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* [Bug c++/92560] ICE using decltype(x < y) when that operator uses operator<=>
[not found] <bug-92560-4@http.gcc.gnu.org/bugzilla/>
@ 2019-12-10 20:07 ` jason at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: jason at gcc dot gnu.org @ 2019-12-10 20:07 UTC (permalink / raw)
To: gcc-bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92560
--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Dec 10 20:06:58 2019
New Revision: 279183
URL: https://gcc.gnu.org/viewcvs?rev=279183&root=gcc&view=rev
Log:
PR c++/92560 - ICE with decltype and rewritten operator.
A call as the immediate operand of decltype is handled differently; we don't
create an object of the return type as we do normally. But in the case of a
rewritten operator, we're adding another call as a wrapper, so the inner
call doesn't get the special handling.
* call.c (build_new_op_1): Clear tf_decltype on inner call.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/spaceship-decltype1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/92801] Drop unused struct fields
Date: Tue, 10 Dec 2019 20:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92801
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=72789
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
It might be worth generalizing the -Wunused-private-field requested in bug
72789 to be just -Wunused-field if this optimization goes in
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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/92891] [10 Regression] ice in decompose, at wide-int.h:984
Date: Tue, 10 Dec 2019 20:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92891
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 #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 47466
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47466&action=edit
gcc10-pr92891.patch
Untested fix.
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Subject: =?UTF-8?B?W0J1ZyBjKysvOTI4NDddIFtDKysyMF0gYW1iaWd1b3VzIG92ZXJsb2FkIGZv?= =?UTF-8?B?ciDigJhvcGVyYXRvcj094oCZID8=?Date: Tue, 10 Dec 2019 20:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92847
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Dec 10 20:12:50 2019
New Revision: 279185
URL: https://gcc.gnu.org/viewcvs?rev=279185&root=gcc&view=rev
Log:
PR c++/92847 - C++20 comparison ambiguity with class template.
This testcase demonstrates that looking at cand->template_decl is not a good
starting place for finding the most general template, as it is only set for
primary templates.
* call.c (cand_parms_match): Handle all templated functions.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/spaceship-rewrite5.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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Subject: [Bug c++/92446] [C++20] template argument deduction fails for custom non-type parameters
Date: Tue, 10 Dec 2019 20:16:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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Subject: [Bug libstdc++/92895] [libstdc++] stop_token conformance issues
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug fortran/89069] ICE in select type with function returning class array pointer
Date: Tue, 10 Dec 2019 20:28:00 -0000
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G. Steinmetz <gscfq@t-online.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gscfq@t-online.de
--- Comment #2 from G. Steinmetz <gscfq@t-online.de> ---
Update :
$ cat z1.f90
program p
select type (y => f())
end select
contains
function f()
class(*), pointer :: f(:)
end
end
$ cat z2.f90
program p
select type (y => f())
end select
contains
function f()
class(*), allocatable :: f(:)
end
end
$ gfortran-10-20191208 -c z2.f90
f951: internal compiler error: Segmentation fault
0xb800af crash_signal
../../gcc/toplev.c:328
0x6a7c28 resolve_select_type
../../gcc/fortran/resolve.c:9158
0x698564 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11897
0x69a0d7 resolve_codes
../../gcc/fortran/resolve.c:17186
0x69a19e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:17221
0x68859c resolve_all_program_units
../../gcc/fortran/parse.c:6241
0x68859c gfc_parse_file()
../../gcc/fortran/parse.c:6488
0x6d306f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:210
---
Similar with associate :
$ cat z4.f90
program p
associate (y => f())
end associate
contains
function f()
class(*), pointer :: f(:)
end
end
$ cat z5.f90
program p
associate (y => f())
end associate
contains
function f()
class(*), allocatable :: f(:)
end
end
$ gfortran-10-20191208 -c z5.f90
z5.f90:2:0:
2 | associate (y => f())
|
internal compiler error: Segmentation fault
0xd05dff crash_signal
../../gcc/toplev.c:328
0x744fbc gfc_class_data_get(tree_node*)
../../gcc/fortran/trans-expr.c:189
0x7a03fd trans_associate_var
../../gcc/fortran/trans-stmt.c:2015
0x7a6099 gfc_trans_block_construct(gfc_code*)
../../gcc/fortran/trans-stmt.c:2283
0x709cd7 trans_code
../../gcc/fortran/trans.c:1960
0x74107d gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6801
0x6bafe6 translate_all_program_units
../../gcc/fortran/parse.c:6302
0x6bafe6 gfc_parse_file()
../../gcc/fortran/parse.c:6541
0x705fcf gfc_be_parse_file
../../gcc/fortran/f95-lang.c:210
---
And finally, above four variants do compile with scalar items, e.g. :
$ cat za1.f90
program p
select type (y => f())
end select
contains
function f()
class(*), pointer :: f
end
end
$ gfortran-10-20191208 -c za1.f90
$
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Subject: [Bug fortran/92896] [10 Regression] ICE in reduce_unary, at fortran/arith.c:1283
Date: Tue, 10 Dec 2019 20:31:00 -0000
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--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---
With a plain array constructor :
$ cat z2.f90
program p
print *, [integer :: 1, [integer(8) :: '2']]
end
$ gfortran-10-20191208 -c z2.f90 -fdec -fno-range-check
$ gfortran-10-20191208 -c z2.f90 -fdec
z2.f90:2:41:
2 | print *, [integer :: 1, [integer(8) :: '2']]
| 1
Error: Arithmetic overflow converting INTEGER(8) to INTEGER(4) at (1). This
check can be disabled with the option '-fno-range-check'
z2.f90:2:41:
2 | print *, [integer :: 1, [integer(8) :: '2']]
| 1
Error: Arithmetic overflow converting INTEGER(8) to INTEGER(4) at (1). This
check can be disabled with the option '-fno-range-check'
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Subject: [Bug fortran/92896] New: [10 Regression] ICE in reduce_unary, at fortran/arith.c:1283
Date: Tue, 10 Dec 2019 20:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92896
Bug ID: 92896
Summary: [10 Regression] ICE in reduce_unary, at
fortran/arith.c:1283
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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A legacy extension changed between 20191103 and 20191110 :
$ cat z1.f90
program p
print *, -[integer :: 1, [integer(8) :: '2']]
end
$ cat z7.f90
program p
print *, +[integer :: 1, [integer(8) :: '2']]
print *, 1-[integer :: 1, [integer(8) :: '2']]
print *, 1*[integer :: 1, [integer(8) :: '2']]
print *, [integer :: 1, [integer(8) :: '2']]/2
!...
