c++/89874] invalid conversion accepted in decltype in a template
Date: Thu, 28 Mar 2019 20:46:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
Known to fail| |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.3.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This was never rejected going as far back as GCC 4.1.
*** This bug has been marked as a duplicate of bug 57943 ***
>From gcc-bugs-return-638908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:46:36 2019
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Subject: [Bug c++/57943] [c++11] invalid decltype expression accepted in template default type
Date: Thu, 28 Mar 2019 20:46:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 89874 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 20:56:34 2019
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Subject: [Bug fortran/82971] ICE in gfc_find_derived_vtab, at fortran/class.c:2214 ...
Date: Thu, 28 Mar 2019 20:56:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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Status|NEW |RESOLVED
CC| |janus at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #3 from janus at gcc dot gnu.org ---
I can confirm the ICE up to version 8.2, but with current trunk I see:
5 | class(t), target :: z
| 1
Error: CLASS variable ‘z’ at (1) must be dummy, allocatable or pointer
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Subject: [Bug c++/89875] New: invalid typeof reference to a member of an incomplete struct accepted at function scope
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Bug ID: 89875
Summary: invalid typeof reference to a member of an incomplete
struct accepted at function scope
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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The following ill-formed test case modified from bug 66548 is still accepted by
GCC 9:
$ cat u.C && gcc -S -Wall -Wextra u.C
void f ()
{
__typeof__ (Meow.purr) d;
}
u.C: In function ‘void f()’:
u.C:5:26: warning: unused variable ‘d’ [-Wunused-variable]
5 | __typeof__ (Meow.purr) d;
| ^
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Subject: [Bug c++/66548] Invalid class member access expression in decltype sometimes accepted
Date: Thu, 28 Mar 2019 21:04:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
This has been rejected since r231354:
r231354 | jason | 2015-12-06 23:35:14 -0500 (Sun, 06 Dec 2015) | 4 lines
Fix parse/no-type-defn1.C with -std=c++1z.
* parser.c (struct tentative_firewall): New.
(cp_parser_template_id, cp_parser_decltype_expr): Use it.
The equivalent code using __typeof__ is still accepted. I opened bug 89875 for
it.
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Subject: [Bug c++/89875] [7/8/9 Regression] invalid typeof reference to a member of an incomplete struct accepted at function scope
Date: Thu, 28 Mar 2019 21:04:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Known to work| |4.9.4
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=66548
Summary|invalid typeof reference to |[7/8/9 Regression] invalid
|a member of an incomplete |typeof reference to a
|struct accepted at function |member of an incomplete
|scope |struct accepted at function
| |scope
Known to fail| |5.1.0, 6.4.0, 7.3.0, 8.2.0,
| |9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The full test case is:
struct Meow;
void f ()
{
__typeof__ (Meow.purr) d;
}
Bisection points to r213952 (gcc 4.10.0):
------------------------------------------------------------------------
r213952 | paolo | 2014-08-14 05:15:11 -0400 (Thu, 14 Aug 2014) | 34 lines
/gcc/cp
2014-08-14 Paolo Carlini <paolo.carlini@oracle.com>
* parser.c (cp_parser_init_declarator): Remove redundant check of
decl_specifiers->type.
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Subject: [Bug c++/81506] Invalid declaration with decltype accepted
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81506
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |msebor at gcc dot gnu.org
Known to work| |9.0
Resolution|--- |FIXED
Known to fail| |8.3.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
This appears to have been fixed by r267165 (gcc 9.0.0):
r267165 | paolo | 2018-12-15 04:07:38 -0500 (Sat, 15 Dec 2018) | 16 lines
/cp
2018-12-15 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84644
* decl.c (check_tag_decl): A decltype with no declarator
doesn't declare anything.
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Subject: [Bug c++/81506] Invalid declaration with decltype accepted
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Mar 28 21:20:18 2019
New Revision: 270006
URL: https://gcc.gnu.org/viewcvs?rev=270006&root=gcc&view=rev
Log:
PR c++/81506 - Invalid declaration with decltype accepted
testsuite/ChangeLog:
* g++.dg/cpp0x/decltype-pr81506.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/decltype-pr81506.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/66548] Invalid class member access expression in decltype sometimes accepted
Date: Thu, 28 Mar 2019 21:32:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Mar 28 21:32:11 2019
New Revision: 270007
URL: https://gcc.gnu.org/viewcvs?rev=270007&root=gcc&view=rev
Log:
PR c++/66548 - Invalid class member access expression in decltype sometimes
accepted
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/decltype-pr66548.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/decltype-pr66548.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89848] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2099 with -O2 -msse2 -mtune=pentium3m
Date: Thu, 28 Mar 2019 21:39:00 -0000
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--- Comment #3 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Mar 28 21:38:44 2019
New Revision: 270008
URL: https://gcc.gnu.org/viewcvs?rev=270008&root=gcc&view=rev
Log:
PR target/89848
* config/i386/i386.c (dimode_scalar_chain::make_vector_copies):
Also process XEXP (src, 0) of a shift insn.
testsuite/ChangeLog:
PR target/89848
* gcc.target/i386/pr89848.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr89848.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/i386.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89876] New: ICE in convert_like_real on decltype expression involving string conversion to char*
Date: Thu, 28 Mar 2019 21:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89876
Bug ID: 89876
Summary: ICE in convert_like_real on decltype expression
involving string conversion to char*
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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The following ill-formed test case triggers an ICE in GCC 8 and 9:
$ cat u.C && gcc -S -Wall -Wextra u.C
template <typename T>
T f (T, char*);
template <typename T>
decltype (f (T (), "")) g (T) { }
void h () { g (0); }
u.C: In substitution of ‘template<class T> decltype (f(T(), "")) g(T) [with T =
int]’:
u.C:7:17: required from here
u.C:5:20: warning: ISO C++ forbids converting a string constant to ‘char*’
[-Wwrite-strings]
5 | decltype (f (T (), "")) g (T) { }
| ^~
‘
Internal compiler error: Error reporting routines re-entered.
0xb7e259 string_conv_p(tree_node const*, tree_node const*, int)
/src/gcc/git-svn/gcc/cp/typeck.c:2243
0x8435b5 convert_like_real
/src/gcc/git-svn/gcc/cp/call.c:7449
0x8470b6 build_over_call
/src/gcc/git-svn/gcc/cp/call.c:8379
0x837221 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
/src/gcc/git-svn/gcc/cp/call.c:4519
0xb20ec0 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
/src/gcc/git-svn/gcc/cp/semantics.c:2585
0xaca585 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/src/gcc/git-svn/gcc/cp/pt.c:19022
0xab38ae tsubst(tree_node*, tree_node*, int, tree_node*)
/src/gcc/git-svn/gcc/cp/pt.c:15068
0x960b6c dump_template_bindings
/src/gcc/git-svn/gcc/cp/error.c:407
0x96747e dump_substitution
/src/gcc/git-svn/gcc/cp/error.c:1544
0x968a99 dump_function_decl
/src/gcc/git-svn/gcc/cp/error.c:1700
0x96617a dump_decl
/src/gcc/git-svn/gcc/cp/error.c:1278
0x96f216 decl_to_string
/src/gcc/git-svn/gcc/cp/error.c:3076
0x97239b cp_printer
/src/gcc/git-svn/gcc/cp/error.c:4090
0x23f7fef pp_format(pretty_printer*, text_info*)
/src/gcc/git-svn/gcc/pretty-print.c:1390
0x23f83f9 pp_format_verbatim(pretty_printer*, text_info*)
/src/gcc/git-svn/gcc/pretty-print.c:1452
0x23f8ac7 pp_verbatim(pretty_printer*, char const*, ...)
/src/gcc/git-svn/gcc/pretty-print.c:1671
0x970c67 print_instantiation_full_context
/src/gcc/git-svn/gcc/cp/error.c:3474
0x9711c0 maybe_print_instantiation_context
/src/gcc/git-svn/gcc/cp/error.c:3622
0x96fbda cp_diagnostic_starter
/src/gcc/git-svn/gcc/cp/error.c:3325
0x23d6c5b diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
/src/gcc/git-svn/gcc/diagnostic.c:1016
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug target/89848] [8/9 Regression] ICE: in convert_op, at config/i386/i386.c:2099 with -O2 -msse2 -mtune=pentium3m
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
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Subject: [Bug c++/89876] [8/9 Regression] ICE in convert_like_real on decltype expression involving string conversion to char*
Date: Thu, 28 Mar 2019 21:43:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Summary|ICE in convert_like_real on |[8/9 Regression] ICE in
|decltype expression |convert_like_real on
|involving string conversion |decltype expression
|to char* |involving string conversion
| |to char*
Known to fail| |8.3.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to r254437:
r254437 | marxin | 2017-11-06 04:02:15 -0500 (Mon, 06 Nov 2017) | 25 lines
Instrument function exit with __builtin_unreachable in C++
Prior to that change GCC would reject the test case with a slightly better for
of an ICE:
t.C: In substitution of ‘template<class T> decltype (f(T(), "")) g(T) [with T =
int]’:
t.C:7:17: required from here
t.C:5:13: warning: ISO C++ forbids converting a string constant to ‘char*’
[-Wwrite-strings]
decltype (f (T (), "")) g (T) { }
~~^~~~~~~~~~
t.C: In instantiation of ‘decltype (f(T(), "")) g(T) [with T = int]’:
t.C:5:25: sorry, unimplemented: string literal in function template signature
decltype (f (T (), "")) g (T) { }
^
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Subject: [Bug c++/89876] [8/9 Regression] ICE in convert_like_real on decltype expression involving string conversion to char*
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=47488,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=89833
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
I stumbled into it while working on a fix for bug 47488 for GCC 9, which in
turn was precipitated by bug 89833.
>From gcc-bugs-return-638921-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 21:50:35 2019
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Subject: [Bug c++/89874] invalid conversion accepted in decltype in a template
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=47488
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
See pr47488 for the origin of the test case.
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Subject: [Bug c++/58031] invalid class template partial specialization accepted where argument list identical to primary template
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-28
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.9.3, 5.3.0, 6.3.0, 7.3.0,
| |8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug c/89872] GCC does not generate read access to volatile compound literal
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-638924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 22:16:23 2019
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Subject: [Bug target/89877] New: [ARC] miscompilation due to missing cc clobber in longlong.h: add_ssaaaa()/sub_ddmmss()
Date: Thu, 28 Mar 2019 22:16:00 -0000
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Bug ID: 89877
Summary: [ARC] miscompilation due to missing cc clobber in
longlong.h: add_ssaaaa()/sub_ddmmss()
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Created attachment 46051
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46051&action=edit
test case, build with -O2 to show issue
A glibc build with -mcpu=hs4x sowed weird print values for test case below
(originally showed in multibench test harness printing wrong values)
void main(int argc, char *argv[])
{
size_t total_time = 115424
double secs = (double)total_time/(double)1000;
printf("%s %d %lf\n", "secs", total_time, secs); // prints 113.504
printf("%d\n", (size_t)secs);
}
The code path leads to glibc stdlib/divrem.c: __mpn_divrem() which in turn uses
target defined inline asm macros in stdlib/longlong.h (which in turns is
sync'ed from gcc include/longlong.h)
These inline macros clobber the cpu flags, but fail to add "cc" in clobber
list.
This causes gcc to schedule a flag setting CMP instruction (or ADD.f) before
the clobbering ADD.f/SUB.f instructions, causing a subsequent conditional
branch to use a stale flag.
__mpn_divrem:
...
.L135:
...
st -1,[r0]
cmp_s r10,-1 <-- intended flag
sub r0,r0,4
sub r4,r2,r9
add.f r2, r18, r9 <-- clobbered
adc r3, r4, 0
beq_s @.L72 <-- stale flag used
-mcpu=hs4x + cc clobber fix
---------------------------
st -1,[r0]
sub r4,r2,r9
sub r0,r0,4
add.f r2, r18, r9
adc r3, r4, 0
cmp_s r10,-1 <-- intended flag
beq_s @.L72 <-- right flag used
The issue doesn't happen with default -mpcu=hs38 as the instruction scheduling
already delays the CMP for some reason.
-mcpu=hs38
----------
st -1,[r0]
sub r4,r2,r9
sub r0,r0,4
add.f r2, r18, r9
adc r3, r4, 0
cmp_s r10,-1
beq_s @.L72
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/81506] Invalid declaration with decltype accepted
Date: Thu, 28 Mar 2019 22:17:00 -0000
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--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thanks Martin. This reminds me that we should tell David that in some cases the
"waves" following the caret don't go on far enough. Or maybe he already knows
or maybe we should do that instead ;)
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Subject: [Bug middle-end/89621] [7/8/9 Regression] ICE with allocatable character and openmp
Date: Thu, 28 Mar 2019 22:34:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 28 22:33:29 2019
New Revision: 270009
URL: https://gcc.gnu.org/viewcvs?rev=270009&root=gcc&view=rev
Log:
PR middle-end/89621
* tree-inline.h (struct copy_body_data): Add
dont_remap_vla_if_no_change flag.
* tree-inline.c (remap_type_3, remap_type_2): New functions.
(remap_type): Don't remap vla types if id->dont_remap_vla_if_no_change
and remap_type_2 returns false.
* omp-low.c (new_omp_context): Set ctx->cb.dont_remap_vla_if_no_change.
Move ctx->cb.adjust_array_error_bounds setting to the outermost ctx
only from where it is copied to nested contexts.
* gfortran.dg/gomp/pr89621.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/gomp/pr89621.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-low.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-inline.c
trunk/gcc/tree-inline.h
>From gcc-bugs-return-638927-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 22:43:53 2019
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Subject: [Bug middle-end/89621] [7/8 Regression] ICE with allocatable character and openmp
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE with |[7/8 Regression] ICE with
|allocatable character and |allocatable character and
|openmp |openmp
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9.1+ so far.
>From gcc-bugs-return-638928-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 23:04:00 2019
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Subject: [Bug target/89877] [ARC] miscompilation due to missing cc clobber in longlong.h: add_ssaaaa()/sub_ddmmss()
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Vineet Gupta <vgupta at synopsys dot com> changed:
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----------------------------------------------------------------------------
CC| |vgupta at synopsys dot com
--- Comment #1 from Vineet Gupta <vgupta at synopsys dot com> ---
Created attachment 46052
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46052&action=edit
proposed fix
patch to fix the issue.
>From gcc-bugs-return-638929-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 23:12:04 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89868] -fsanitizedress inhibits C++ unhandled exception core dump
Date: Thu, 28 Mar 2019 23:12:00 -0000
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--- Comment #4 from Jonny Grant <jg at jguk dot org> ---
(In reply to Andrew Pinski from comment #3)
> (In reply to Jonny Grant from comment #2)
> > Ah that sounds possible. I imagine it is not GCC that would be the one that
> > controls the core dumping? Perhaps where ever that code is, it could just
> > say "Core too large (xyz MB) unable to dump".
>
> That would be the kernel.
Hi Andrew
I had a look through kernel and /fs/binfmt_elf.c but couldn't spot where the
"Aborted (core dumped)" comes from, do you know by any chance?
>From gcc-bugs-return-638930-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 28 23:48:58 2019
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Subject: [Bug c++/89878] New: same specializations on a zero-initialized struct object as a non-type parameter treated as distinct
Date: Thu, 28 Mar 2019 23:48:00 -0000
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Bug ID: 89878
Summary: same specializations on a zero-initialized struct
object as a non-type parameter treated as distinct
Product: gcc
Version: 9.0
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While testing a patch for bug 89833 I noticed that the C++ 2a test case below
is accepted even though it redefines the same function f() three times, each
time taking an argument of the same type: B<A()>, with the only difference
between them being the form of initialization of the non-type parameter. The
mangling of each of the functions is also distinct when it should be the same.
$ cat u.C && gcc -c -Wall -Wextra -std=c++2a u.C && nm u.o
struct A { int a[3]; };
template <A> struct B { };
void f (B<A{ }>) { }
void f (B<A{ 0 }>) { }
void f (B<A{ 0, 0 }>) { }
void f (B<A{ 0, 0, 0 }>) { }
0000000000000000 T _Z1f1BIXtl1AEEE
0000000000000010 T _Z1f1BIXtl1AtlA3_iLi0EEEEE
0000000000000020 T _Z1f1BIXtl1AtlA3_iLi0ELi0EEEEE
0000000000000030 T _Z1f1BIXtl1AtlA3_iLi0ELi0ELi0EEEEE
>From gcc-bugs-return-638931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 00:42:58 2019
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Subject: [Bug ipa/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
Date: Fri, 29 Mar 2019 00:42:00 -0000
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--- Comment #12 from JunMa <JunMa at linux dot alibaba.com> ---
(In reply to Jan Hubicka from comment #11)
> Removing the alias check seems correct to me. The same body alias patch was
> long and needed special casing those aliases on quite few places. I am not
> at all sure why I added this one, but it definitly silences the diagnostics
> completely that is wrong.
we cannot remove the alias check here directly, since the definition and alias
field of target node is set to true in cgraph_node::create_alias. Consider:
static void __attribute__((weakref("bar"))) foo1(void);
static void __attribute__((weakref("foo1"))) foo2(void);
void bar();
if alias check removed, gcc gives warning at foo2.
I have sent the patch to maillist， see
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01249.html， please have a look.
>From gcc-bugs-return-638932-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 01:53:12 2019
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Subject: [Bug other/89860] liboffloadmic/runtime/offload_target.cpp:332]: (style) Array index 'i' is used before limits check.
Date: Fri, 29 Mar 2019 01:53:00 -0000
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--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
The code is like:
for (int i = 0; i < m_vars_total; i++) {
// instead of m_vars[i].type.src we will use m_vars_extra[i].type_src
if (i < vars_total) {
......
if (m_vars[i].type.dst == c_extended_type && i < vars_total)
......
}
......
}
So the later ***i < vars_total*** is not actually needed.
>From gcc-bugs-return-638933-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:06:45 2019
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Subject: [Bug c++/62207] [7/8/9 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'overload' in tsubst_copy, at cp/pt.c
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com
--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Looking into it.
>From gcc-bugs-return-638934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:11:42 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89868] -fsanitizedress inhibits C++ unhandled exception core dump
Date: Fri, 29 Mar 2019 02:11:00 -0000
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Actually it comes from the shell.
e.g. from bash:
if ((WIFSTOPPED (show->status) == 0) &&
(WIFCONTINUED (show->status) == 0) &&
WIFCORED (show->status))
fprintf (stream, _("(core dumped) "));
As WIFCORED is set on status.
WIFCORED is really a define for WCOREDUMP.
http://man7.org/linux/man-pages/man2/waitpid.2.html
So basically the kernel does not communicate why a core is not dumped to the
waiting (parent) process.
>From gcc-bugs-return-638935-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:12:10 2019
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Subject: [Bug target/83531] Build broken on macOS 10.13.2
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Erik Schnetter <schnetter at gmail dot com> changed:
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--- Comment #7 from Erik Schnetter <schnetter at gmail dot com> ---
I don't think that people didn't notice. I rather think that they gave up
building the sanitizer. See also
https://github.com/spack/spack/tree/develop/var/spack/repos/builtin/packages/gcc
and
https://github.com/spack/spack/blob/develop/var/spack/repos/builtin/packages/gcc/darwin/headers-10.13-fix.patch
, which includes this fix automatically when GCC is built via Spack.
>From gcc-bugs-return-638937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:16:52 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
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--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://www.felixcloutier.com/x86/blsr
Says BMI1 is required.
Can you provide the output of /proc/cpuinfo on the host?
>From gcc-bugs-return-638936-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:16:39 2019
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Subject: [Bug bootstrap/89879] New: GCC fails to build on macOS 10.14.4
Date: Fri, 29 Mar 2019 02:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89879
Bug ID: 89879
Summary: GCC fails to build on macOS 10.14.4
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: schnetter at gmail dot com
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Created attachment 46053
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46053&action=edit
patch
After upgrading to macOS 10.14.4, GCC 8.3.0 does not build any more. The issue
is unrelated to Spack; even a vanilla GCC fails to install.
This StackExchange issue
<https://apple.stackexchange.com/questions/355049/compilation-error-with-mojave-error-atomic-does-not-name-a-type/355103#355103>
is a description of the problem including the actual error message. The
underlying problem is that a macOS header file uses the _Atomic keyword for C++
code, although this is only a C keyword. I assume that Clang defines _Atomic
even for C++ code as extension to the C++ standard.
The proper solution is probably adding a fixinclude for GCC.
>From gcc-bugs-return-638938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:17:39 2019
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Subject: [Bug bootstrap/89879] GCC fails to build on macOS 10.14.4
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 89864 ***
>From gcc-bugs-return-638939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:17:40 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |schnetter at gmail dot com
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89879 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:18:14 2019
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Subject: [Bug bootstrap/89879] GCC fails to build on macOS 10.14.4
Date: Fri, 29 Mar 2019 02:18:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Also patches go to gcc-patches@ After reading
https://gcc.gnu.org/contribute.html .
>From gcc-bugs-return-638941-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 02:57:48 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #7 from Erik Schnetter <schnetter at gmail dot com> ---
I tried adding a fixinclude that #defines _Atomic to volatile if the system
header is included from C++, and this resolved the issue for me.
A possible implementation is described here
<https://github.com/spack/spack/issues/11042>. I plan to submit a proper patch
to GCC next week.
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Subject: [Bug c++/89880] New: compiles code that should not be compiled
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Bug ID: 89880
Summary: compiles code that should not be compiled
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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https://godbolt.org/z/4cbr24
void f()
{
int a;
int b;
bool c;
if ((!((int(bool(a))) ^ (int(bool(b)))) && !(c))) {}
}
>From gcc-bugs-return-638943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 03:53:08 2019
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Subject: [Bug c++/89880] compiles code that should not be compiled
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to PR 86564.
This is due to https://en.wikipedia.org/wiki/Most_vexing_parse .
>From gcc-bugs-return-638944-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 03:56:09 2019
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
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--- Comment #6 from bin cheng <amker at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #4)
> I think the issue is that the DDR is bogus - loop interchange computes
> data-refs
> for a deeper nest (including some outer loops) than it ends up doing
> dependence checking later on. But we have access functions analyzed with
> respect to outer loops already.
>
> I think it would be possible to handle this in data dependence computation,
> simply treating evolutions in outer loops as invariants. Eventually the
> access functions evolving in outer loops can also be pruned? We can't
> really undo SCEV analysis on them.
>
> I think that Jakubs fix is too conservative though.
>
> Since we fail when we cannot compute the "invalid" subscript distance at the
> moment the safest fix would probably to create the DDR with the loop-nest
> we originally analyzed? Bin?
Unfortunately No. The access functions are analyzed wrto outer loops in order
to cache find-data-reference process, thus save compilation time. Actually, we
end up with computing ddr wrto deeper loop_nest here because computation with
the originally analyzed loop_nest has failed. So this change won't do anything
other than compute the same DDRs twice (and both would fail).
There may be couple ways out.
1. Cancel the data reference caching by collecting DRs for loop_nest. At this
stage, this might be the safest fix but very expensive.
2. Fix the DDR analysis code. For example as you suggested, or maybe we can
simply bypass the irrelevant part when computing dir/dist vector?
3. Note we already prune_data_refs_not_in_loop, we can also prune the access
functions too. Not sure if this is feasible. Also not sure if it's useful
enough to be exposed as an tree-data-ref.h interface. Will have a check.
> diff --git a/gcc/tree-data-ref.h b/gcc/tree-data-ref.h
> index 11aa806a64d..54651e903ff 100644
> --- a/gcc/tree-data-ref.h
> +++ b/gcc/tree-data-ref.h
> @@ -585,6 +585,7 @@ index_in_loop_nest (int var, vec<loop_p> loop_nest)
> if (loopi->num == var)
> break;
>
> + gcc_assert (var_index < loop_nest.length ());
> return var_index;
> }
Guess this code should be included anyway, right?
Thanks
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
Assignee|aoliva at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Alexandre Oliva from comment #5)
> I've been working on an off on this specific issue, and on various
> surrounding infrastructure issues, for a very long time. Right now I'm not
> specifically working on it.
ok, taking the "right now" part as the operative part and moving you from the
assignee slot to the cc list
>From gcc-bugs-return-638946-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 06:43:22 2019
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Fri, 29 Mar 2019 06:43:00 -0000
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--- Comment #7 from bin cheng <amker at gcc dot gnu.org> ---
I am testing below simple fix, it bypass access functions doesn't belong to
analyzing loop_nest:
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c
index e536b463e96..410d44f43e8 100644
--- a/gcc/tree-data-ref.c
+++ b/gcc/tree-data-ref.c
@@ -4272,6 +4272,7 @@ build_classic_dist_vector_1 (struct
data_dependence_relation *ddr,
{
unsigned i;
lambda_vector init_v = lambda_vector_new (DDR_NB_LOOPS (ddr));
+ struct loop *loop = DDR_LOOP_NEST (ddr)[0];
for (i = 0; i < DDR_NUM_SUBSCRIPTS (ddr); i++)
{
@@ -4302,6 +4303,15 @@ build_classic_dist_vector_1 (struct
data_dependence_relation *ddr,
return false;
}
+ /* When data references are collected in a loop while data
+ dependences are analyzed in loop nest nested in the loop, we
+ would have more number of access functions than number of
+ loops. Skip access functions of loops not in the loop nest.
+
+ See PR89725 for more information. */
+ if (flow_loop_nested_p (get_loop (cfun, var_a), loop))
+ continue;
+
dist = int_cst_value (SUB_DISTANCE (subscript));
index = index_in_loop_nest (var_a, DDR_LOOP_NEST (ddr));
*index_carry = MIN (index, *index_carry);
Plus the assert in index_in_loop_nest.
>From gcc-bugs-return-638947-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 06:45:52 2019
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From: "lumosimann at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89881] New: Incorrect warning "-Wunneeded-internal-declaration"
Date: Fri, 29 Mar 2019 06:45:00 -0000
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Bug ID: 89881
Summary: Incorrect warning "-Wunneeded-internal-declaration"
Product: gcc
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Component: c++
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Suppose you have a concept implementation (pre-C++17). This might be something
like this:
#include <utility>
template <typename T, typename = void>
struct check_concept : std::false_type {};
template <typename T>
struct check_concept<T, std::enable_if_t<
std::is_same_v<decltype(f(std::declval<T>())), int>>> : std::true_type
{};
The type T fulfills the concept if there exists a function f that takes T and
returns int. There may be other functions required for the concept.
Now we are going to use the concept, maybe in a unittest.
namespace {
struct my_type {};
int f(my_type); // my_type implements the concept
static_assert(check_concept<my_type>::value, "");
}
This will warn about f being unneeded. Somehow it is, because it is not
actually emitted, but on the hand, f is needed because we want to ensure that f
fulfills the concept.
Is the warning correct or not?
See also https://godbolt.org/z/fROBm1
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Fri, 29 Mar 2019 07:38:00 -0000
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--- Comment #8 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Hi Erik,
your patch works beyond the point where the problem occurs first, but then the
sanitizer still fails bootstrapping:
In file included from /usr/include/sys/sysctl.h:83,
from
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc:70:
/usr/local/packages/gcc_9.0/_build/gcc/include-fixed/sys/ucred.h:106:2: error:
'_Atomic' does not name a type
106 | _Atomic u_long cr_ref; /* reference count */
| ^~~~~~~
In file included from
../../../../libsanitizer/sanitizer_common/sanitizer_flags.h:15,
from
../../../../libsanitizer/sanitizer_common/sanitizer_common.h:17,
from
../../../../libsanitizer/sanitizer_common/sanitizer_mac.h:14,
from
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc:14:
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc: In member function
'void __sanitizer::BlockingMutex::CheckLocked()':
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc:406:13: warning:
dereferencing type-punned pointer will break strict-aliasing rules
[-Wstrict-aliasing]
406 | CHECK_NE(*(OSSpinLock*)&opaque_storage_, 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../libsanitizer/sanitizer_common/sanitizer_internal_defs.h:292:46:
note: in definition of macro 'CHECK_IMPL'
292 | __sanitizer::u64 v1 = (__sanitizer::u64)(c1); \
| ^~
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc:406:3: note: in
expansion of macro 'CHECK_NE'
406 | CHECK_NE(*(OSSpinLock*)&opaque_storage_, 0);
| ^~~~~~~~
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc: In function 'void*
__sanitizer::internal_start_thread(void (*)(void*), void*)':
../../../../libsanitizer/sanitizer_common/sanitizer_mac.cc:578:47: warning:
cast between incompatible function types from 'void (*)(void*)' to 'void*
(*)(void*)' [-Wcast-function-type]
578 | pthread_create(&th, 0, (void*(*)(void *arg))func, arg);
| ^~~~
make[4]: *** [sanitizer_mac.lo] Error 1
>From gcc-bugs-return-638949-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 07:49:12 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #9 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Trying to continue that fix I get loads and loads of other error in the
libsanitizer :(
>From gcc-bugs-return-638950-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:12:19 2019
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Subject: [Bug target/83531] Build broken on macOS 10.13.2
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--- Comment #8 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Erik Schnetter from comment #7)
> I don't think that people didn't notice. I rather think that they gave up
> building the sanitizer. See also
> https://github.com/spack/spack/tree/develop/var/spack/repos/builtin/packages/
> gcc and
> https://github.com/spack/spack/blob/develop/var/spack/repos/builtin/packages/
> gcc/darwin/headers-10.13-fix.patch , which includes this fix automatically
> when GCC is built via Spack.
see comment #3
For the record, I build the sanitisers on all systems > Darwin10/macOS 10.6
(where it's no longer supported upstream and is now pretty broken).
However, I don't build all the older systems that often - but (for example) -
see https://gcc.gnu.org/ml/gcc-testresults/2019-02/msg00055.html
So .. I agree that we have test issues with headers [ comment #4 ] (and those
need resolving in a general way, not piecemeal) - but AFAICT bootstrap is not
broken on current 10.13.
[maybe someone is using a different version of the SDK from me?
if so, please be specific about the version of Xcode and the SDK in use,
thanks.]
>From gcc-bugs-return-638951-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:18:56 2019
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Subject: [Bug c++/89869] -fsanitize=undefined miscompilation
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-29
CC| |marxin at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, lemme take a look.
>From gcc-bugs-return-638952-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:22:56 2019
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Subject: [Bug c++/61259] Spurious "ISO C++ forbids zero-size array" warning with -pedantic
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--- Comment #3 from ilja.honkonen at fmi dot fi ---
Still seeing this with gcc 8.3.1.
>From gcc-bugs-return-638953-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:28:00 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Fri, 29 Mar 2019 08:27:00 -0000
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--- Comment #10 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jürgen Reuter from comment #9)
> Trying to continue that fix I get loads and loads of other error in the
> libsanitizer :(
I'm not sure that there's a valid "fix includes" replacement for _Atomic (sure,
you can get the code to compile - but it won't be doing what was intended).
In the short-term, I'd suggest picking up the previous version of Xcode command
line tools [e.g.10.1] (from developer.apple.com) and using the SDK from that?
While this gets fixed.
you can point to a specific SDK for configure with something like:
.../configure .... --with-sysroot=/path/to/SDK ..... CC="gcc
--sysroot=/path/to/SDK" CXX="g++ --sysroot=/path/to/SDK" (or CC="clang..
CXX="clang++).
>From gcc-bugs-return-638954-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:31:46 2019
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Fri, 29 Mar 2019 08:31:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to bin cheng from comment #7)
> I am testing below simple fix, it bypass access functions doesn't belong to
> analyzing loop_nest:
>
> diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c
> index e536b463e96..410d44f43e8 100644
> --- a/gcc/tree-data-ref.c
> +++ b/gcc/tree-data-ref.c
> @@ -4272,6 +4272,7 @@ build_classic_dist_vector_1 (struct
> data_dependence_relation *ddr,
> {
> unsigned i;
> lambda_vector init_v = lambda_vector_new (DDR_NB_LOOPS (ddr));
> + struct loop *loop = DDR_LOOP_NEST (ddr)[0];
>
> for (i = 0; i < DDR_NUM_SUBSCRIPTS (ddr); i++)
> {
> @@ -4302,6 +4303,15 @@ build_classic_dist_vector_1 (struct
> data_dependence_relation *ddr,
> return false;
> }
>
> + /* When data references are collected in a loop while data
> + dependences are analyzed in loop nest nested in the loop, we
> + would have more number of access functions than number of
> + loops. Skip access functions of loops not in the loop nest.
> +
> + See PR89725 for more information. */
> + if (flow_loop_nested_p (get_loop (cfun, var_a), loop))
> + continue;
> +
> dist = int_cst_value (SUB_DISTANCE (subscript));
> index = index_in_loop_nest (var_a, DDR_LOOP_NEST (ddr));
> *index_carry = MIN (index, *index_carry);
>
> Plus the assert in index_in_loop_nest.
I wondered about chrecs like { 1, +, { 0 +, 1 }_1 }_2 (inner loop step
or initial value evolves wrt outer loop). We'd not catch that here.
Also if the above is possible then why not simply strip those
subscripts when we build the DDR? That way the few other cases
we do index_in_loop_nest also are "fixed".
Meanwhile testing of my patch finished but shows an ICE for
FAIL: gfortran.dg/vect/pr81303.f -O scan-tree-dump-times linterchange "is
in
terchanged" 1
FAIL: gfortran.dg/vect/pr81303.f -O (internal compiler error)
FAIL: gfortran.dg/vect/pr81303.f -O (test for excess errors)
#1 0x0000000000a61759 in vec<tree_node*, va_heap, vl_embed>::operator[] (
this=0x3119f50 = {...}, ix=3)
at /space/rguenther/src/gcc-sccvn/gcc/vec.h:845
845 gcc_checking_assert (ix < m_vecpfx.m_num);
(gdb)
#3 0x0000000001f2723a in should_interchange_loops (i_idx=3, o_idx=2,
datarefs=..., i_stmt_cost=41, o_stmt_cost=5, innermost_loops_p=true,
dump_info_p=true)
at /space/rguenther/src/gcc-sccvn/gcc/gimple-loop-interchange.cc:1460
1460 tree iloop_stride = (*stride)[i_idx], oloop_stride =
(*stride)[o_idx];
where the interchange code would need further changes for my change of the
loop-nest for DDRs.
That said, can we strip subscripts for outer loops in
initialize_data_dependence_relation when we compute them?
OTOH the cases where we can ignore the subscript are not so clear
given that the outer loop behavior can very well compute
non-aliasing. So selectively pruning just the unwanted distance
vectors looks safe.
But what about similar code in add_multivariate_self_dist or
add_other_self_distances?
>From gcc-bugs-return-638955-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:34:28 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #11 from Jürgen Reuter <juergen.reuter at desy dot de> ---
(In reply to Iain Sandoe from comment #10)
> In the short-term, I'd suggest picking up the previous version of Xcode
> command line tools [e.g.10.1] (from developer.apple.com) and using the SDK
> from that? While this gets fixed.
with "while this gets fixed" you mean waiting for an update from the Apple side
(like an XCode 10.2.1 update or so), or a 'proper' fix from the gcc side?
And if it is a fix from the Apple side, how will I know that an update contains
the desired fix?
>From gcc-bugs-return-638956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 08:43:29 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Fri, 29 Mar 2019 08:43:00 -0000
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--- Comment #12 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jürgen Reuter from comment #11)
> (In reply to Iain Sandoe from comment #10)
>
> > In the short-term, I'd suggest picking up the previous version of Xcode
> > command line tools [e.g.10.1] (from developer.apple.com) and using the SDK
> > from that? While this gets fixed.
>
> with "while this gets fixed" you mean waiting for an update from the Apple
> side (like an XCode 10.2.1 update or so),\
Yes.
> or a 'proper' fix from the gcc side?
Well, this doesn't seem to be a GCC bug - but if someone can propose a
work-around, that's fine (I just have doubts that a fix includes will be
enough).
> And if it is a fix from the Apple side, how will I know that an update
> contains the desired fix?
We will only be able to figure that out by testing it - of course, if you file
a radar about it - then presumably that would be updated when it's fixed.
>From gcc-bugs-return-638958-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:15:54 2019
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Subject: [Bug c/89872] [7/8/9 Regression] GCC does not generate read access to volatile compound literal
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.5
Summary|GCC does not generate read |[7/8/9 Regression] GCC does
|access to volatile compound |not generate read access to
|literal |volatile compound literal
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
At least with -O0 this regressed with r188665.
>From gcc-bugs-return-638957-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:15:04 2019
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Subject: [Bug c++/89858] crash with libmpfr.so.6
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--- Comment #8 from Hans Buchmann <hans.buchmann at fhnw dot ch> ---
Created attachment 46054
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/proc/cpuinfo
Sincerely
Hans Buchmann
>From gcc-bugs-return-638959-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:16:08 2019
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #13 from Jürgen Reuter <juergen.reuter at desy dot de> ---
I see. For the moment, I will be downgrading to XCode 10.1 with its command
line tools, but I really hope that either you or them will be able to fix it.
If you were following the progress from Apple, maybe you could also note in
this PR in case the issue is fixed by Apple?
>From gcc-bugs-return-638960-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:17:34 2019
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Subject: [Bug c/89872] [7/8/9 Regression] GCC does not generate read access to volatile compound literal
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46055
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gcc9-pr89872.patch
Untested fix.
>From gcc-bugs-return-638961-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:20:06 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89882] New: [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 09:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89882
Bug ID: 89882
Summary: [8/9 Regression] Extra caret marker when issuing
diagnostics for the "'friend' used outside of class"
error
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc 9 and 8 emit what I believe is a superfluous marker when issuing a
diagnostic for the following invalid code:
friend void
foo ();
% g++-9.0.0-alpha20190324 -fsyntax-only ehvo8syg.cc
ehvo8syg.cc:1:1: error: 'friend' used outside of class
1 | friend void
| ^~~~~~
| ------
Or is the second line of dashes meant to give a cue that the marked substring
have to be simply removed? If so, it is seemingly inconsistent, as there's no
such lines for other invalid specifiers in the following example:
friend virtual void
foo () override;
% g++-9.0.0-alpha20190324 -fsyntax-only ehvo8syg.cc
ehvo8syg.cc:1:1: error: 'friend' used outside of class
1 | friend virtual void
| ^~~~~~
| ------
ehvo8syg.cc:1:8: error: 'virtual' outside class declaration
1 | friend virtual void
| ^~~~~~~
ehvo8syg.cc:2:8: error: virt-specifiers in 'foo' not allowed outside a class
definition
2 | foo () override;
| ^~~~~~~~
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89871] Wall + designated initializers
Date: Fri, 29 Mar 2019 09:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89871
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic,
| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-29
CC| |dmalcolm at gcc dot gnu.org
Known to work| |9.0
Ever confirmed|0 |1
Known to fail| |8.1.0, 8.2.0, 8.3.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note GCC 7 doesn't have support for non-trivial designated initializers so
not a regression. Not sure if the fix is a real fix.
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Subject: [Bug c/89872] [7/8/9 Regression] GCC does not generate read access to volatile compound literal
Date: Fri, 29 Mar 2019 09:22:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P2
>From gcc-bugs-return-638966-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:23:39 2019
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Subject: [Bug c++/89876] [8/9 Regression] ICE in convert_like_real on decltype expression involving string conversion to char*
Date: Fri, 29 Mar 2019 09:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-638964-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:23:05 2019
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Subject: [Bug c++/89875] [7/8/9 Regression] invalid typeof reference to a member of an incomplete struct accepted at function scope
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
Date: Fri, 29 Mar 2019 09:23:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dodji at gcc dot gnu.org,
| |dvyukov at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |kcc at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Component|c++ |sanitizer
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Slightly reduced test-case:
$ cat pr89869.cc
struct Object
{
Object* next = 0;
virtual ~Object() {}
};
void unlinkChild(Object* child, Object *nul)
{
( child->next ? nul: child) = child->next;
}
int main( int argc, char** argv)
{
Object a;
unlinkChild(&a, 0);
return 0;
}
UBSAN generates following original dump:
;; Function void unlinkChild(Object*, Object*) (null)
<<cleanup_point <<< Unknown tree: expr_stmt
if ((.UBSAN_VPTR (SAVE_EXPR <child>, (long unsigned int) SAVE_EXPR
<child>->_vptr.Object, 11320505648503524435, &_ZTI6Object, 3B);, SAVE_EXPR
<child>;)->next != 0B)
{
(void) (nul = (.UBSAN_VPTR (SAVE_EXPR <child>, (long unsigned int)
SAVE_EXPR <child>->_vptr.Object, 11320505648503524435, &_ZTI6Object, 3B);,
SAVE_EXPR <child>;)->next);
}
else
{
(void) (child = (.UBSAN_VPTR (SAVE_EXPR <child>, (long unsigned int)
SAVE_EXPR <child>->_vptr.Object, 11320505648503524435, &_ZTI6Object, 3B);,
SAVE_EXPR <child>;)->next);
} >>>>>;
which looks fine to me. However gimplification generates:
unlinkChild (struct Object * child, struct Object * nul)
{
struct Object * child.0;
struct Object * child.1;
child.0 = child;
_1 = child.0->_vptr.Object;
_2 = (long unsigned int) _1;
.UBSAN_VPTR (child.0, _2, 11320505648503524435, &_ZTI6Object, 3B);
_3 = child.0->next;
if (_3 != 0B) goto <D.2727>; else goto <D.2728>;
<D.2727>:
child.1 = child;
_4 = child.1->_vptr.Object;
_5 = (long unsigned int) _4;
.UBSAN_VPTR (child.1, _5, 11320505648503524435, &_ZTI6Object, 3B);
nul = child.1->next;
goto <D.2730>;
<D.2728>:
_6 = child.1->_vptr.Object;
_7 = (long unsigned int) _6;
.UBSAN_VPTR (child.1, _7, 11320505648503524435, &_ZTI6Object, 3B);
child = child.1->next;
<D.2730>:
}
which is wrong because child.1 is used in <D.2728> uninitialized. Richi is it a
gimplification bug?
Or is the generic wrongly generated?
>From gcc-bugs-return-638967-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:27:14 2019
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Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P1
Status|ASSIGNED |NEW
Known to fail| |7.4.0, 8.3.0, 9.0
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Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
Date: Fri, 29 Mar 2019 09:31:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If there is a SAVE_EXPR used in both arms of the conditional and not used
before that, then it is a bug in the generic code.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89858] crash with libmpfr.so.6
Date: Fri, 29 Mar 2019 09:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
So you compiled gmp for a different CPU. IIRC it auto-detects that based on
the host you compile on unless you use --enable-fat. Please refer to the GMP
installation instructions for details.
Not a GCC bug.
>From gcc-bugs-return-638970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:36:08 2019
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Subject: [Bug c++/89882] [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 09:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-638971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:38:51 2019
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From: "hans.buchmann at fhnw dot ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89858] crash with libmpfr.so.6
Date: Fri, 29 Mar 2019 09:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858
--- Comment #10 from Hans Buchmann <hans.buchmann at fhnw dot ch> ---
Thank you.
Hans Buchmann
>From gcc-bugs-return-638972-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 09:43:26 2019
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From: "joerg.richter@pdv-fs.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89883] New: Excessive candidates for ambiguous overload in error message
Date: Fri, 29 Mar 2019 09:43:00 -0000
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Bug ID: 89883
Summary: Excessive candidates for ambiguous overload in error
message
Product: gcc
Version: 8.3.0
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This code:
#include <ostream>
enum Foo
{
Bar
};
std::ostream operator<<( std::ostream& os, Foo );
std::ostream operator<<( std::ostream& os, Foo const& );
void func( std::ostream& os )
{
os << Bar;
}
Generates around 70 lines of error message.
But in this case there are really only 2 conflicting overloads. One for 'Foo'
and one for 'Foo const&'. They both match better than any other overload.
Can GCC output just the two more matching overloads in this case?
>From gcc-bugs-return-638973-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:01:16 2019
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Subject: [Bug lto/89884] New: g++.dg/lto/pr89335 FAILs
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Bug ID: 89884
Summary: g++.dg/lto/pr89335 FAILs
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
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CC: hubicka at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Target: *-*-solaris2.*
The new g++.dg/lto/pr89335 test FAILs on Solaris with the vendor ld, both 32
and
64-bit sparc and x86:
+FAIL: g++.dg/lto/pr89335 cp_lto_pr89335_0.o assemble, -O2 -flto
-Wsuggest-final-methods
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/lto/pr89335_0.C:9:7: warning:
Declaring virtual destructor of 'struct List' final would enable
devirtualization of 1 call [-Wsuggest-final-methods]
The failure can also be reproduced on Linux/x86_64 with -fno-use-linker-plugin.
>From gcc-bugs-return-638974-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:01:20 2019
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Subject: [Bug lto/89884] g++.dg/lto/pr89335 FAILs
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-638975-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:19:43 2019
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Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
Date: Fri, 29 Mar 2019 10:19:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem is that for the COND_EXPR as lvalue, cp_build_modify_expr does:
/* Handle (a ? b : c) used as an "lvalue". */
case COND_EXPR:
{
/* Produce (a ? (b = rhs) : (c = rhs))
except that the RHS goes through a save-expr
so the code to compute it is only emitted once. */
It uses stabilize_expr on the rhs, but this is before ubsan instrumentation, so
there is nothing to stabilize.
And then we emit:
cond = build_conditional_expr
(input_location, TREE_OPERAND (lhs, 0),
cp_build_modify_expr (loc, TREE_OPERAND (lhs, 1),
modifycode, rhs, complain),
cp_build_modify_expr (loc, TREE_OPERAND (lhs, 2),
modifycode, rhs, complain),
complain);
so rhs is a tree shared in two COND_EXPR branches.
And then we later instrument this and wrap in a SAVE_EXPR for VPTR
instrumentation.
>From gcc-bugs-return-638976-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:25:14 2019
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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--- Comment #24 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC we used to say sth like "unable to find a register to spill" for
-fschedule-insns introduced issues. Even the ICE with max. number of
LRA passes is nicer than compiling indefinitely.
So I wonder if we can at least avoid endless work in IRA/LRA and
maybe even give a sensible hint to the user (try disabling -fschedule-insns).
>From gcc-bugs-return-638977-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:27:52 2019
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Priority|P3 |P2
--- Comment #26 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think we "fixed" multiple instances of the underlying issue(s) and Honza
promised a "real" fix for the extern inline issue. Don't we throw away
extern inline bodies after early inlining now?
>From gcc-bugs-return-638978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:35:45 2019
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Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46056
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46056&action=edit
gcc9-pr89869.patch
Untested fix.
>From gcc-bugs-return-638979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:39:41 2019
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Subject: [Bug c++/89871] Wall + designated initializers
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In any case we want the testcase into the testsuite on the trunk.
>From gcc-bugs-return-638980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:48:00 2019
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Subject: [Bug target/89400] [7/8/9 Regression] ICE: output_operand: invalid %-code with -march=armv6kz -mthumb -munaligned-access
Date: Fri, 29 Mar 2019 10:48:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |rearnsha at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Could somebody from ARM have a look at this? I'm afraid above is as far as I
can go without deep knowledge of the arch.
>From gcc-bugs-return-638981-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 10:54:12 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 29 Mar 2019 10:54:00 -0000
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--- Comment #28 from Richard Biener <rguenth at gcc dot gnu.org> ---
I am considering the following as a fix for the GIMPLE issue, does that
look acceptable? I think a binary flag as suggested by Jakub results
in somewhat unpredictable behavior with regard to inlining I'd not
appreciate given inlining a function with hard-reg vars would suddenly
make asms in the caller subject to virtual operands... (not sure if we'd
not even ICE on that situation at the moment). Similar situation occurs
if inlining an asm with hardreg clobbers from a function w/o local reg
vars into a function with local reg vars -- that function could even
be pure/const but would have to be treated not so.
So - mine for the GIMPLE part.
Any comments?
Index: gcc/gimple.c
===================================================================
--- gcc/gimple.c (revision 270012)
+++ gcc/gimple.c (working copy)
@@ -2727,11 +2738,16 @@ gimple_asm_clobbers_memory_p (const gasm
{
unsigned i;
+ /* While strictly speaking only a "memory" clobber denotes clobbering
+ memory in GIMPLE we also treat local hard-register variables as
+ memory so simply treat all clobbers as memory. The only exception
+ is the special clobber "cc". */
for (i = 0; i < gimple_asm_nclobbers (stmt); i++)
{
tree op = gimple_asm_clobber_op (stmt, i);
- if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0)
- return true;
+ if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "cc") == 0)
+ continue;
+ return true;
}
/* Non-empty basic ASM implicitly clobbers memory. */
>From gcc-bugs-return-638983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:01:20 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
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--- Comment #29 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #28)
> Any comments?
> --- gcc/gimple.c (revision 270012)
> +++ gcc/gimple.c (working copy)
> @@ -2727,11 +2738,16 @@ gimple_asm_clobbers_memory_p (const gasm
> {
> unsigned i;
>
> + /* While strictly speaking only a "memory" clobber denotes clobbering
> + memory in GIMPLE we also treat local hard-register variables as
> + memory so simply treat all clobbers as memory. The only exception
> + is the special clobber "cc". */
> for (i = 0; i < gimple_asm_nclobbers (stmt); i++)
> {
> tree op = gimple_asm_clobber_op (stmt, i);
> - if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0)
> - return true;
> + if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "cc") == 0)
> + continue;
> + return true;
> }
>
> /* Non-empty basic ASM implicitly clobbers memory. */
This will affect not just tree-ssa-operands.c, where it is ok I guess, as it
will just mean a vdef and the alias oracle then can figure out if something
aliases or not, but also ipa-pure-const.c and sanopt. Do we want to say that
functions with register clobbers are no longer pure/const and for sanopt
consider them to be potential spots to free memory?
>From gcc-bugs-return-638982-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:01:19 2019
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Subject: =?UTF-8?B?W0J1ZyBkcml2ZXIvODk4NjFdIGcrKy04OiBlcnJvcjogdW5yZWNvZ25pemVk?= =?UTF-8?B?IGNvbW1hbmQgbGluZSBvcHRpb24g4oCYLWZzYW5pdGl6ZeKAmQ==?Date: Fri, 29 Mar 2019 11:01:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
Known to fail| |7.4.0, 8.3.0, 9.0
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I've just sent a patch to ML:
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01401.html
>From gcc-bugs-return-638984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:10:49 2019
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Fri, 29 Mar 2019 11:10:00 -0000
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--- Comment #14 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Unfortunately, the downgrade to XCode 10.1 didn't work, I still get the
buggy/problematic headers. That is really annoying, because now I am stuck with
my development.
>From gcc-bugs-return-638985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:16:11 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89882] [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 11:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-29
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r250282.
>From gcc-bugs-return-638986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:19:09 2019
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Fri, 29 Mar 2019 11:19:00 -0000
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--- Comment #15 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Sorry for the spam, now I got it, there was something old (i.e. new) lingering
around still. Now, back to XCode 10.1 and command line tools from October 2018
with a different include/sys. Started compilation/bootstrapping of gcc again,
hopefully it is working now.
>From gcc-bugs-return-638987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:20:36 2019
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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--- Comment #25 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #24)
> IIRC we used to say sth like "unable to find a register to spill" for
> -fschedule-insns introduced issues. Even the ICE with max. number of
> LRA passes is nicer than compiling indefinitely.
>
> So I wonder if we can at least avoid endless work in IRA/LRA and
> maybe even give a sensible hint to the user (try disabling -fschedule-insns).
The patch in Comment #20 is the correct solution, as explained in Comment #19.
>From gcc-bugs-return-638988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:27:37 2019
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Subject: [Bug c++/89882] [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 11:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, reading that change, it seems that it was exactly what was added by
that patch and nothing else, a fix-it hint that the keyword should be removed.
So, is the PR about not being to understand it is a fix-it remove hint (which
is obvious if you e.g. use -fdiagnostics-generate-patch or
-fdiagnostics-parseable-fixits), something else?
>From gcc-bugs-return-638989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:28:03 2019
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Fri, 29 Mar 2019 11:28:00 -0000
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--- Comment #12 from joey.ye.cc at gmail dot com ---
Feng,
Have you made any progress on these problems? If advice is still
needed, I would suggest you share more details about these problems,
and people like Bin and Richi and Richard Sandiford may provide you
some advice.
Thanks,
Joey
On Sat, Feb 2, 2019 at 4:23 AM fxue at os dot amperecomputing.com
<gcc-bugzilla@gcc.gnu.org> wrote:
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134
>
> --- Comment #11 from Feng Xue <fxue at os dot amperecomputing.com> ---
> Actually, I am working on adding optimizations to enable this opportunity,
> which can be discomposed to two sub-problems: breaking-loop transformation
> mentioned above, and empty-loop elimination. I have worked out several patches,
> but for the second thing, since it seems to be more aggressive than gcc
> currently implemented, I need advices and feedbacks from the community.
>From gcc-bugs-return-638990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:29:49 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 29 Mar 2019 11:29:00 -0000
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--- Comment #30 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 29 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87984
>
> --- Comment #29 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #28)
> > Any comments?
>
> > --- gcc/gimple.c (revision 270012)
> > +++ gcc/gimple.c (working copy)
> > @@ -2727,11 +2738,16 @@ gimple_asm_clobbers_memory_p (const gasm
> > {
> > unsigned i;
> >
> > + /* While strictly speaking only a "memory" clobber denotes clobbering
> > + memory in GIMPLE we also treat local hard-register variables as
> > + memory so simply treat all clobbers as memory. The only exception
> > + is the special clobber "cc". */
> > for (i = 0; i < gimple_asm_nclobbers (stmt); i++)
> > {
> > tree op = gimple_asm_clobber_op (stmt, i);
> > - if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0)
> > - return true;
> > + if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "cc") == 0)
> > + continue;
> > + return true;
> > }
> >
> > /* Non-empty basic ASM implicitly clobbers memory. */
>
> This will affect not just tree-ssa-operands.c, where it is ok I guess, as it
> will just mean a vdef and the alias oracle then can figure out if something
> aliases or not, but also ipa-pure-const.c and sanopt. Do we want to say that
> functions with register clobbers are no longer pure/const and for sanopt
> consider them to be potential spots to free memory?
For ipa-pure-const definitely - the calls need to be barriers for
local reg sets. For sanopt a memory clobber isn't a very good
indication for a spot to free memory anyways...
Btw, getting back optimization for cases with hardreg clobbers would
need to be put into the alias oracle then.
>From gcc-bugs-return-638991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:32:31 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
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>From gcc-bugs-return-638992-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:37:14 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-638994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:38:35 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89292 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638993-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 11:38:34 2019
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Subject: [Bug middle-end/89292] [9 regression] test case gcc.target/powerpc/rs6000-fpint.c fails after r268705
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 89271 ***
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Subject: [Bug c++/89722] [8/9 regression] strange warning: type qualifiers ignored on cast result type [-Wignored-qualifiers]
Date: Fri, 29 Mar 2019 11:42:00 -0000
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Subject: [Bug libstdc++/89851] [9 Regression] std::variant comparison operators violate [variant.relops]
Date: Fri, 29 Mar 2019 11:43:00 -0000
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 29 11:42:51 2019
New Revision: 270013
URL: https://gcc.gnu.org/viewcvs?rev=270013&root=gcc&view=rev
Log:
PR rtl-optimization/87485
* function.c (expand_function_end): Move stack_protect_epilogue
before loading of return value into hard register(s).
* gcc.dg/pr87485.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr87485.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/function.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89868] -fsanitizedress inhibits C++ unhandled exception core dump
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--- Comment #6 from Jonny Grant <jg at jguk dot org> ---
(In reply to Andrew Pinski from comment #5)
> Actually it comes from the shell.
>
> e.g. from bash:
> if ((WIFSTOPPED (show->status) == 0) &&
> (WIFCONTINUED (show->status) == 0) &&
> WIFCORED (show->status))
> fprintf (stream, _("(core dumped) "));
>
> As WIFCORED is set on status.
>
> WIFCORED is really a define for WCOREDUMP.
>
> http://man7.org/linux/man-pages/man2/waitpid.2.html
>
> So basically the kernel does not communicate why a core is not dumped to the
> waiting (parent) process.
Hi Andrew
Thank you for tracking that down. It is a shame, there isn't a WCORETOOLARGE,
or WUNABLETOCOREDUMP etc.. I wonder really how big the core must be to be
unable to save
Could I ask, if you run the test case with Asan, do you see the same behaviour?
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Fri, 29 Mar 2019 11:51:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Should get rid of that FAIL in any way.
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Subject: [Bug middle-end/89725] ICE in get_fnname_from_decl, at varasm.c:1723
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--- Comment #9 from bin cheng <amker at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #8)
> (In reply to bin cheng from comment #7)
> > I am testing below simple fix, it bypass access functions doesn't belong to
> > analyzing loop_nest:
> >
> > diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c
> > index e536b463e96..410d44f43e8 100644
> > --- a/gcc/tree-data-ref.c
> > +++ b/gcc/tree-data-ref.c
> > @@ -4272,6 +4272,7 @@ build_classic_dist_vector_1 (struct
> > data_dependence_relation *ddr,
> > {
> > unsigned i;
> > lambda_vector init_v = lambda_vector_new (DDR_NB_LOOPS (ddr));
> > + struct loop *loop = DDR_LOOP_NEST (ddr)[0];
> >
> > for (i = 0; i < DDR_NUM_SUBSCRIPTS (ddr); i++)
> > {
> > @@ -4302,6 +4303,15 @@ build_classic_dist_vector_1 (struct
> > data_dependence_relation *ddr,
> > return false;
> > }
> >
> > + /* When data references are collected in a loop while data
> > + dependences are analyzed in loop nest nested in the loop, we
> > + would have more number of access functions than number of
> > + loops. Skip access functions of loops not in the loop nest.
> > +
> > + See PR89725 for more information. */
> > + if (flow_loop_nested_p (get_loop (cfun, var_a), loop))
> > + continue;
> > +
> > dist = int_cst_value (SUB_DISTANCE (subscript));
> > index = index_in_loop_nest (var_a, DDR_LOOP_NEST (ddr));
> > *index_carry = MIN (index, *index_carry);
> >
> > Plus the assert in index_in_loop_nest.
>
> I wondered about chrecs like { 1, +, { 0 +, 1 }_1 }_2 (inner loop step
> or initial value evolves wrt outer loop). We'd not catch that here.
>
> Also if the above is possible then why not simply strip those
> subscripts when we build the DDR? That way the few other cases
> we do index_in_loop_nest also are "fixed".
>
> Meanwhile testing of my patch finished but shows an ICE for
>
> FAIL: gfortran.dg/vect/pr81303.f -O scan-tree-dump-times linterchange
> "is in
> terchanged" 1
> FAIL: gfortran.dg/vect/pr81303.f -O (internal compiler error)
> FAIL: gfortran.dg/vect/pr81303.f -O (test for excess errors)
>
> #1 0x0000000000a61759 in vec<tree_node*, va_heap, vl_embed>::operator[] (
> this=0x3119f50 = {...}, ix=3)
> at /space/rguenther/src/gcc-sccvn/gcc/vec.h:845
> 845 gcc_checking_assert (ix < m_vecpfx.m_num);
> (gdb)
> #3 0x0000000001f2723a in should_interchange_loops (i_idx=3, o_idx=2,
> datarefs=..., i_stmt_cost=41, o_stmt_cost=5, innermost_loops_p=true,
> dump_info_p=true)
> at /space/rguenther/src/gcc-sccvn/gcc/gimple-loop-interchange.cc:1460
> 1460 tree iloop_stride = (*stride)[i_idx], oloop_stride =
> (*stride)[o_idx];
>
> where the interchange code would need further changes for my change of the
> loop-nest for DDRs.
>
> That said, can we strip subscripts for outer loops in
> initialize_data_dependence_relation when we compute them?
> OTOH the cases where we can ignore the subscript are not so clear
> given that the outer loop behavior can very well compute
Agree there may be more opportunities to disambiguate dependence with more
SCEVed access function of outer loop.
> non-aliasing. So selectively pruning just the unwanted distance
> vectors looks safe.
As you mentioned, multivariate needs to be handled with outer loop SCEV handled
as some kind of invariant. This is necessary no matter we bypass it in dist
vector construction or DDR initialization/computation. As you suggested, we
can't undo it yet...
>
> But what about similar code in add_multivariate_self_dist or
> add_other_self_distances?
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From: "jiangning.liu at amperecomputing dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Fri, 29 Mar 2019 12:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134
--- Comment #13 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
Feng already sent out the 1st patch at
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg00541.html .
But the 2nd one is related to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89713 .
>From gcc-bugs-return-639003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 12:20:33 2019
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Fri, 29 Mar 2019 12:20:00 -0000
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The test adjustment so that it only checks what the PR85683 change really meant
to check for would be:
2019-03-29 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/89865
* gcc.target/i386/pr49095.c: Include in scan-assembler-times patterns
the first argument register, so that occassional spills/fills are
ignored.
--- gcc/testsuite/gcc.target/i386/pr49095.c.jj 2018-10-08 15:18:22.074105125
+0200
+++ gcc/testsuite/gcc.target/i386/pr49095.c 2019-03-29 13:11:54.941597147
+0100
@@ -73,5 +73,5 @@ G (long)
/* { dg-final { scan-assembler-not "test\[lq\]" } } */
/* The {f,h}{char,short,int,long}xor functions aren't optimized into
a RMW instruction, so need load, modify and store. FIXME eventually. */
-/* { dg-final { scan-assembler-times "\\), %" 57 { target { ia32 } } } } */
-/* { dg-final { scan-assembler-times "\\), %" 45 { target { ! ia32 } } } } */
+/* { dg-final { scan-assembler-times "\\(%eax\\), %" 12 { target { ia32 } } }
} */
+/* { dg-final { scan-assembler-times "\\(%\[re\]di\\), %" 8 { target { ! ia32
} } } } */
Now, for ia32 we've regressed even there, as we emit those 8 RMWs for
{f,h}{char,short,int,long}xor,
like for m64, but also 4 RMWs for f{char,short,int,long}minus.
Will look at thos next.
>From gcc-bugs-return-639004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 12:21:43 2019
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Subject: [Bug bootstrap/50229] [7/8/9 Regression] Can't cross compile for i686-apple-darwin10 from x86_64-redhat_linux
Date: Fri, 29 Mar 2019 12:21:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/81800] [8/9 regression] on aarch64 ilp32 lrint should not be inlined as two instructions
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-639006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 12:25:11 2019
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Subject: [Bug c++/84707] [8 Regression] internal compiler error: Segmentation fault (tree_check()/duplicate_decls())
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-valid-code |rejects-valid
Priority|P1 |P2
Status|REOPENED |RESOLVED
Known to work| |7.4.0, 8.3.0, 9.0
Resolution|--- |FIXED
Target Milestone|8.0 |8.3
Known to fail| |8.1.0, 8.2.0
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 8.3 accepts it w/o error.
>From gcc-bugs-return-639007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 12:35:31 2019
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Subject: [Bug middle-end/89725] [8/9 Regression] ICE in get_fnname_from_decl, at varasm.c:1723
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Target Milestone|--- |8.4
Summary|ICE in |[8/9 Regression] ICE in
|get_fnname_from_decl, at |get_fnname_from_decl, at
|varasm.c:1723 |varasm.c:1723
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Interchange is new in GCC 8 so a regression for the memory corruption there.
>From gcc-bugs-return-639008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 12:49:04 2019
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Subject: [Bug libstdc++/86164] std::regex crashes when matching long lines
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Giuliano Belinassi <giuliano.belinassi at usp dot br> changed:
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CC| |giuliano.belinassi at usp dot br
--- Comment #7 from Giuliano Belinassi <giuliano.belinassi at usp dot br> ---
It seems that the issue is the backtracking required by the NFA, as it enters
in a deep recursion when calling _M_dfs in _M_main_dispatch
(regex_executor.tcc).
Maybe moving the DFS stack from the recursion stack to the heap and use an
iterative DFS could fix this, but converting the NFA to DFA may be a better
choice, as it removes the backtracking requirement when iterating with the
string.
>From gcc-bugs-return-639010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:06:16 2019
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Subject: [Bug driver/89885] --help=warning prints wrongly default values for options set via e.g. -Wall or -Wextra
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Status|UNCONFIRMED |ASSIGNED
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Ever confirmed|0 |1
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89885
Bug ID: 89885
Summary: --help=warning prints wrongly default values for
options set via e.g. -Wall or -Wextra
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
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One example:
$ gcc --help=warning -Wall -Wextra -Q | grep Wcatch-v
-Wcatch-value
-Wcatch-value=<0,3> 0
So it claims the value is 0. But:
$ gcc -Wall -Wextra -Werror
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/warn/Wcatch-value-1.C
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/warn/Wcatch-value-1.C: In
function ‘void foo()’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/warn/Wcatch-value-1.C:13:10:
error: catching polymorphic type ‘struct B’ by value [-Werror=catch-value=]
13 | catch (B) {} // { dg-warning "catching polymorphic type" }
| ^
Issues is that option common_handle_option_auto is called from:
#0 common_handle_option_auto (opts=0x246be40 <global_options>,
opts_set=0x246aea0 <global_options_set>, decoded=0x7fffffffd5e0, lang_mask=32,
kind=0, loc=0, handlers=0x7fffffffd810, dc=0x246cf00
<global_diagnostic_context>) at options.c:16459
#1 0x00000000018466a4 in common_handle_option (opts=0x246be40
<global_options>, opts_set=0x246aea0 <global_options_set>,
decoded=0x7fffffffd5e0, lang_mask=32, kind=0, loc=0, handlers=0x7fffffffd810,
dc=0x246cf00 <global_diagnostic_context>, target_option_override_hook=
0x124b510 <ix86_option_override()>) at
/home/marxin/Programming/gcc/gcc/opts.c:2807
#2 0x000000000184c5ef in handle_option (opts=0x246be40 <global_options>,
opts_set=0x246aea0 <global_options_set>, decoded=0x7fffffffd5e0, lang_mask=32,
kind=0, loc=0, handlers=0x7fffffffd810, generated_p=true, dc=0x246cf00
<global_diagnostic_context>)
at /home/marxin/Programming/gcc/gcc/opts-common.c:1104
#3 0x000000000184c69f in handle_generated_option (opts=0x246be40
<global_options>, opts_set=0x246aea0 <global_options_set>, opt_index=594,
arg=0x0, value=0, lang_mask=32, kind=0, loc=0, handlers=0x7fffffffd810,
generated_p=true, dc=0x246cf00 <global_diagnostic_context>)
at /home/marxin/Programming/gcc/gcc/opts-common.c:1130
But --help options are directly printed in:
#0 print_filtered_help (include_flags=131072, exclude_flags=0, any_flags=0,
columns=272, opts=0x21d70c0 <global_options>, lang_mask=16) at
/home/marxin/Programming/gcc/gcc/opts.c:1303
#1 0x000000000162173e in print_specific_help (include_flags=131072,
exclude_flags=0, any_flags=0, opts=0x21d70c0 <global_options>, lang_mask=16) at
/home/marxin/Programming/gcc/gcc/opts.c:1683
#2 0x0000000001622af5 in common_handle_option (opts=0x21d70c0
<global_options>, opts_set=0x21d6120 <global_options_set>, decoded=0x21ef780,
lang_mask=16, kind=0, loc=0, handlers=0x7fffffffd820, dc=0x21d8180
<global_diagnostic_context>, target_option_override_hook=
0x1032fc0 <ix86_option_override()>) at
/home/marxin/Programming/gcc/gcc/opts.c:2244
Correct behavior would be to print --help late after all is set. Ideally in
finish_options.
>From gcc-bugs-return-639011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:25:17 2019
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Subject: [Bug c++/89876] [8/9 Regression] ICE in convert_like_real on decltype expression involving string conversion to char*
Date: Fri, 29 Mar 2019 13:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89876
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-29
CC| |mpolacek at gcc dot gnu.org
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Ever confirmed|0 |1
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I have a fix for the ICE.
>From gcc-bugs-return-639012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:27:44 2019
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Subject: [Bug c++/89871] Wall + designated initializers
Date: Fri, 29 Mar 2019 13:27:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I'll add the test to trunk.
>From gcc-bugs-return-639013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:40:43 2019
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Subject: [Bug c/89886] New: the local array data will be laid in different section by different optimization level
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89886
Bug ID: 89886
Summary: the local array data will be laid in different section
by different optimization level
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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Created attachment 46057
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46057&action=edit
simple testcase
file the simple testcase dd.c, compiled with the following command:
pekpcsi00002:~ # /opt/buildtools/gcc-7.3.0/bin/gcc dd.c -O2 -o O2.s -S
pekpcsi00002:~ # /opt/buildtools/gcc-7.3.0/bin/gcc dd.c -O0 -o O0.s -S
we'll see that the aucSubFrmType.1820 in assemble O2.s is laid in section
rodata, while in assemble O0.s is laid in section data.
>From gcc-bugs-return-639014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:41:41 2019
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Subject: [Bug c/89887] New: the local array data will be laid in different section by different optimization level
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Bug ID: 89887
Summary: the local array data will be laid in different section
by different optimization level
Product: gcc
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file the simple testcase dd.c, compiled with the following command:
pekpcsi00002:~ # /opt/buildtools/gcc-7.3.0/bin/gcc dd.c -O2 -o O2.s -S
pekpcsi00002:~ # /opt/buildtools/gcc-7.3.0/bin/gcc dd.c -O0 -o O0.s -S
we'll see that the aucSubFrmType.1820 in assemble O2.s is laid in section
rodata, while in assemble O0.s is laid in section data.
>From gcc-bugs-return-639015-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:45:49 2019
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
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vfdff <zhongyunde at huawei dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from vfdff <zhongyunde at huawei dot com> ---
Created attachment 46058
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46058&action=edit
picture shows the bug
// simple test case
typedef unsigned char UINT8;
typedef unsigned short UINT16;
typedef unsigned int UINT32;
typedef signed char INT8;
typedef signed short INT16;
typedef signed int INT32;
typedef float FLOAT;
typedef double DOUBLE;
typedef char CHAR;
typedef unsigned char UCHAR;
typedef unsigned int BOOL;
typedef unsigned long long UINT64;
typedef signed long long INT64;
typedef int INT;
typedef enum
{
LBB_EN_UP_DOWN_CONFIG0 = 0,
LBB_EN_UP_DOWN_CONFIG1 = 1,
LBB_EN_UP_DOWN_CONFIG2 = 2,
LBB_EN_UP_DOWN_CONFIG3 = 3,
LBB_EN_UP_DOWN_CONFIG4 = 4,
LBB_EN_UP_DOWN_CONFIG5 = 5,
LBB_EN_UP_DOWN_CONFIG6 = 6,
LBB_EN_UP_DOWN_CONFIG_BUTT
}LBB_EN_UP_DOWN_CONFIG;
UINT32 test (UINT32 uwUpDownConfig, UINT32 uwSubFrmNum)
{
static UINT8 aucSubFrmType[LBB_EN_UP_DOWN_CONFIG_BUTT][(10)] =
{
{0, 1, 2, 2, 2, 0, 1, 2, 2, 2},
{0, 1, 2, 2, 0, 0, 1, 2, 2, 0},
{0, 1, 2, 0, 0, 0, 1, 2, 0, 0},
{0, 1, 2, 2, 2, 0, 0, 0, 0, 0},
{0, 1, 2, 2, 0, 0, 0, 0, 0, 0},
{0, 1, 2, 0, 0, 0, 0, 0, 0, 0},
{0, 1, 2, 2, 2, 0, 1, 2, 2, 0}
};
return aucSubFrmType[uwUpDownConfig][uwSubFrmNum];
}
>From gcc-bugs-return-639016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:53:10 2019
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
Date: Fri, 29 Mar 2019 13:53:00 -0000
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--- Comment #2 from vfdff <zhongyunde at huawei dot com> ---
Add option -fno-toplevel-reorder for O2, then aucSubFrmType.1820 will also be
placed in section data.
/opt/buildtools/gcc-7.3.0/bin/gcc dd.c -O2 -S -fno-toplevel-reorder
>From gcc-bugs-return-639017-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 13:58:04 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89864
--- Comment #16 from Erik Schnetter <schnetter at gmail dot com> ---
The proper way to fix this via fixinclude is to replace declarations such as
_Atomic u_long
with
_Atomic(u_long)
which is still legal in C. In C++, one can then add
#include <stdatomic>
#ifndef _Atomic
#define _Atomic(T) std::atomic< T >
#endif
to create proper C++ code.
>From gcc-bugs-return-639018-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 14:23:36 2019
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Subject: [Bug c++/89882] [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 14:23:00 -0000
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
As Jakub notes, it's a deletion fix-it hint.
It's suggesting the deletion of the same range as that of the primary location
of the diagnostic, so arguably there's some redundancy there.
I wonder if there's a better way to present this information, but I don't have
any ideas at the moment.
>From gcc-bugs-return-639019-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 14:34:01 2019
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Subject: [Bug fortran/77504] [7/8/9 Regression] "is used uninitialized" with allocatable string and array constructors
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Jeffrey A. Law <law at redhat dot com> changed:
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Subject: [Bug target/83033] aarch64/cortex-a57-fma-steering.c: 3 * poor C++ style ?
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Andrea Corallo <andrea.corallo at arm dot com> changed:
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--- Comment #1 from Andrea Corallo <andrea.corallo at arm dot com> ---
Path proposed
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01402.html
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Subject: [Bug target/83033] aarch64/cortex-a57-fma-steering.c: 3 * poor C++ style ?
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--- Comment #2 from Andrea Corallo <andrea.corallo at arm dot com> ---
Patch proposed
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01402.html
>From gcc-bugs-return-639022-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 15:06:53 2019
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46059
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46059&action=edit
gcc9-pr89865.patch
Peepholes (on top of the above testcase patch) that fix up f*minus on ia32.
>From gcc-bugs-return-639023-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 15:24:55 2019
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Subject: [Bug c++/89871] Wall + designated initializers
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Mar 29 15:24:00 2019
New Revision: 270019
URL: https://gcc.gnu.org/viewcvs?rev=270019&root=gcc&view=rev
Log:
PR c++/89871
* g++.dg/cpp2a/desig14.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/desig14.C
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-639024-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 15:27:34 2019
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Yes the optimization level does change the fact that array can be found not be
touched and moved to the read only section. This is not a bug.
I dont see a problem that this would cause. Can you explain why you think this
is wrong?
>From gcc-bugs-return-639025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 15:38:12 2019
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
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--- Comment #20 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I'll be working on this.
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Subject: [Bug target/83033] aarch64/cortex-a57-fma-steering.c: 3 * poor C++ style ?
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
taking the patch as confirmation
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Subject: [Bug c++/89882] [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 16:22:00 -0000
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--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Jakub Jelinek from comment #2)
> So, is the PR about not being to understand it is a fix-it remove hint
> (which is obvious if you e.g. use -fdiagnostics-generate-patch or
> -fdiagnostics-parseable-fixits), something else?
The second line of dashes have admittedly confused me at first. I've got a
suspicion that it actually may be a remove hint, but then adding equally
superfluous virtual or override specifiers yielded no such hint, which made me
confident that there's some bug in there anyway, either in emitting those
mysterious dashes when they're not needed or not emitting them when they should
be printed.
It turned out that those dashes are really a remove hint, and the change since
gcc 7 was intentional, so I'd just close the PR as INVALID.
Sorry, I'd rather stay aside from the UX issues and their discussion, and I
won't insist that the current diagnostic is hard to understand. I also don't
have any suggestions for improvement here beside the one to mark both the
offending keyword and an adjacent one (either left- or rightward) and propose
to replace them w/ only that adjacent - which is also far from ideal. Or maybe
the line number column could be somehow abused, like:
1 | friend void
(---) → | ^~~~~~
which is arguably not any clear than the original.
>From gcc-bugs-return-639028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 16:25:13 2019
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Subject: [Bug c++/89882] [8/9 Regression] Extra caret marker when issuing diagnostics for the "'friend' used outside of class" error
Date: Fri, 29 Mar 2019 16:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ok then.
>From gcc-bugs-return-639029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 16:25:22 2019
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Subject: [Bug c/89888] New: When switch controlling expression is promoted from type narrower than int, GCC does not diagnose identical cases
Date: Fri, 29 Mar 2019 16:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89888
Bug ID: 89888
Summary: When switch controlling expression is promoted from
type narrower than int, GCC does not diagnose
identical cases
Product: gcc
Version: 8.3.0
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Consider the C function:
long long X;
void f(unsigned char x)
{
switch(x) {
case -1: X=-1; break;
case 0xffffffff: X=0xffffffff; break;
}
}
The controlling expression of the switch, x, has type unsigned char and is
promoted to int before its type being used as reference for the constants -1
and 0xffffffff. This is according to C11 6.8.4.2:5
(https://port70.net/~nsz/c/c11/n1570.html#6.8.4.2p5 )
GCC 8.3 emits very good warnings about each of the constants being, after
conversion, outside the range of an unsigned int and thus unreachable:
<source>: In function 'f':
<source>:6:5: warning: case label value is less than minimum value for type
case -1: X=-1; break;
^~~~
<source>:7:5: warning: case label value is less than minimum value for type
case 0xffffffff: X=0xffffffff; break;
^~~~
(Compiler Explorer link: https://gcc.godbolt.org/z/gvnvoa )
However, GCC does not warn about the labels being identical after conversion. I
feel silly reporting this, because it only happens for discarded labels that
were unreachable, and there isn't any ambiguity about the meaning of the
program. Still, the C11 clause 6.8.4.2:3 about identical switch case labels
(after conversion) (https://port70.net/~nsz/c/c11/n1570.html#6.8.4.2p3 ) is
under a “Constraints†heading, so depending how much GCC cares about adhering
to the letter of the standard, it may want to diagnose this situation.
Clang diagnoses this situation and emits an “errorâ€:
<source>:7:10: error: duplicate case value '-1'
Clang also emits two misleading warnings about the constants -1 and 0xffffffff.
The wording of these warnings is so misleading that it can be considered a
Clang bug, which has been reported in the appropriate place.
>From gcc-bugs-return-639030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 16:31:26 2019
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Subject: [Bug c/89888] When switch controlling expression is promoted from type narrower than int, GCC does not diagnose identical cases
Date: Fri, 29 Mar 2019 16:31:00 -0000
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--- Comment #1 from Pascal Cuoq <pascal_cuoq at hotmail dot com> ---
errata: “outside the range of an unsigned charâ€
>From gcc-bugs-return-639031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 16:41:24 2019
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Subject: [Bug target/89838] [ARC] ICE building glibc testsuite
Date: Fri, 29 Mar 2019 16:41:00 -0000
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--- Comment #1 from Claudiu Zissulescu <claziss at gmail dot com> ---
It is confirmed also in gcc mainline branch:
tst-tls1.c: In function ‘check_s’:
tst-tls1.c:65:1: error: unrecognizable insn:
(insn 36 35 37 6 (set (reg/f:SI 163)
(plus:SI (plus:SI (reg:SI 25 r25)
(reg:SI 164))
(const_int 512 [0x200]))) "tst-tls1.c":64:3 -1
(expr_list:REG_EQUAL (const:SI (plus:SI (symbol_ref:SI ("s") [flags 0x22]
<var_decl 0x7f7f85da2120 s>)
(const_int 512 [0x200])))
(nil)))
during RTL pass: vregs
>From gcc-bugs-return-639032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 17:08:28 2019
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Subject: [Bug c++/89889] New: worse code compared to clang with alloca()
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Bug ID: 89889
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Example: https://godbolt.org/z/MLZAA6.
Why is the push/lea/leave necessary? Shouldn't modifying the stack pointer be
enough?
>From gcc-bugs-return-639033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 17:24:25 2019
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Subject: [Bug fortran/89890] New: Memory leak from a function returning a subtype
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I get a memory leak from the code below. The leak does not occur with either
the Intel or PGI Fortran compilers.
The leak goes away if I change the return type of function 'new' to
"CLASS(subtype), ALLOCATABLE".
> gfortran-8 --version
GNU Fortran (SUSE Linux) 8.2.1 20180831 [gcc-8-branch revision 264010]
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> gfortran-8 -g -O0 -std=f2008 code.f90
> valgrind --tool=memcheck --leak-check=yes --show-leak-kinds=definite ./a.out
==25304== Memcheck, a memory error detector
==25304== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==25304== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==25304== Command: ./a.out
==25304==
==25304==
==25304== HEAP SUMMARY:
==25304== in use at exit: 12 bytes in 2 blocks
==25304== total heap usage: 27 allocs, 25 frees, 13,553 bytes allocated
==25304==
==25304== 12 (8 direct, 4 indirect) bytes in 1 blocks are definitely lost in
loss record 2 of 2
==25304== at 0x4C2E01F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==25304== by 0x400CAB: __m_MOD_new (code.f90:14)
==25304== by 0x400DA0: MAIN__ (code.f90:28)
==25304== by 0x400F10: main (code.f90:25)
==25304==
==25304== LEAK SUMMARY:
==25304== definitely lost: 8 bytes in 1 blocks
==25304== indirectly lost: 4 bytes in 1 blocks
==25304== possibly lost: 0 bytes in 0 blocks
==25304== still reachable: 0 bytes in 0 blocks
==25304== suppressed: 0 bytes in 0 blocks
==25304==
==25304== For counts of detected and suppressed errors, rerun with: -v
==25304== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
code.f90:
MODULE m
IMPLICIT NONE
TYPE, ABSTRACT, PUBLIC :: base
END TYPE
TYPE, EXTENDS(base), PUBLIC :: subtype
INTEGER, ALLOCATABLE :: x
CONTAINS
FINAL :: subtype_final
END TYPE
CONTAINS
FUNCTION new(this)
INTEGER :: this
CLASS(base), ALLOCATABLE :: new
ALLOCATE(subtype::new)
SELECT TYPE ( new )
CLASS IS ( subtype )
ALLOCATE(new%x, SOURCE=this)
END SELECT
END
SUBROUTINE subtype_final(this)
TYPE(subtype) :: this
IF ( ALLOCATED(this%x) ) DEALLOCATE(this%x)
END
END
USE m
IMPLICIT NONE
CLASS(base), ALLOCATABLE :: w
ALLOCATE(w, SOURCE=new(0))
DEALLOCATE(w)
END
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89889
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Component|c++ |middle-end
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is because LLVM promotes the alloca to an array that is "statically"
allocated on the stack.
I would say this is a bad micro-benchmark really.
>From gcc-bugs-return-639035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 17:46:19 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 29 Mar 2019 17:46:00 -0000
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--- Comment #31 from Segher Boessenkool <segher at gcc dot gnu.org> ---
If an asm makes a function non-pure, that asm should be volatile in the
first place? Or are there any cases where that is not true?
>From gcc-bugs-return-639036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 17:49:11 2019
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Subject: [Bug c++/89881] Incorrect warning "-Wunneeded-internal-declaration"
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |egallager at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
-Wunneeded-internal-declaration is a clang flag, not a gcc one
>From gcc-bugs-return-639037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 18:05:03 2019
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Subject: [Bug c++/89881] Incorrect warning "-Wunneeded-internal-declaration"
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--- Comment #2 from Lukas Mosimann <lumosimann at gmail dot com> ---
Yes you're right. But also GCC reports a warning, saying that the function is
only declared, but not defined.
This might be exactly what we want, if the function is only used at compile
time, as a kind of type mapping.
So I'm not sure, but in my opinion, if a function is declared, but not defined,
and it is used in a decltype - that is totally ok and no warning should be
omitted at all.
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Subject: [Bug c++/89876] [8/9 Regression] ICE in convert_like_real on decltype expression involving string conversion to char*
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Mar 29 18:40:31 2019
New Revision: 270021
URL: https://gcc.gnu.org/viewcvs?rev=270021&root=gcc&view=rev
Log:
PR c++/89876 - ICE with deprecated conversion.
* call.c (convert_like_real): Only give warnings with tf_warning.
* g++.dg/warn/conv5.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/conv5.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-639039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 18:42:33 2019
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Subject: [Bug c++/89876] [8 Regression] ICE in convert_like_real on decltype expression involving string conversion to char*
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|convert_like_real on |convert_like_real on
|decltype expression |decltype expression
|involving string conversion |involving string conversion
|to char* |to char*
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-639040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 19:32:58 2019
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Subject: [Bug c/89872] [7/8/9 Regression] GCC does not generate read access to volatile compound literal
Date: Fri, 29 Mar 2019 19:32:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 29 19:32:20 2019
New Revision: 270023
URL: https://gcc.gnu.org/viewcvs?rev=270023&root=gcc&view=rev
Log:
PR c/89872
* gimplify.c (gimplify_compound_literal_expr): Don't optimize a
non-addressable complit into its initializer if it is volatile.
* gcc.dg/tree-ssa/pr89872.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr89872.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimplify.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 29 20:10:19 2019
New Revision: 270024
URL: https://gcc.gnu.org/viewcvs?rev=270024&root=gcc&view=rev
Log:
PR sanitizer/89869
* typeck.c: Include gimplify.h.
(cp_build_modify_expr) <case COND_EXPR>: Unshare rhs before using it
for second time. Formatting fixes.
* g++.dg/ubsan/vptr-14.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ubsan/vptr-14.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/89872] [7/8 Regression] GCC does not generate read access to volatile compound literal
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] GCC does |[7/8 Regression] GCC does
|not generate read access to |not generate read access to
|volatile compound literal |volatile compound literal
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug sanitizer/89869] -fsanitize=undefined miscompilation
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Known to fail|9.0 |
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9.1+ so far.
>From gcc-bugs-return-639044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 20:24:50 2019
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Subject: [Bug libstdc++/86164] std::regex crashes when matching long lines
Date: Fri, 29 Mar 2019 20:24:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I started working on a patch to replace the recursion with iteration, but
didn't get it working yet.
>From gcc-bugs-return-639045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 20:51:51 2019
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Fri, 29 Mar 2019 20:51:00 -0000
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 29 20:51:15 2019
New Revision: 270025
URL: https://gcc.gnu.org/viewcvs?rev=270025&root=gcc&view=rev
Log:
PR rtl-optimization/89865
* gcc.target/i386/pr49095.c: Include in scan-assembler-times patterns
the first argument register, so that occassional spills/fills are
ignored.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/pr49095.c
>From gcc-bugs-return-639046-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 21:31:03 2019
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Subject: =?UTF-8?B?W0J1ZyBkcml2ZXIvODk4NjFdIGcrKy04OiBlcnJvcjogdW5yZWNvZ25pemVk?= =?UTF-8?B?IGNvbW1hbmQgbGluZSBvcHRpb24g4oCYLWZzYW5pdGl6ZeKAmQ==?Date: Fri, 29 Mar 2019 21:31:00 -0000
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--- Comment #3 from Jonny Grant <jg at jguk dot org> ---
Excellent, amazing turnaround time Martin!
>From gcc-bugs-return-639047-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 22:34:32 2019
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
Date: Fri, 29 Mar 2019 22:34:00 -0000
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--- Comment #17 from Jürgen Reuter <juergen.reuter at desy dot de> ---
(In reply to Erik Schnetter from comment #16)
> The proper way to fix this via fixinclude is to replace declarations such as
>
> _Atomic u_long
>
> with
>
> _Atomic(u_long)
>
> which is still legal in C. In C++, one can then add
>
> #include <stdatomic>
> #ifndef _Atomic
> #define _Atomic(T) std::atomic< T >
> #endif
>
> to create proper C++ code.
It would be really great if you could provide a proper fix for gcc.
>From gcc-bugs-return-639048-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 23:05:59 2019
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Subject: [Bug fortran/85686] [8/9 Regression] ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array.c:3385
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Jürgen Reuter <juergen.reuter at desy dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |juergen.reuter at desy dot de
--- Comment #4 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Any update on this one, that should possibly be not so hard to fix I'd guess.
>From gcc-bugs-return-639049-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 23:08:18 2019
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Subject: [Bug fortran/87127] External function not recognised from within an associate block
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--- Comment #5 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Paul, would be cool to get back to this one! ;)
>From gcc-bugs-return-639050-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 29 23:41:18 2019
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From: "andrew at fluidgravity dot co.uk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89890] Memory leak from a function returning a subtype
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--- Comment #1 from Andrew Wood <andrew at fluidgravity dot co.uk> ---
If I add the line "INTEGER, ALLOCATABLE :: i(:)" inside the definition of
'base', then valgrind reports the lost memory as having been allocated at the
second ALLOCATE statement in the function 'new' instead of the first.
>From gcc-bugs-return-639051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 02:06:36 2019
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From: "zhongyunde at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
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--- Comment #4 from vfdff <zhongyunde at huawei dot com> ---
I check that base on gcc-431, and find the local array will be placed in read
only section, i.e. gcc-431 can found the array not be touched with the option
-fno-toplevel-reorder. so is it a regression ?
~/GCC/gcc-431/binary/bin/gcc dd.c -O2 -fno-toplevel-reorder -S
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to vfdff from comment #4)
> I check that base on gcc-431, and find the local array will be placed in
> read only section, i.e. gcc-431 can found the array not be touched with the
> option -fno-toplevel-reorder. so is it a regression ?
>
> ~/GCC/gcc-431/binary/bin/gcc dd.c -O2 -fno-toplevel-reorder -S
This is not a regression either. It just happens that way. This not toplevel
reordering either because the static variable is not at the toplevel.
Again you still have not pointed out why you think this is a bug.
aucSubFrmType is never written to or have its address taken, so there for it is
valid to put it in the read only section.
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
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--- Comment #6 from vfdff <zhongyunde at huawei dot com> ---
Yes, I agree with your point, it is not a bug.
I doubt there is something prevent us finding the array not be touched with the
option -fno-toplevel-reorder -O2 (based on gcc 7.3), and we may get better
performance if we known it is ready only data (based on gcc 7.3).
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Subject: [Bug tree-optimization/70392] [openacc] inconsistent line numbers in uninitialised warnings for if clause
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org,
| |dodji at gcc dot gnu.org,
| |manu at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostics maintainers, and Manu since it's an issue with
-Wuninitialized
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Subject: [Bug rtl-optimization/89862] LTO bootstrap fails for ARM
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--- Comment #3 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Sat Mar 30 04:24:22 2019
New Revision: 270030
URL: https://gcc.gnu.org/viewcvs?rev=270030&root=gcc&view=rev
Log:
2019-03-29 Kugan Vivekanandarajah <kuganv@linaro.org>
Eric Botcazou <ebotcazou@adacore.com>
PR rtl-optimization/89862
* rtl.h (word_register_operation_p): Exclude CONST_INT from operations
that operates on the full registers for WORD_REGISTER_OPERATIONS
architectures.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/rtl.h
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Subject: [Bug rtl-optimization/89862] LTO bootstrap fails for ARM
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--- Comment #4 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Sat Mar 30 04:28:51 2019
New Revision: 270031
URL: https://gcc.gnu.org/viewcvs?rev=270031&root=gcc&view=rev
Log:
2019-03-29 Kugan Vivekanandarajah <kuganv@linaro.org>
Backport from mainline
2019-03-29 Kugan Vivekanandarajah <kuganv@linaro.org>
Eric Botcazou <ebotcazou@adacore.com>
PR rtl-optimization/89862
* rtl.h (word_register_operation_p): Exclude CONST_INT from operations
that operates on the full registers for WORD_REGISTER_OPERATIONS
architectures.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/rtl.h
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Subject: [Bug fortran/87127] External function not recognised from within an associate block
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--- Comment #6 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> ---
Hi Juergen,
Noted - as it happens, I have an hour or so right now :-)
Cheers
Paul
On Fri, 29 Mar 2019 at 23:08, juergen.reuter at desy dot de
<gcc-bugzilla@gcc.gnu.org> wrote:
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87127
>
> --- Comment #5 from Jürgen Reuter <juergen.reuter at desy dot de> ---
> Paul, would be cool to get back to this one! ;)
>
> --
> You are receiving this mail because:
> You reported the bug.
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
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--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Created attachment 46060
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46060&action=edit
patch for pr89255
I posted this to gcc-patches in three parts, it would be good if you can test
it on solaris before I commit.
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Subject: [Bug fortran/89890] Memory leak from a function returning a subtype
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This has been fixed by revision r263916 (2018-08-28) and looks like a duplicate
of pr86481.
*** This bug has been marked as a duplicate of bug 86481 ***
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Subject: [Bug fortran/86481] [OOP] Memory leak with sourced allocation
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andrew at fluidgravity dot co.uk
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 89890 has been marked as a duplicate of this bug. ***
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85686] [8/9 Regression] ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array.c:3385
Date: Sat, 30 Mar 2019 11:49:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jürgen Reuter from comment #4)
> Any update on this one, that should possibly be not so hard to fix I'd guess.
A combination of character, associate, and arrays?
How many hoenest's nests do you want to disturb in one go? ;-)
>From gcc-bugs-return-639062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 11:58:19 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89840] [Coarray] CO_BROADCAST: Missing finalization/deallocation of allocatable components
Date: Sat, 30 Mar 2019 11:58:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-03-30
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I do not see any PR opened for co_broadcast not supporting derived-type
arguments.
When and why do you expect the subroutine 'done' to be called in your test?
In its present state I think this PR is INVALID.
>From gcc-bugs-return-639063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 12:26:47 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89866] [8 Regression] [F08] wrong-code problem with POINTER, INTENT(IN) argument
Date: Sat, 30 Mar 2019 12:26:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This has been fixed between revisions r264810 (2018-10-03, wrong code)
and r264951 (2018-10-09, OK) and the fix has not been back ported
to the GCC8 branch).
I did not find any obvious commit in this range.
On the GCC8 branch I see the expected output up to r251946, but a segfault at
runtime for r251980 (2017-09-11), likely r251949. AFAICT the wrong code issue
appeared at revision r257065.
>From gcc-bugs-return-639064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 12:41:17 2019
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Subject: [Bug fortran/89841] improper descriptor information passed to C
Date: Sat, 30 Mar 2019 12:41:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
A patch has been posted at
https://gcc.gnu.org/ml/fortran/2019-03/msg00142.html
and approved at
https://gcc.gnu.org/ml/fortran/2019-03/msg00143.html
>From gcc-bugs-return-639065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 12:43:25 2019
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Subject: [Bug tree-optimization/70392] [openacc] inconsistent line numbers in uninitialised warnings for if clause
Date: Sat, 30 Mar 2019 12:43:00 -0000
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--- Comment #3 from Manuel López-Ibáñez <lopezibanez at gmail dot com> ---
Look at the dumps. Probably the C++ FE or the optimisers do not create an
expression with a valid location for bool. It is not an issue with
Wuninitialized.
On Sat, 30 Mar 2019, 02:50 egallager at gcc dot gnu.org, <
gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70392
>
> Eric Gallager <egallager at gcc dot gnu.org> changed:
>
> What |Removed |Added
>
> ----------------------------------------------------------------------------
> CC| |dmalcolm at gcc dot
> gnu.org,
> | |dodji at gcc dot gnu.org,
> | |manu at gcc dot gnu.org
>
> --- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
> cc-ing diagnostics maintainers, and Manu since it's an issue with
> -Wuninitialized
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
>From gcc-bugs-return-639066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 12:54:45 2019
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Subject: [Bug fortran/89821] Get a SIGFPE on a simple test of a kind=real128 variable with -ffpe-trap=invalid switch
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-30
Ever confirmed|0 |1
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
There are two issues:
(1) The fpe-trap triggered for the reduced test in comment 2 between revisions
r253982 (2017-10-22, no trap) and r254227 (2017-10-30, trap). The change has
not been back ported to the GCC8 branch.
(2) The fpe-trap triggered for the original test after revision r245268, but
not before r245187:
found a nan_real32. Handle it.
found a nan_real64. Handle it.
Floating exception
Now the question is: done want to restore the previous behavior?
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Subject: [Bug fortran/80563] [cleanup] handle allocatable DT intent(out) arguments in init_intent_out_dt instead of gfc_conv_procedure_call
Date: Sat, 30 Mar 2019 13:01:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-03-30
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=78377
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
See pr78377 comment 3.
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Subject: [Bug fortran/78865] [7/8 Regression] ICE in create_tmp_var, at gimple-expr.c:473
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Mar 30 13:23:38 2019
New Revision: 270032
URL: https://gcc.gnu.org/viewcvs?rev=270032&root=gcc&view=rev
Log:
2019-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/78865
Backport from trunk
* interface.c (compare_actual_formal): Change errors about
missing or extra to gfc_error_now to make sure they are issued.
Change "spec" to "specifier" in message.
* resolve.c (resolve_global_procedure): Also check for mismatching
interface with global symbols if the namespace has already been
resolved.
2019-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/78865
Backport from trunk
* gfortran.dg/altreturn_10.f90: New test.
* gfortran.dg/whole_file_3.f90: Change dg-warning to dg-error.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/altreturn_10.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/interface.c
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/whole_file_3.f90
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89841
--- Comment #3 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> ---
It's on its way to being committed this afternoon :-)
Cheers
Paul
On Sat, 30 Mar 2019 at 12:41, dominiq at lps dot ens.fr
<gcc-bugzilla@gcc.gnu.org> wrote:
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89841
>
> --- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> A patch has been posted at
> https://gcc.gnu.org/ml/fortran/2019-03/msg00142.html
> and approved at
> https://gcc.gnu.org/ml/fortran/2019-03/msg00143.html
>
> --
> You are receiving this mail because:
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Subject: [Bug fortran/78865] [7/8 Regression] ICE in create_tmp_var, at gimple-expr.c:473
Date: Sat, 30 Mar 2019 13:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78865
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on gcc-8. Applying the patch to gcc-7 leads to
FAIL: gfortran.dg/allocatable_dummy_1.f90 -O1 (internal compiler error)
and it makes no sense to chase this down.
Closing as fixed.
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Subject: [Bug fortran/89830] intrinsic repeat() is completely broken
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I'm closing the original bug report as invalid.
For the second one... well, you can submit an enhancement
requiest if you want to.
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Subject: [Bug fortran/89866] [8 Regression] [F08] wrong-code problem with POINTER, INTENT(IN) argument
Date: Sat, 30 Mar 2019 13:36:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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CC| |tkoenig at gcc dot gnu.org
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I see correct execution with 8.3.1 20190310, so I assume this has
been fixed in the meantime.
I will commit a test case so this does not regress.
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Mar 30 13:41:10 2019
New Revision: 270034
URL: https://gcc.gnu.org/viewcvs?rev=270034&root=gcc&view=rev
Log:
2019-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89866
* gfortran.dg/pointer_intent_8.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pointer_intent_8.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89866] [8 Regression] [F08] wrong-code problem with POINTER, INTENT(IN) argument
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Mar 30 13:45:47 2019
New Revision: 270035
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2019-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89866
* gfortran.dg/pointer_intent_8.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_intent_8.f90
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/39627] [meta-bug] Fortran 2008 support
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39627
Bug 39627 depends on bug 89866, which changed state.
Bug 89866 Summary: [8 Regression] [F08] wrong-code problem with POINTER, INTENT(IN) argument
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89866
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug c++/88242] static_assertion only fires when class is templated
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--- Comment #1 from fiesh at zefix dot tv ---
Ran through creduce:
template <int a> struct b { static constexpr int c = a; };
template <typename, unsigned long> struct d {};
template <typename> struct j;
template <typename e, unsigned long g> struct j<d<e, g>> : b<g> {};
template <typename e> constexpr long h = j<e>::c;
template <int i> struct n : n<i - 1> { static constexpr int c = i; };
template <> struct n<0> {};
using k = n<6>;
#ifndef FIX
template <typename = void>
#endif
struct l {
d<int, 0> m;
static auto f(n<h<decltype(m)>>) -> d<int, 1>;
static auto f(n<h<decltype(f(k{}))> + 1> q) -> d<int, decltype(q)::c> {
static_assert(q.c == 2, "BUG88242_1");
}
static auto o() { f(k{}); }
};
#ifndef FIX
using p = l<>;
#else
using p = l;
#endif
static_assert(p::o);
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Subject: [Bug fortran/89866] [8 Regression] [F08] wrong-code problem with POINTER, INTENT(IN) argument
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
So, fixed.
Thanks for the bug report!
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Subject: [Bug fortran/89646] [7/8/9 Regression] Spurious actual argument might interfere warning
Date: Sat, 30 Mar 2019 13:52:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|Spurious actual argument |[7/8/9 Regression] Spurious
|might interfere warning |actual argument might
| |interfere warning
>From gcc-bugs-return-639079-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 14:03:08 2019
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Subject: [Bug fortran/68815] Error/warning diagnostic: '%s' should be converted to %qs-like or %<%s%>-like string strings
Date: Sat, 30 Mar 2019 14:03:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Tobias: Can the bug be marked as resolved?
No feedback, closing. Please open a new PR for remaining issue(s).
>From gcc-bugs-return-639080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 14:18:10 2019
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Subject: [Bug fortran/59344] warning for needless pointer attribute
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Please provide the man power otherwise you'll never get it.
No manpower provided, closing as WONTFIX.
>From gcc-bugs-return-639081-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 14:21:17 2019
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Subject: [Bug fortran/89891] New: [meta-bug] Accessing memory in rejected statements or expressions
Date: Sat, 30 Mar 2019 14:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89891
Bug ID: 89891
Summary: [meta-bug] Accessing memory in rejected statements or
expressions
Product: gcc
Version: 9.0
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There are quite a few places where we access memory in rejected
statements. This should be a place to gather them.
>From gcc-bugs-return-639082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 14:28:51 2019
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Subject: [Bug fortran/64118] Strange warning about unused function/subroutine
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This PR has been fixed since GCC6, closing.
>From gcc-bugs-return-639083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 14:45:41 2019
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Subject: [Bug fortran/87946] [7/8/9 Regression] ICE in gfc_walk_array_ref, at fortran/trans-array.c:10506
Date: Sat, 30 Mar 2019 14:45:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
In gfc_walk_array_ref, ar->as is zero when looking at the size of
z in the function g.
>From gcc-bugs-return-639085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 15:25:18 2019
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Subject: [Bug c++/89744] [8 Regression] ICE with specialization of nested template class
Date: Sat, 30 Mar 2019 15:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89744
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sat Mar 30 15:23:37 2019
New Revision: 270036
URL: https://gcc.gnu.org/viewcvs?rev=270036&root=gcc&view=rev
Log:
PR c++/89744 - ICE with specialization of member class template.
My fix five years ago for PR 60241 was incomplete: when we reassign implicit
instances of a partial instantiation of a member template to the explicit
specialization of that partial instantiation, we also need to adjust the
CLASSTYPE_TI_ARGS to match what we'd get when looking up that instance after
the explicit specialization. We also need to do this when we later look up
the instance in a way that only finds the explicit specialization halfway
through lookup_template_class_1.
* pt.c (lookup_template_class_1): If the partial instantiation is
explicitly specialized, adjust.
(maybe_process_partial_specialization): Also adjust
CLASSTYPE_TI_ARGS.
Added:
trunk/gcc/testsuite/g++.dg/template/mem-spec1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/pt.c
>From gcc-bugs-return-639084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 15:25:18 2019
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Subject: [Bug c++/60241] [4.8 Regression] internal compiler error: in finish_member_declaration, at cp/semantics.c:2617
Date: Sat, 30 Mar 2019 15:25:00 -0000
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--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sat Mar 30 15:23:37 2019
New Revision: 270036
URL: https://gcc.gnu.org/viewcvs?rev=270036&root=gcc&view=rev
Log:
PR c++/89744 - ICE with specialization of member class template.
My fix five years ago for PR 60241 was incomplete: when we reassign implicit
instances of a partial instantiation of a member template to the explicit
specialization of that partial instantiation, we also need to adjust the
CLASSTYPE_TI_ARGS to match what we'd get when looking up that instance after
the explicit specialization. We also need to do this when we later look up
the instance in a way that only finds the explicit specialization halfway
through lookup_template_class_1.
* pt.c (lookup_template_class_1): If the partial instantiation is
explicitly specialized, adjust.
(maybe_process_partial_specialization): Also adjust
CLASSTYPE_TI_ARGS.
Added:
trunk/gcc/testsuite/g++.dg/template/mem-spec1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/pt.c
>From gcc-bugs-return-639087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 15:39:39 2019
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89842] CFI_allocate fails to allocate object
Date: Sat, 30 Mar 2019 15:39:00 -0000
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--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Mar 30 15:39:00 2019
New Revision: 270037
URL: https://gcc.gnu.org/viewcvs?rev=270037&root=gcc&view=rev
Log:
2019-03-30 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89841
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Use the formal
argument attributes rather than those of the actual argument.
PR fortran/89842
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Call
'set_dtype_for_unallocated' for any type of arrayspec.
2019-03-30 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89841
* gfortran.dg/ISO_Fortran_binding_1.f90: Change the interfaces
for c_deallocate, c_allocate and c_assumed_size so that the
attributes of the array arguments are correct and are typed.
* gfortran.dg/ISO_Fortran_binding_7.f90: New test.
* gfortran.dg/ISO_Fortran_binding_7.c: Additional source.
PR fortran/89842
* gfortran.dg/ISO_Fortran_binding_8.f90: New test.
* gfortran.dg/ISO_Fortran_binding_8.c: Additional source.
Added:
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.f90
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.f90
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Subject: [Bug fortran/89841] improper descriptor information passed to C
Date: Sat, 30 Mar 2019 15:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89841
--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Mar 30 15:39:00 2019
New Revision: 270037
URL: https://gcc.gnu.org/viewcvs?rev=270037&root=gcc&view=rev
Log:
2019-03-30 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89841
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Use the formal
argument attributes rather than those of the actual argument.
PR fortran/89842
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Call
'set_dtype_for_unallocated' for any type of arrayspec.
2019-03-30 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89841
* gfortran.dg/ISO_Fortran_binding_1.f90: Change the interfaces
for c_deallocate, c_allocate and c_assumed_size so that the
attributes of the array arguments are correct and are typed.
* gfortran.dg/ISO_Fortran_binding_7.f90: New test.
* gfortran.dg/ISO_Fortran_binding_7.c: Additional source.
PR fortran/89842
* gfortran.dg/ISO_Fortran_binding_8.f90: New test.
* gfortran.dg/ISO_Fortran_binding_8.c: Additional source.
Added:
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.f90
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.f90
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Subject: [Bug fortran/89842] CFI_allocate fails to allocate object
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |pault at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk.
Thanks for the report.
Paul
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Subject: [Bug fortran/89841] improper descriptor information passed to C
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk.
Thanks for the report.
Paul
>From gcc-bugs-return-639090-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 18:10:04 2019
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Subject: [Bug fortran/54852] Bogus(?) warnings when compiling gfortran.dg/bind_c_vars.f90 gfortran.dg/bind_c_vars_driver.c with -flto
Date: Sat, 30 Mar 2019 18:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54852
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The warnings are gone since GCC6, closing.
>From gcc-bugs-return-639091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 18:10:05 2019
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Subject: [Bug fortran/80174] [meta-bug] Fortran lto issues
Date: Sat, 30 Mar 2019 18:10:00 -0000
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Bug 80174 depends on bug 54852, which changed state.
Bug 54852 Summary: Bogus(?) warnings when compiling gfortran.dg/bind_c_vars.f90 gfortran.dg/bind_c_vars_driver.c with -flto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54852
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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Subject: [Bug libfortran/79540] [7/8 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
Date: Sat, 30 Mar 2019 18:29:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] FAIL: |[7/8 Regression] FAIL:
|gfortran.dg/fmt_fw_d.f90 |gfortran.dg/fmt_fw_d.f90
|-O0 execution test |-O0 execution test
--- Comment #25 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Fixed on trunk so far.
>From gcc-bugs-return-639093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 18:31:03 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89894] New: poor error message when redefining a function overloaded on a non-type specialization
Date: Sat, 30 Mar 2019 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89894
Bug ID: 89894
Summary: poor error message when redefining a function
overloaded on a non-type specialization
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
The error message below make it difficult to understand what exactly the root
cause problem is: the names of the types of the arguments are different and no
other detail is provided. If the definitions of T and U and far apart (e.g.,
in different headers perhaps even supplied by different libraries) and
complicated (e.g., the result of some non-trivial algorithm) determining what
makes the types the same could be a non-trivial exercise.
Including a note in the error message pointing to the types underlying the
aliases would help.
Providing more detail about the underlying types, such as the values of the
constants the underlying templates are instantiated on analogously to what's
done for ordinary templates, would help even more.
$ cat z.C && gcc -c -Wall -std=c++2a z.C
struct A { int i; };
template <A> struct B { };
constexpr A f () { return A{1<<27}; }
constexpr A g () { return A{134217728}; }
typedef B<f ()> T;
typedef B<g ()> U;
void h (T) { }
void h (U) { }
z.C:10:6: error: redefinition of ‘void h(U)’
10 | void h (U) { }
| ^
z.C:9:6: note: ‘void h(T)’ previously defined here
9 | void h (T) { }
| ^
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Subject: [Bug c++/89894] poor error message when redefining a function overloaded on a non-type specialization
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |dmalcolm at gcc dot gnu.org
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
David, you might be interested in this.
>From gcc-bugs-return-639095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 18:40:52 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89894] poor error message when redefining a function overloaded on a non-type specialization
Date: Sat, 30 Mar 2019 18:40:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Actually, it's not specific to non-type specializations or even templates. The
same problem happens with ordinary types. Non-type template specializations
just exacerbate it.
$ cat z.C && gcc -c -Wall z.C
struct A { };
typedef A B;
typedef A T;
typedef B U;
void h (T) { }
void h (U) { }
z.C:8:6: error: redefinition of ‘void h(U)’
8 | void h (U) { }
| ^
z.C:7:6: note: ‘void h(T)’ previously defined here
7 | void h (T) { }
| ^
>From gcc-bugs-return-639096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 19:21:35 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Sat, 30 Mar 2019 19:21:00 -0000
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--- Comment #32 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Historically, a local register asm variable *does* live in that variable
for its entire scope. This stopped working correctly, even with the many
caveats there were for it, and many years ago the manual added language
saying that only using such a var in an extended asm in or out is supported,
and there was language warning you to keep the life time short, etc.
This did *not* change the implementation. Any other use still is explicitly
unsupported, and all such testcases are invalid code.
It would be nice if GCC was changed such that such vars were expanded to a
pseudo like any other var, and copies to/from a hard reg just around the asm.
Gimple doesn't need to do *anything* for that, just keep track that the var
is declared as local register var, and the gimple it had now at expand is
just fine:
===
f ()
{
register int a __asm__ (*eax);
int o;
;; basic block 2, loop depth 0
;; pred: ENTRY
a = 1;
__asm__("add %1, %0" : "=g" o_14 : "r" a, "0" 0);
clear_eax ();
__asm__("add %1, %0" : "=g" o_21 : "r" a, "0" o_14);
clear_eax ();
__asm__("add %1, %0" : "=g" o_28 : "r" a, "0" o_21);
clear_eax ();
return o_28;
;; succ: EXIT
}
===
But currently "a" is expanded as a hard reg, not a pseudo, and the code does
not
do what you want at all. As the manual tells you.
===
;; Generating RTL for gimple basic block 2
;; a = 1;
(insn 5 4 0 (set (reg/v:SI 0 ax [ a ])
(const_int 1 [0x1])) "cax.c":6:18 -1
(nil))
===
(and it gets worse after that).
>From gcc-bugs-return-639097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 30 22:42:38 2019
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Subject: [Bug tree-optimization/70392] [openacc] inconsistent line numbers in uninitialised warnings for if clause
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|manu at gcc dot gnu.org |jason at gcc dot gnu.org,
| |nathan at acm dot org
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #3)
> Look at the dumps. Probably the C++ FE or the optimisers do not create an
> expression with a valid location for bool. It is not an issue with
> Wuninitialized.
>
ok, never mind; removing you and replacing you with the C++ FE maintainers
instead, then...
>From gcc-bugs-return-639098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 00:07:03 2019
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Subject: [Bug libfortran/79540] [7/8 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
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--- Comment #26 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #25)
> Fixed on trunk so far.
Yes, OK to backport.
>From gcc-bugs-return-639099-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 02:37:50 2019
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Created attachment 46061
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octane benchmark part1
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octane benchmark part2
>From gcc-bugs-return-639101-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 07:54:10 2019
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Subject: [Bug rtl-optimization/89895] New: Unable to sink high half of widening multiply out of loop
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Bug ID: 89895
Summary: Unable to sink high half of widening multiply out of
loop
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This is part of gcc's general problem with double-word values, but
I was encouraged to submit a PR, since it's a particularly simple but
real-world-applicable test case.
Lemire's algorithm for uniform random number generation in a range
(https://arxiv.org/abs/1805.10941) has the following core:
static uint64_t __attribute__((noinline)) get_random_u64(void);
u64 get_random_range(uint64_t range, uint64_t lim)
{
unsigned __int128 prod;
do {
prod = (unsigned __int128)range * get_random_u64();
} while ((uint64_t)prod < lim);
return prod >> 64;
}
(In practice, get_random_u64() would be inlined, but I've left it
out of line for exposition.)
GCC's isn't sinking generation of the high half of the product out
of the loop. This particularly applies on platforms with a separate
multiply-high instruction like alpha:
$L9:
bsr $26,get_random_u64 !samegp
mulq $0,$9,$1
umulh $0,$9,$0
cmpule $10,$1,$1
beq $1,$L9
and PowerPC:
.L12:
bl get_random_u64
mulld 9,3,31
mulhdu 3,3,31
cmpld 7,30,9
bgt+ 7,.L12
But is also applies to MIPS, where the mfhi could be sunk out of the
loop:
.L10:
jal get_random_u64
nop
dmultu $2,$17
mflo $2
sltu $6,$2,$16
bne $6,$0,.L10
mfhi $3
In this case, there's nothing *better* to do in the delay slot than mfhi,
but that's kind of an accident.
The code I'd hope to see is
Alpha:
$L9:
bsr $26,get_random_u64
mulq $0,$9,$1
cmpule $10,$1,$1
beq $1,$L9
umulh $0,$9,$0
PowerPC:
.L12:
bl get_random_u64
mulld 9,3,31
cmpld 7,30,9
bgt+ 7,.L12
mulhdu 3,3,31
and (when the mulditi3 expander is added) MIPS r6:
.L10:
balc get_random_u64
dmulu $3, $2, $17
sltu $3, $3, $16
bnezc $3, .L10
dmuhu $2, $2, $17
In these cases, since the low-half multiply is the last multiply in
the loop, the high half will still catch the hardware-optimized case
for both halves of a multiply.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89896
Bug ID: 89896
Summary: -flto=4 is confused by presence of all.o in a local
directory. -flto=1 is not.
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at inbox dot ru
CC: marxin at gcc dot gnu.org
Target Milestone: ---
The bug is originally discovered by Fabio Coatti in
https://bugs.gentoo.org/682018.
There isl-0.21 fails to link when built with CFLAGS="-O2 -flto=4 -pipe"
LDFLAGS="${CFLAGS}". The trigger is all.c file name in isl source three. It
gets translated to all.o.
Here is the minimal reproducer:
$ cat foo.bash
#!/bin/bash
export LANG=C
cc=gcc
mk() {
local flag=$1
rm -rf -- *.o *.so*
${cc} ${flag} -fPIC -c all.c -o all.o
${cc} ${flag} -fPIC -c isl.c -o isl.o
# Note: all.o is not used here and yet in interferes with -flto=4
${cc} ${flag} -fPIC -shared isl.o -o libisl.so
}
# empty files are enough to trigger a bug
touch all.c isl.c
echo "=== -flto=1 (works) ==="
mk "-flto=1"
echo "=== -flto=4 (fails) ==="
mk "-flto=4"
Running:
$ ./foo.bash
=== -flto=1 (works) ===
=== -flto=4 (fails) ===
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld:
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../lib64/../lib64/Scrt1.o: in
function `_start':
/usr/src/debug/sys-libs/glibc-2.29-r1/glibc-2.29/csu/../sysdeps/x86_64/start.S:104:
undefined reference to `main'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: all] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
Note: all.o is never passed to gcc as an input. And yet it's presence
interferes with the driver.
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Subject: [Bug fortran/78674] [cleanup] merge gfc_convert_type_warn and gfc_convert_chartype
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Patch at https://gcc.gnu.org/ml/fortran/2016-12/msg00045.html
Any reason why this patch has never been pinged?
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Subject: [Bug lto/89896] -flto=4 is confused by presence of 'all.c' in a local directory. -flto=1 is not.
Date: Sun, 31 Mar 2019 10:36:00 -0000
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Sergei Trofimovich <slyfox at inbox dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|-flto=4 is confused by |-flto=4 is confused by
|presence of all.o in a |presence of 'all.c' in a
|local directory. -flto=1 is |local directory. -flto=1 is
|not. |not.
--- Comment #1 from Sergei Trofimovich <slyfox at inbox dot ru> ---
It seems that 'all.c' is actual trigger, not 'all.o'.
>From gcc-bugs-return-639105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 13:38:56 2019
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
Date: Sun, 31 Mar 2019 13:38:00 -0000
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--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I think this is a high-priority bug that we should try to fix
before the GCC 9 release.
Some discussion here:
https://gcc.gnu.org/ml/fortran/2019-03/msg00124.html
Jeremy, you mentioned that you commented out a loop in finalize_component.
Could you put a patch here to see exactly what you did?
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Subject: [Bug d/88462] All D execution tests FAIL on Solaris/SPARC
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--- Comment #13 from ibuclaw at gcc dot gnu.org ---
Author: ibuclaw
Date: Sun Mar 31 14:34:41 2019
New Revision: 270043
URL: https://gcc.gnu.org/viewcvs?rev=270043&root=gcc&view=rev
Log:
d: Fix run-time SIGSEGV reading ModuleInfo.flags()
The current forced alignment is not necessary, and is problematic on
targets that have strict alignment rules.
gcc/d/ChangeLog:
2019-03-31 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/88462
* modules.cc (layout_moduleinfo_fields): Properly align ModuleInfo,
instead of forcing alignment to be 1.
Modified:
trunk/gcc/d/ChangeLog
trunk/gcc/d/modules.cc
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This patch
Index: class.c
===================================================================
--- class.c (Revision 269895)
+++ class.c (Arbeitskopie)
@@ -1031,11 +1031,13 @@ finalize_component (gfc_expr *expr, gfc_symbol *de
}
else
{
+#if 0
gfc_component *c;
for (c = comp->ts.u.derived->components; c; c = c->next)
finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray, code,
sub_ns);
+#endif
gfc_free_expr (e);
}
}
leads to a reduction in the compile time, but a segfault in the
test case.
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
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--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #10)
> This patch
>
> Index: class.c
> ===================================================================
> --- class.c (Revision 269895)
> +++ class.c (Arbeitskopie)
> @@ -1031,11 +1031,13 @@ finalize_component (gfc_expr *expr, gfc_symbol *de
> }
> else
> {
> +#if 0
> gfc_component *c;
>
> for (c = comp->ts.u.derived->components; c; c = c->next)
> finalize_component (e, comp->ts.u.derived, c, stat, fini_coarray,
> code,
> sub_ns);
> +#endif
> gfc_free_expr (e);
> }
> }
>
> leads to a reduction in the compile time, but a segfault in the
> test case.
... but then the test case lacks a few ALLOCATE statements to be valid :-)
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
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--- Comment #12 from Jeremy Sanders <jeremy at jeremysanders dot net> ---
Thomas - unfortunately I don't have a copy of what I did. I think reverting
this patch fixes the problem though:
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/fortran/resolve.c?r1=254427&r2=254426&pathrev=254427
Sorry - I left out the allocate statements in the test case. Do you want me to
fix the test case?
I've not fixed the problem, but I've been putting debugging statements into the
code to try to understand what is going on. Please see the attached log file
and print patch.
What appears to happen is that generate_finalization_wrapper for
testmodule_Evtlistlist_type calls finalize_component for evtlistlist_type. This
in turn calls finalize_component for each member of evtlist_type. For N
members, N gfc_code objects are created (See the code pointers in the log).
Here my program has members p00, p01, p02 and p03.
When these code objects are then interpreted in gfc_trans_deallocate
structure_alloc_comps does a deallocation for each of the members. This leads
to the N^2 behaviour as the is a gfc_code object made for each member, and each
of these code objects does a deallocation of all members.
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
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--- Comment #13 from Jeremy Sanders <jeremy at jeremysanders dot net> ---
Created attachment 46063
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46063&action=edit
log (minor edits) from instrumentation patch
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
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--- Comment #14 from Jeremy Sanders <jeremy at jeremysanders dot net> ---
Created attachment 46064
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46064&action=edit
Patch to instrument gfortran for test case
>From gcc-bugs-return-639113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 16:11:05 2019
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=87352
--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01478.html
might also cure this one, without source I cannot tell.
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Subject: [Bug fortran/42958] Weird temporary array allocation
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--- Comment #26 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #25)
> > If you find anything still missing in the library, please let me know.
> > I thought I had converted everything to the macros, which are fairly
> > easy to change, but I may be mistaken.
>
> Is there anything left? or could this PR be closed as FIXED?
We still do
{
if ((real(kind=4)[0:] * restrict) a.data != 0B)
{
__builtin_free ((void *) a.data);
(real(kind=4)[0:] * restrict) a.data = 0B;
}
}
Also, we have space array descriptor fields now, so for GCC 10, we
can finally implement the "allocated" flag.
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Subject: [Bug debug/89529] Wrong debug info generated at -Og [gcc-trunk]
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Qirun Zhang <qrzhang at gatech dot edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |qrzhang at gatech dot edu
--- Comment #3 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisection points to r235905
>From gcc-bugs-return-639116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 18:06:59 2019
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Subject: [Bug rtl-optimization/80960] [7/8/9 Regression] Huge memory use when compiling a very large test case
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
With -O2, the combiner takes up quite a lot of time:
$ time gfortran -ftime-report -g0 -O2 -fdefault-integer-8 -c fe_objective.f90
alias stmt walking : 15.75 ( 4%) 0.11 ( 5%) 15.89 ( 4%)
2 kB ( 0%)
dead store elim2 : 10.49 ( 2%) 0.33 ( 16%) 10.82 ( 3%)
1578727 kB ( 35%)
combiner : 346.20 ( 81%) 0.89 ( 44%) 347.17 ( 81%)
2701135 kB ( 60%)
TOTAL : 428.68 2.01 430.83
4504484 kB
With -O1, this now has as biggest consumers of cycles
alias stmt walking : 11.80 ( 31%) 0.04 ( 13%) 11.78 ( 31%)
2 kB ( 0%)
integrated RA : 5.61 ( 15%) 0.06 ( 20%) 5.67 ( 15%)
34896 kB ( 10%)
LRA hard reg assignment : 4.69 ( 12%) 0.00 ( 0%) 4.69 ( 12%)
0 kB ( 0%)
TOTAL : 37.68 0.30 38.00
364905 kB
which does not look too bad (and memory consumption has remained constant).
Note that this is with checking enabled.
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Subject: [Bug c/78736] enum warnings in GCC (request for -Wenum-conversion to be added)
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |87403
Summary|enum warnings in GCC |enum warnings in GCC
| |(request for
| |-Wenum-conversion to be
| |added)
--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #7)
> Prathamesh has submitted a patch to the gcc-patches mailing list that still
> needs to be reviewed for this bug:
> https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00514.html
Retitling to clarify which enum warning in particular this bug is about adding
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403
[Bug 87403] [Meta-bug] Issues that suggest a new warning
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Subject: [Bug fortran/85797] ICE in gfc_element_size, at fortran/target-memory.c:126
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--- Comment #6 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 31 18:33:51 2019
New Revision: 270045
URL: https://gcc.gnu.org/viewcvs?rev=270045&root=gcc&view=rev
Log:
2019-03-31 Harald Anlauf <anlauf@gmx.de>
PR fortran/83515
PR fortran/85797
* trans-types.c (gfc_typenode_for_spec): Handle conversion for
procedure pointers.
* target-memory.c (gfc_element_size): Handle size determination
for procedure pointers.
PR fortran/83515
PR fortran/85797
* gfortran.dg/pr85797.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr85797.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/target-memory.c
trunk/gcc/fortran/trans-types.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Sun, 31 Mar 2019 18:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83515
--- Comment #16 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 31 18:33:51 2019
New Revision: 270045
URL: https://gcc.gnu.org/viewcvs?rev=270045&root=gcc&view=rev
Log:
2019-03-31 Harald Anlauf <anlauf@gmx.de>
PR fortran/83515
PR fortran/85797
* trans-types.c (gfc_typenode_for_spec): Handle conversion for
procedure pointers.
* target-memory.c (gfc_element_size): Handle size determination
for procedure pointers.
PR fortran/83515
PR fortran/85797
* gfortran.dg/pr85797.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr85797.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/target-memory.c
trunk/gcc/fortran/trans-types.c
trunk/gcc/testsuite/ChangeLog
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/52763] Warning if compare between enum and non-enum type
Date: Sun, 31 Mar 2019 18:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52763
--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #8)
> Clang warns when an enum object is compared to a constant that's out of the
> most restricted range of the enum's type. The warning is in -Wall. It
> doesn't warn when the object is compared to a constant that doesn't
> correspond to any of the type's enumerators. I can see that being useful to
> some (carefully written) projects but suspect it could be quite noisy for
> many others.
>
> $ cat t.C && clang++ -S -Wall -Wextra t.C
> enum E { NONE = 0, ONE = 1, TWO = 2 };
>
> bool f (E e)
> {
> return e == 3; // no warning here
> }
>
> bool g (E e)
> {
> return e == 4;
> }
>
>
> t.C:10:12: warning: comparison of constant 4 with expression of type 'E' is
> always false [-Wtautological-constant-out-of-range-compare]
> return e == 4;
> ~ ^ ~
> 1 warning generated.
Would it make sense for GCC to just reuse -Wenum-compare for this case instead
of adding a new -Wtautological-constant-out-of-range-compare flag?
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89897] New: suggest header for SIGABRT
Date: Sun, 31 Mar 2019 18:37:00 -0000
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Bug ID: 89897
Summary: suggest header for SIGABRT
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Could g++ suggest header for SIGABRT?
<csignal> just includes <signal.h> I saw in the file. But anyway, I was
compiling as
#1 with x86-64 gcc (trunk)
<source>: In function 'int main()':
<source>:6:18: error: 'SIGABRT' was not declared in this scope
6 | std::cout << SIGABRT;
| ^~~~~~~
Compiler returned: 1
//#include <csignal>
#include <iostream>
int main()
{
std::cout << SIGABRT;
}
and C version
//#include <signal.h>
int main()
{
return SIGABRT;
}
#1 with x86-64 gcc 8.3
<source>: In function 'main':
<source>:5:12: error: 'SIGABRT' undeclared (first use in this function)
return SIGABRT;
^~~~~~~
<source>:5:12: note: each undeclared identifier is reported only once for each
function it appears in
Compiler returned: 1
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Subject: [Bug fortran/85797] ICE in gfc_element_size, at fortran/target-memory.c:126
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85797
--- Comment #7 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 31 19:08:23 2019
New Revision: 270046
URL: https://gcc.gnu.org/viewcvs?rev=270046&root=gcc&view=rev
Log:
2019-03-31 Harald Anlauf <anlauf@gmx.de>
PR fortran/83515
PR fortran/85797
* trans-types.c (gfc_typenode_for_spec): Handle conversion for
procedure pointers.
* target-memory.c (gfc_element_size): Handle size determination
for procedure pointers.
PR fortran/83515
PR fortran/85797
* gfortran.dg/pr85797.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr85797.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/target-memory.c
branches/gcc-8-branch/gcc/fortran/trans-types.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83515
--- Comment #17 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 31 19:08:23 2019
New Revision: 270046
URL: https://gcc.gnu.org/viewcvs?rev=270046&root=gcc&view=rev
Log:
2019-03-31 Harald Anlauf <anlauf@gmx.de>
PR fortran/83515
PR fortran/85797
* trans-types.c (gfc_typenode_for_spec): Handle conversion for
procedure pointers.
* target-memory.c (gfc_element_size): Handle size determination
for procedure pointers.
PR fortran/83515
PR fortran/85797
* gfortran.dg/pr85797.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr85797.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/target-memory.c
branches/gcc-8-branch/gcc/fortran/trans-types.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83515
--- Comment #18 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 31 19:21:37 2019
New Revision: 270047
URL: https://gcc.gnu.org/viewcvs?rev=270047&root=gcc&view=rev
Log:
2019-03-31 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/83515
PR fortran/85797
* trans-types.c (gfc_typenode_for_spec): Handle conversion for
procedure pointers.
* target-memory.c (gfc_element_size): Handle size determination
for procedure pointers.
PR fortran/83515
PR fortran/85797
* gfortran.dg/pr85797.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr85797.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/target-memory.c
branches/gcc-7-branch/gcc/fortran/trans-types.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/85797] ICE in gfc_element_size, at fortran/target-memory.c:126
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--- Comment #8 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 31 19:21:37 2019
New Revision: 270047
URL: https://gcc.gnu.org/viewcvs?rev=270047&root=gcc&view=rev
Log:
2019-03-31 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/83515
PR fortran/85797
* trans-types.c (gfc_typenode_for_spec): Handle conversion for
procedure pointers.
* target-memory.c (gfc_element_size): Handle size determination
for procedure pointers.
PR fortran/83515
PR fortran/85797
* gfortran.dg/pr85797.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr85797.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/target-memory.c
branches/gcc-7-branch/gcc/fortran/trans-types.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/85797] ICE in gfc_element_size, at fortran/target-memory.c:126
Date: Sun, 31 Mar 2019 19:25:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from anlauf at gcc dot gnu.org ---
Fixed on trunk and open branches (7/8).
Thanks for the report!
>From gcc-bugs-return-639127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 19:26:56 2019
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89528] Wrong debug info generated at -Og [gcc-trunk]
Date: Sun, 31 Mar 2019 19:26:00 -0000
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Qirun Zhang <qrzhang at gatech dot edu> changed:
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----------------------------------------------------------------------------
CC| |qrzhang at gatech dot edu
--- Comment #2 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisection points to r217125.
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Sun, 31 Mar 2019 19:27:00 -0000
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anlauf at gcc dot gnu.org changed:
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--- Comment #19 from anlauf at gcc dot gnu.org ---
Fixed on trunk and all open branches (7/8).
Closing, as no reduced run-time testcase was provided.
Please reopen or create a new PR if an issue is found.
Thanks for the report!
>From gcc-bugs-return-639129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 19:47:21 2019
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Subject: [Bug tree-optimization/46590] long compile time with -O2 and many loops
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--- Comment #48 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The test case from comment#5 and comment#6 has regressed for M7/8/9:
$ time gfortran-4.8 -O1 gener-4.f90
real 0m11.509s
user 0m11.356s
sys 0m0.148s
$ time gfortran-7 -O1 gener-4.f90
real 0m23.630s
user 0m23.475s
sys 0m0.142s
$ time gfortran-8 -O1 gener-4.f90
real 0m23.702s
user 0m23.356s
sys 0m0.335s
$ time gfortran -O1 gener-4.f90
real 0m24.708s
user 0m24.577s
sys 0m0.107s
(where gfortran is a recent trunk, without checking).
About half the time is spent in df live&initialized regs, with another
big chunk in tree copy headers:
$ gfortran -O1 -ftime-report gener-4.f90
Time variable usr sys wall
GGC
phase setup : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
182 kB ( 0%)
phase parsing : 0.30 ( 1%) 0.02 ( 8%) 0.32 ( 1%)
18037 kB ( 11%)
phase opt and generate : 23.81 ( 99%) 0.24 ( 92%) 24.06 ( 99%)
143289 kB ( 89%)
callgraph construction : 0.04 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
4980 kB ( 3%)
ipa function summary : 0.05 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
1414 kB ( 1%)
ipa inlining heuristics : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
ipa pure const : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
cfg construction : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
890 kB ( 1%)
cfg cleanup : 0.05 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
0 kB ( 0%)
trivially dead code : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
df scan insns : 0.07 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
0 kB ( 0%)
df multiple defs : 0.04 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
df reaching defs : 0.97 ( 4%) 0.01 ( 4%) 0.99 ( 4%)
0 kB ( 0%)
df live regs : 0.24 ( 1%) 0.00 ( 0%) 0.21 ( 1%)
0 kB ( 0%)
df live&initialized regs : 12.11 ( 50%) 0.01 ( 4%) 12.03 ( 49%)
0 kB ( 0%)
df use-def / def-use chains : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
df reg dead/unused notes : 0.24 ( 1%) 0.00 ( 0%) 0.24 ( 1%)
2811 kB ( 2%)
register information : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
alias analysis : 0.06 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
2048 kB ( 1%)
alias stmt walking : 1.55 ( 6%) 0.06 ( 23%) 1.65 ( 7%)
92 kB ( 0%)
register scan : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
189 kB ( 0%)
rebuild jump labels : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
parser (global) : 0.30 ( 1%) 0.02 ( 8%) 0.32 ( 1%)
18037 kB ( 11%)
inline parameters : 0.04 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
513 kB ( 0%)
tree gimplify : 0.07 ( 0%) 0.01 ( 4%) 0.08 ( 0%)
13934 kB ( 9%)
tree eh : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
tree CFG construction : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
5209 kB ( 3%)
tree CFG cleanup : 0.34 ( 1%) 0.01 ( 4%) 0.37 ( 2%)
1697 kB ( 1%)
tree copy propagation : 0.03 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
tree PTA : 0.21 ( 1%) 0.00 ( 0%) 0.22 ( 1%)
1269 kB ( 1%)
tree PHI insertion : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2644 kB ( 2%)
tree SSA rewrite : 0.05 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
3119 kB ( 2%)
tree SSA other : 0.01 ( 0%) 0.02 ( 8%) 0.03 ( 0%)
0 kB ( 0%)
tree SSA incremental : 0.08 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
4729 kB ( 3%)
tree operand scan : 0.04 ( 0%) 0.01 ( 4%) 0.06 ( 0%)
3526 kB ( 2%)
dominator optimization : 0.27 ( 1%) 0.01 ( 4%) 0.23 ( 1%)
5850 kB ( 4%)
tree SRA : 0.13 ( 1%) 0.00 ( 0%) 0.14 ( 1%)
562 kB ( 0%)
tree CCP : 0.32 ( 1%) 0.01 ( 4%) 0.30 ( 1%)
1226 kB ( 1%)
tree reassociation : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
tree FRE : 0.60 ( 2%) 0.02 ( 8%) 0.59 ( 2%)
2505 kB ( 2%)
tree code sinking : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
60 kB ( 0%)
tree linearize phis : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2 kB ( 0%)
tree backward propagate : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
tree forward propagate : 0.05 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
816 kB ( 1%)
tree phiprop : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
tree conservative DCE : 0.02 ( 0%) 0.02 ( 8%) 0.07 ( 0%)
0 kB ( 0%)
tree aggressive DCE : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
768 kB ( 0%)
tree DSE : 0.05 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
tree loop invariant motion : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
tree canonical iv : 0.04 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
2262 kB ( 1%)
scev constant prop : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
228 kB ( 0%)
complete unrolling : 0.25 ( 1%) 0.02 ( 8%) 0.24 ( 1%)
9319 kB ( 6%)
tree iv optimization : 0.13 ( 1%) 0.01 ( 4%) 0.15 ( 1%)
7884 kB ( 5%)
tree copy headers : 3.15 ( 13%) 0.01 ( 4%) 3.17 ( 13%)
4763 kB ( 3%)
dominance frontiers : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
dominance computation : 0.06 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
0 kB ( 0%)
out of ssa : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
expand vars : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
589 kB ( 0%)
expand : 0.10 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
23667 kB ( 15%)
post expand cleanups : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
forward prop : 0.09 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
908 kB ( 1%)
CSE : 0.11 ( 0%) 0.00 ( 0%) 0.11 ( 0%)
1458 kB ( 1%)
dead code elimination : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
dead store elim1 : 0.08 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
2334 kB ( 1%)
dead store elim2 : 0.06 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
2436 kB ( 2%)
loop init : 0.18 ( 1%) 0.00 ( 0%) 0.21 ( 1%)
8614 kB ( 5%)
loop invariant motion : 0.34 ( 1%) 0.00 ( 0%) 0.45 ( 2%)
151 kB ( 0%)
loop fini : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
branch prediction : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
778 kB ( 0%)
combiner : 0.11 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
1168 kB ( 1%)
integrated RA : 0.28 ( 1%) 0.00 ( 0%) 0.26 ( 1%)
9050 kB ( 6%)
LRA non-specific : 0.12 ( 0%) 0.00 ( 0%) 0.15 ( 1%)
394 kB ( 0%)
LRA virtuals elimination : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
1547 kB ( 1%)
LRA create live ranges : 0.06 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
121 kB ( 0%)
LRA hard reg assignment : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
reload CSE regs : 0.11 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
1373 kB ( 1%)
thread pro- & epilogue : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
4 kB ( 0%)
hard reg cprop : 0.03 ( 0%) 0.01 ( 4%) 0.04 ( 0%)
0 kB ( 0%)
reorder blocks : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
121 kB ( 0%)
shorten branches : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
final : 0.07 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
1178 kB ( 1%)
straight-line strength reduction : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
508 kB ( 0%)
rest of compilation : 0.15 ( 1%) 0.00 ( 0%) 0.16 ( 1%)
1247 kB ( 1%)
remove unused locals : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
address taken : 0.03 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
TOTAL : 24.11 0.26 24.39
161510 kB
>From gcc-bugs-return-639130-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 19:54:28 2019
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From: "liakhdi at ornl dot gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Sun, 31 Mar 2019 19:54:00 -0000
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--- Comment #20 from DIL <liakhdi at ornl dot gov> ---
(In reply to anlauf from comment #19)
> Fixed on trunk and all open branches (7/8).
>
> Closing, as no reduced run-time testcase was provided.
> Please reopen or create a new PR if an issue is found.
>
> Thanks for the report!
Thanks for fixing this bug! Sorry, I have not had time yet to create a reduced
non-trivial test case. Would you still like to add it later if I make it? If
yes, should I just attach it later to this closed bug report?
>From gcc-bugs-return-639131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 20:04:48 2019
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Subject: [Bug fortran/88139] ICE in get_c_type_name, at fortran/dump-parse-tree.c:3047
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gcc dot gnu.org
--- Comment #6 from anlauf at gcc dot gnu.org ---
(In reply to kargl from comment #5)
> (In reply to kargl from comment #4)
> > I had a patch for this, but lost it when committing my last 10 patches.
>
> Thankfully, there are mailing list archives. See
>
> https://gcc.gnu.org/ml/fortran/2018-12/msg00038.html
>
> for the patch.
Steve,
do you plan to submit it before it bit-rots?
>From gcc-bugs-return-639132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 20:06:47 2019
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Sun, 31 Mar 2019 20:06:00 -0000
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--- Comment #21 from anlauf at gcc dot gnu.org ---
(In reply to DIL from comment #20)
> Thanks for fixing this bug! Sorry, I have not had time yet to create a
> reduced non-trivial test case. Would you still like to add it later if I
> make it? If yes, should I just attach it later to this closed bug report?
Just attach it to this PR. I'll try to take care of it.
>From gcc-bugs-return-639133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 20:29:03 2019
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/85868] Subarray of a pointer array associated with a pointer dummy argument
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=52351
--- Comment #7 from anlauf at gcc dot gnu.org ---
PR52351 (Wrong bounds when passing an array section to an intent-in pointer
dummy)
is related to this one.
>From gcc-bugs-return-639134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 20:37:59 2019
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Subject: [Bug c++/89852] [9 Regression] ICE: unexpected expression of kind implicit_conv_expr
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Mar 31 20:37:22 2019
New Revision: 270048
URL: https://gcc.gnu.org/viewcvs?rev=270048&root=gcc&view=rev
Log:
PR c++/89852 - ICE with C++11 functional cast with { }.
* constexpr.c (fold_non_dependent_expr_template): New static function
broken out of...
(fold_non_dependent_expr): ...here.
(fold_non_dependent_init): New function.
* cp-tree.h (fold_non_dependent_init): Declare.
* typeck2.c (massage_init_elt): Call fold_non_dependent_init instead
of fold_non_dependent_expr. Don't call maybe_constant_init.
* g++.dg/cpp0x/initlist115.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist115.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/typeck2.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-639135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 20:48:50 2019
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Subject: [Bug c++/89852] [9 Regression] ICE: unexpected expression of kind implicit_conv_expr
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-639136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 21:00:01 2019
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Subject: [Bug fortran/35276] Doc should described how to compile mixed-language programs
Date: Sun, 31 Mar 2019 21:00:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> (In reply to Jürgen Reuter from comment #4)
> > It seems that at least Thomas and Dominique believe that this can be closed.
>
> with which status?
We need to extend that chapter with the new status for gcc 9 after
Paul's fixes have all gone in.
After that, I we should close this as FIXED.
>From gcc-bugs-return-639137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 21:09:39 2019
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Sun, 31 Mar 2019 21:09:00 -0000
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--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #14)
> https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01478.html
> might also cure this one, without source I cannot tell.
No, it does not help.
>From gcc-bugs-return-639138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 21:13:36 2019
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Subject: [Bug rtl-optimization/88730] [8 Regression] gcc generates wrong debug information at -Og
Date: Sun, 31 Mar 2019 21:13:00 -0000
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--- Comment #4 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisection points to r254888.
>From gcc-bugs-return-639139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 21:15:47 2019
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Subject: [Bug debug/88882] gcc generates wrong debug information at -O1
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--- Comment #2 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisection points to r216247.
>From gcc-bugs-return-639140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 21:36:57 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89878] same specializations on a zero-initialized struct object as a non-type parameter treated as distinct
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The converse of accepting multiple definitions of the same symbol is that valid
redeclarations of the same symbol are rejected as shown in the test case below:
$ cat z.C && gcc -c -Wall -std=c++2a z.C
struct A1 { char c[5]; };
template <A1> struct B { };
typedef B<A1{ { 'A' } }> A_A____;
typedef B<A1{ { 'A', 0 } }> A_AZ___;
typedef B<A1{ { 'A', 0, 0 } }> A_AZZ__;
typedef B<A1{ { 'A', 0, 0, 0 } }> A_AZZZ_;
typedef B<A1{ { 'A', 0, 0, 0, 0 } }> A_AZZZZ;
extern A_A____ same_type_B_A1_A;
extern A_AZ___ same_type_B_A1_A;
extern A_AZZ__ same_type_B_A1_A;
extern A_AZZZ_ same_type_B_A1_A;
extern A_AZZZZ same_type_B_A1_A;
z.C:12:16: error: conflicting declaration ‘A_AZ___ same_type_B_A1_A’
12 | extern A_AZ___ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:11:16: note: previous declaration as ‘A_A____ same_type_B_A1_A’
11 | extern A_A____ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:13:16: error: conflicting declaration ‘A_AZZ__ same_type_B_A1_A’
13 | extern A_AZZ__ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:11:16: note: previous declaration as ‘A_A____ same_type_B_A1_A’
11 | extern A_A____ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:14:16: error: conflicting declaration ‘A_AZZZ_ same_type_B_A1_A’
14 | extern A_AZZZ_ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:11:16: note: previous declaration as ‘A_A____ same_type_B_A1_A’
11 | extern A_A____ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:15:16: error: conflicting declaration ‘A_AZZZZ same_type_B_A1_A’
15 | extern A_AZZZZ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
z.C:11:16: note: previous declaration as ‘A_A____ same_type_B_A1_A’
11 | extern A_A____ same_type_B_A1_A;
| ^~~~~~~~~~~~~~~~
>From gcc-bugs-return-639141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 22:03:00 2019
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Subject: [Bug debug/89791] gcc generates wrong debug information at -O3
Date: Sun, 31 Mar 2019 22:03:00 -0000
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Qirun Zhang <qrzhang at gatech dot edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Qirun Zhang <qrzhang at gatech dot edu> ---
Fixed in r269961.
>From gcc-bugs-return-639142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 22:27:47 2019
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Subject: [Bug debug/89792] gcc generates wrong debug information at -O3
Date: Sun, 31 Mar 2019 22:27:00 -0000
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Qirun Zhang <qrzhang at gatech dot edu> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Qirun Zhang <qrzhang at gatech dot edu> ---
Fixed in r269961.
>From gcc-bugs-return-639143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 31 22:52:47 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89898] New: invalid function template definition with non-type class argument accepted
Date: Sun, 31 Mar 2019 22:52:00 -0000
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Bug ID: 89898
Summary: invalid function template definition with non-type
class argument accepted
Product: gcc
Version: 9.0
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In the following, the invalid function template definition is accepted in c++2a
mode:
$ cat z.C && gcc -c -Wall -std=c++2a z.C
struct A { };
template <A> struct X { };
template<X<A{}> > void f () { } // invalid
>From gcc-bugs-return-639144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 02:37:57 2019
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Subject: [Bug middle-end/89725] [8/9 Regression] ICE in get_fnname_from_decl, at varasm.c:1723
Date: Mon, 01 Apr 2019 02:37:00 -0000
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--- Comment #11 from bin cheng <amker at gcc dot gnu.org> ---
In case of data reference has more access functions than loop_nest of data
dependence analysis, we need to skip/ignore access functions corresponding
loops not in the loop_nest. So far this only happens in loop interchange since
we want to reuse data references collected in outer loop.
During computing classic dist/dir vector, we need to avoid out-of-bound memory
access.
Univariate SCEV can be simply bypassed by checking the loop/chrec_variable as
patch in comment #7. Of course, add_other_self_distances needs to be handled
as well.
On the other hand, bypassing multivariate would be harder and the impact is not
yet clear, however, we can take another strategy handling SCEV of outer loop as
invariant (symbol) to loop_nest during dependence analysis. As a matter of
fact, current code already does in various places, i.e, with calling to
evolution_function_is_invariant_rec_p etc. After scanning, I think the only
piece missing is in analyze_miv_subscript.
I am testing a patch.
>From gcc-bugs-return-639145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 04:17:21 2019
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Subject: [Bug c++/77449] False ambiguity for variadic function with non-deduced template parameter
Date: Mon, 01 Apr 2019 04:17:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
Ever confirmed|0 |1
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Roland B from comment #2)
> (In reply to Eric Gallager from comment #1)
> > As a human reader who doesn't know C++ very well I'd consider it to be
> > ambiguous, too... maybe as a compromise the error could be downgraded to a
> > warning?
>
> "int" is more specified than "typename Check", see also
> http://stackoverflow.com/a/39295906/2173029
>
> g++ agrees to this under pretty much all circumstances, except this one with
> a parameter pack.
OK I'll take your word for it then, I guess, and confirm it... adding the
"rejects-valid" keyword because that's what it sounds like it is
>From gcc-bugs-return-639146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 04:19:42 2019
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Subject: [Bug debug/42065] DWARF .debug_macinfo contains unused macros
Date: Mon, 01 Apr 2019 04:19:00 -0000
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> If -feliminate-unused-debug-symbols and/or -feliminate-unused-debug-types
> start removing these, I'd want them to turn on -Wunused-macros automatically
> for me as well so I can know about it
Does the EnabledBy() thing in .opt files work across the -f/-W option prefix
boundary, or are only warnings able to enable other warnings?
>From gcc-bugs-return-639147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 04:22:27 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/46476] Missing Warning about unreachable code after return [-Wunreachable-code-return]
Date: Mon, 01 Apr 2019 04:22:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Blocks| |89863
--- Comment #17 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #16)
> (In reply to Manuel López-Ibáñez from comment #14)
> > But the main barrier for this is not technical or acceptance, it is
> > leadership and human resources.
>
> And the usual time and money. There are plenty of static analysers out there.
> Unless it is substantially better, why write another one ?
>
> My favourite static analyser, cppcheck, says this for the original code:
>
> $ ~/cppcheck/trunk/cppcheck --enable=all bug46476.cc
> [bug46476.cc:5]: (style) Statements following return, break, continue, goto
> or throw will never be executed.
> [bug46476.cc:11]: (style) Statements following return, break, continue, goto
> or throw will never be executed.
> [bug46476.cc:8]: (style) The function 'bar' is never used.
> [bug46476.cc:2]: (style) The function 'foo' is never used.
> $
>
> which pretty much does the job.
>
> Running the same static analyser over the source code of a recent gcc
> found 22 occurrences of this kind of problem.
>
> Here they are:
>
> $ fgrep "Statements following" cppcheck.20170617.out
> [trunk/gcc/c/c-decl.c:3211]: (style) Statements following return, break,
> continue, goto or throw will never be executed.
> [trunk/gcc/fortran/arith.c:2009]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/dwarf.c:2709]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/dwarf.c:2758]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/dwarf.c:2892]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/dwarf.c:3025]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/elf.c:448]: (style) Statements following return, break,
> continue, goto or throw will never be executed.
> [trunk/libbacktrace/elf.c:493]: (style) Statements following return, break,
> continue, goto or throw will never be executed.
> [trunk/libbacktrace/elf.c:967]: (style) Statements following return, break,
> continue, goto or throw will never be executed.
> [trunk/libbacktrace/fileline.c:64]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/fileline.c:75]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/pecoff.c:499]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/pecoff.c:564]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libbacktrace/pecoff.c:931]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libcilkrts/runtime/cilk_fiber.cpp:968]: (style) Statements following
> return, break, continue, goto or throw will never be executed.
> [trunk/libcilkrts/runtime/scheduler.c:2468]: (style) Statements following
> return, break, continue, goto or throw will never be executed.
> [trunk/libcilkrts/runtime/scheduler.c:2550]: (style) Statements following
> return, break, continue, goto or throw will never be executed.
> [trunk/libcilkrts/runtime/scheduler.c:2439]: (style) Statements following
> return, break, continue, goto or throw will never be executed.
> [trunk/libffi/src/dlmalloc.c:3877]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libgomp/error.c:90]: (style) Statements following return, break,
> continue, goto or throw will never be executed.
> [trunk/libgomp/libgomp-plugin.c:79]: (style) Statements following return,
> break, continue, goto or throw will never be executed.
> [trunk/libobjc/error.c:41]: (style) Statements following return, break,
> continue, goto or throw will never be executed.
> $
>
> Most of them seem to be in libbacktrace. I could look deeper into these
> and generate some bug reports. That's the usual way to provoke gcc developers
> into developing a new warning: show that the gcc source code would benefit
> from it.
Dunno how I missed this when I created the new cppcheck meta-bug; adding this
as a dependency for it now
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863
[Bug 89863] [meta-bug] Issues that cppcheck finds that gcc misses
>From gcc-bugs-return-639148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 04:25:11 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/64196] No automated test coverage for debugging of JIT-generated code
Date: Mon, 01 Apr 2019 04:25:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> (In reply to David Malcolm from comment #0)
> > gcc/jit/docs/intro/tutorial04.rst shows an example of debugging,
> > single-stepping through JIT-generated code in gdb [1].
> >
> > This was all tested by hand. We don't yet have any automated test coverage
> > to verify that this works.
> >
> > [1]: built HTML version of this currently here:
> > https://dmalcolm.fedorapeople.org/gcc/libgccjit-api-docs/intro/tutorial04.
> > html#single-stepping-through-the-generated-code
>
> Are you still working on this?
Guess not; unassigning
>From gcc-bugs-return-639149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 04:27:21 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/52357] 64bit-out.go and go.test/test/cmplxdivide.go time out on Solaris/SPARC
Date: Mon, 01 Apr 2019 04:27:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |SUSPENDED
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> (In reply to Ian Lance Taylor from comment #3)
> > The 64bit-out.go case appears to be similar. It is also a generated file,
> > and it also takes a long time to compile. The register allocator is not
> > quite as dominant, only 43% of compilation time. In any case I will revisit
> > 64bit-out when and if cmplxdivide is fixed.
>
> Has cmplxdivide been fixed yet?
No reply; changing to SUSPENDED since this isn't really a case where closing as
INVALID (due to lack of response) is applicable
>From gcc-bugs-return-639150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 04:28:59 2019
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Subject: [Bug jit/66074] gcc_jit_result_get_code returns a void*
Date: Mon, 01 Apr 2019 04:28:00 -0000
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
David, are you the assignee on this because you're actually working on it, or
just because that's the default for bugs filed under the "jit" component?
>From gcc-bugs-return-639151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 06:49:41 2019
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Subject: [Bug ipa/89893] Segmentation fault always occurs when node app is generated by gcc-8-branch@268745
Date: Mon, 01 Apr 2019 06:49:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-04-01
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm working on that..
>From gcc-bugs-return-639152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:06:01 2019
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From: "hos.lee at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89899] New: g++ compiler error report
Date: Mon, 01 Apr 2019 07:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89899
Bug ID: 89899
Summary: g++ compiler error report
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hos.lee at samsung dot com
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Dear,
I have a question about g++ compiler when running the below example.
[ used compiler ]
- Welcome to Ubuntu 16.04.5 LTS (GNU/Linux 4.4.0-17134-Microsoft x86_64)
- g++ test.cpp -lpthread
There is a "test program" I checked in the below.
With next statement in test program, error is occurred.
- que[head++] = data;
However, with next statement in test program, error is not occurred.
- que[head] = data;
head++;
"que[head++] = data;" and "que[head] = data; head++;" is exactly same.
I confused why "que[head++] = data;" statement happened error only.
I also checked FAQ below and I do not find why this error is happened.
Please check this bug report and feedback to me.
Thank you very much.
[ Test Program ]
---------------------------------------------------------------------
#include <stdio.h>
#include <pthread.h>
volatile int DONE = 0;
volatile int que[65536];
volatile unsigned short head = 0;
volatile unsigned short tail = 0;
void in(int data)
{
while ((tail - head == 1) || (head - tail == 65535));
que[head++] = data;
// que[head] = data;
// head++;
}
int out(void)
{
while (head == tail);
return que[tail++];
}
void* test0(void* param)
{
for (int c = 0; c < 10000000; c++) in(c);
putchar('0'); DONE++;
}
void* test1(void* param)
{
for (int c = 0; c < 10000000; c++) if (out() != c) putchar('E');
putchar('1'); DONE++;
}
int main(void)
{
pthread_t thread1;
pthread_t thread2;
pthread_create(&thread1, NULL, test0, (void*)0);
pthread_create(&thread2, NULL, test1, (void*)0);
while (DONE < 2);
}
------------------------------------------------------------------------
[ Frequently Reported Bugs ]
Increment/decrement operator (++/--) not working as expected - a problem with
many variations.
The following expressions have unpredictable results:
x[i]=++i
foo(i,++i)
i*(++i) /* special case with foo=="operator*" */
std::cout << i << ++i /* foo(foo(std::cout,i),++i) */
since the i without increment can be evaluated before or after ++i.
The C and C++ standards have the notion of "sequence points". Everything that
happens between two sequence points happens in an unspecified order, but it has
to happen after the first and before the second sequence point. The end of a
statement and a function call are examples for sequence points, whereas
assignments and the comma between function arguments are not.
Modifying a value twice between two sequence points as shown in the following
examples is even worse:
i=++i
foo(++i,++i)
(++i)*(++i) /* special case with foo=="operator*" */
std::cout << ++i << ++i /* foo(foo(std::cout,++i),++i) */
This leads to undefined behavior (i.e. the compiler can do anything).
>From gcc-bugs-return-639153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:07:16 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89896] -flto=4 is confused by presence of 'all.c' in a local directory. -flto=1 is not.
Date: Mon, 01 Apr 2019 07:07:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
CC| |hjl.tools at gmail dot com,
| |hubicka at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, minimal reproducer:
$ echo "" | gcc -shared -fPIC -flto=2 -x c -
/usr/lib64/gcc/x86_64-suse-linux/8/../../../../x86_64-suse-linux/bin/ld:
/usr/lib64/gcc/x86_64-suse-linux/8/../../../../lib64/../lib64/crt1.o: in
function `_start':
/home/abuild/rpmbuild/BUILD/glibc-2.29/csu/../sysdeps/x86_64/start.S:104:
undefined reference to `main'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: all] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
/usr/lib64/gcc/x86_64-suse-linux/8/../../../../x86_64-suse-linux/bin/ld: error:
lto-wrapper failed
collect2: error: ld returned 1 exit status
Looks to me a LD issue.
@H.J. can you please take a look?
>From gcc-bugs-return-639154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:11:39 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89899] g++ compiler error report
Date: Mon, 01 Apr 2019 07:11:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You need to use locks or atomics to get correct behavior across threads.
See https://en.wikipedia.org/wiki/Thread_safety for a simplified view on this.
>From gcc-bugs-return-639155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:13:14 2019
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Subject: [Bug fortran/89840] [Coarray] CO_BROADCAST: Missing finalization/deallocation of allocatable components
Date: Mon, 01 Apr 2019 07:13:00 -0000
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--- Comment #2 from Damian Rouson <damian at sourceryinstitute dot org> ---
The PR was cited in the original description: Bug 64777. It was closed for
lack of a test cased and the person who closed it suggested opening a new PR if
a test case was provided so I attempted to do so. Upon consulting the Fortran
2018 standard, however, I see not evidence that first argument of CO_BROADCAST
will be finalized so this PR can be closed.
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Damian Rouson <damian at sourceryinstitute dot org> changed:
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Subject: [Bug c/71598] Wrong optimization with aliasing enums
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Apr 1 07:16:38 2019
New Revision: 270052
URL: https://gcc.gnu.org/viewcvs?rev=270052&root=gcc&view=rev
Log:
2019-04-01 Richard Biener <rguenther@suse.de>
PR c/71598
* gimple.c: Include langhooks.h.
(gimple_get_alias_set): Treat enumeral types as the underlying
integer type.
c/
* c-tree.h (c_get_alias_set): Declare.
* c-objc-common.h (LANG_HOOKS_GET_ALIAS_SET): Use c_get_alias_set.
* c-objc-common.c (c_get_alias_set): Treat enumeral types
as the underlying integer type.
* gcc.dg/torture/pr71598-1.c: New testcase.
* gcc.dg/torture/pr71598-2.c: Likewise.
* gcc.dg/torture/pr71598-3.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr71598-1.c
trunk/gcc/testsuite/gcc.dg/torture/pr71598-2.c
trunk/gcc/testsuite/gcc.dg/torture/pr71598-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-objc-common.c
trunk/gcc/c/c-objc-common.h
trunk/gcc/c/c-tree.h
trunk/gcc/gimple.c
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Subject: [Bug c/71598] Wrong optimization with aliasing enums
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |9.0
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Known to fail| |7.4.0, 8.3.0
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 9+.
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Subject: =?UTF-8?B?W0J1ZyBkcml2ZXIvODk4NjFdIGcrKy04OiBlcnJvcjogdW5yZWNvZ25pemVk?= =?UTF-8?B?IGNvbW1hbmQgbGluZSBvcHRpb24g4oCYLWZzYW5pdGl6ZeKAmQ==?Date: Mon, 01 Apr 2019 07:18:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk, not planning to backport.
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Subject: [Bug target/80782] Configure options to use llvm/clang assembler on Mac
Date: Mon, 01 Apr 2019 07:18:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #13 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #12)
> AFAIK the use of the clang assembler (i.e. calling cctools as which then
> spawns clang -cc1as) is working on all open branches (and on the closed 6.5).
>
> please could you be more specific about exactly what's not working?
> - i.e if you're on an older version of the OS.
> - version of Xcode.
>
> Note that the default for which assembler backend is called does depend on
> the Xcode version.
This is probably material for a separate bug, but the MacPorts package for GCC
8 uses the clang assembler from the clang-3.4 port on my system, and apparently
all includes flags get passed to it, so it prints out all sorts of messages
like:
clang: warning: argument unused during compilation: '-I .'
when compiling with it. The driver specs might need to be hacked to stop
passing '-I' flags to the assembler that it won't use. Currently I'm working
around it by prefixing all '-I' flags with '-Wp,' so that only the preprocessor
sees them, but that doesn't work for other tools (e.g. splint) that accept '-I'
flags but not '-Wp,' flags. It also breaks fortran-style includes in gfortran
since apparently they're different from the kind seen in the C preprocessor.
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Apr 1 07:17:38 2019
New Revision: 270053
URL: https://gcc.gnu.org/viewcvs?rev=270053&root=gcc&view=rev
Log:
Enhance option suggestion for options expected an argument (PR driver/89861).
2019-04-01 Martin Liska <mliska@suse.cz>
PR driver/89861
* opt-suggestions.c (option_proposer::build_option_suggestions):
Add variant without any argument in order to provide better
hints.
2019-04-01 Martin Liska <mliska@suse.cz>
PR driver/89861
* gcc.dg/spellcheck-options-18.c: New test.
* gcc.dg/spellcheck-options-19.c: New test.
* gcc.dg/spellcheck-options-20.c: New test.
* gcc.dg/spellcheck-options-13.c: Adjust expected output.
* gcc.dg/completion-2.c: Add one variant with no argument.
Added:
trunk/gcc/testsuite/gcc.dg/spellcheck-options-18.c
trunk/gcc/testsuite/gcc.dg/spellcheck-options-19.c
trunk/gcc/testsuite/gcc.dg/spellcheck-options-20.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/opt-suggestions.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/completion-2.c
trunk/gcc/testsuite/gcc.dg/spellcheck-options-13.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Mon, 01 Apr 2019 07:26:00 -0000
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--- Comment #33 from rguenther at suse dot de <rguenther at suse dot de> ---
On Sat, 30 Mar 2019, segher at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87984
>
> --- Comment #32 from Segher Boessenkool <segher at gcc dot gnu.org> ---
> Historically, a local register asm variable *does* live in that variable
> for its entire scope. This stopped working correctly, even with the many
> caveats there were for it, and many years ago the manual added language
> saying that only using such a var in an extended asm in or out is supported,
> and there was language warning you to keep the life time short, etc.
>
> This did *not* change the implementation. Any other use still is explicitly
> unsupported, and all such testcases are invalid code.
Hmm, but that means the only effect of a local reg var would be
implicit input/output constraints, right? Of course there's also
calls(?) that would need to remat all local register vars.
The asm part could be easily represented on GIMPLE by making those
constraints explicit. The call issue would need explicit save/restore
code which is then exposed to optimization passes.
But then...
> It would be nice if GCC was changed such that such vars were expanded to a
> pseudo like any other var, and copies to/from a hard reg just around the asm.
> Gimple doesn't need to do *anything* for that, just keep track that the var
> is declared as local register var, and the gimple it had now at expand is
> just fine:
... all this could be done at RTL expansion time as well.
Still in GIMPLE we'd have to treat calls at modifying/using
local reg vars? That leaves us with forcing of virtual operands
on all calls eventually using those vars.
>From gcc-bugs-return-639163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:48:51 2019
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Subject: [Bug debug/89892] gcc generates wrong debug information at -O2
Date: Mon, 01 Apr 2019 07:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
CC| |aoliva at gcc dot gnu.org
Version|unknown |9.0
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. The issue is we end up with
<bb 6> [local count: 14598062]:
# DEBUG BEGIN_STMT
# DEBUG i => 0
# DEBUG BEGIN_STMT
# DEBUG d => 1
goto <bb 9>; [100.00%]
as a forwarder block which CFG cleanup is about to remove. But both
single predecessor and successor edges are critical so we cannot move
the debug stmts. Instead we removed them...
Conservatively we'd have to still move them but instead of inserting
i => 0 we'd have to insert i => NULL, possibly trading debug info
quality in the predecessor/successor for debug info correctness.
As said elsewhere having debug stmts on edges might be a solution to this...
We could also in general avoid removing forwarders connecting two blocks
we could not move debug stmts to (but we'd have to do this irrespective
of their presence). The same issue likely exists on RTL where not
eliminating such forwarder might become costly (unless we can convince us BB
reorder can fixup things so no extra jump will occur with/without such
forwarder).
In this particular case liveness analysis could tell us moving the i => 0
to the successor is OK and moving the d association to the predecessor
is as well (because it already exists there). But that's something we
generally do not want to do (in CFG cleanup anyways).
IIRC I've seen this forwarder-removal in a duplicate bug.
tree_forwarder_block_p explicitely spells out the issue:
/* ??? For now, hope there's a corresponding debug
assignment at the destination. */
case GIMPLE_DEBUG:
break;
>From gcc-bugs-return-639164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:51:15 2019
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Subject: [Bug rtl-optimization/80960] [7/8/9 Regression] Huge memory use when compiling a very large test case
Date: Mon, 01 Apr 2019 07:51:00 -0000
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--- Comment #14 from rguenther at suse dot de <rguenther at suse dot de> ---
On Sun, 31 Mar 2019, tkoenig at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80960
>
> --- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
> With -O2, the combiner takes up quite a lot of time:
>
> $ time gfortran -ftime-report -g0 -O2 -fdefault-integer-8 -c fe_objective.f90
>
> alias stmt walking : 15.75 ( 4%) 0.11 ( 5%) 15.89 ( 4%)
> 2 kB ( 0%)
> dead store elim2 : 10.49 ( 2%) 0.33 ( 16%) 10.82 ( 3%)
> 1578727 kB ( 35%)
> combiner : 346.20 ( 81%) 0.89 ( 44%) 347.17 ( 81%)
> 2701135 kB ( 60%)
> TOTAL : 428.68 2.01 430.83
> 4504484 kB
>
> With -O1, this now has as biggest consumers of cycles
>
> alias stmt walking : 11.80 ( 31%) 0.04 ( 13%) 11.78 ( 31%)
> 2 kB ( 0%)
> integrated RA : 5.61 ( 15%) 0.06 ( 20%) 5.67 ( 15%)
> 34896 kB ( 10%)
> LRA hard reg assignment : 4.69 ( 12%) 0.00 ( 0%) 4.69 ( 12%)
> 0 kB ( 0%)
> TOTAL : 37.68 0.30 38.00
> 364905 kB
>
>
> which does not look too bad (and memory consumption has remained constant).
>
> Note that this is with checking enabled.
You can mitigate enabled checking somewhat with -fno-checking.
>From gcc-bugs-return-639165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:54:42 2019
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Subject: [Bug debug/89791] gcc generates wrong debug information at -O3
Date: Mon, 01 Apr 2019 07:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |DUPLICATE
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Thus a duplicate.
*** This bug has been marked as a duplicate of bug 89463 ***
>From gcc-bugs-return-639166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 07:54:43 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Mon, 01 Apr 2019 07:54:00 -0000
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89791 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-639167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 08:39:43 2019
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Subject: [Bug ipa/89893] Segmentation fault always occurs when node app is generated by gcc-8-branch@268745
Date: Mon, 01 Apr 2019 08:39:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed with following backtrace:
#0 0x0000000001301f52 in node::PerIsolatePlatformData::RunForegroundTask
(task=...) at /usr/include/c++/8/bits/unique_ptr.h:342
#1 0x0000000001303523 in node::PerIsolatePlatformData::RunForegroundTask
(handle=<optimized out>) at /usr/include/c++/8/bits/move.h:74
#2 0x000000000082b7f5 in uv__run_timers (loop=0x1d48520
<default_loop_struct.lto_priv>) at ../deps/uv/src/timer.c:174
#3 uv_run.constprop.3010 (loop=0x1d48520 <default_loop_struct.lto_priv>,
mode=UV_RUN_DEFAULT) at ../deps/uv/src/unix/core.c:361
#4 0x000000000138c045 in node::Start (isolate=<optimized out>,
isolate_data=<optimized out>, args=..., exec_args=...) at ../src/env-inl.h:661
#5 0x000000000138cae5 in node::Start (exec_args=std::vector of length 0,
capacity 0, args=<error reading variable: Missing ELF symbol "args".>,
event_loop=<optimized out>) at ../src/node.cc:2969
#6 node::Start (argc=<optimized out>, argv=<optimized out>) at
../src/node.cc:3029
#7 0x00007ffff778db7b in __libc_start_main (main=0x805c80 <main(int, char**)>,
argc=2, argv=0x7fffffffdc58, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffffffdc48) at ../csu/libc-start.c:308
#8 0x0000000000805e1a in _start () at ../sysdeps/x86_64/start.S:120
and:
load(base_dir + 'base.js');
load(base_dir + 'regexp.js');
Note that the culprit revision changed quite significantly IPA inling. That's
why it very likely exposed a latent issue. I'm debugging nodejs right now.
>From gcc-bugs-return-639168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 08:41:45 2019
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Subject: [Bug tree-optimization/46590] long compile time with -O2 and many loops
Date: Mon, 01 Apr 2019 08:41:00 -0000
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--- Comment #49 from Richard Biener <rguenth at gcc dot gnu.org> ---
I have a fix for the copy-headers issue. Afterwards:
tree copy headers : 0.03 ( 0%) 0.01 ( 3%) 0.03 ( 0%)
4763 kB ( 3%)
with the remaining worst offenders being
df live&initialized regs : 10.97 ( 53%) 0.02 ( 6%) 11.11 ( 52%)
0 kB ( 0%)
alias stmt walking : 1.85 ( 9%) 0.07 ( 21%) 2.08 ( 10%)
92 kB ( 0%)
and the DF time is all spent in RTL invariant motion:
loop invariant motion : 0.44 ( 2%) 0.00 ( 0%) 0.40 ( 2%)
151 kB ( 0%)
`- df live regs : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
`- df reaching defs : 0.84 ( 4%) 0.02 ( 6%) 0.96 ( 5%)
0 kB ( 0%)
`- df live&initialized regs : 11.10 ( 54%) 0.01 ( 3%) 11.02 ( 52%)
0 kB ( 0%)
`- df use-def / def-use chains : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
alias stmt waling is spent in FRE/DOM (that's expected):
tree FRE : 0.75 ( 4%) 0.01 ( 3%) 0.91 ( 4%)
2505 kB ( 2%)
`- alias stmt walking : 1.75 ( 8%) 0.02 ( 6%) 1.63 ( 8%)
92 kB ( 0%)
dominator optimization : 0.19 ( 1%) 0.01 ( 3%) 0.22 ( 1%)
5850 kB ( 4%)
`- tree operand scan : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
`- alias stmt walking : 0.11 ( 1%) 0.01 ( 3%) 0.08 ( 0%)
0 kB ( 0%)
`- loop init : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
788 kB ( 0%)
`- tree CFG cleanup : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
>From gcc-bugs-return-639169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 09:29:28 2019
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Subject: [Bug tree-optimization/46590] long compile time with -O2 and many loops
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
--- Comment #50 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue with loop-invariant and DF is that while loop-invariant tries to
use df_analyze_loop to constrain work we do
df_remove_problem (df_chain);
df_process_deferred_rescans ();
df_chain_add_problem (DF_UD_CHAIN);
df_live_add_problem ();
df_live_set_all_dirty ();
df_set_flags (DF_RD_PRUNE_DEAD_DEFS);
df_analyze_loop (loop);
where df_live_set_all_dirty sets bits for all blocks in the function
to df_live->out_of_date_transfer_functions and for example
df_live_local_compute
iterates over df_live->out_of_date_transfer_functions instead of
the blocks set by df_set_blocks.
Now I'm not sure DF_LIVE results are even correct if computed only for
a loop, but certainly df_analyze_loop sets up the postorder arrays to
only contain blocks in the loop.
The most localized fix would be to somehow split df_analyze_loop ()
into df_set_loop_to_analyze () and the (existing) df_analyze_1 () so
df_live_set_all_dirty could look at the to be analyzed blocks instead
of iterating over all blocks.
Of course df_analyze () itself computes postorder and friends :/
Just cutting out df_live_local_compute via the hack below improves
the DF time to
df live&initialized regs : 0.11 ( 1%) 0.00 ( 0%) 0.18 ( 2%)
0 kB ( 0%)
but I believe the proper way of action would be to split DF setup
from DF analyse but that needs changes in all consumers. That way
the problem setup could already restrict work (that part is still
quadratic with the hack below - I see multiple iterations over
out_of_date_transfer_functions left). Other live methods already
iterate only over the input bitmap but there are some left iterating
over out_of_date_transfer_functions as well.
Index: gcc/df-problems.c
===================================================================
--- gcc/df-problems.c (revision 270053)
+++ gcc/df-problems.c (working copy)
@@ -1470,18 +1470,16 @@ df_live_bb_local_compute (unsigned int b
/* Compute local uninitialized register info. */
static void
-df_live_local_compute (bitmap all_blocks ATTRIBUTE_UNUSED)
+df_live_local_compute (bitmap all_blocks)
{
unsigned int bb_index;
bitmap_iterator bi;
df_grow_insn_info ();
- EXECUTE_IF_SET_IN_BITMAP (df_live->out_of_date_transfer_functions,
+ EXECUTE_IF_AND_IN_BITMAP (all_blocks,
df_live->out_of_date_transfer_functions,
0, bb_index, bi)
- {
- df_live_bb_local_compute (bb_index);
- }
+ df_live_bb_local_compute (bb_index);
bitmap_clear (df_live->out_of_date_transfer_functions);
}
Any opinions? I'm going to test the above in any way since I've seen
this pop up multiple times (loop-iv is another consumer of df_analyze_loop,
but it uses the UD_CHAIN problem only). It's out_of_date_transfer_functions
state gets adjusted by df_scan_blocks appearantly (it's docs say), so maybe
not calling df_live_set_all_dirty at all from loop-invariant.c would be
a better fix but I see a lot of calls to df_live_set_all_dirty...
(find_defs doesn't remove the LIVE problem but just adds it all the time,
also "leaking" out_of_date_transfer_functions).
As expected not calling df_live_set_all_dirty also solves the issue.
Note df_live_add_problem says:
void
df_live_add_problem (void)
{
df_add_problem (&problem_LIVE);
/* These will be initialized when df_scan_blocks processes each
block. */
df_live->out_of_date_transfer_functions = BITMAP_ALLOC (&df_bitmap_obstack);
supporting that change. And df_live_set_all_dirty is commented as
/* Set all of the blocks as dirty. This needs to be done if this
problem is added after all of the insns have been scanned. */
but the incosistency betwee the UD and LIVE problems here is disturbing.
Removing the set_all_dirty call shows the visiting doesn't happen.
>From gcc-bugs-return-639170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 09:44:43 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/46590] long compile time with -O2 and many loops
Date: Mon, 01 Apr 2019 09:44:00 -0000
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--- Comment #51 from Richard Biener <rguenth at gcc dot gnu.org> ---
Alternative patch, the first one doesn't seem to work (probably
all_blocks is sometimes NULL, will debug).
Index: gcc/df.h
===================================================================
--- gcc/df.h (revision 270053)
+++ gcc/df.h (working copy)
@@ -1023,6 +1023,7 @@ extern void df_lr_verify_transfer_functi
extern void df_live_verify_transfer_functions (void);
extern void df_live_add_problem (void);
extern void df_live_set_all_dirty (void);
+extern void df_live_set_loop_dirty (struct loop *);
extern void df_chain_add_problem (unsigned int);
extern void df_word_lr_add_problem (void);
extern bool df_word_lr_mark_ref (df_ref, bool, bitmap);
Index: gcc/df-problems.c
===================================================================
--- gcc/df-problems.c (revision 270053)
+++ gcc/df-problems.c (working copy)
@@ -36,6 +36,7 @@ along with GCC; see the file COPYING3.
#include "valtrack.h"
#include "dumpfile.h"
#include "rtl-iter.h"
+#include "cfgloop.h"
/* Note that turning REG_DEAD_DEBUGGING on will cause
gcc.c-torture/unsorted/dump-noaddr.c to fail because it prints
@@ -1774,6 +1775,18 @@ df_live_set_all_dirty (void)
}
+/* Set all of the blocks of LOOP as dirty. This needs to be done if this
+ problem is added after all of the insns have been scanned. */
+
+void
+df_live_set_loop_dirty (struct loop *loop)
+{
+ basic_block *bbs = get_loop_body (loop);
+ for (unsigned i = 0; i < loop->num_nodes; ++i)
+ bitmap_set_bit (df_live->out_of_date_transfer_functions, bbs[i]->index);
+}
+
+
/* Verify that all of the lr related info is consistent and
correct. */
Index: gcc/loop-invariant.c
===================================================================
--- gcc/loop-invariant.c (revision 270053)
+++ gcc/loop-invariant.c (working copy)
@@ -685,7 +685,7 @@ find_defs (struct loop *loop)
df_process_deferred_rescans ();
df_chain_add_problem (DF_UD_CHAIN);
df_live_add_problem ();
- df_live_set_all_dirty ();
+ df_live_set_loop_dirty (loop);
df_set_flags (DF_RD_PRUNE_DEAD_DEFS);
df_analyze_loop (loop);
check_invariant_table_size ();
>From gcc-bugs-return-639171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 10:23:55 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89900] New: [9 Regression] ICE: Segmentation fault (in check_instantiated_arg)
Date: Mon, 01 Apr 2019 10:23:00 -0000
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Bug ID: 89900
Summary: [9 Regression] ICE: Segmentation fault (in
check_instantiated_arg)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
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g++-9.0.0-alpha20190331 snapshot (r270048) ICEs when compiling the following
testcase:
template<typename SX, typename ...XE> void
fk (XE..., SW);
void
w9 (void)
{
fk<int> (0);
}
% g++-9.0.0-alpha20190331 -c b9rp7pts.cc
b9rp7pts.cc:2:12: error: 'SW' has not been declared
2 | fk (XE..., SW);
| ^~
b9rp7pts.cc: In substitution of 'template<class SX, class ... XE> void fk(XE
..., int) [with SX = int; XE = <missing>]':
b9rp7pts.cc:7:13: required from here
b9rp7pts.cc:7:13: internal compiler error: Segmentation fault
7 | fk<int> (0);
| ^
0xf75abf crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/toplev.c:326
0x9c3505 check_instantiated_arg
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/pt.c:19573
0x9c38d1 check_instantiated_args
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/pt.c:19645
0x9d0dea instantiate_template_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/pt.c:19745
0x9d0dea instantiate_template(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/pt.c:19849
0x9fe88f fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, conversion**, bool,
bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/pt.c:20283
0x88581f add_template_candidate_real
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/call.c:3315
0x886226 add_template_candidate
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/call.c:3400
0x886226 add_candidates
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/call.c:5725
0x88b943 add_candidates
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/call.c:4391
0x88b943 perform_overload_resolution
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/call.c:4399
0x88ec05 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/call.c:4473
0xa1bc1d finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/semantics.c:2585
0x998887 cp_parser_postfix_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:7383
0x9a61d9 cp_parser_unary_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:8469
0x97f112 cp_parser_cast_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:9355
0x97f9ba cp_parser_binary_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:9458
0x980a06 cp_parser_assignment_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:9756
0x980d89 cp_parser_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:9923
0x984285 cp_parser_expression_statement
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190331/work/gcc-9-20190331/gcc/cp/parser.c:11512
>From gcc-bugs-return-639172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 10:58:54 2019
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Subject: [Bug c++/89899] g++ compiler error report
Date: Mon, 01 Apr 2019 10:58:00 -0000
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--- Comment #2 from hosang <hos.lee at samsung dot com> ---
Our member mentioned this code is lock-free implementation for performance.
The gcc result is different from msvc.
Is there any chance impractical memory write reorder by gcc?
Thank you very much
>From gcc-bugs-return-639173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:17:17 2019
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Subject: [Bug c++/89897] suggest header for SIGABRT
Date: Mon, 01 Apr 2019 11:17:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
POSIX defines some etra ones, but the signal names defined in the standard are:
SIG_DFL SIG_ERR SIG_ING SIGABRT SIGFPE SIGILL SIGINT SIGSEGV SIGTERM
We should handle those ones at least.
>From gcc-bugs-return-639174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:18:42 2019
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Subject: [Bug rtl-optimization/87763] [9 Regression] aarch64 target testcases fail after r265398
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tnfchris at gcc dot gnu.org
--- Comment #33 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
After Wilco's patch the remaining failures seem to be
FAIL: gcc.target/aarch64/insv_2.c scan-assembler bfi\tx[0-9]+, x[0-9]+, 43, 5
FAIL: gcc.target/aarch64/insv_2.c scan-assembler bfi\tx[0-9]+, x[0-9]+, 56, 8
FAIL: gcc.target/aarch64/insv_2.c scan-assembler movk\tx[0-9]+, 0x1d6b, lsl 16
FAIL: gcc.target/aarch64/combine_bfi_1.c scan-assembler-times \\tbfi\\t 5
FAIL: gcc.target/aarch64/lsl_asr_sbfiz.c scan-assembler sbfiz\tw
FAIL: gcc.target/aarch64/insv_1.c scan-assembler bfi\tx[0-9]+, x[0-9]+, 0, 8
FAIL: gcc.target/aarch64/insv_1.c scan-assembler bfi\tx[0-9]+, x[0-9]+, 16, 5
FAIL: gcc.target/aarch64/insv_1.c scan-assembler movk\tx[0-9]+, 0x1d6b, lsl 32
>From gcc-bugs-return-639175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:19:41 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89901] New: carat of build error at wrong letter
Date: Mon, 01 Apr 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89901
Bug ID: 89901
Summary: carat of build error at wrong letter
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jg at jguk dot org
Target Milestone: ---
Could g++ indicate the carat on returned var?
C++ Godbolt trunk actual:
10 | const char **a = f();
| ~^~
C++ Expected:
10 | const char **a = f();
| ~^~
#1 with x86-64 gcc (trunk)
<source>: In function 'int main()':
<source>:10:23: error: invalid conversion from 'char**' to 'const char**'
[-fpermissive]
10 | const char **a = f();
| ~^~
| |
| char**
Compiler returned: 1
As "C"
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:10:22: warning: initialization of 'const char **' from incompatible
pointer type 'char **' [-Wincompatible-pointer-types]
10 | const char **a = f();
| ^
Compiler returned: 0
#include <stdlib.h>
char ** f()
{
char ** a = (char**)malloc(sizeof(char*) *4);
return a;
}
int main()
{
const char **a = f(); // Take off the "const" to stop the error
}
>From gcc-bugs-return-639176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:20:15 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89899] g++ compiler error report
Date: Mon, 01 Apr 2019 11:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89899
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
With the MSVC compiler 'volatile' has additional non-standard semantics.
You need to use locks or atomics for other compilers.
http://isvolatileusefulwiththreads.in/c++
>From gcc-bugs-return-639177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:23:12 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89886] the local array data will be laid in different section by different optimization level
Date: Mon, 01 Apr 2019 11:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89886
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So? It's a feature (optimization).
>From gcc-bugs-return-639178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:23:36 2019
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89902] New: ICE: in extract_insn, at recog.c:2310: unrecognizable insn with -mavx512bitalg
Date: Mon, 01 Apr 2019 11:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89902
Bug ID: 89902
Summary: ICE: in extract_insn, at recog.c:2310: unrecognizable
insn with -mavx512bitalg
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: i686-pc-linux-gnu
Created attachment 46065
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46065&action=edit
reduced testcase
Compiler output:
$ i686-pc-linux-gnu-gcc -O2 -fno-tree-coalesce-vars -mavx512bitalg testcase.c
testcase.c: In function 'foo':
testcase.c:8:1: error: unrecognizable insn:
8 | }
| ^
(insn 7 6 17 2 (set (subreg:V2DI (reg/v:DI 86 [ x ]) 0)
(ashift:V2DI (subreg:V2DI (reg/v:DI 86 [ x ]) 0)
(subreg:QI (subreg:V2DI (reg/v:DI 86 [ x ]) 0) 0)))
"testcase.c":5:5 -1
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
during RTL pass: subreg2
testcase.c:8:1: internal compiler error: in extract_insn, at recog.c:2310
0x67b7f2 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.c:108
0x67b86e _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.c:116
0x671060 extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.c:2310
0x1842257 decompose_multiword_subregs
/repo/gcc-trunk/gcc/lower-subreg.c:1540
0x18439ed execute
/repo/gcc-trunk/gcc/lower-subreg.c:1807
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ i686-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-270053-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.1/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-sysroot=/usr/i686-pc-linux-gnu
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld
--with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-270053-checking-yes-rtl-df-extra-i686
Thread model: posix
gcc version 9.0.1 20190401 (experimental) (GCC)
>From gcc-bugs-return-639179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:24:49 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
Date: Mon, 01 Apr 2019 11:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89887
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not a bug.
>From gcc-bugs-return-639180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:24:58 2019
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89902] ICE: in extract_insn, at recog.c:2310: unrecognizable insn with -mavx512bitalg
Date: Mon, 01 Apr 2019 11:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89902
--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
If -mavx512f is used instead, gcc-7 does not ICE.
>From gcc-bugs-return-639181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:26:20 2019
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89903] New: [9 Regression] ICE: in convert_op, at config/i386/i386.c:2102 with -O2 -march=skylake
Date: Mon, 01 Apr 2019 11:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89903
Bug ID: 89903
Summary: [9 Regression] ICE: in convert_op, at
config/i386/i386.c:2102 with -O2 -march=skylake
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: i686-pc-linux-gnu
Created attachment 46066
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46066&action=edit
reduced testcase
This triggers also after PR89848 and PR89827 fix.
Compiler output:
$ i686-pc-linux-gnu-gcc -O2 -march=skylake testcase.c
during RTL pass: stv
testcase.c: In function 'foo':
testcase.c:10:1: internal compiler error: in convert_op, at
config/i386/i386.c:2102
10 | }
| ^
0x721607 dimode_scalar_chain::convert_op(rtx_def**, rtx_insn*)
/repo/gcc-trunk/gcc/config/i386/i386.c:2102
0x117cc0c dimode_scalar_chain::convert_insn(rtx_insn*)
/repo/gcc-trunk/gcc/config/i386/i386.c:2171
0x117d064 scalar_chain::convert()
/repo/gcc-trunk/gcc/config/i386/i386.c:2412
0x117d064 scalar_chain::convert()
/repo/gcc-trunk/gcc/config/i386/i386.c:2396
0x117db1c convert_scalars_to_vector
/repo/gcc-trunk/gcc/config/i386/i386.c:2478
0x117db1c execute
/repo/gcc-trunk/gcc/config/i386/i386.c:2596
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ i686-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-270053-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.1/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-sysroot=/usr/i686-pc-linux-gnu
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld
--with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-270053-checking-yes-rtl-df-extra-i686
Thread model: posix
gcc version 9.0.1 20190401 (experimental) (GCC)
>From gcc-bugs-return-639182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:29:06 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89888] When switch controlling expression is promoted from type narrower than int, GCC does not diagnose identical cases
Date: Mon, 01 Apr 2019 11:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89888
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid, diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. When making the promotion explicit (switch ((int)x))) we reject the
testcase:
> gcc t.c -Wall -S
t.c: In function ‘f’:
t.c:7:5: error: duplicate case value
case 0xffffffff: X=0xffffffff; break;
^
t.c:6:5: error: previously used here
case -1: X=-1; break;
^
and GCC 8 warns:
> gcc-8 t.c -Wall -S
t.c: In function ‘f’:
t.c:6:5: warning: case label value is less than minimum value for type
case -1: X=-1; break;
^~~~
t.c:7:5: warning: case label value is less than minimum value for type
case 0xffffffff: X=0xffffffff; break;
^~~~
t.c:6:15: warning: statement will never be executed [-Wswitch-unreachable]
case -1: X=-1; break;
~^~~
>From gcc-bugs-return-639183-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:34:47 2019
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Subject: [Bug middle-end/89889] worse code compared to clang with alloca()
Date: Mon, 01 Apr 2019 11:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89889
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
CC| |rguenth at gcc dot gnu.org
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note we also perform this optimization but only for smaller allocations,
see --param large-stack-frame (defaulted to 256) and when using
__builtin_alloca_with_align[_and_max] (not sure why not for plain alloca).
>From gcc-bugs-return-639184-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:36:24 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89901] carat of error not on the return type
Date: Mon, 01 Apr 2019 11:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89901
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #0)
> Could g++ indicate the carat on returned var?
It is doing.
The declaration of a variable 'const char** a' is not "the returned var".
The value returned by f() is best indicated by marking the expression f()
itself.
> C++ Godbolt trunk actual:
> 10 | const char **a = f();
> | ~^~
>
> C++ Expected:
> 10 | const char **a = f();
> | ~^~
For a start, highlighting just "con" is not very helpful.
Even if you highlighted the whole declarator (or just the type name) I don't
think this is a good idea. Semantically, the problem is that using f() as the
initializer for a 'const char**' is not the right type (and can't be converted
to the right type). The problem is not the type of 'a' it's the initializer.
Declaring a const char** is not a bug, but trying to initialize it from an
incompatible type is a bug.
You suggestion doesn't work in other cases. What would you highlight here?
const char** g(const char**);
const char** a = g(f());
Obviously you don't want to highlight the declaration of 'a' here because it's
fine. The problem is trying to initialize the parameter of 'g' with an
expression of the wrong type, namely f().
So we highlight f().
>From gcc-bugs-return-639186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:37:48 2019
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Subject: [Bug debug/89901] carat of error not on the return type
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #1)
> (In reply to Jonny Grant from comment #0)
> > Could g++ indicate the carat on returned var?
>
> It is doing.
>
> The declaration of a variable 'const char** a' is not "the returned var".
And it's also not "the return type" as the bug summary says.
The fact that return type of f() can't be used in that context is best
indicated by marking f() itself.
>From gcc-bugs-return-639185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:37:08 2019
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Subject: [Bug tree-optimization/46590] long compile time with -O2 and many loops
Date: Mon, 01 Apr 2019 11:37:00 -0000
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--- Comment #52 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Apr 1 11:36:25 2019
New Revision: 270055
URL: https://gcc.gnu.org/viewcvs?rev=270055&root=gcc&view=rev
Log:
2019-04-01 Richard Biener <rguenther@suse.de>
PR tree-optimization/46590
* domwalk.h (dom_walker::dom_walker): Consolidate constructors.
(dom_walker::m_reachability): Add in place of...
(dom_walker::m_skip_unreachable_blocks): ...this.
* domwalk.c (dom_walker::dom_walker): Consoliate constructors.
Move complex initialization ...
(dom_walker::walk): Here. Especially compute m_bb_to_rpo
lazily and initialize edge flags on each invocation.
(dom_walker::bb_reachable): Use m_reachability.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/domwalk.c
trunk/gcc/domwalk.h
>From gcc-bugs-return-639187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 11:41:19 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89901] carat of error not on the return type
Date: Mon, 01 Apr 2019 11:41:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|debug |c++
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This has nothing to do with DWARF debug info, so component=debug is wrong.
If you want to report it for both C and C++, you need to report two bugs (which
makes sense because the code that would need to change is different in the two
compilers anyway).
>From gcc-bugs-return-639188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 12:04:17 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89901] carat of error not on the return type
Date: Mon, 01 Apr 2019 12:04:00 -0000
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--- Comment #4 from Jonny Grant <jg at jguk dot org> ---
(In reply to Jonathan Wakely from comment #2)
> (In reply to Jonathan Wakely from comment #1)
> > (In reply to Jonny Grant from comment #0)
> > > Could g++ indicate the carat on returned var?
> >
> > It is doing.
> >
> > The declaration of a variable 'const char** a' is not "the returned var".
>
> And it's also not "the return type" as the bug summary says.
>
> The fact that return type of f() can't be used in that context is best
> indicated by marking f() itself.
I can see your point, so f() probably is the best place to indicate. I'll close
the ticket.
>From gcc-bugs-return-639189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 12:05:35 2019
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Subject: [Bug c++/89901] carat of error not on the return type
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Jonny Grant <jg at jguk dot org> changed:
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--- Comment #5 from Jonny Grant <jg at jguk dot org> ---
Invalid
>From gcc-bugs-return-639190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 12:05:52 2019
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
Date: Mon, 01 Apr 2019 12:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89255
--- Comment #3 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
[...]
> I posted this to gcc-patches in three parts, it would be good if you can test
> it on solaris before I commit.
Sure: I meant to do so once I saw it on gcc-patches. I've start just
with the symptoms to get an initial report out, before digging deeper.
I've bootstrapped with the patch on both x86_64-pc-linux-gnu and
i386-pc-solaris2.11 (Solaris 11.5 Beta, which includes dlpi_tls_modid,
so giving the best possible results), both 32 and 64-bit each.
* On Linux/x86_64, I see a few failures on i686:
Running target unix/-m32
FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos (test for
excess errors)
Excess errors:
/vol/gcc/bin/gld-2.32: warning: type and size of dynamic symbol
`fiber_switchContext' are not defined
FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos execution
test
WARNING: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution
test program timed out.
FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution test
WARNING: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
test program timed out.
FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
test
Those are PR d/89254, where the first had been fixed already in the old
setup. The std.parallelism one may be related to the fact that I'm
running the bootstrap on an 8-socket system with 10 cores each and
hyperthreading, i.e. 160 cores.
Those two are especially unfortunate since they hang indefinitely until
I manually kill them, thus always require manual intervention.
* On Solaris 11/x86, results are not too bad:
=== libphobos tests ===
Running target unix
FAIL: ../libdruntime/core/sync/mutex.d -fversion=Shared -shared-libphobos
execution test
This one existed before:
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../libdruntime/core/sync/mutex.d(381):
unittest failure
FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos (test for
excess errors)
Excess errors:
warning: Text relocation remains referenced
against symbol offset in file
fiber_switchContext 0x4505 /var/tmp//ccYMWL0c.o
fiber_switchContext 0x4b98 /var/tmp//ccYMWL0c.o
This code should be compiled with -fpic/-fPIC to avoid this.
FAIL: ../libdruntime/rt/minfo.d -fversion=Shared -shared-libphobos execution
test
No indication in the logs what happened.
FAIL: ../src/std/base64.d -fversion=Shared -shared-libphobos (test for excess
errors)
Excess errors:
ld: warning: symbol
'_D3std8internal7cstring23__T11tempCStringTaTAyaZ11tempCStringFAyaZ3Res6__initZ'
has differing sizes:
(file /var/tmp//ccN7CxXc.o value=0x18; file
/var/gcc/regression/trunk/11.5-gcc-gas/build/i386-pc-solaris2.11/libphobos/src/.libs/libgphobos.so
value=0x108);
/var/tmp//ccN7CxXc.o definition taken
There are several more testcases affected by this issue, all involving
one of
std.internal.cstring.tempCString!(char,
const(char)[]).tempCString(const(char)[]).Res
std.internal.cstring.tempCString!(char,
const(char)[]).tempCString(const(char)[]).Res
std.internal.cstring.tempCString!(char,
immutable(char)[]).tempCString(immutable(char)[]).Res
std.internal.cstring.tempCString!(char,
immutable(char)[]).tempCString(immutable(char)[]).Res
std.internal.cstring.tempCString!(char,
inout(char)[]).tempCString(inout(char)[]).Res
std.internal.cstring.tempCString!(char,
inout(char)[]).tempCString(inout(char)[]).Res
AFAIK there's no way to disable this warning.
FAIL: ../src/std/datetime/systime.d -fversion=Shared -shared-libphobos
execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/datetime/systime.d(732):
Value given: -1998-Jan-01 01:59:59
FAIL: ../src/std/datetime/timezone.d -fversion=Shared -shared-libphobos (test
for excess errors)
Excess errors:
/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/datetime/timezone.d:299:
error: static assert "The location of the UTC timezone file on this Posix
platform must be set."
UNRESOLVED: ../src/std/datetime/timezone.d -fversion=Shared -shared-libphobos
compilation failed to produce executable
FAIL: ../src/std/experimental/allocator/building_blocks/stats_collector.d
-fversion=Shared -shared-libphobos (test for excess errors)
FAIL: ../src/std/experimental/logger/core.d -fversion=Shared -shared-libphobos
(test for excess errors)
FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
-shared-libphobos (test for excess errors)
FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
-shared-libphobos execution test
FAIL: ../src/std/experimental/logger/multilogger.d -fversion=Shared
-shared-libphobos (test for excess errors)
FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/file.d(1040):
unittest failure
FAIL: ../src/std/format.d -fversion=Shared -shared-libphobos execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/format.d(4288):
unittest failure
FAIL: ../src/std/internal/cstring.d -fversion=Shared -shared-libphobos (test
for excess errors)
FAIL: ../src/std/math.d -fversion=Shared -shared-libphobos execution test
no hint in log
FAIL: ../src/std/mmfile.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos (test for excess
errors)
WARNING: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution
test program timed out.
FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution test
FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos (test for
excess errors)
FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/parallelism.d(3955):
unittest failure
FAIL: ../src/std/process.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/process.d -fversion=Shared -shared-libphobos execution test
/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/process.d:1027:
Warning: Couldn't find any way to check open files
core.exception.RangeError@/vol/gcc/src/hg/trunk/local/libphobos/src/std/file.d(3096):
Range violation
FAIL: ../src/std/range/package.d -fversion=Shared -shared-libphobos (test for
excess errors)
FAIL: ../src/std/socket.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos execution test
std.exception.ErrnoException@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/stdio.d(1028):
Could not seek in file `/tmp/deleteme.dmd.unittest.pid16148-детка.stdio.d.1037'
(Invalid argument)
FAIL: ../src/std/zip.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/zip.d -fversion=Shared -shared-libphobos execution test
core.exception.RangeError@/vol/gcc/src/hg/trunk/local/libphobos/src/std/file.d(3096):
Range violation
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
compilation is run 10 times in exactly the same way!?
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/libphobos.shared/load.d(147):
Assertion failure
preexisting
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/libphobos.shared/load_13414.d(20):
Assertion failure
preexisting
=== libphobos Summary for unix ===
# of expected passes 780
# of unexpected failures 69
# of unresolved testcases 1
Running target unix/-m64
FAIL: ../libdruntime/core/sync/mutex.d -fversion=Shared -shared-libphobos
execution test
FAIL: ../libdruntime/rt/minfo.d -fversion=Shared -shared-libphobos execution
test
FAIL: ../src/std/base64.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/datetime/systime.d -fversion=Shared -shared-libphobos
execution test
FAIL: ../src/std/datetime/timezone.d -fversion=Shared -shared-libphobos (test
for excess errors)
UNRESOLVED: ../src/std/datetime/timezone.d -fversion=Shared -shared-libphobos
compilation failed to produce executable
FAIL: ../src/std/experimental/allocator/building_blocks/stats_collector.d
-fversion=Shared -shared-libphobos (test for excess errors)
FAIL: ../src/std/experimental/logger/core.d -fversion=Shared -shared-libphobos
(test for excess errors)
FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
-shared-libphobos (test for excess errors)
FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
-shared-libphobos execution test
core.exception.RangeError@/vol/gcc/src/hg/trunk/local/libphobos/src/std/file.d(3096):
Range violation
FAIL: ../src/std/experimental/logger/multilogger.d -fversion=Shared
-shared-libphobos (test for excess errors)
FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos execution test
FAIL: ../src/std/format.d -fversion=Shared -shared-libphobos execution test
FAIL: ../src/std/internal/cstring.d -fversion=Shared -shared-libphobos (test
for excess errors)
FAIL: ../src/std/math.d -fversion=Shared -shared-libphobos execution test
FAIL: ../src/std/mmfile.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos (test for
excess errors)
FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
test
FAIL: ../src/std/process.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/process.d -fversion=Shared -shared-libphobos execution test
FAIL: ../src/std/range/package.d -fversion=Shared -shared-libphobos (test for
excess errors)
FAIL: ../src/std/socket.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/zip.d -fversion=Shared -shared-libphobos (test for excess
errors)
FAIL: ../src/std/zip.d -fversion=Shared -shared-libphobos execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/libphobos.shared/finalize.d(58):
Assertion failure
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
FAIL: libphobos.shared/linkD.c lib.so -ldl -pthread execution test
preexisting
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/libphobos.shared/load.d(147):
Assertion failure
preexisting
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/libphobos.shared/load_13414.d(20):
Assertion failure
preexisting
=== libphobos Summary for unix/-m64 ===
# of expected passes 783
# of unexpected failures 66
# of unresolved testcases 1
=== libphobos Summary ===
# of expected passes 1563
# of unexpected failures 135
# of unresolved testcases 2
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Subject: [Bug c/89886] the local array data will be laid in different section by different optimization level
Date: Mon, 01 Apr 2019 12:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89886
--- Comment #2 from vfdff <zhongyunde at huawei dot com> ---
it was worked in function varpool_node::finalize_decl (tree decl)
/* Set definition first before calling notice_global_symbol so that
it is available to notice_global_symbol. */
node->definition = true;
notice_global_symbol (decl);
if (TREE_THIS_VOLATILE (decl)
|| TREE_DESTRUCTIVE (decl)
|| DECL_PRESERVE_P (decl)
/* Traditionally we do not eliminate static variables when not
optimizing and when not doing toplevel reoder. */
|| node->no_reorder
|| ((!flag_toplevel_reorder
&& !DECL_COMDAT (node->decl)
&& !DECL_ARTIFICIAL (node->decl))))
node->force_output = true;
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Subject: [Bug lto/89896] -flto=4 is confused by presence of 'all.c' in a local directory. -flto=1 is not.
Date: Mon, 01 Apr 2019 12:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
It seems to be make looking for all.c via the LTRANS makefile and us
invoking make -f /tmp/ccfGbAMc.mk -j2 all
/tmp/cczwBPXD.ltrans0.ltrans.o:
@gcc-8 '-xlto' '-c' '-fno-openmp' '-fno-openacc' '-mtune=generic'
'-march=x86-64' '-fPIC' '-shared' '-fPIC' '-v' '-save-temps' '-mtune=generic'
'-march=x86-64' '-fltrans-output-list=/tmp/cczwBPXD.ltrans.out' '-fltrans' '-o'
'/tmp/cczwBPXD.ltrans0.ltrans.o' '/tmp/cczwBPXD.ltrans0.o'
all: \
/tmp/cczwBPXD.ltrans0.ltrans.o
which eventually leads to
4924 execve("/usr/bin/cc", ["cc", "all.c", "/tmp/cczwBPXD.ltrans0.ltrans.o",
"-o", "all"], [/* 107 vars */]) = 0
if you make all.c invalid C then you see
> gcc-8 -shared -fPIC -flto=2 -x c t.c
all.c:1:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ at end of
input
invalid
^~~~~~~
make: *** [all] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch candidate sent to:
https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00025.html
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Subject: [Bug lto/89896] -flto=4 is confused by presence of 'all.c' in a local directory. -flto=1 is not.
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Index: gcc/lto-wrapper.c
===================================================================
--- gcc/lto-wrapper.c (revision 270053)
+++ gcc/lto-wrapper.c (working copy)
@@ -1671,7 +1671,7 @@ cont:
int j = ltrans_priorities[i*2 + 1];
fprintf (mstream, " \\\n\t%s", output_names[j]);
}
- fprintf (mstream, "\n");
+ fprintf (mstream, "\n\t@:\n");
fclose (mstream);
if (!jobserver)
{
fixes this, adding an empty rule to the all target:
/tmp/ccZYd6M0.ltrans0.ltrans.o:
@gcc-8 '-xlto' '-c' '-fno-openmp' '-fno-openacc' '-mtune=generic'
'-march=x86-64' '-fPIC' '-shared' '-fPIC' '-B' '/abuild/rguenther/trunk2-g/gcc'
'-v' '-save-temps' '-mtune=generic' '-march=x86-64'
'-fltrans-output-list=/tmp/ccZYd6M0.ltrans.out' '-fltrans' '-o'
'/tmp/ccZYd6M0.ltrans0.ltrans.o' '/tmp/ccZYd6M0.ltrans0.o'
all: \
/tmp/ccZYd6M0.ltrans0.ltrans.o
@:
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Subject: [Bug target/89903] [9 Regression] ICE: in convert_op, at config/i386/i386.c:2102 with -O2 -march=skylake
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>From gcc-bugs-return-639197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 12:28:53 2019
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Subject: [Bug lto/89896] -flto=4 is confused by presence of 'all.c' in a local directory. -flto=1 is not.
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
$ gcc -shared -fPIC -flto=4 -o x.so isl.o -v
...
make -f /tmp/ccj2DsQs.mk -j4 all
^^^
...
/usr/local/bin/ld:
/usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/../lib64/crt1.o: in
function `_start':
(.text+0x24): undefined reference to `main'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: all] Error 1
lto-wrapper: fatal error: make returned 2 exit status
Since all.c matches the target "all", make tries to create "all".
>From gcc-bugs-return-639198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 12:32:07 2019
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Subject: [Bug lto/89896] -flto=4 is confused by presence of 'all.c' in a local directory. -flto=1 is not.
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--- Comment #6 from Andreas Schwab <schwab@linux-m68k.org> ---
Just make the target .PHONY.
>From gcc-bugs-return-639200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 13:11:33 2019
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Subject: [Bug ipa/89893] Segmentation fault always occurs when node app is generated by gcc-8-branch@268745
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
So I was able to track that to a single function:
diff --git a/src/node_platform.cc b/src/node_platform.cc
index fd8d045..ba344ba 100644
--- a/src/node_platform.cc
+++ b/src/node_platform.cc
@@ -346,6 +346,7 @@ void
PerIsolatePlatformData::DeleteFromScheduledTasks(DelayedTask* task) {
void PerIsolatePlatformData::RunForegroundTask(uv_timer_t* handle) {
DelayedTask* delayed = static_cast<DelayedTask*>(handle->data);
+ __builtin_printf ("run fore %p\n", delayed);
RunForegroundTask(std::move(delayed->task));
delayed->platform_data->DeleteFromScheduledTasks(delayed);
}
@@ -366,11 +367,13 @@ void NodePlatform::DrainBackgroundTasks(Isolate* isolate)
{
} while (per_isolate->FlushForegroundTasksInternal());
}
+#pragma GCC optimize ("O2")
bool PerIsolatePlatformData::FlushForegroundTasksInternal() {
bool did_work = false;
while (std::unique_ptr<DelayedTask> delayed =
foreground_delayed_tasks_.Pop()) {
+ __builtin_printf ("foreground_delayed_tasks_ called: %p\n",
delayed.get());
did_work = true;
uint64_t delay_millis =
static_cast<uint64_t>(delayed->timeout + 0.5) * 1000;
@@ -385,16 +388,20 @@ bool
PerIsolatePlatformData::FlushForegroundTasksInternal() {
[](DelayedTask* delayed) {
uv_close(reinterpret_cast<uv_handle_t*>(&delayed->timer),
[](uv_handle_t* handle) {
- delete static_cast<DelayedTask*>(handle->data);
+ DelayedTask *dt = static_cast<DelayedTask*>(handle->data);
+ __builtin_printf ("deleting %p\n", dt);
+ delete dt;
});
});
}
+
// Move all foreground tasks into a separate queue and flush that queue.
// This way tasks that are posted while flushing the queue will be run on
the
// next call of FlushForegroundTasksInternal.
std::queue<std::unique_ptr<Task>> tasks = foreground_tasks_.PopAll();
while (!tasks.empty()) {
std::unique_ptr<Task> task = std::move(tasks.front());
+ __builtin_printf ("foreground_tasks_ called: %p\n", task.get());
tasks.pop();
did_work = true;
RunForegroundTask(std::move(task));
Using that version I see:
...
RegExp : 7291
----
Score (version 9): 7291
duration 0 seconds
(node:19073) [DEP0016] DeprecationWarning: 'GLOBAL' is deprecated, use 'global'
foreground_delayed_tasks_ called: 0x1de23b0
foreground_tasks_ called: 0x1dd6ee8
foreground_tasks_ called: 0x1da3d88
while commenting out the '#pragma GCC optimize ("O2")' line one can see:
...
foreground_delayed_tasks_ called: 0x1d7e900
foreground_tasks_ called: 0x1ddc268
foreground_tasks_ called: 0x1dc53c8
run fore 0x1d7e900
run fore 0x1d7e900
So void PerIsolatePlatformData::RunForegroundTask(uv_timer_t* handle) is called
and delayed->task == NULL.
I'm not much familiar with unique_ptr, but first loop in
FlushForegroundTasksInternal calls
delayed.release() and there's quite a lot of casting as well.
Can you 康 çŠ investigate that?
>From gcc-bugs-return-639201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 13:36:33 2019
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Subject: [Bug ipa/89893] Segmentation fault always occurs when node app is generated by gcc-8-branch@268745
Date: Mon, 01 Apr 2019 13:36:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
One more debugging patch:
diff --git a/src/node_platform.cc b/src/node_platform.cc
index fd8d045..b19f541 100644
--- a/src/node_platform.cc
+++ b/src/node_platform.cc
@@ -342,10 +342,13 @@ void
PerIsolatePlatformData::DeleteFromScheduledTasks(DelayedTask* task) {
});
CHECK_NE(it, scheduled_delayed_tasks_.end());
scheduled_delayed_tasks_.erase(it);
+ __builtin_printf ("erasing: %p\n", task);
+ __builtin_printf ("lenght: %d\n", scheduled_delayed_tasks_.size());
}
void PerIsolatePlatformData::RunForegroundTask(uv_timer_t* handle) {
DelayedTask* delayed = static_cast<DelayedTask*>(handle->data);
+ __builtin_printf ("run fore %p\n", delayed);
RunForegroundTask(std::move(delayed->task));
delayed->platform_data->DeleteFromScheduledTasks(delayed);
}
@@ -366,11 +369,13 @@ void NodePlatform::DrainBackgroundTasks(Isolate* isolate)
{
} while (per_isolate->FlushForegroundTasksInternal());
}
+//#pragma GCC optimize ("O2")
bool PerIsolatePlatformData::FlushForegroundTasksInternal() {
bool did_work = false;
while (std::unique_ptr<DelayedTask> delayed =
foreground_delayed_tasks_.Pop()) {
+ __builtin_printf ("foreground_delayed_tasks_ called: %p\n",
delayed.get());
did_work = true;
uint64_t delay_millis =
static_cast<uint64_t>(delayed->timeout + 0.5) * 1000;
@@ -383,18 +388,23 @@ bool
PerIsolatePlatformData::FlushForegroundTasksInternal() {
scheduled_delayed_tasks_.emplace_back(delayed.release(),
[](DelayedTask* delayed) {
+ __builtin_printf ("lambda called\n");
uv_close(reinterpret_cast<uv_handle_t*>(&delayed->timer),
[](uv_handle_t* handle) {
- delete static_cast<DelayedTask*>(handle->data);
+ DelayedTask *dt = static_cast<DelayedTask*>(handle->data);
+ __builtin_printf ("deleting %p\n", dt);
+ delete dt;
});
});
}
+
// Move all foreground tasks into a separate queue and flush that queue.
// This way tasks that are posted while flushing the queue will be run on
the
// next call of FlushForegroundTasksInternal.
std::queue<std::unique_ptr<Task>> tasks = foreground_tasks_.PopAll();
while (!tasks.empty()) {
std::unique_ptr<Task> task = std::move(tasks.front());
+ __builtin_printf ("foreground_tasks_ called: %p\n", task.get());
tasks.pop();
did_work = true;
RunForegroundTask(std::move(task));
With that I see:
foreground_delayed_tasks_ called: 0x1d7d000
foreground_tasks_ called: 0x1ddce18
foreground_tasks_ called: 0x1dbd458
run fore 0x1d7d000
lambda called
erasing: 0x1d7d000
lenght: 0
run fore 0x1d7d000
Segmentation fault (core dumped)
>From gcc-bugs-return-639202-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 13:38:16 2019
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Subject: [Bug tree-optimization/46590] long compile time with -O2 and many loops
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--- Comment #53 from Richard Biener <rguenth at gcc dot gnu.org> ---
After both are fixed there's still non-linearity from loop-invariant, this
time in the DF RD problem.
Doubling the testcase goes from 9.1s to 25.5s, doubling again to 82.2s
with RD going from
df reaching defs : 0.67 ( 7%) 0.01 ( 3%) 0.72 ( 8%)
0 kB ( 0%)
to
df reaching defs : 3.79 ( 15%) 0.05 ( 7%) 3.79 ( 14%)
0 kB ( 0%)
and
df reaching defs : 11.47 ( 14%) 46.48 ( 88%) 58.41 ( 43%)
0 kB ( 0%)
>From gcc-bugs-return-639203-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 14:09:01 2019
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Subject: [Bug c/89886] the local array data will be laid in different section by different optimization level
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--- Comment #3 from vfdff <zhongyunde at huawei dot com> ---
A further thing, I think a 'static variables' will be put out in assemble, it
does not mean it is referenced ?
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1286) /* Return true when all
references to VNODE must be visible in ipa_ref_list.
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1287) i.e. if the variable is
not externally visible or not used in some magic
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1288) way (asm statement or
such).
0a10fd82 (froydnj 2011-02-11 15:16:46 +0000 1289) The magic uses are all
summarized in force_output flag. */
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1290)
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1291) static inline bool
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1292) varpool_all_refs_explicit_p
(struct varpool_node *vnode)
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1293) {
15ca8f90 (hubicka 2013-05-29 20:42:50 +0000 1294) return
(vnode->symbol.definition
7d0d0ce1 (hubicka 2012-04-14 10:24:59 +0000 1295) &&
!vnode->symbol.externally_visible
7d0d0ce1 (hubicka 2012-04-14 10:24:59 +0000 1296) &&
!vnode->symbol.used_from_other_partition
8efa224a (hubicka 2012-04-20 14:09:11 +0000 1297) &&
!vnode->symbol.force_output);
8dfbf71d (hubicka 2010-05-14 23:39:39 +0000 1298) }
>From gcc-bugs-return-639204-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 14:16:51 2019
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--- Comment #4 from vfdff <zhongyunde at huawei dot com> ---
Created attachment 46067
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46067&action=edit
the history of patch merged
>From gcc-bugs-return-639205-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 14:25:30 2019
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Subject: [Bug target/89903] [9 Regression] ICE: in convert_op, at config/i386/i386.c:2102 with -O2 -march=skylake
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-04-01
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Ever confirmed|0 |1
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 46068
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Proposed patch
>From gcc-bugs-return-639206-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 14:32:53 2019
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
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--- Comment #4 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #3)
>
> * On Linux/x86_64, I see a few failures on i686:
>
> Running target unix/-m32
> FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos (test
> for excess errors)
>
> Excess errors:
> /vol/gcc/bin/gld-2.32: warning: type and size of dynamic symbol
> `fiber_switchContext' are not defined
>
> FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos
> execution test
>
I saw that when checking -m32. The linker gives the hint, the assembler
implementation of fiber_switchContext has neither type or size, and a segfault
occurs calling the function at run-time. I added .type @function to resolve,
intended to push that later.
> WARNING: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution
> test program timed out.
> FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution test
> WARNING: ../src/std/parallelism.d -fversion=Shared -shared-libphobos
> execution test program timed out.
> FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
> test
>
> Those are PR d/89254, where the first had been fixed already in the old
> setup. The std.parallelism one may be related to the fact that I'm
> running the bootstrap on an 8-socket system with 10 cores each and
> hyperthreading, i.e. 160 cores.
>
> Those two are especially unfortunate since they hang indefinitely until
> I manually kill them, thus always require manual intervention.
>
Are they not killed after the timeout? I think it's 600 seconds by default.
> * On Solaris 11/x86, results are not too bad:
>
> === libphobos tests ===
>
>
> Running target unix
> FAIL: ../libdruntime/core/sync/mutex.d -fversion=Shared -shared-libphobos
> execution test
>
> This one existed before:
>
> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
> /libdruntime/core/sync/mutex.d(381): unittest failure
>
---
// Verify that the underlying implementation has been destroyed
// by checking that locking is not possible. This assumes
// that the underlying implementation is well behaved
// and makes the object non-lockable upon destruction.
// The Bionic and Musl C runtimes and DragonFly don't appear to do so, so skip
this test.
version (CRuntime_Bionic) {} else
version (CRuntime_Musl) {} else
version (DragonFlyBSD) {} else
assert(!mtx.tryLock_nothrow());
---
This is starting to look silly, but adding version (Solaris) to the growing
list may be required.
> FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos (test
> for excess errors)
>
> Excess errors:
> warning: Text relocation remains referenced
> against symbol offset in file
> fiber_switchContext 0x4505 /var/tmp//ccYMWL0c.o
> fiber_switchContext 0x4b98 /var/tmp//ccYMWL0c.o
>
> This code should be compiled with -fpic/-fPIC to avoid this.
>
threadasm.S is already be compiled with -fPIC for the pic_object. But not I
see for the non_pic_object unlike all *.d sources. But it doesn't look like
it's the static library test that's failing here.
> FAIL: ../libdruntime/rt/minfo.d -fversion=Shared -shared-libphobos execution
> test
>
> No indication in the logs what happened.
>
More alignment woes with ModuleInfo?
> FAIL: ../src/std/base64.d -fversion=Shared -shared-libphobos (test for
> excess errors)
>
> Excess errors:
> ld: warning: symbol
> '_D3std8internal7cstring23__T11tempCStringTaTAyaZ11tempCStringFAyaZ3Res6__ini
> tZ' has differing sizes:
> (file /var/tmp//ccN7CxXc.o value=0x18; file
> /var/gcc/regression/trunk/11.5-gcc-gas/build/i386-pc-solaris2.11/libphobos/
> src/.libs/libgphobos.so value=0x108);
> /var/tmp//ccN7CxXc.o definition taken
>
> There are several more testcases affected by this issue, all involving
> one of
>
> std.internal.cstring.tempCString!(char,
> const(char)[]).tempCString(const(char)[]).Res
> std.internal.cstring.tempCString!(char,
> const(char)[]).tempCString(const(char)[]).Res
> std.internal.cstring.tempCString!(char,
> immutable(char)[]).tempCString(immutable(char)[]).Res
> std.internal.cstring.tempCString!(char,
> immutable(char)[]).tempCString(immutable(char)[]).Res
> std.internal.cstring.tempCString!(char,
> inout(char)[]).tempCString(inout(char)[]).Res
> std.internal.cstring.tempCString!(char,
> inout(char)[]).tempCString(inout(char)[]).Res
>
> AFAIK there's no way to disable this warning.
>
---
version (unittest)
{
// smaller size to trigger reallocations
enum buffLength = 16 / To.sizeof;
}
else
{
// production size
enum buffLength = 256 / To.sizeof;
}
To[buffLength] _buff; // the 'small string optimization'
---
The library should not be doing that...
> FAIL: ../src/std/datetime/systime.d -fversion=Shared -shared-libphobos
> execution test
>
> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
> /src/std/datetime/systime.d(732): Value given: -1998-Jan-01 01:59:59
>
Timezone is incorrect?
> FAIL: ../src/std/datetime/timezone.d -fversion=Shared -shared-libphobos
> (test for excess errors)
>
> Excess errors:
> /vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/datetime/timezone.
> d:299: error: static assert "The location of the UTC timezone file on this
> Posix platform must be set."
>
That probably confirms it.
Looking quickly at upstream, I see this patch in master that looks to be
needing a backport.
https://github.com/dlang/phobos/commit/9f8482a5ac6bfc963e7f4c4814f2982f1500e501
> UNRESOLVED: ../src/std/datetime/timezone.d -fversion=Shared
> -shared-libphobos compilation failed to produce executable
> FAIL: ../src/std/experimental/allocator/building_blocks/stats_collector.d
> -fversion=Shared -shared-libphobos (test for excess errors)
> FAIL: ../src/std/experimental/logger/core.d -fversion=Shared
> -shared-libphobos (test for excess errors)
> FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
> -shared-libphobos (test for excess errors)
> FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
> -shared-libphobos execution test
> FAIL: ../src/std/experimental/logger/multilogger.d -fversion=Shared
> -shared-libphobos (test for excess errors)
> FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos (test for excess
> errors)
> FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos execution test
>
> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
> /src/std/file.d(1040): unittest failure
>
Also related to clock/timezone problems?
> FAIL: ../src/std/format.d -fversion=Shared -shared-libphobos execution test
>
> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
> /src/std/format.d(4288): unittest failure
>
---
formattedWrite(stream, "%a %A", 1.32, 6.78f);
assert(stream.data == "0x1.51eb851eb851fp+0 0X1.B1EB86P+2");
---
It should use snprintf() under the hood if I recall correctly.
> FAIL: ../src/std/mmfile.d -fversion=Shared -shared-libphobos (test for
> excess errors)
> FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos (test for
> excess errors)
> WARNING: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution
> test program timed out.
> FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution test
> FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos (test for
> excess errors)
> FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
> test
>
> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
> /src/std/parallelism.d(3955): unittest failure
>
---
poolInstance.priority = Thread.PRIORITY_MAX;
assert(poolInstance.priority == Thread.PRIORITY_MAX);
poolInstance.priority = Thread.PRIORITY_MIN;
assert(poolInstance.priority == Thread.PRIORITY_MIN);
---
The first passes, but the second doesn't?
> FAIL: ../src/std/process.d -fversion=Shared -shared-libphobos (test for
> excess errors)
> FAIL: ../src/std/process.d -fversion=Shared -shared-libphobos execution test
>
> /vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/process.d:1027:
> Warning: Couldn't find any way to check open files
> core.exception.RangeError@/vol/gcc/src/hg/trunk/local/libphobos/src/std/file.
> d(3096): Range violation
>
---
immutable len = core.stdc.string.strlen(fd.d_name.ptr);
_name = buildPath(path, fd.d_name[0 .. len]);
---
Definition of `struct dirent` on Solaris:
---
struct dirent
{
ino_t d_ino;
off_t d_off;
ushort d_reclen;
char[1] d_name = 0;
}
---
So the only accessible parts of the array are [0 .. 1]. Apparently there is
nothing wrong with the definition, as far as I can tell by looking up, Solaris
has a dynamically allocated size for d_name, so a special case is required to
bypass bounds checking.
> FAIL: ../src/std/range/package.d -fversion=Shared -shared-libphobos (test
> for excess errors)
> FAIL: ../src/std/socket.d -fversion=Shared -shared-libphobos (test for
> excess errors)
> FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos (test for excess
> errors)
> FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos execution test
>
> std.exception.ErrnoException@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/
> ../src/std/stdio.d(1028): Could not seek in file
> `/tmp/deleteme.dmd.unittest.pid16148-детка.stdio.d.1037' (Invalid argument)
>
There's no backtrace, so don't know which unittest it came from, what are the
reasons why fseeko may return invalid argument on Solaris? Specifically
anything that differs from other implementations.
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
>
> compilation is run 10 times in exactly the same way!?
>
Maybe something is missing in the part copied from GCC_RUNTEST_PARALLELIZE. I
did see problems copying gcc_parallel_test_run_p and other procedures locally
to the libphobos testsuite, it looked like it replaced itself incorrectly.
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Subject: [Bug ipa/89893] Segmentation fault always occurs when node app is generated by gcc-8-branch@268745
Date: Mon, 01 Apr 2019 14:36:00 -0000
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--- Comment #7 from 康 çŠ <kangshan0910 at hotmail dot com> ---
Thanks Martin Liška for your quick response. I'm sorry I'm not familiar with
unique_ptr neither. Do you mean it is caused by the "Node" source logic itself?
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Subject: [Bug d/88462] All D execution tests FAIL on Solaris/SPARC
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--- Comment #14 from ibuclaw at gcc dot gnu.org ---
Author: ibuclaw
Date: Mon Apr 1 14:44:04 2019
New Revision: 270057
URL: https://gcc.gnu.org/viewcvs?rev=270057&root=gcc&view=rev
Log:
PR d/88462
libphobos: Fix abort in pthread_mutex_init on Solaris.
Merges upstream druntime d57fa1ff.
Reviewed-on: https://github.com/dlang/druntime/pull/2534
Modified:
trunk/libphobos/libdruntime/MERGE
trunk/libphobos/libdruntime/core/internal/traits.d
trunk/libphobos/libdruntime/core/thread.d
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Subject: [Bug d/88462] All D execution tests FAIL on Solaris/SPARC
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Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #15 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Commits r270043 and r270057 deals with the immediate problems here, other
problems raised in pr89255 I think should be handled on a per-case basis to
keep track off each fail test easier.
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
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--- Comment #5 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #4 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
> (In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #3)
>>
>> * On Linux/x86_64, I see a few failures on i686:
>> WARNING: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution
>> test program timed out.
>> FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution test
>> WARNING: ../src/std/parallelism.d -fversion=Shared -shared-libphobos
>> execution test program timed out.
>> FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
>> test
>>
>> Those are PR d/89254, where the first had been fixed already in the old
>> setup. The std.parallelism one may be related to the fact that I'm
>> running the bootstrap on an 8-socket system with 10 cores each and
>> hyperthreading, i.e. 160 cores.
>>
>> Those two are especially unfortunate since they hang indefinitely until
>> I manually kill them, thus always require manual intervention.
>>
>
> Are they not killed after the timeout? I think it's 600 seconds by default.
Unfortunately not: they continue until I kill them manually. This is
with expect 5.45.4 bundled with Fedora 29 and self-built DejaGnu 1.6.1.
>> * On Solaris 11/x86, results are not too bad:
>>
>> === libphobos tests ===
>>
>>
>> Running target unix
>> FAIL: ../libdruntime/core/sync/mutex.d -fversion=Shared -shared-libphobos
>> execution test
>>
>> This one existed before:
>>
>> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
>> /libdruntime/core/sync/mutex.d(381): unittest failure
>>
>
> ---
> // Verify that the underlying implementation has been destroyed
> // by checking that locking is not possible. This assumes
> // that the underlying implementation is well behaved
> // and makes the object non-lockable upon destruction.
> // The Bionic and Musl C runtimes and DragonFly don't appear to do so, so skip
> this test.
> version (CRuntime_Bionic) {} else
> version (CRuntime_Musl) {} else
> version (DragonFlyBSD) {} else
> assert(!mtx.tryLock_nothrow());
> ---
>
> This is starting to look silly, but adding version (Solaris) to the growing
> list may be required.
Ok, I'll check, thanks.
>> FAIL: ../libdruntime/core/thread.d -fversion=Shared -shared-libphobos (test
>> for excess errors)
>>
>> Excess errors:
>> warning: Text relocation remains referenced
>> against symbol offset in file
>> fiber_switchContext 0x4505 /var/tmp//ccYMWL0c.o
>> fiber_switchContext 0x4b98 /var/tmp//ccYMWL0c.o
>>
>> This code should be compiled with -fpic/-fPIC to avoid this.
>>
>
> threadasm.S is already be compiled with -fPIC for the pic_object. But not I
> see for the non_pic_object unlike all *.d sources. But it doesn't look like
> it's the static library test that's failing here.
Right: if I manually repeat the compilation with -save-temps added, I
get
warning: Text relocation remains referenced
against symbol offset in file
fiber_switchContext 0x4505 thread.o
fiber_switchContext 0x4b98 thread.o
Somehow ld seems to think it's creating a shared object (or PIE), but I
don't yet see why...
>> FAIL: ../src/std/base64.d -fversion=Shared -shared-libphobos (test for
>> excess errors)
>>
>> Excess errors:
>> ld: warning: symbol
>> '_D3std8internal7cstring23__T11tempCStringTaTAyaZ11tempCStringFAyaZ3Res6__ini
>> tZ' has differing sizes:
>> (file /var/tmp//ccN7CxXc.o value=0x18; file
>> /var/gcc/regression/trunk/11.5-gcc-gas/build/i386-pc-solaris2.11/libphobos/
>> src/.libs/libgphobos.so value=0x108);
>> /var/tmp//ccN7CxXc.o definition taken
>>
>> There are several more testcases affected by this issue, all involving
>> one of
>>
>> std.internal.cstring.tempCString!(char,
>> const(char)[]).tempCString(const(char)[]).Res
>> std.internal.cstring.tempCString!(char,
>> const(char)[]).tempCString(const(char)[]).Res
>> std.internal.cstring.tempCString!(char,
>> immutable(char)[]).tempCString(immutable(char)[]).Res
>> std.internal.cstring.tempCString!(char,
>> immutable(char)[]).tempCString(immutable(char)[]).Res
>> std.internal.cstring.tempCString!(char,
>> inout(char)[]).tempCString(inout(char)[]).Res
>> std.internal.cstring.tempCString!(char,
>> inout(char)[]).tempCString(inout(char)[]).Res
>>
>> AFAIK there's no way to disable this warning.
>>
>
> ---
> version (unittest)
> {
> // smaller size to trigger reallocations
> enum buffLength = 16 / To.sizeof;
> }
> else
> {
> // production size
> enum buffLength = 256 / To.sizeof;
> }
>
> To[buffLength] _buff; // the 'small string optimization'
> ---
>
> The library should not be doing that...
Indeed. gld accepts this silently, it seems...
>> FAIL: ../src/std/datetime/systime.d -fversion=Shared -shared-libphobos
>> execution test
>>
>> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
>> /src/std/datetime/systime.d(732): Value given: -1998-Jan-01 01:59:59
>>
>
> Timezone is incorrect?
LC_TIME is set to the empty string form some reason: weird!
>> FAIL: ../src/std/datetime/timezone.d -fversion=Shared -shared-libphobos
>> (test for excess errors)
>>
>> Excess errors:
>> /vol/gcc/src/hg/trunk/local/libphobos/testsuite/../src/std/datetime/timezone.
>> d:299: error: static assert "The location of the UTC timezone file on this
>> Posix platform must be set."
>>
>
> That probably confirms it.
>
> Looking quickly at upstream, I see this patch in master that looks to be
> needing a backport.
>
> https://github.com/dlang/phobos/commit/9f8482a5ac6bfc963e7f4c4814f2982f1500e501
Looks like it, yes.
>> UNRESOLVED: ../src/std/datetime/timezone.d -fversion=Shared
>> -shared-libphobos compilation failed to produce executable
>> FAIL: ../src/std/experimental/allocator/building_blocks/stats_collector.d
>> -fversion=Shared -shared-libphobos (test for excess errors)
>> FAIL: ../src/std/experimental/logger/core.d -fversion=Shared
>> -shared-libphobos (test for excess errors)
>> FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
>> -shared-libphobos (test for excess errors)
>> FAIL: ../src/std/experimental/logger/filelogger.d -fversion=Shared
>> -shared-libphobos execution test
>> FAIL: ../src/std/experimental/logger/multilogger.d -fversion=Shared
>> -shared-libphobos (test for excess errors)
>> FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos (test for excess
>> errors)
>> FAIL: ../src/std/file.d -fversion=Shared -shared-libphobos execution test
>>
>> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
>> /src/std/file.d(1040): unittest failure
>>
>
> Also related to clock/timezone problems?
I'll retry tonight with LC_TIME unset and probably the patch above.
>> FAIL: ../src/std/mmfile.d -fversion=Shared -shared-libphobos (test for
>> excess errors)
>> FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos (test for
>> excess errors)
>> WARNING: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution
>> test program timed out.
>> FAIL: ../src/std/net/curl.d -fversion=Shared -shared-libphobos execution test
>> FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos (test for
>> excess errors)
>> FAIL: ../src/std/parallelism.d -fversion=Shared -shared-libphobos execution
>> test
>>
>> core.exception.AssertError@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/..
>> /src/std/parallelism.d(3955): unittest failure
>>
>
> ---
> poolInstance.priority = Thread.PRIORITY_MAX;
> assert(poolInstance.priority == Thread.PRIORITY_MAX);
>
> poolInstance.priority = Thread.PRIORITY_MIN;
> assert(poolInstance.priority == Thread.PRIORITY_MIN);
> ---
>
> The first passes, but the second doesn't?
I'll check the code in the Solaris version of
core.thread.loadPriorities: maybe something is amiss there.
>> FAIL: ../src/std/range/package.d -fversion=Shared -shared-libphobos (test
>> for excess errors)
>> FAIL: ../src/std/socket.d -fversion=Shared -shared-libphobos (test for
>> excess errors)
>> FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos (test for excess
>> errors)
>> FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos execution test
>>
>> std.exception.ErrnoException@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/
>> ../src/std/stdio.d(1028): Could not seek in file
>> `/tmp/deleteme.dmd.unittest.pid16148-детка.stdio.d.1037' (Invalid argument)
>>
>
> There's no backtrace, so don't know which unittest it came from, what are the
> reasons why fseeko may return invalid argument on Solaris? Specifically
> anything that differs from other implementations.
Off the top of my head, could be related to largefile handling (or lack
thereof).
>From gcc-bugs-return-639211-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 15:09:01 2019
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89904] New: [9 regression] ICE in gfortran starting with r270045
Date: Mon, 01 Apr 2019 15:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89904
Bug ID: 89904
Summary: [9 regression] ICE in gfortran starting with r270045
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
Executing on host:
/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../gfortran
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../
-B/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O -Wall -S -o pr85797.s (timeout = 300)
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../gfortran
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../
-B/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O -Wall -S -o pr85797.s
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:7:16: Warning:
Non-RECURSIVE procedure 'a' at (1) is possibly calling itself recursively.
Declare it RECURSIVE or use '-frecursive'
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:26:26: Warning:
Return value 'z' of function 'f' declared at (1) not set [-Wreturn-type]
during GIMPLE pass: ccp
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:22:0: internal
compiler error: in fold_convert_loc, at fold-const.c:2552
0x106a8c07 fold_convert_loc(unsigned int, tree_node*, tree_node*)
/home/seurer/gcc/gcc-test/gcc/fold-const.c:2552
0x10e9e59b build_zero_cst(tree_node*)
/home/seurer/gcc/gcc-test/gcc/tree.c:2382
0x10c58fbb evaluate_stmt
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:1997
0x10c5a723 visit_assignment
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2352
0x10c5a9bb ccp_propagate::visit_stmt(gimple*, edge_def**, tree_node**)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2430
0x10d130f3 ssa_propagation_engine::simulate_stmt(gimple*)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:230
0x10d1358b ssa_propagation_engine::simulate_block(basic_block_def*)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:337
0x10d15663 ssa_propagation_engine::ssa_propagate()
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:802
0x10c5365f do_ssa_ccp
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2471
0x10c5365f execute
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2515
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
compiler exited with status 1
FAIL: gfortran.dg/pr85797.f90 -O (internal compiler error)
PASS: gfortran.dg/pr85797.f90 -O (test for warnings, line 7)
PASS: gfortran.dg/pr85797.f90 -O (test for warnings, line 26)
FAIL: gfortran.dg/pr85797.f90 -O (test for excess errors)
Excess errors:
during GIMPLE pass: ccp
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:22:0: internal
compiler error: in fold_convert_loc, at fold-const.c:2552
0x106a8c07 fold_convert_loc(unsigned int, tree_node*, tree_node*)
/home/seurer/gcc/gcc-test/gcc/fold-const.c:2552
0x10e9e59b build_zero_cst(tree_node*)
/home/seurer/gcc/gcc-test/gcc/tree.c:2382
0x10c58fbb evaluate_stmt
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:1997
0x10c5a723 visit_assignment
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2352
0x10c5a9bb ccp_propagate::visit_stmt(gimple*, edge_def**, tree_node**)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2430
0x10d130f3 ssa_propagation_engine::simulate_stmt(gimple*)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:230
0x10d1358b ssa_propagation_engine::simulate_block(basic_block_def*)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:337
0x10d15663 ssa_propagation_engine::ssa_propagate()
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:802
0x10c5365f do_ssa_ccp
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2471
0x10c5365f execute
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2515
testcase /home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/dg.exp completed
in 1 seconds
=== gfortran Summary ===
# of expected passes 2
# of unexpected failures 2
>From gcc-bugs-return-639212-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 15:10:40 2019
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Subject: [Bug c++/89901] carat of error not on the return type
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |msebor at gcc dot gnu.org
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
The message could be improved by adding a note similar to the one GCC prints
for the same incompatibility in function argument initialization. In the test
case below, the note in the second error makes it clear exactly where the
incompatibility is but it hard not to misread the first error as suggesting the
problem is also in the argument initialization. In both cases, the placement
of the caret on the opening parenthesis (rather than on the first letter of the
function name) doesn't seem like the most fortunate choice, especially with the
char** being right under it.
$ gcc -S -Wall z.C
char **f (const char**);
void g (const char **s)
{
const char **a = f (s);
g (f (s));
(void)&a;
}
z.C: In function ‘void g(const char**)’:
z.C:5:22: error: invalid conversion from ‘char**’ to ‘const char**’
[-fpermissive]
5 | const char **a = f (s);
| ~~^~~
| |
| char**
z.C:6:8: error: invalid conversion from ‘char**’ to ‘const char**’
[-fpermissive]
6 | g (f (s));
| ~~^~~
| |
| char**
z.C:3:22: note: initializing argument 1 of ‘void g(const char**)’
3 | void g (const char **s)
| ~~~~~~~~~~~~~^
>From gcc-bugs-return-639213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 15:12:00 2019
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Subject: [Bug c/89887] the local array data will be laid in different section by different optimization level
Date: Mon, 01 Apr 2019 15:11:00 -0000
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--- Comment #8 from vfdff <zhongyunde at huawei dot com> ---
an static variable out put in assemble is decided by an special option
flag_toplevel_reorder ?
/* Traditionally we do not eliminate static variables when not
optimizing and when not doing toplevel reoder. */
|| node->no_reorder
|| ((!flag_toplevel_reorder
&& !DECL_COMDAT (node->decl)
&& !DECL_ARTIFICIAL (node->decl))))
node->force_output = true;
>From gcc-bugs-return-639214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 15:17:06 2019
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug d/88462] All D execution tests FAIL on Solaris/SPARC
Date: Mon, 01 Apr 2019 15:17:00 -0000
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--- Comment #16 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #15 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
> Commits r270043 and r270057 deals with the immediate problems here, other
> problems raised in pr89255 I think should be handled on a per-case basis to
> keep track off each fail test easier.
Absolutely. I had a workaround for the second commit in my tree already
and tried a sparc-sun-solaris2.11 bootstrap with the first last night.
The execution tests get along far further now, but many (all of them?)
are spinning in repeated calls to nanosleep:
nanosleep(0xFFBFE140, 0xFFBFE148) = 0
tmout: 0.001000000 sec
resid: 0.000000000 sec
pstack shows
6706: gdc94/link11069a.exe
fe78fe58 nanosleep (ffbfe140, ffbfe148)
fefac72c core.thread.Thread.sleep(core.time.Duration) (ffbfe1c0, 1, ffbfe348,
0, ffbfe148, ffbfe140) + bc
fefa26b0 core.internal.spinlock.SpinLock.lock() shared (ff0582c0, 1, ffbfe1c0,
299163c, 0, 4) + 78
ff01270c ???????? (23ad0, ffbfe2a0, ffbfe2a4, ffbfe2ac, ffbfe2a8, ff0582c0) +
50
ff00e07c
_DT8_D2gc4impl12conservative2gc14ConservativeGC6mallocMFNbkkxC8TypeInfoZPv (0,
28, 0, ff052208, 0, 0) + 3c
ff019560 gc_malloc (28, 0, ff052208, ff06b790, fef7fc7c, ffbfe398) + 30
fefd0fd0 _d_newclass (ff052208, fef1c964, ffbfe418, ff06b790, fef7fc34,
ff052208) + 10c
fefa0818 onAssertErrorMsg (ffbfe4a0, 37c, ffbfe498, ff06b790, fef80444,
ff1de314) + 68
fefa0fa4 _d_assert_msg (ffbfe518, ffbfe510, 37c, 8, fef81410, ff1de314) + 2c
fefae600 core.thread.suspend(core.thread.Thread) (0, ff05ac00, 4c4b3f,
ff05abd0, ffbfe540, 1) + 374
ff00cc00 gc.impl.conservative.gc.Gcx.fullcollect(bool) (24118, 1, 24158, 8,
ff05a38c, 24118) + 4c
ff00d0ec gc.impl.conservative.gc.ConservativeGC.fullCollectNoStack() (23ad0,
fef18f14, fefd09fc, ff06b790, fef80b04, 0) + 60
ff002e74 _DT8_D2gc4impl12conservative2gc14ConservativeGC14collectNoStackMFNbZv
(23ad8, 0, fe7e6a80, 0, 0, ffffffff) + 18
ff019380 gc_term (ff05ae1c, 1, ff05abe0, ff05abc4, ff05abd0, 0) + 28
fefd09fc rt_term (1, ffbfe828, 4, ffbfeb90, ffbfe7a8, ffbfe95c) + 68
fefd0ab4 rt.dmain2._d_run_main(int, char**, extern(C) int(char[][])
function).runAll() (ffbfe95c, 6e6b, 14, ffbfe878, 0, ffbfeb7e) + 28
(dmain2.d:489)
fefd05d0 rt.dmain2._d_run_main(int, char**, extern(C) int(char[][])
function).tryExec(scope void() delegate) (ffbfe95c, ffbfe930, ffbfe928, 4, 14,
ffbfe95c) + 1c (dmain2.d:460)
fefd07e8 _d_run_main (1, ffbfe914, 1, ffbfe920, 14, 1) + 1c4
00012844 main (1, ffbfea34, ffbfea3c, 0, 0, 12ed0) + 1c
00012634 _start (0, 0, 0, 0, 0, 0) + 5c
Once I'd recompiled libphobos at -g3 -O0, the problem vanished, though.
I'll look closer and report my findings separately.
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Subject: [Bug rtl-optimization/87273] [8/9 Regression] ICE in merge_fences, at sel-sched-ir.c:708
Date: Mon, 01 Apr 2019 15:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87273
--- Comment #6 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Mon Apr 1 15:20:13 2019
New Revision: 270059
URL: https://gcc.gnu.org/viewcvs?rev=270059&root=gcc&view=rev
Log:
sel-sched: remove assert in merge_fences (PR 87273)
2019-04-01 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/87273
* sel-sched-ir.c (merge_fences): Remove assert.
* gcc.dg/pr87273.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr87273.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sel-sched-ir.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/87273] [8 Regression] ICE in merge_fences, at sel-sched-ir.c:708
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87273
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|merge_fences, at |merge_fences, at
|sel-sched-ir.c:708 |sel-sched-ir.c:708
--- Comment #7 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-639217-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 16:06:05 2019
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Subject: [Bug debug/89905] New: gcc generates wrong debug information at -Og
Date: Mon, 01 Apr 2019 16:06:00 -0000
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Bug ID: 89905
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It affects gcc-8 to trunk. Gcc-7 works fine.
Bisection points to r247596.
The correct value is "i=830100328". However, with "-Og", gdb outputs
"i=830100327".
$ gcc-trunk -v
gcc version 9.0.1 20190401 (experimental) [trunk revision 270054] (GCC)
$ gdb -v
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
#correct output#
$ gcc-trunk -g abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x40057a: file abc.c, line 22.
Breakpoint 1, i () at abc.c:22
22 optimize_me_not();
$1 = 830100328
#incorrect output#
$ gcc-trunk -g abc.c outer.c -Og
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x4004f3: file abc.c, line 22.
Breakpoint 1, i () at abc.c:22
22 optimize_me_not();
$1 = 830100327
$ cat abc.c
char c, d = 22, f;
short e, g;
int h;
char(a)() {}
char(b)() { return 0; }
void i() {
char j;
for (; h < 1;) {
short k[9] = {1, 1, 1, 1, 1, 1, 1, 1, 1};
int l, i = 830100327;
short m[3] = {0, 0, 0};
for (; h < 7; h++)
for (; d >= 33;) {
++k[8];
f = (c || a()) && g;
}
i++;
j = b() || m[2];
l = 0;
for (; l <= 6; l = d)
e = k[8];
optimize_me_not();
}
}
int main() { i(); }
$ cat cmds
b 22
r
p i
kill
q
$ cat outer.c
void optimize_me_not() {}
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
Date: Mon, 01 Apr 2019 16:18:00 -0000
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--- Comment #6 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Created attachment 46069
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46069&action=edit
Use dg-runtest instead of dg-test
(In reply to Iain Buclaw from comment #4)
> (In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #3)
> >
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> > FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
> >
> > compilation is run 10 times in exactly the same way!?
> >
>
> Maybe something is missing in the part copied from GCC_RUNTEST_PARALLELIZE.
> I did see problems copying gcc_parallel_test_run_p and other procedures
> locally to the libphobos testsuite, it looked like it replaced itself
> incorrectly.
Ahh, we're calling dg-test directly, instead of dg-runtest, so there's no
protection against parallelized tests.
Looking at dejagnu/dg.exp, there's no reason to use dg-test, so switching all
over.
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Subject: [Bug rtl-optimization/89865] [9 Regression] FAIL: gcc.target/i386/pr49095.c scan-assembler-times \\\\), % 45
Date: Mon, 01 Apr 2019 16:19:00 -0000
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--- Comment #22 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Mon Apr 1 16:18:30 2019
New Revision: 270060
URL: https://gcc.gnu.org/viewcvs?rev=270060&root=gcc&view=rev
Log:
2019-04-01 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/89865
* ira-costs.c (process_bb_node_for_hard_reg_moves): Skip hard
register if it is a part of small class.
Added:
trunk/gcc/ira-costs.c
- copied, changed from r268424, trunk/gcc/ira-costs.c
Modified:
trunk/gcc/ChangeLog
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
Date: Mon, 01 Apr 2019 16:20:00 -0000
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--- Comment #7 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Ignoring the test results, multilib handling seems to be working well for you
then?
I can create individual PRs for each failure later.
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From: "romain.geissler at amadeus dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89906] New: [8 Regression] template template parameter redeclared
Date: Mon, 01 Apr 2019 16:25:00 -0000
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Bug ID: 89906
Summary: [8 Regression] template template parameter redeclared
Product: gcc
Version: 8.3.1
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Hi,
The following snippet started to be rejected between:
g++ (GCC) 8.3.1 20190225
and
g++ (GCC) 8.3.1 20190331
, only when using -std=gnu++17). Clang 8 happily compiles it.
> cat reproducer.cpp
template <template <typename T> class Tmpl> struct TemplateSel {};
template <template <typename T> class T1> struct Templates1
{
typedef TemplateSel<T1> Head;
};
template <template <typename T1, typename T2, typename T3> class F> struct
quote3;
template <template <typename P1, typename P2, typename P3> class F> struct
quote3 {};
> /opt/1A/toolchain/x86_64-2.6.32-v4.0.55/bin/g++ -std=gnu++17 -o reproducer -c reproducer.cpp
reproducer.cpp:8:66: error: template parameter ‘template<class T1, class T2,
class T3> class F’
template <template <typename T1, typename T2, typename T3> class F> struct
quote3;
^
reproducer.cpp:10:76: error: redeclared here as ‘template<class P1, class P2,
class P3> class F’
template <template <typename P1, typename P2, typename P3> class F> struct
quote3 {};
^~~~~~
Cheers,
Romain
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Subject: [Bug rtl-optimization/86928] ICE in compute_live, at sel-sched.c:3097
Date: Mon, 01 Apr 2019 16:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86928
--- Comment #4 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Mon Apr 1 16:32:24 2019
New Revision: 270061
URL: https://gcc.gnu.org/viewcvs?rev=270061&root=gcc&view=rev
Log:
sel-sched: update liveness in redirect_edge_and_branch hooks (PR 86928)
2019-04-01 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/86928
* sel-sched-ir.c (sel_redirect_edge_and_branch_force): Invoke
compute_live if necessary.
(sel_redirect_edge_and_branch): Likewise.
* gcc.dg/pr86928.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr86928.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sel-sched-ir.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/85099] [meta-bug] selective scheduling issues
Date: Mon, 01 Apr 2019 16:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85099
Bug 85099 depends on bug 86928, which changed state.
Bug 86928 Summary: ICE in compute_live, at sel-sched.c:3097
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86928
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug rtl-optimization/86928] ICE in compute_live, at sel-sched.c:3097
Date: Mon, 01 Apr 2019 16:34:00 -0000
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
I didn't have any better ideas, so fixed via comment #2.
>From gcc-bugs-return-639225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 16:49:44 2019
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Subject: [Bug testsuite/89907] New: Incorrect check_avx2_available
Date: Mon, 01 Apr 2019 16:49:00 -0000
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Bug ID: 89907
Summary: Incorrect check_avx2_available
Product: gcc
Version: 9.0
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target-supports.exp has
# Return true if we are compiling for AVX target.
proc check_avx_available { } {
if { [check_no_compiler_messages avx_available assembly {
#ifndef __AVX__
#error unsupported
#endif
} ""] } {
return 1;
}
return 0;
}
# Return true if we are compiling for AVX2 target.
proc check_avx2_available { } {
if { [check_no_compiler_messages avx_available assembly {
^^^^^ It should be "avx2_available".
#ifndef __AVX2__
#error unsupported
#endif
} ""] } {
return 1;
}
return 0;
}
When check_avx_available is called before check_avx2_available,
check_avx2_available will get the wrong result on AVX machines.
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Subject: [Bug fortran/58769] RFC: Creating SIMD variant for Fortran's ELEMENTAL functions
Date: Mon, 01 Apr 2019 17:01:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> WTF? No activity for over two years.
No activity for over three more years, closing as WONTFIX.
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Subject: [Bug c/89685] [9 Regression] ICE on attribute copy with a compound expression
Date: Mon, 01 Apr 2019 17:04:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed in 270062.
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Subject: [Bug c/89685] [9 Regression] ICE on attribute copy with a compound expression
Date: Mon, 01 Apr 2019 17:04:00 -0000
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Apr 1 17:04:10 2019
New Revision: 270062
URL: https://gcc.gnu.org/viewcvs?rev=270062&root=gcc&view=rev
Log:
PR c/89685 - ICE on attribute copy with a compound expression
gcc/c-family/ChangeLog:
PR c/89685
* c-attribs.c (handle_copy_attribute): Handle references and
non-constant expressions.
gcc/testsuite/ChangeLog:
PR c/89685
* gcc.dg/attr-copy-8.c: New test.
* g++.dg/ext/attr-copy-2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ext/attr-copy-2.C
trunk/gcc/testsuite/gcc.dg/attr-copy-8.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-attribs.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/62207] [7/8/9 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'overload' in tsubst_copy, at cp/pt.c
Date: Mon, 01 Apr 2019 17:10:00 -0000
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--- Comment #8 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Apr 1 17:09:47 2019
New Revision: 270064
URL: https://gcc.gnu.org/viewcvs?rev=270064&root=gcc&view=rev
Log:
/cp
2019-04-01 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/62207
* pt.c (tsubst_copy): Deal with lookup_name not returing a variable.
/testsuite
2019-04-01 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/62207
* g++.dg/template/crash130.C: New.
* g++.dg/template/crash131.C: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/template/crash130.C
trunk/gcc/testsuite/g++.dg/template/crash131.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/62207] [7/8 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'overload' in tsubst_copy, at cp/pt.c
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE: |[7/8 Regression] ICE: tree
|tree check: expected tree |check: expected tree that
|that contains 'decl |contains 'decl minimal'
|minimal' structure, have |structure, have 'overload'
|'overload' in tsubst_copy, |in tsubst_copy, at cp/pt.c
|at cp/pt.c |
--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk so far.
>From gcc-bugs-return-639231-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 17:23:56 2019
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Subject: [Bug tree-optimization/89908] New: Unnecessary rejection of dependence for outer loop vectorisation
Date: Mon, 01 Apr 2019 17:23:00 -0000
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Bug ID: 89908
Summary: Unnecessary rejection of dependence for outer loop
vectorisation
Product: gcc
Version: 9.0
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This loop:
void __attribute__ ((noipa))
f (int a[][N], int b[restrict])
{
for (int i = N - 1; i-- > 0; )
for (int j = 0; j < N - 1; ++j)
a[j + 1][i] = a[j][i + 1] + b[i];
}
should be vectorisable using outer loop vectorisation, since the
dependence between the lhs and rhs is in the same nonzero direction
for both loops.
See https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01224.html for
some discussion about how the dependence checks could be handled.
>From gcc-bugs-return-639232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 17:28:12 2019
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Subject: [Bug rtl-optimization/87763] [9 Regression] aarch64 target testcases fail after r265398
Date: Mon, 01 Apr 2019 17:28:00 -0000
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--- Comment #34 from Steve Ellcey <sje at gcc dot gnu.org> ---
I submitted a patch that would fix gcc.target/aarch64/combine_bfi_1.c back
in February but have not gotten any feedback on the final version of the
patch despite a couple of pings. I have resubmitted the patch again today
to see if one of the Aarch64 maintainers will look at it.
https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00045.html
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/89906] [8 Regression] template template parameter redeclared
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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>From gcc-bugs-return-639236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 17:57:24 2019
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Subject: [Bug c++/86946] [9 Regression] ICE: canonical types differ for identical types
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jason at gcc dot gnu.org
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Well-formed version of the testcase, that has never worked:
template <typename a, typename c> constexpr int d(a, c) { return 42; }
template <long> class e {};
template <unsigned long f, unsigned b, typename> e<d(f, b)> d();
template <unsigned long f, unsigned b, typename> e<d(f, b)> d();
int main()
{
d<1,2,int>();
}
With checking disabled, the two declarations are treated as ambiguous; with
checking enabled, we do structural comparison and find the internal
inconsistency, and so ICE.
What is the testcase from capnproto?
>From gcc-bugs-return-639237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:06:04 2019
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Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
Date: Mon, 01 Apr 2019 18:06:00 -0000
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--- Comment #14 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Mon Apr 1 18:05:08 2019
New Revision: 270065
URL: https://gcc.gnu.org/viewcvs?rev=270065&root=gcc&view=rev
Log:
sel-sched: correct reset of reset_sched_cycles_p (PR 85412)
2019-04-01 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/85412
* sel-sched.c (sel_sched_region): Assign reset_sched_cycles_p before
sel_sched_region_1, not after.
* gcc.dg/pr85412.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr85412.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sel-sched.c
trunk/gcc/testsuite/ChangeLog
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From: "pawel_sikora at zoho dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89909] New: false positive for for -Wunreachable-code.
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Bug ID: 89909
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#include <cstdio>
void foo( int i ) {
char const* j = nullptr;
switch ( i ) {
if ( 0 ) {
case 1:
j = "one";
}
if ( 0 ) {
case 2:
j = "two";
}
{
std::printf( "%s\n", j );
return;
}
default:
std::puts( "unknown" );
};
}
int main() {
foo( 0 );
foo( 1 );
foo( 2 );
foo( 3 );
return 0;
}
// g++ (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2)
% g++ t.cpp -Wall -Wunreachable-code -o t && ./t
t.cpp: In function ‘void foo(int)’:
t.cpp:8:9: warning: statement will never be executed [-Wswitch-unreachable]
if ( 0 ) {
^~
unknown
one
two
unknown
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85412] [8 Regression] ICE in put_TImodes, at sel-sched.c:7191
Date: Mon, 01 Apr 2019 18:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85412
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|put_TImodes, at |put_TImodes, at
|sel-sched.c:7191 |sel-sched.c:7191
--- Comment #15 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-639240-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:08:33 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89909] false positive for for -Wunreachable-code.
Date: Mon, 01 Apr 2019 18:08:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think the warning is correct, the first if (0) will never be executed.
>From gcc-bugs-return-639241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:16:03 2019
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From: "pawel_sikora at zoho dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89909] false positive for for -Wunreachable-code.
Date: Mon, 01 Apr 2019 18:15:00 -0000
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Pawel Sikora <pawel_sikora at zoho dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Pawel Sikora <pawel_sikora at zoho dot com> ---
(In reply to Andrew Pinski from comment #1)
> I think the warning is correct, the first if (0) will never be executed.
ack, i've missed the line number.
>From gcc-bugs-return-639242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:22:02 2019
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Subject: [Bug c++/89910] New: [7/8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:271
Date: Mon, 01 Apr 2019 18:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89910
Bug ID: 89910
Summary: [7/8/9 Regression] ICE in make_ssa_name_fn, at
tree-ssanames.c:271
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Affects versions gcc-7 and higher at -O2+ :
$ cat z1.cc
int a, b;
void *f;
void g (int c)
{
b = ((int (*)[c][a]) f)[0][0][0];
}
void h (int d)
{
g (d);
}
$ g++-6 -c z1.cc -O2
$
$ g++-9-20190331 -c z1.cc -O2
during GIMPLE pass: einline
z1.cc: In function 'void h(int)':
z1.cc:9:5: internal compiler error: in make_ssa_name_fn, at tree-ssanames.c:271
9 | g (d);
| ~~^~~
0xd44a55 make_ssa_name_fn(function*, tree_node*, gimple*, unsigned int)
../../gcc/tree-ssanames.c:268
0xbeb2de make_ssa_name
../../gcc/tree-ssanames.h:114
0xbeb2de remap_ssa_name
../../gcc/tree-inline.c:245
0xbed83f copy_tree_body_r(tree_node**, int*, void*)
../../gcc/tree-inline.c:1228
0xdca175 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12132
0xdca71e walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12454
0xdca71e walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12454
0xbea4bc remap_type_1
../../gcc/tree-inline.c:594
0xbea788 remap_type(tree_node*, copy_body_data*)
../../gcc/tree-inline.c:712
0xbee163 remap_gimple_op_r
../../gcc/tree-inline.c:1109
0xdca175 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12132
0xdca71e walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12454
0xdca71e walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12454
0x954280 walk_gimple_op(gimple*, tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
../../gcc/gimple-walk.c:202
0xbec40f remap_gimple_stmt
../../gcc/tree-inline.c:1888
0xbeefcb copy_bb
../../gcc/tree-inline.c:1938
0xbeefcb copy_cfg_body
../../gcc/tree-inline.c:2870
0xbeefcb copy_body
../../gcc/tree-inline.c:3112
0xbf1f2d expand_call_inline
../../gcc/tree-inline.c:4852
0xbf36b4 gimple_expand_calls_inline
../../gcc/tree-inline.c:5047
>From gcc-bugs-return-639243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:25:27 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89910] [7/8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:271
Date: Mon, 01 Apr 2019 18:25:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
CC| |mpolacek at gcc dot gnu.org
Component|c++ |tree-optimization
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r235817.
>From gcc-bugs-return-639244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:27:23 2019
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Subject: [Bug c/89911] New: [9 Regression] ICE in get_attr_nonstring_decl, at calls.c:1502
Date: Mon, 01 Apr 2019 18:27:00 -0000
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Bug ID: 89911
Summary: [9 Regression] ICE in get_attr_nonstring_decl, at
calls.c:1502
Product: gcc
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Changed between 20180610 and 20180624 :
$ cat z1.c
typedef __SIZE_TYPE__ size_t;
extern size_t strnlen ();
size_t foo ()
{
return strnlen ();
}
$ gcc-9-20180610 -c z1.c
$
$ gcc-9-20190331 -c z1.c
z1.c: In function 'foo':
z1.c:5:10: warning: too few arguments to built-in function 'strnlen' expecting
2 [-Wbuiltin-declaration-mismatch]
5 | return strnlen ();
| ^~~~~~~
z1.c:2:15: note: declared here
2 | extern size_t strnlen ();
| ^~~~~~~
during RTL pass: expand
z1.c:5:10: internal compiler error: Segmentation fault
5 | return strnlen ();
| ^~~~~~~~~~
0xa748df crash_signal
../../gcc/toplev.c:326
0x6b02b1 get_attr_nonstring_decl(tree_node*, tree_node**)
../../gcc/calls.c:1502
0x6b23f9 maybe_warn_nonstring_arg(tree_node*, tree_node*)
../../gcc/calls.c:1615
0x6b7270 initialize_argument_information
../../gcc/calls.c:2209
0x6b7270 expand_call(tree_node*, rtx_def*, int)
../../gcc/calls.c:3589
0x6a6454 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
../../gcc/builtins.c:7233
0x7bd01e expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/expr.c:11029
0x7c71b6 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc/expr.c:5673
0x7c7f8e expand_assignment(tree_node*, tree_node*, bool)
../../gcc/expr.c:5436
0x6c6b50 expand_call_stmt
../../gcc/cfgexpand.c:2722
0x6c6b50 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3691
0x6c6b50 expand_gimple_stmt
../../gcc/cfgexpand.c:3850
0x6cba07 expand_gimple_basic_block
../../gcc/cfgexpand.c:5886
0x6ce096 execute
../../gcc/cfgexpand.c:6509
>From gcc-bugs-return-639245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 18:34:37 2019
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Subject: [Bug testsuite/89907] Incorrect check_avx2_available
Date: Mon, 01 Apr 2019 18:34:00 -0000
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--- Comment #1 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Apr 1 18:34:00 2019
New Revision: 270066
URL: https://gcc.gnu.org/viewcvs?rev=270066&root=gcc&view=rev
Log:
Check avx2_available in check_avx2_available
check_avx2_available should check avx2_available, instead of avx_available.
Otherwise, check_avx2_available may use result from check_avx_available.
PR testsuite/89907
* lib/target-supports.exp (check_avx2_available): Replace
avx_available with avx2_available.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/target-supports.exp
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
Date: Mon, 01 Apr 2019 18:39:00 -0000
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--- Comment #1 from anlauf at gcc dot gnu.org ---
Can you find out which of the tests in file pr85797.f90 triggers the ICE?
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Subject: [Bug c++/86946] [9 Regression] ICE: canonical types differ for identical types
Date: Mon, 01 Apr 2019 18:46:00 -0000
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--- Comment #7 from David Binderman <dcb314 at hotmail dot com> ---
Created attachment 46070
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46070&action=edit
C++ source code
Original C++ code from package capnproto.
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
Date: Mon, 01 Apr 2019 18:50:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Also seen on powerpc-ibm-aix7.2.0.0.
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Subject: [Bug testsuite/89907] Incorrect check_avx2_available
Date: Mon, 01 Apr 2019 19:17:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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Subject: [Bug translation/89912] New: typo in params.def: scop
Date: Mon, 01 Apr 2019 19:39:00 -0000
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Bug ID: 89912
Summary: typo in params.def: scop
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DEFPARAM (PARAM_GRAPHITE_MAX_NB_SCOP_PARAMS,
"graphite-max-nb-scop-params",
"Maximum number of parameters in a SCoP.",
10, 0, 0)
/* Maximal number of array references in a scop. */
DEFPARAM (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP,
"graphite-max-arrays-per-scop",
"Maximum number of arrays per scop.",
100, 0, 0)
One of "SCoP" and "scop" is wrong, they should be spelled the same.
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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--- Comment #3 from seurer at gcc dot gnu.org ---
Best I can tell from poking around in gdb is that it is happening at line 32
end subroutine s
that's probably not much help. Sorry!
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Subject: [Bug middle-end/89911] [9 Regression] ICE in get_attr_nonstring_decl, at calls.c:1502
Date: Mon, 01 Apr 2019 19:56:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |middle-end
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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89913] New: [7/8/9 Regression] [concepts] ICE with invalid using declaration
Date: Mon, 01 Apr 2019 20:08:00 -0000
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Bug ID: 89913
Summary: [7/8/9 Regression] [concepts] ICE with invalid using
declaration
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
CC: paolo.carlini at oracle dot com
Blocks: 67491
Target Milestone: ---
The following invalid testcase (compiled with "-fconcepts")
triggers an ICE since GCC 6.1.0:
=============================================
template<typename...> using A = auto;
template<typename... T> using B = A<T...>;
=============================================
bug.cc:1:33: error: 'auto' not allowed in alias declaration
1 | template<typename...> using A = auto;
| ^~~~
bug.cc:3:41: internal compiler error: Segmentation fault
3 | template<typename... T> using B = A<T...>;
| ^
0xf81b6f crash_signal
../../gcc/gcc/toplev.c:326
0x9e7869 get_underlying_template
../../gcc/gcc/cp/pt.c:6174
0xa0e8ef lookup_template_class_1
../../gcc/gcc/cp/pt.c:9294
0xa0e8ef lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/gcc/cp/pt.c:9728
0xa3ac3b finish_template_type(tree_node*, tree_node*, int)
../../gcc/gcc/cp/semantics.c:3312
0x9b871d cp_parser_template_id
../../gcc/gcc/cp/parser.c:16479
0x9b88b7 cp_parser_class_name
../../gcc/gcc/cp/parser.c:23274
0x9bb9d0 cp_parser_qualifying_entity
../../gcc/gcc/cp/parser.c:6693
0x9bb9d0 cp_parser_nested_name_specifier_opt
../../gcc/gcc/cp/parser.c:6379
0x9b9073 cp_parser_simple_type_specifier
../../gcc/gcc/cp/parser.c:17837
0x9aeae5 cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:17505
0x9c3478 cp_parser_type_specifier_seq
../../gcc/gcc/cp/parser.c:21983
0x9c0544 cp_parser_type_id_1
../../gcc/gcc/cp/parser.c:21812
0x9c52c3 cp_parser_type_id
../../gcc/gcc/cp/parser.c:21891
0x9c52c3 cp_parser_alias_declaration
../../gcc/gcc/cp/parser.c:19643
0x9d0ee7 cp_parser_template_declaration_after_parameters
../../gcc/gcc/cp/parser.c:27851
0x9d1617 cp_parser_explicit_template_declaration
../../gcc/gcc/cp/parser.c:28104
0x9d1617 cp_parser_template_declaration_after_export
../../gcc/gcc/cp/parser.c:28123
0x9d40e9 cp_parser_declaration
../../gcc/gcc/cp/parser.c:13185
0x9d473c cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4698
Please submit a full bug report, [etc.]
This is similar to PR84423, but hasn't been fixed yet.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491
[Bug 67491] [meta-bug] concepts issues
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Mon, 01 Apr 2019 20:09:00 -0000
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
A shorter reproducer:
$ cat types-2.f90
module TYPES_MODULE
implicit none
type archive_type
character(2**18) :: root_name
end type archive_type
end module TYPES_MODULE
$ gfortran -c types-2.f90
$ bloaty types-2.o
VM SIZE FILE SIZE
-------------- --------------
100.0% 256Ki .rodata 256Ki 99.3%
0.0% 0 [ELF Headers] 960 0.4%
0.0% 0 .symtab 312 0.1%
0.0% 0 .strtab 180 0.1%
0.0% 0 .shstrtab 102 0.0%
0.0% 56 .eh_frame 56 0.0%
0.0% 0 .rela.rodata 48 0.0%
0.0% 45 .text 45 0.0%
0.0% 0 .comment 42 0.0%
0.0% 0 [Unmapped] 31 0.0%
0.0% 0 .rela.eh_frame 24 0.0%
0.0% 0 .rela.text 24 0.0%
100.0% 256Ki TOTAL 257Ki 100.0%
>From gcc-bugs-return-639256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:16:17 2019
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
Date: Mon, 01 Apr 2019 20:16:00 -0000
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--- Comment #4 from anlauf at gcc dot gnu.org ---
(In reply to seurer from comment #3)
> Best I can tell from poking around in gdb is that it is happening at line 32
>
> end subroutine s
>
> that's probably not much help. Sorry!
So if you comment out lines 24-33 (the part "module m" until the final "end"),
there's no ICE, and if you keep only those lines (commenting lines 6-22),
there's no ICE?
This would mean that PR83515 either is not completely fixed,
or the fix exposes something else that doesn't show up on x86_64.
I see the following options:
- XFAIL the testcase where needed, until this PR gets fixed
(maybe there's a related issue)
- reopen PR83515 and remove lines 24-33 from the testcase; the tests given
that PR may succeed on x86_64, but lead to an ICE in a different place
elsewhere
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Subject: [Bug c++/89913] [7/8/9 Regression] [concepts] ICE with invalid using declaration
Date: Mon, 01 Apr 2019 20:16:00 -0000
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |7.5
>From gcc-bugs-return-639257-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:17:25 2019
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Mon, 01 Apr 2019 20:17:00 -0000
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--- Comment #17 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #16)
> A shorter reproducer:
which results in the assembly file
.file "types-2.f90"
.text
.globl __types_module_MOD___def_init_types_module_Archive_type
.section .rodata
.align 32
.type __types_module_MOD___def_init_types_module_Archive_type,
@object
.size __types_module_MOD___def_init_types_module_Archive_type, 262144
__types_module_MOD___def_init_types_module_Archive_type:
.zero 262144
[...]
There is no earthly reason why this should not go into BSS, all
it contains are zeros.
Question: How would one invoke the necessary magic to put this into BSS
in the gfortran front end? Or does anybody volunteer?
(I'd really like to get this fixed before the 9.0 release).
>From gcc-bugs-return-639258-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:18:14 2019
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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--- Comment #5 from anlauf at gcc dot gnu.org ---
(In reply to anlauf from comment #4)
> and if you keep only those lines (commenting lines 6-22),
> there's no ICE?
Sorry, I meant there an ICE here on your target.
>From gcc-bugs-return-639259-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:18:53 2019
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Mon, 01 Apr 2019 20:18:00 -0000
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--- Comment #18 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Or see https://gcc.gnu.org/ml/fortran/2019-04/msg00002.html .
>From gcc-bugs-return-639260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:31:48 2019
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Subject: [Bug other/55930] libatomic build failure if configured with --disable-dependency-tracking
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Richard Purdie from comment #2)
> Created attachment 30880 [details]
> patch which fixes the problem
>
> This patch fixes the build failure when --disable-dependency-tracking is
> passed
Patches should be posted to gcc-patches@ .
But the bigger question is why are you passing --disable-dependency-tracking
?
>From gcc-bugs-return-639261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:31:51 2019
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Subject: [Bug c++/89914] New: [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
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Bug ID: 89914
Summary: [9 Regression] ICE in nothrow_spec_p, at
cp/except.c:1238
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
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CC: jason at gcc dot gnu.org, paolo.carlini at oracle dot com
Target Milestone: ---
The following invalid testcase triggers an ICE on trunk:
========================================
struct A
{
int i = ;
};
bool b = __has_nothrow_constructor (A);
========================================
bug.cc:3:9: error: expected primary-expression at end of input
3 | int i = ;
| ^
bug.cc:6:38: internal compiler error: in nothrow_spec_p, at cp/except.c:1238
6 | bool b = __has_nothrow_constructor (A);
| ^
0x614d85 nothrow_spec_p(tree_node const*)
../../gcc/gcc/cp/except.c:1238
0xa42acf finish_trait_expr(cp_trait_kind, tree_node*, tree_node*)
../../gcc/gcc/cp/semantics.c:9788
0x9c5a59 cp_parser_trait_expr
../../gcc/gcc/cp/parser.c:10365
0x9b58bf cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:5544
0x9b9ccb cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7175
0x9c75c9 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8469
0x9a185f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9355
0x9a206a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9458
0x9a3007 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9756
0x9a2a0d cp_parser_constant_expression
../../gcc/gcc/cp/parser.c:10038
0x9a2fb1 cp_parser_initializer_clause
../../gcc/gcc/cp/parser.c:22814
0x9a6d6f cp_parser_initializer
../../gcc/gcc/cp/parser.c:22752
0x9cdc99 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:20468
0x9b029e cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:13539
0x9d3fc0 cp_parser_declaration
../../gcc/gcc/cp/parser.c:13236
0x9d473c cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4698
0x9d473c c_parse_file()
../../gcc/gcc/cp/parser.c:41180
0xadaa9b c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1156
Please submit a full bug report, [etc.]
The ICE is similar to PR89571, it also regressed in February 2019.
Alas the patch there did not fix it.
>From gcc-bugs-return-639262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:32:07 2019
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Subject: [Bug c++/89914] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
Date: Mon, 01 Apr 2019 20:32:00 -0000
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-639263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:35:14 2019
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
Date: Mon, 01 Apr 2019 20:35:00 -0000
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--- Comment #6 from seurer at gcc dot gnu.org ---
Actually, it is the opposite.
With 24-33 commented out:
seurer@makalu-lp1:~/gcc/build/gcc-test$ cat
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90
. . .
! module m
! contains
! function f () result (z) ! { dg-warning "Return value" }
! class(*), pointer :: z
! end function f
! recursive subroutine s (q)
! procedure(f) :: q
! call s (q)
! end subroutine s
! end
seurer@makalu-lp1:~/gcc/build/gcc-test$
/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../gfortran
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../
-B/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O -Wall -S -o pr85797.s
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:7:16: Warning:
Non-RECURSIVE procedure 'a' at (1) is possibly calling itself recursively.
Declare it RECURSIVE or use '-frecursive'
during GIMPLE pass: ccp
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:22:0: internal
compiler error: in fold_convert_loc, at fold-const.c:2552
0x106a8b87 fold_convert_loc(unsigned int, tree_node*, tree_node*)
/home/seurer/gcc/gcc-test/gcc/fold-const.c:2552
0x10e9e8fb build_zero_cst(tree_node*)
/home/seurer/gcc/gcc-test/gcc/tree.c:2382
0x10c592fb evaluate_stmt
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:1997
0x10c5aa63 visit_assignment
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2352
0x10c5acfb ccp_propagate::visit_stmt(gimple*, edge_def**, tree_node**)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2430
0x10d13433 ssa_propagation_engine::simulate_stmt(gimple*)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:230
0x10d138cb ssa_propagation_engine::simulate_block(basic_block_def*)
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:337
0x10d159a3 ssa_propagation_engine::ssa_propagate()
/home/seurer/gcc/gcc-test/gcc/tree-ssa-propagate.c:802
0x10c5399f do_ssa_ccp
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2471
0x10c5399f execute
/home/seurer/gcc/gcc-test/gcc/tree-ssa-ccp.c:2515
With the rest commented out but not lines 24-33:
seurer@makalu-lp1:~/gcc/build/gcc-test$ cat
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90
. . .
! subroutine a
! c = transfer (a, b) ! { dg-warning "Non-RECURSIVE procedure" }
! end
!
! recursive subroutine d
! c = transfer (d, b)
! end
!
! recursive subroutine e
! k = transfer (transfer (e, e), 1)
! end
!
! subroutine f
! use, intrinsic :: iso_c_binding
! integer(c_intptr_t) :: b, c
! c = transfer (transfer (b, a), b)
! end
module m
. . .
seurer@makalu-lp1:~/gcc/build/gcc-test$
/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../gfortran
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/gfortran/../../
-B/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O -Wall -S -o pr85797.s
a->name=='(null)'
/home/seurer/gcc/gcc-test/gcc/testsuite/gfortran.dg/pr85797.f90:26:26: Warning:
Return value 'z' of function 'f' declared at (1) not set [-Wreturn-type]
seurer@makalu-lp1:~/gcc/build/gcc-test$
>From gcc-bugs-return-639264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:36:47 2019
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From: "roland.illig at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug translation/89915] New: clean up and canonicalize wording in params.def
Date: Mon, 01 Apr 2019 20:36:00 -0000
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Bug ID: 89915
Summary: clean up and canonicalize wording in params.def
Product: gcc
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As of 2019-04-01, the params.def looks as if it has been written by many
different authors with no coordination:
* some parameter descriptions start with "The", others don't.
* some parameter descriptions contain long and helpful explanations, most
others don't.
* some parameter descriptions still contain redundant comments. I complained
about this one year ago in #79632, but nothing has happened since then.
* PARAM_LOGICAL_OP_NON_SHORT_CIRCUIT has "True if a non-short-circuit operation
is optimal." as a description. This differs in grammatical style from the other
descriptions. It's also not clear how to express "true", since "gcc -c --param
min-vect-loop-bound=true empty.c" results in "cc1: error: invalid --param value
'true'".
In summary, the writing style in params.def is inconsistent in many places and
on many levels.
This makes it hard to translate the strings in this file into proper and
understandable German. This in turn makes it really difficult for
German-speaking programmers to know what slang terms GCC is throwing at them,
and they will probably switch over to Clang to get better diagnostics.
Someone familiar with all the words mentioned in that file should explain each
of these words to an average programmer and rewrite the parameter descriptions
according to the needs of that average programmer.
>From gcc-bugs-return-639265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:42:13 2019
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
Date: Mon, 01 Apr 2019 20:42:00 -0000
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--- Comment #8 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #5)
> > --- Comment #4 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
> > (In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #3)
> >>
> >> FAIL: ../src/std/range/package.d -fversion=Shared -shared-libphobos (test
> >> for excess errors)
> >> FAIL: ../src/std/socket.d -fversion=Shared -shared-libphobos (test for
> >> excess errors)
> >> FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos (test for excess
> >> errors)
> >> FAIL: ../src/std/stdio.d -fversion=Shared -shared-libphobos execution test
> >>
> >> std.exception.ErrnoException@/vol/gcc/src/hg/trunk/local/libphobos/testsuite/
> >> ../src/std/stdio.d(1028): Could not seek in file
> >> `/tmp/deleteme.dmd.unittest.pid16148-детка.stdio.d.1037' (Invalid argument)
> >>
> >
> > There's no backtrace, so don't know which unittest it came from, what are the
> > reasons why fseeko may return invalid argument on Solaris? Specifically
> > anything that differs from other implementations.
>
> Off the top of my head, could be related to largefile handling (or lack
> thereof).
I've just spotted that the line number is conveniently part of the file name
(line 1037)
Looking at that unittest, it is indeed testing largefile handing.
---
version (CRuntime_DigitalMars)
auto bigOffset = int.max - 100;
else version (CRuntime_Bionic)
auto bigOffset = int.max - 100;
else
auto bigOffset = cast(ulong) int.max + 100;
f.seek(bigOffset);
assert(f.tell == bigOffset, text(f.tell));
---
And subsequently finding this documentation:
https://docs.oracle.com/cd/E37069_01/html/E54439/fseeko64-3f.html
fseeko64 and ftello64 operate identically to fseek and ftell respectively,
except that the first two routines will operate on "large files" as well --
files with size in bytes greater than the range of INTEGER*4 data (2 Gb). Large
file support was introduced with the Solaris 2.6 operating environment.
In the druntime bindings there's only glibc that has large file support.
---
else version (Posix)
{
int fseeko(FILE*, off_t, int);
off_t ftello(FILE*);
}
---
So its either fix the phobos test to use an offset less than 2GB on Solaris, or
add necessary fseeko64 definitions to druntime to use the large file functions
instead. Probably the latter.
>From gcc-bugs-return-639266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:43:43 2019
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Subject: [Bug c++/86946] [9 Regression] ICE: canonical types differ for identical types
Date: Mon, 01 Apr 2019 20:43:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-639267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:43:52 2019
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Subject: [Bug c++/86946] [9 Regression] ICE: canonical types differ for identical types
Date: Mon, 01 Apr 2019 20:43:00 -0000
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--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Apr 1 20:43:13 2019
New Revision: 270068
URL: https://gcc.gnu.org/viewcvs?rev=270068&root=gcc&view=rev
Log:
PR c++/86946 - ICE with function call in template argument.
DR 1321 clarified that two dependent names are equivalent if the names are
the same, even if the result of name lookup is different. We need to
implement that in hashing like we already do in comparison and mangling.
* pt.c (iterative_hash_template_arg) [CALL_EXPR]: Use
dependent_name.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/fntmp-equiv1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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--- Comment #7 from anlauf at gcc dot gnu.org ---
(In reply to seurer from comment #6)
> Actually, it is the opposite.
Oh, that is surprising.
So if you comment out subroutine f, there's no ICE?
And if you keep only subroutine a and subroutine f, it ICEs?
>From gcc-bugs-return-639269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:50:47 2019
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
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--- Comment #19 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Unfortunately, this patch
Index: class.c
===================================================================
--- class.c (Revision 269895)
+++ class.c (Arbeitskopie)
@@ -911,6 +911,9 @@ finalize_component (gfc_expr *expr, gfc_symbol *de
if (!comp_is_finalizable (comp))
return;
+ if (comp->finalized)
+ return;
+
e = gfc_copy_expr (expr);
if (!e->ref)
e->ref = ref = gfc_get_ref ();
@@ -1038,6 +1041,7 @@ finalize_component (gfc_expr *expr, gfc_symbol *de
sub_ns);
gfc_free_expr (e);
}
+ comp->finalized = true;
}
@@ -2290,9 +2294,10 @@ gfc_find_derived_vtab (gfc_symbol *derived)
gfc_find_symbol (name, ns, 0, &vtype);
if (vtype == NULL)
{
- gfc_component *c;
+ gfc_component *c, *csave;
gfc_symbol *parent = NULL, *parent_vtab = NULL;
bool rdt = false;
+ bool has_init = false;
/* Is this a derived type with recursive allocatable
components? */
@@ -2299,6 +2304,8 @@ gfc_find_derived_vtab (gfc_symbol *derived)
c = (derived->attr.unlimited_polymorphic
|| derived->attr.abstract) ?
NULL : derived->components;
+ csave = c;
+
for (; c; c= c->next)
if (c->ts.type == BT_DERIVED
&& c->ts.u.derived == derived)
@@ -2307,6 +2314,15 @@ gfc_find_derived_vtab (gfc_symbol *derived)
break;
}
+ for (c = csave; c; c = c->next)
+ {
+ if (c->initializer)
+ {
+ has_init = true;
+ break;
+ }
+ }
+
gfc_get_symbol (name, ns, &vtype);
if (!gfc_add_flavor (&vtype->attr, FL_DERIVED, NULL,
&gfc_current_locus))
@@ -2383,7 +2399,7 @@ gfc_find_derived_vtab (gfc_symbol *derived)
c->ts.type = BT_DERIVED;
c->ts.u.derived = derived;
if (derived->attr.unlimited_polymorphic
- || derived->attr.abstract)
+ || derived->attr.abstract || !has_init)
c->initializer = gfc_get_null_expr (NULL);
else
{
Index: gfortran.h
===================================================================
--- gfortran.h (Revision 269895)
+++ gfortran.h (Arbeitskopie)
@@ -1094,6 +1094,7 @@ typedef struct gfc_component
struct gfc_typebound_proc *tb;
/* When allocatable/pointer and in a coarray the associated token. */
tree caf_token;
+ bool finalized;
}
gfc_component;
leads to testsuite failures (allocate_with_source_5.f90,
allocate_with_source_6.f90 and possibly others).
So, it seems as if the BSS idea might have some merit. Ideas on how
to implement this, anybody?
>From gcc-bugs-return-639270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 20:51:57 2019
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Subject: [Bug c++/81721] precompiled header : internal compiler error: Segmentation fault
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So if I understand the token->val.node.spelling for "not" (CPP_NOT) is not
being preserved over the precompiled headers.
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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--- Comment #8 from seurer at gcc dot gnu.org ---
With no f: ICE
With only subroutine a and subroutine f: no ICE
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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--- Comment #9 from anlauf at gcc dot gnu.org ---
(In reply to seurer from comment #8)
> With no f: ICE
>
> With only subroutine a and subroutine f: no ICE
Now it gets really mysterious.
If you start from the full testcase, and remove - starting from the end -
block for block: first module m, then subroutine f, then subroutine e,
then subroutine d, what does trigger the ICE?
>From gcc-bugs-return-639273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 21:14:36 2019
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Subject: [Bug d/88462] All D execution tests FAIL on Solaris/SPARC
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--- Comment #17 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #16 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
> Uni-Bielefeld.DE> ---
[...]
> Once I'd recompiled libphobos at -g3 -O0, the problem vanished, though.
> I'll look closer and report my findings separately.
Before going to bed, here are the gdc testresults for the -g3 -O0
libphobos (32 and 64-bit combined):
=== gdc Summary ===
# of expected passes 55351
# of unexpected failures 3109
# of unresolved testcases 256
# of unsupported tests 40
and for libphobos it's
=== libphobos Summary ===
# of expected passes 128
# of unexpected failures 53
I still had to kill off a couple of tests that were looping in calls to
nanosleep. Will check in more detail later.
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Subject: [Bug c++/81721] precompiled header : internal compiler error: Segmentation fault
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-01
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 46071
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46071&action=edit
New patch
Turns out the fix is simple.
If we have a SPELL_OPERATOR where the flags is set NAMED_OP, then we need say
node needs to be walked for PCH to keep around.
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Subject: [Bug other/55930] libatomic build failure if configured with --disable-dependency-tracking
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Richard Purdie <richard.purdie at linuxfoundation dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |richard.purdie@linuxfoundat
| |ion.org
--- Comment #6 from Richard Purdie <richard.purdie at linuxfoundation dot org> ---
(In reply to Andrew Pinski from comment #5)
> (In reply to Richard Purdie from comment #2)
> > Created attachment 30880 [details]
> > patch which fixes the problem
> >
> > This patch fixes the build failure when --disable-dependency-tracking is
> > passed
>
> Patches should be posted to gcc-patches@ .
>
> But the bigger question is why are you passing --disable-dependency-tracking
> ?
Its part of a Yocto Project build and we would only ever build it once so we
don't need/want the overhead of the dependency tracking information.
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Subject: [Bug c++/81721] precompiled header : internal compiler error: Segmentation fault
Date: Mon, 01 Apr 2019 21:26:00 -0000
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--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a much simplier testcase (without using system header files):
a.h:
# define __glibc_macro_warning1(message) _Pragma (#message)
# define __glibc_macro_warning(message) \
__glibc_macro_warning1 (GCC warning message)
#define __SYSMACROS_DM1(...) __glibc_macro_warning (#__VA_ARGS__)
#define __SYSMACROS_DM(symbol) __SYSMACROS_DM1 \
(Did not Work)
# define major(dev) __SYSMACROS_DM (major) (dev+0)
---- CUT ---
a.c:
#include "a.h"
int main(void){ major(0);}
---- CUT ----
I will submit a patch for this soon.
>From gcc-bugs-return-639277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 21:30:41 2019
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Subject: [Bug translation/89915] clean up and canonicalize wording in params.def
Date: Mon, 01 Apr 2019 21:30:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
While I agree that params.def needs some fix ups in their working. params
should be considered as internal options which only should be used for
debugging and not even documented in the normal documentation.
>From gcc-bugs-return-639278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 21:31:52 2019
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Subject: [Bug c/89888] [7/8/9 Regression] When switch controlling expression is promoted from type narrower than int, GCC does not diagnose identical cases
Date: Mon, 01 Apr 2019 21:31:00 -0000
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.5
Summary|When switch controlling |[7/8/9 Regression] When
|expression is promoted from |switch controlling
|type narrower than int, GCC |expression is promoted from
|does not diagnose identical |type narrower than int, GCC
|cases |does not diagnose identical
| |cases
--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
This is a regression introduced in 4.0 relative to 3.4.
>From gcc-bugs-return-639279-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 21:33:16 2019
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Subject: [Bug testsuite/89916] New: New test case gcc.dg/pr86928.c fails on 64 bit targets
Date: Mon, 01 Apr 2019 21:33:00 -0000
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Bug ID: 89916
Summary: New test case gcc.dg/pr86928.c fails on 64 bit targets
Product: gcc
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This test case probably needs to be limited to 32 bit supporting targets.
Executing on host: /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/pr86928.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O2 -fnon-call-exceptions -fsel-sched-pipelining
-fsel-sched-pipelining-outer-loops -fselective-scheduling -fno-if-conversion
-fno-tree-dce -w -m32 -S -o pr86928.s (timeout = 300)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/pr86928.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O2 -fnon-call-exceptions -fsel-sched-pipelining
-fsel-sched-pipelining-outer-loops -fselective-scheduling -fno-if-conversion
-fno-tree-dce -w -m32 -S -o pr86928.s
cc1: error: '-m32' not supported in this configuration
compiler exited with status 1
FAIL: gcc.dg/pr86928.c (test for excess errors)
Excess errors:
cc1: error: '-m32' not supported in this configuration
>From gcc-bugs-return-639280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:08:54 2019
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Subject: [Bug c++/89917] New: [8/9 Regression] ICE with lambda in variadic template hierarchy
Date: Mon, 01 Apr 2019 22:08:00 -0000
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Bug ID: 89917
Summary: [8/9 Regression] ICE with lambda in variadic template
hierarchy
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
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The following valid code snippet triggers an ICE since GCC 8.2.0,
so this is a regression on the GCC 8 branch.
=============================================
struct A
{
A(...);
};
template<typename... T> struct B : T...
{
B() : T([]{})... {}
};
B<A> b;
=============================================
bug.cc: In instantiation of 'B<T>::B() [with T = {A}]':
bug.cc:11:6: required from here
bug.cc:8:16: internal compiler error: tree check: expected tree_vec, have
type_pack_expansion in tsubst_initializer_list, at cp/pt.c:24915
8 | B() : T([]{})... {}
| ^~~
0x7da784 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9881
0x65d072 tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3176
0x65d072 tsubst_initializer_list
../../gcc/gcc/cp/pt.c:24915
0x9ff648 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:16981
0x9ff95d tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:16976
0x9fea39 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:17277
0x9fe3b8 instantiate_decl(tree_node*, bool, bool)
../../gcc/gcc/cp/pt.c:24730
0xa244db instantiate_pending_templates(int)
../../gcc/gcc/cp/pt.c:24846
0x941600 c_parse_final_cleanups()
../../gcc/gcc/cp/decl2.c:4818
Please submit a full bug report, [etc.]
>From gcc-bugs-return-639281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:09:10 2019
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Subject: [Bug c++/89917] [8/9 Regression] ICE with lambda in variadic template hierarchy
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.4
>From gcc-bugs-return-639282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:23:47 2019
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From: "roland.illig at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug translation/89915] clean up and canonicalize wording in params.def
Date: Mon, 01 Apr 2019 22:23:00 -0000
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--- Comment #2 from Roland Illig <roland.illig at gmx dot de> ---
(In reply to Andrew Pinski from comment #1)
> params should be considered as internal options
When I read the above, I first thought: Yay, less strings for me to translate.
Just exclude them from gcc.pot.
But then I remembered that "internal compiler errors" have also made their way
into gcc.pot. I don't see any benefit in translating internal errors, therefore
I have requested to remove these internal errors from the translation; see bug
80055. Nothing has happened on this topic in the last 2 years.
Therefore I guess this "internal" means the same as in "internal compiler
error", and that everything internal should still be translated.
There's a decision to make: either the internal stuff is really considered
internal, in which case no translation is necessary and the text quality
doesn't matter as well. Or, the word "internal" as used by the GCC project
actually means "publicly visible" and therefore needs high-quality text.
>From gcc-bugs-return-639283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:25:42 2019
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From: "allegra.vincent at outlook dot fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/89918] New: Tried compile something simple on arduino ide
Date: Mon, 01 Apr 2019 22:25:00 -0000
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Bug ID: 89918
Summary: Tried compile something simple on arduino ide
Product: gcc
Version: unknown
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Reporter: allegra.vincent at outlook dot fr
Target Milestone: ---
Arduino : 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Carte : "Arduino/Genuino
Uno"
C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\arduino-builder
-dump-prefs -logger=machine -hardware C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware
-tools C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\tools-builder
-tools C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-built-in-libraries C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\libraries
-libraries C:\Users\Vince\Documents\Arduino\libraries -fqbn=arduino:avr:uno
-vid-pid=0X2341_0X0043 -ide-version=10809 -build-path
C:\Users\Vince\AppData\Local\Temp\arduino_build_618539 -warnings=none
-build-cache C:\Users\Vince\AppData\Local\Temp\arduino_cache_580331
-prefs=build.warn_data_percentage=75
-prefs=runtime.tools.avr-gcc.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.arduinoOTA.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.avrdude.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.avrdude-6.3.0-arduino14.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-verbose
C:\Users\Vince\Documents\Arduino\Test_fast_pwm_29_03_2019\Test_fast_pwm_29_03_2019.ino
C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\arduino-builder
-compile -logger=machine -hardware C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware
-tools C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\tools-builder
-tools C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-built-in-libraries C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\libraries
-libraries C:\Users\Vince\Documents\Arduino\libraries -fqbn=arduino:avr:uno
-vid-pid=0X2341_0X0043 -ide-version=10809 -build-path
C:\Users\Vince\AppData\Local\Temp\arduino_build_618539 -warnings=none
-build-cache C:\Users\Vince\AppData\Local\Temp\arduino_cache_580331
-prefs=build.warn_data_percentage=75
-prefs=runtime.tools.avr-gcc.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.arduinoOTA.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.arduinoOTA-1.2.1.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.avrdude.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-prefs=runtime.tools.avrdude-6.3.0-arduino14.path=C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr
-verbose
C:\Users\Vince\Documents\Arduino\Test_fast_pwm_29_03_2019\Test_fast_pwm_29_03_2019.ino
Using board 'uno' from platform in folder: C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\arduino\avr
Using core 'arduino' from platform in folder: C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\arduino\avr
Detecting libraries used...
"C:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\tools\\avr/bin/avr-g++"
-c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections
-fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E
-CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10809 -DARDUINO_AVR_UNO
-DARDUINO_ARCH_AVR "-IC:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\arduino\\avr\\cores\\arduino"
"-IC:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\arduino\\avr\\variants\\standard"
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\sketch\\Test_fast_pwm_29_03_2019.ino.cpp"
-o nul
Generating function prototypes...
"C:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\tools\\avr/bin/avr-g++"
-c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections
-fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E
-CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10809 -DARDUINO_AVR_UNO
-DARDUINO_ARCH_AVR "-IC:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\arduino\\avr\\cores\\arduino"
"-IC:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\arduino\\avr\\variants\\standard"
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\sketch\\Test_fast_pwm_29_03_2019.ino.cpp"
-o
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\preproc\\ctags_target_for_gcc_minus_e.cpp"
"C:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\tools-builder\\ctags\\5.8-arduino11/ctags"
-u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns
--line-directives
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\preproc\\ctags_target_for_gcc_minus_e.cpp"
Compilation du croquis...
"C:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\tools\\avr/bin/avr-g++"
-c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections
-fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -MMD -flto
-mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10809 -DARDUINO_AVR_UNO
-DARDUINO_ARCH_AVR "-IC:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\arduino\\avr\\cores\\arduino"
"-IC:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\arduino\\avr\\variants\\standard"
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\sketch\\Test_fast_pwm_29_03_2019.ino.cpp"
-o
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\sketch\\Test_fast_pwm_29_03_2019.ino.cpp.o"
Compiling libraries...
Compiling core...
Using precompiled core:
C:\Users\Vince\AppData\Local\Temp\arduino_cache_580331\core\core_arduino_avr_uno_180a539c02cce575fcd7710170113f75.a
Linking everything together...
"C:\\Program
Files\\WindowsApps\\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\\hardware\\tools\\avr/bin/avr-gcc"
-w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539/Test_fast_pwm_29_03_2019.ino.elf"
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539\\sketch\\Test_fast_pwm_29_03_2019.ino.cpp.o"
"C:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539/..\\arduino_cache_580331\\core\\core_arduino_avr_uno_180a539c02cce575fcd7710170113f75.a"
"-LC:\\Users\\Vince\\AppData\\Local\\Temp\\arduino_build_618539" -lm
C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\arduino\avr\cores\arduino\HardwareSerial0.cpp:
In function '_GLOBAL__sub_I___vector_18':
C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\arduino\avr\cores\arduino\HardwareSerial0.cpp:77:1:
internal compiler error: Segmentation fault
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper.exe: fatal error: C:\Program
Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr/bin/avr-gcc
returned 1 exit status
compilation terminated.
c:/program
files/windowsapps/arduinollc.arduinoide_1.8.21.0_x86__mdqgnx93n4wtt/hardware/tools/avr/bin/../lib/gcc/avr/5.4.0/../../../../avr/bin/ld.exe:
error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
exit status 1
Erreur de compilation pour la carte Arduino/Genuino Uno
>From gcc-bugs-return-639284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:30:43 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89918] Tried compile something simple on arduino ide
Date: Mon, 01 Apr 2019 22:30:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 87695.
*** This bug has been marked as a duplicate of bug 87695 ***
>From gcc-bugs-return-639285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:30:59 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/87695] Arduino: ICE with avr and LTO
Date: Mon, 01 Apr 2019 22:30:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |allegra.vincent at outlook dot fr
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89918 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-639286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 22:46:14 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Mon, 01 Apr 2019 22:46:00 -0000
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--- Comment #20 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Sometimes life can be easy.
We need to make -fzero-initialized-in-bss the default for
gfortran.
>From gcc-bugs-return-639287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 01 23:17:17 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
Date: Mon, 01 Apr 2019 23:17:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to anlauf from comment #9)
> If you start from the full testcase, and remove - starting from the end -
> block for block: first module m, then subroutine f, then subroutine e,
> then subroutine d, what does trigger the ICE?
This segfaults on gcc135 (POWER9):
[tkoenig@gcc135 ~]$ cat a.f90
recursive subroutine e
k = transfer (transfer (e, e), 1)
end
[tkoenig@gcc135 ~]$ gfortran -O a.f90
Im Durchlauf GIMPLE: ccp
a.f90:3:0:
3 | end
|
interner Compiler-Fehler: in fold_convert_loc, bei fold-const.c:2552
0x10648633 fold_convert_loc(unsigned int, tree_node*, tree_node*)
../../trunk/gcc/fold-const.c:2552
0x10e9df87 build_zero_cst(tree_node*)
../../trunk/gcc/tree.c:2382
0x10c36297 evaluate_stmt
../../trunk/gcc/tree-ssa-ccp.c:1997
0x10c38403 visit_assignment
../../trunk/gcc/tree-ssa-ccp.c:2352
0x10cf266f ssa_propagation_engine::simulate_stmt(gimple*)
../../trunk/gcc/tree-ssa-propagate.c:230
0x10cf2acb ssa_propagation_engine::simulate_block(basic_block_def*)
../../trunk/gcc/tree-ssa-propagate.c:337
0x10cf4a63 ssa_propagation_engine::ssa_propagate()
../../trunk/gcc/tree-ssa-propagate.c:802
0x10c2ab27 do_ssa_ccp
../../trunk/gcc/tree-ssa-ccp.c:2471
0x10c2ab27 execute
../../trunk/gcc/tree-ssa-ccp.c:2515
Bitte senden Sie einen vollständigen Fehlerbericht auf Englisch ein;
inclusive vorverarbeitetem Quellcode, wenn es dienlich ist.
Please include the complete backtrace with any bug report.
Weitere Hinweise finden Sie unter »<https://gcc.gnu.org/bugs/>«.
-fdump-tree-original shows
e ()
{
integer(kind=4) k;
{
integer(kind=8) D.2240;
integer(kind=8) D.2241;
integer(kind=8) D.2242;
integer(kind=8) D.2243;
void <T374> (void) transfer.0;
void <T374> (void) D.2245;
static integer(kind=4) C.2246 = 1;
integer(kind=8) D.2247;
integer(kind=8) D.2248;
integer(kind=4) transfer.1;
D.2241 = 4;
D.2242 = 4;
__builtin_memcpy ((void *) &transfer.0, (void *) e, (unsigned long)
MAX_EXPR <MIN_EXPR <D.2242, D.2241>, 0>);
D.2245 = transfer.0;
D.2240 = 4;
D.2247 = 4;
__builtin_memcpy ((void *) &transfer.1, (void *) &D.2245, (unsigned long)
MAX_EXPR <MIN_EXPR <D.2247, D.2240>, 0>);
k = transfer.1;
}
}
>From gcc-bugs-return-639288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 00:14:48 2019
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Subject: [Bug c++/81721] precompiled header : internal compiler error: Segmentation fault
Date: Tue, 02 Apr 2019 00:14:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2019-04/msg00055.ht
| |ml
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Patch submitted (even with the simple testcase):
https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00055.html
>From gcc-bugs-return-639289-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 02:15:30 2019
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Subject: [Bug c/89909] false positive for for -Wswitch-unreachable.
Date: Tue, 02 Apr 2019 02:15:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |egallager at gcc dot gnu.org
Summary|false positive for for |false positive for for
|-Wunreachable-code. |-Wswitch-unreachable.
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
Also -Wswitch-unreachable is different from -Wunreachable-code
>From gcc-bugs-return-639290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 04:09:10 2019
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Subject: [Bug middle-end/89911] [9 Regression] ICE in get_attr_nonstring_decl, at calls.c:1502
Date: Tue, 02 Apr 2019 04:09:00 -0000
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JunMa <JunMa at linux dot alibaba.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |JunMa at linux dot alibaba.com
--- Comment #1 from JunMa <JunMa at linux dot alibaba.com> ---
diff --git a/gcc/calls.c b/gcc/calls.c
index 63c1bc5..d940ec8 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -1556,6 +1556,8 @@ maybe_warn_nonstring_arg (tree fndecl, tree exp)
return;
unsigned nargs = call_expr_nargs (exp);
+ if (nargs == 0)
+ return;
/* The bound argument to a bounded string function like strncpy. */
tree bound = NULL_TREE;
this patch fixes it.
>From gcc-bugs-return-639291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 04:49:55 2019
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #11 from kargl at gcc dot gnu.org ---
(In reply to Thomas Koenig from comment #10)
> (In reply to anlauf from comment #9)
>
> > If you start from the full testcase, and remove - starting from the end -
> > block for block: first module m, then subroutine f, then subroutine e,
> > then subroutine d, what does trigger the ICE?
>
> This segfaults on gcc135 (POWER9):
>
> [tkoenig@gcc135 ~]$ cat a.f90
> recursive subroutine e
> k = transfer (transfer (e, e), 1)
> end
> [tkoenig@gcc135 ~]$ gfortran -O a.f90
> Im Durchlauf GIMPLE: ccp
> a.f90:3:0:
>
> 3 | end
> |
> interner Compiler-Fehler: in fold_convert_loc, bei fold-const.c:2552
>
This is solved by
Index: gcc/fortran/check.c
===================================================================
--- gcc/fortran/check.c (revision 270064)
+++ gcc/fortran/check.c (working copy)
@@ -5551,6 +5551,20 @@ gfc_check_transfer (gfc_expr *source, gfc_expr *mold,
return false;
}
+ if (mold->ts.type == BT_PROCEDURE
+ && mold->symtree->n.sym->attr.subroutine == 1)
+ {
+ gfc_error("Stupidity occurring at %L", &mold->where);
+ return false;
+ }
+
+ if (source->ts.type == BT_PROCEDURE
+ && source->symtree->n.sym->attr.subroutine == 1)
+ {
+ gfc_error("Stupidity occurring at %L", &source->where);
+ return false;
+ }
+
if (size != NULL)
{
if (!type_check (size, 2, BT_INTEGER))
>From gcc-bugs-return-639292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 04:54:14 2019
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Subject: [Bug fortran/89904] [9 regression] ICE in gfortran starting with r270045
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--- Comment #12 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #11)
> (In reply to Thomas Koenig from comment #10)
> > (In reply to anlauf from comment #9)
> >
> > > If you start from the full testcase, and remove - starting from the end -
> > > block for block: first module m, then subroutine f, then subroutine e,
> > > then subroutine d, what does trigger the ICE?
> >
> > This segfaults on gcc135 (POWER9):
> >
> > [tkoenig@gcc135 ~]$ cat a.f90
> > recursive subroutine e
> > k = transfer (transfer (e, e), 1)
> > end
> > [tkoenig@gcc135 ~]$ gfortran -O a.f90
> > Im Durchlauf GIMPLE: ccp
> > a.f90:3:0:
> >
> > 3 | end
> > |
> > interner Compiler-Fehler: in fold_convert_loc, bei fold-const.c:2552
> >
>
> This is solved by
>
> Index: gcc/fortran/check.c
> ===================================================================
> --- gcc/fortran/check.c (revision 270064)
> +++ gcc/fortran/check.c (working copy)
> @@ -5551,6 +5551,20 @@ gfc_check_transfer (gfc_expr *source, gfc_expr *mold,
> return false;
> }
>
> + if (mold->ts.type == BT_PROCEDURE
> + && mold->symtree->n.sym->attr.subroutine == 1)
> + {
> + gfc_error("Stupidity occurring at %L", &mold->where);
> + return false;
> + }
> +
> + if (source->ts.type == BT_PROCEDURE
> + && source->symtree->n.sym->attr.subroutine == 1)
> + {
> + gfc_error("Stupidity occurring at %L", &source->where);
> + return false;
> + }
> +
> if (size != NULL)
> {
> if (!type_check (size, 2, BT_INTEGER))
For full context, F2018, 16.9.193
SOURCE shall be a scalar or array of any type.
MOLD shall be a scalar or array of any type.
A subroutine is neither a scalar, an array, nor has a type.
>From gcc-bugs-return-639293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 05:02:27 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/87695] Arduino: ICE with avr and LTO
Date: Tue, 02 Apr 2019 05:02:00 -0000
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--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> (In reply to Donna Ory from comment #3)
> > Sooo...what does that mean?
> > Do I still have a 3D printer that won't print because the problem lies with
> > the so called original program that I'm just trying to put back in it?
>
> It means that there's still disagreement as to whose responsibility this bug
> is exactly (Arduino's, Atmel's, MicrochipTech's, or someone else's). cc-ing
> AVR maintainers to see if they know who in the AVR/Arduino community might
> be the right person to talk to about this.
Someone from Arduino says it's MicroChipTech's problem:
https://twitter.com/gvarisco/status/1067800978999660544
More people need to tell them to configure with the --with-bugurl= flag
(besides just me) so we stop getting these reports.
>From gcc-bugs-return-639294-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 05:06:16 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug translation/89912] typo in params.def: scop
Date: Tue, 02 Apr 2019 05:06:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |easyhack
CC| |egallager at gcc dot gnu.org
Blocks| |40883
Severity|normal |trivial
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40883
[Bug 40883] [meta-bug] Translation breakage with trivial fixes
>From gcc-bugs-return-639295-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 05:11:42 2019
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Subject: [Bug translation/89915] clean up and canonicalize wording in params.def
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=79632,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=80055
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
At least some of these bullet points have trivial fixes, but I don't know if
that's also true when taking the bug as a whole, so thus I don't know whether
this should block bug 40883 or not...
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Subject: [Bug d/89823] Composed message only partially translatable
Date: Tue, 02 Apr 2019 05:23:00 -0000
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--- Comment #2 from ibuclaw at gcc dot gnu.org ---
Author: ibuclaw
Date: Tue Apr 2 05:23:20 2019
New Revision: 270074
URL: https://gcc.gnu.org/viewcvs?rev=270074&root=gcc&view=rev
Log:
gcc/po/ChangeLog:
2019-04-02 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/89823
* EXCLUDES: Update list of d/dmd sources.
* gcc.pot: Regenerated.
Modified:
trunk/gcc/po/ChangeLog
trunk/gcc/po/EXCLUDES
trunk/gcc/po/gcc.pot
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Subject: [Bug testsuite/89916] New test case gcc.dg/pr86928.c fails on 64 bit targets (r270061)
Date: Tue, 02 Apr 2019 06:23:00 -0000
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-02
Blocks| |86928
Assignee|unassigned at gcc dot gnu.org |amonakov at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Thanks. I assume the test should not attempt to add -m32 and this line needs to
be removed:
/* { dg-additional-options "-m32" { target powerpc*-*-* } } */
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86928
[Bug 86928] ICE in compute_live, at sel-sched.c:3097
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Subject: [Bug c++/89917] [8/9 Regression] ICE with lambda in variadic template hierarchy
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-02
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Known to work| |7.4.0
Ever confirmed|0 |1
Known to fail| |8.2.0, 8.3.0, 9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r261726 aka PR86200.
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Subject: [Bug c++/89914] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
Date: Tue, 02 Apr 2019 06:37:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-02
CC| |marxin at gcc dot gnu.org
Known to work| |8.3.0
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r269032.
>From gcc-bugs-return-639300-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 06:40:22 2019
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Subject: [Bug middle-end/89911] [9 Regression] ICE in get_attr_nonstring_decl, at calls.c:1502
Date: Tue, 02 Apr 2019 06:40:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-02
CC| |marxin at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Known to work| |8.3.0
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r261705.
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From: "roman.s.dubtsov at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89919] New: internal compiler error when building MKL-DNN
Date: Tue, 02 Apr 2019 07:20:00 -0000
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Bug ID: 89919
Summary: internal compiler error when building MKL-DNN
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: roman.s.dubtsov at intel dot com
Target Milestone: ---
Created attachment 46072
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46072&action=edit
Reproducer (unpack before use)
Disclaimer: I've built the gcc 8.3.0 (and gmp 6.1.2, mpc 1.1.0, mfpr 4.0.2)
myself. The latter libraries were built using system's gcc 4.8.5. My system is
RHEL 7.3. Here's full compiler output leading to the ICE:
$ g++ -v -std=c++11 -fvisibility-inlines-hidden -Wall -Wno-unknown-pragmas
-Werror -fvisibility=internal -march=native -mtune=native -fPIC -Wformat
-Wformat-security -fstack-protector-strong -mtune=core-avx2 -march=core-avx2
-fopenmp -Wmissing-field-initializers -Wno-strict-overflow -O3 -c ref_rnn.ii
Using built-in specs.
COLLECT_GCC=g++
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-8.3.0/configure
--prefix=/nfs/site/disks/hal9000/rsdubtso/work/tools/gcc/8.3.0
--with-gmp=/nfs/site/disks/hal9000/rsdubtso/work/tools/gmp/6.1.2
--with-mpfr=/nfs/site/disks/hal9000/rsdubtso/work/tools/mpfr/4.0.2
--with-mpc=/nfs/site/disks/hal9000/rsdubtso/work/tools/mpc/1.1.0
Thread model: posix
gcc version 8.3.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-fvisibility-inlines-hidden' '-Wall'
'-Wno-unknown-pragmas' '-Werror' '-fvisibility=internal' '-march=native'
'-mtune=native' '-fPIC' '-Wformat=1' '-Wformat-security'
'-fstack-protector-strong' '-mtune=core-avx2' '-march=core-avx2' '-fopenmp'
'-Wmissing-field-initializers' '-Wno-strict-overflow' '-O3' '-c'
'-shared-libgcc' '-pthread'
/nfs/site/disks/hal9000/rsdubtso/work/tools/gcc/8.3.0/libexec/gcc/x86_64-pc-linux-gnu/8.3.0/cc1plus
-fpreprocessed ref_rnn.ii -march=broadwell -mmmx -mno-3dnow -msse -msse2 -msse3
-mssse3 -mno-sse4a -mcx16 -msahf -mmovbe -maes -mno-sha -mpclmul -mpopcnt -mabm
-mno-lwp -mfma -mno-fma4 -mno-xop -mbmi -mno-sgx -mbmi2 -mno-pconfig
-mno-wbnoinvd -mno-tbm -mavx -mavx2 -msse4.2 -msse4.1 -mlzcnt -mrtm -mhle
-mrdrnd -mf16c -mfsgsbase -mrdseed -mprfchw -madx -mfxsr -mxsave -mxsaveopt
-mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf -mno-prefetchwt1
-mno-clflushopt -mno-xsavec -mno-xsaves -mno-avx512dq -mno-avx512bw
-mno-avx512vl -mno-avx512ifma -mno-avx512vbmi -mno-avx5124fmaps
-mno-avx5124vnniw -mno-clwb -mno-mwaitx -mno-clzero -mno-pku -mno-rdpid
-mno-gfni -mno-shstk -mno-avx512vbmi2 -mno-avx512vnni -mno-vaes -mno-vpclmulqdq
-mno-avx512bitalg -mno-movdiri -mno-movdir64b --param l1-cache-size=32 --param
l1-cache-line-size=64 --param l2-cache-size=56320 -mtune=broadwell -quiet
-dumpbase ref_rnn.ii -mtune=core-avx2 -march=core-avx2 -auxbase ref_rnn -O3
-Wall -Wno-unknown-pragmas -Werror -Wformat=1 -Wformat-security
-Wmissing-field-initializers -Wno-strict-overflow -std=c++11 -version
-fvisibility-inlines-hidden -fvisibility=internal -fPIC
-fstack-protector-strong -fopenmp -o /tmp/ccYvBIFy.s
GNU C++11 (GCC) version 8.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++11 (GCC) version 8.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 70d646653fc51eb1ee1071a26be406d8
/nfs/pdx/home/rsdubtso/work/ml/mkl-dnn/mkl-dnn/src/cpu/rnn/ref_rnn.cpp: In
instantiation of ‘void mkldnn::impl::cpu::_ref_rnn_common_t<aprop, src_type,
weights_type>::copy_init_iter(const mkldnn::impl::cpu::rnn_utils::rnn_conf_t&,
mkldnn::impl::cpu::_ref_rnn_common_t<aprop, src_type,
weights_type>::src_data_t*, float*, float*, const input_data_t*, const float*)
const [with input_data_t = float; mkldnn_prop_kind_t aprop =
(mkldnn_prop_kind_t)128; mkldnn_data_type_t src_type = (mkldnn_data_type_t)1;
mkldnn_data_type_t weights_type = (mkldnn_data_type_t)1;
mkldnn::impl::cpu::_ref_rnn_common_t<aprop, src_type, weights_type>::src_data_t
= float]’:
/nfs/pdx/home/rsdubtso/work/ml/mkl-dnn/mkl-dnn/src/cpu/rnn/ref_rnn.cpp:726:9:
required from ‘void mkldnn::impl::cpu::_ref_rnn_common_t<aprop, src_type,
weights_type>::execute_(const mkldnn::impl::exec_ctx_t&) const [with
mkldnn_prop_kind_t aprop = (mkldnn_prop_kind_t)128; mkldnn_data_type_t src_type
= (mkldnn_data_type_t)1; mkldnn_data_type_t weights_type =
(mkldnn_data_type_t)1]’
/nfs/pdx/home/rsdubtso/work/ml/mkl-dnn/mkl-dnn/src/cpu/rnn/ref_rnn.cpp:763:17:
required from here
/nfs/pdx/home/rsdubtso/work/ml/mkl-dnn/mkl-dnn/src/cpu/rnn/ref_rnn.cpp:385:20:
internal compiler error: in type_dependent_expression_p, at cp/pt.c:25191
parallel_nd(rnn.n_layer, rnn.n_dir, rnn.n_states, rnn.mb,
~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[&](int lay, int dir, int state, int b) {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
array_copy(&(ws_diff_states(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lay, dir, state, rnn.n_iter, b, 0)),
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff_dst_iter_
~~~~~~~~~~~~~~
+ diff_dst_iter_d.blk_off(
~~~~~~~~~~~~~~~~~~~~~~~~~~
lay, dir, state, b),
~~~~~~~~~~~~~~~~~~~~
rnn.dic);
~~~~~~~~~
});
~~
0x58d918 type_dependent_expression_p(tree_node*)
../../gcc-8.3.0/gcc/cp/pt.c:25190
0x58d918 type_dependent_expression_p(tree_node*)
../../gcc-8.3.0/gcc/cp/pt.c:25029
0x6ab7c5 uses_template_parms(tree_node*)
../../gcc-8.3.0/gcc/cp/pt.c:10032
0x6b3eab tsubst_copy
../../gcc-8.3.0/gcc/cp/pt.c:15439
0x6bd700 tsubst_copy
../../gcc-8.3.0/gcc/cp/pt.c:18891
0x6bd700 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc-8.3.0/gcc/cp/pt.c:18891
0x6c61e3 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc-8.3.0/gcc/cp/pt.c:17591
0x6be6ef tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc-8.3.0/gcc/cp/pt.c:18971
0x6be1d1 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc-8.3.0/gcc/cp/pt.c:18313
0x6b17c2 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:17446
0x6b15a5 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16644
0x6b0e18 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16630
0x6b0d03 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16930
0x6b2167 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16900
0x6b0e18 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16630
0x6b0d03 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16930
0x6af988 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-8.3.0/gcc/cp/pt.c:16615
0x6af988 instantiate_decl(tree_node*, bool, bool)
../../gcc-8.3.0/gcc/cp/pt.c:24066
0x6cef73 instantiate_pending_templates(int)
../../gcc-8.3.0/gcc/cp/pt.c:24182
0x62eba8 c_parse_final_cleanups()
../../gcc-8.3.0/gcc/cp/decl2.c:4715
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-639302-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 07:23:46 2019
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Subject: [Bug c++/89900] [9 Regression] ICE: Segmentation fault (in check_instantiated_arg)
Date: Tue, 02 Apr 2019 07:23:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-04-02
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Known to work| |8.3.0
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r269965.
>From gcc-bugs-return-639303-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 07:28:52 2019
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Subject: [Bug ipa/89893] Segmentation fault always occurs when node app is generated by gcc-8-branch@268745
Date: Tue, 02 Apr 2019 07:28:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok, so I did a deeper analysis and it looks there's a violation of aliasing:
bool PerIsolatePlatformData::FlushForegroundTasksInternal() {
bool did_work = false;
while (std::unique_ptr<DelayedTask> delayed =
foreground_delayed_tasks_.Pop()) {
did_work = true;
uint64_t delay_millis =
static_cast<uint64_t>(delayed->timeout + 0.5) * 1000;
delayed->timer.data = static_cast<void*>(delayed.get());
uv_timer_init(loop_, &delayed->timer);
// Timers may not guarantee queue ordering of events with the same delay if
// the delay is non-zero. This should not be a problem in practice.
uv_timer_start(&delayed->timer, RunForegroundTask, delay_millis, 0);
uv_unref(reinterpret_cast<uv_handle_t*>(&delayed->timer)); <---- HERE
scheduled_delayed_tasks_.emplace_back(delayed.release(),
[](DelayedTask* delayed) {
uv_close(reinterpret_cast<uv_handle_t*>(&delayed->timer), <---- HERE
[](uv_handle_t* handle) {
delete static_cast<DelayedTask*>(handle->data);
});
});
}
// Move all foreground tasks into a separate queue and flush that queue.
// This way tasks that are posted while flushing the queue will be run on the
// next call of FlushForegroundTasksInternal.
std::queue<std::unique_ptr<Task>> tasks = foreground_tasks_.PopAll();
while (!tasks.empty()) {
std::unique_ptr<Task> task = std::move(tasks.front());
tasks.pop();
did_work = true;
RunForegroundTask(std::move(task));
}
return did_work;
}
Taking look at struct definition I see:
struct uv_handle_s {
void* data; uv_loop_t* loop; uv_handle_type type; uv_close_cb close_cb; void*
handle_queue[2]; union { int fd; void* reserved[4]; } u; uv_handle_t*
next_closing; unsigned int flags;
};
typedef struct uv_handle_s uv_handle_t;
typedef struct uv_timer_s uv_timer_t;
struct uv_timer_s {
void* data; uv_loop_t* loop; uv_handle_type type; uv_close_cb close_cb; void*
handle_queue[2]; union { int fd; void* reserved[4]; } u; uv_handle_t*
next_closing; unsigned int flags;
uv_timer_cb timer_cb; void* heap_node[3]; uint64_t timeout; uint64_t repeat;
uint64_t start_id;
};
When I use -fno-strict-aliasing, or when I mark uv_unref, then it's fine.
Similarly with -O2, the inling of uv_unref does not happen.
diff --git a/deps/uv/include/uv.h b/deps/uv/include/uv.h
index 717c2e5..6bb3985 100644
--- a/deps/uv/include/uv.h
+++ b/deps/uv/include/uv.h
@@ -283,7 +283,7 @@ UV_EXTERN int uv_run(uv_loop_t*, uv_run_mode mode);
UV_EXTERN void uv_stop(uv_loop_t*);
UV_EXTERN void uv_ref(uv_handle_t*);
-UV_EXTERN void uv_unref(uv_handle_t*);
+UV_EXTERN void __attribute__((noipa)) uv_unref(uv_handle_t*);
UV_EXTERN int uv_has_ref(const uv_handle_t*);
UV_EXTERN void uv_update_time(uv_loop_t*);
I'm going to create an upstream issue for it.
>From gcc-bugs-return-639304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 07:54:57 2019
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Subject: [Bug translation/89912] typo in params.def: scop
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-04-02
CC| |marxin at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Lemme fix it.
>From gcc-bugs-return-639305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 02 07:56:04 2019
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Subject: [Bug translation/89912] typo in params.def: scop
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Apr 2 07:55:30 2019
New Revision: 270076
URL: https://gcc.gnu.org/viewcvs?rev=270076&root=gcc&view=rev
Log:
Fix param description of graphite-max-arrays-per-scop (PR translation/89912).
2019-04-02 Martin Liska <mliska@suse.cz>
PR translation/89912
* params.def (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP):
Fix param description of graphite-max-arrays-per-scop.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/params.def
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Subject: [Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2
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--- Comment #18 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Do you think it would be possible to get this fix before the 9.1 release (see
the announcement by Richard B. yesterday/today)?
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[not found] <bug-86429-4@http.gcc.gnu.org/bugzilla/>
2019-03-25 19:20 ` [Bug c++/86429] [8/9 Regression] lambda capture breaks constexpr-ness jason at gcc dot gnu.org
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