end
$ gfortran-10-20191103 -c z1.f90 -fdec
z1.f90:2:42:
2 | print *, -[integer :: 1, [integer(8) :: '2']]
| 1
Error: Cannot convert CHARACTER(1) to INTEGER(8) at (1)
$
$ gfortran-10-20191208 -c z1.f90 -fdec -fno-range-check
$
$ gfortran-10-20191208 -c z1.f90 -fdec
f951: internal compiler error: Segmentation fault
0xd05dff crash_signal
../../gcc/toplev.c:328
0x62791b reduce_unary
../../gcc/fortran/arith.c:1283
0x6278ef reduce_unary
../../gcc/fortran/arith.c:1270
0x62813f eval_intrinsic
../../gcc/fortran/arith.c:1609
0x696b64 match_level_2
../../gcc/fortran/matchexp.c:490
0x696b82 match_level_3
../../gcc/fortran/matchexp.c:551
0x696c74 match_level_4
../../gcc/fortran/matchexp.c:599
0x696c74 match_and_operand
../../gcc/fortran/matchexp.c:693
0x696e62 match_or_operand
../../gcc/fortran/matchexp.c:722
0x696f32 match_equiv_operand
../../gcc/fortran/matchexp.c:765
0x697004 match_level_5
../../gcc/fortran/matchexp.c:811
0x6963e1 gfc_match_expr(gfc_expr**)
../../gcc/fortran/matchexp.c:870
0x67dd39 match_io_element
../../gcc/fortran/io.c:3729
0x6806c5 match_io_list
../../gcc/fortran/io.c:3777
0x680ad4 match_io
../../gcc/fortran/io.c:4476
0x6847fa gfc_match_print()
../../gcc/fortran/io.c:4533
0x6b0051 match_word
../../gcc/fortran/parse.c:65
0x6b49e3 decode_statement
../../gcc/fortran/parse.c:537
0x6b4e1a next_free
../../gcc/fortran/parse.c:1279
0x6b4e1a next_statement
../../gcc/fortran/parse.c:1511
>From gcc-bugs-return-662985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 20:33:29 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 tree-optimization/92891] [10 Regression] ice in decompose, at wide-int.h:984
Date: Tue, 10 Dec 2019 20:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92891
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Some offsets are narrower than others but sizes returned either by
compute_objsize() or by compute_builtin_object_size() should always be
sizetype. The wide_int APIs helpful abort when their arguments don't have the
same precision. I fixed a bunch of problems of this kind before committing the
patch by making sure that sizes are all sizetype and converting offsets to the
same precision, but clearly not all of them.
I have this change in my local copy:
@@ -3826,8 +3827,14 @@ compute_objsize (tree dest, int ostype, tree *pdecl /* =
NULL */,
if (is_gimple_call (stmt))
{
/* If STMT is a call to an allocation function get the size
- from its argument(s). */
- return gimple_call_alloc_size (stmt);
+ from its argument(s). If successful, also set *PDECL to
+ DEST for the caller to include in diagnostics. */
+ if (tree size = gimple_call_alloc_size (stmt))
+ {
+ *pdecl = dest;
+ return fold_convert (sizetype, size);
+ }
+ return NULL_TREE;
}
if (!is_gimple_assign (stmt))
>From gcc-bugs-return-662986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 20:34:27 2019
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Subject: [Bug fortran/92897] New: [9/10 Regression] ICE in gfc_set_array_spec, at fortran/array.c:864
Date: Tue, 10 Dec 2019 20:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92897
Bug ID: 92897
Summary: [9/10 Regression] ICE in gfc_set_array_spec, at
fortran/array.c:864
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Changed between 20190922 and 20190929 :
$ cat z1.f90
type(t) function f()
dimension :: t(1,2,1,2,1,2,1,2)
codimension :: t[1,2,1,2,1,2,1,*]
end
$ gfortran-10-20190922 -c z1.f90 -fcoarray=single
z1.f90:1:7:
1 | type(t) function f()
| 1
Error: Derived type 't' at (1) has not been declared
z1.f90:1:18:
1 | type(t) function f()
| 1
Error: The derived type 'f' at (1) is of type 't', which has not been defined
$ gfortran-10-20191208 -c z1.f90 -fcoarray=single
f951: internal compiler error: in gfc_set_array_spec, at fortran/array.c:864
0x5fb3ef gfc_set_array_spec(gfc_symbol*, gfc_array_spec*, locus*)
../../gcc/fortran/array.c:864
0x6141eb attr_decl1
../../gcc/fortran/decl.c:8532
0x6141eb attr_decl
../../gcc/fortran/decl.c:8584
0x67dc51 match_word
../../gcc/fortran/parse.c:65
0x6820b4 decode_statement
../../gcc/fortran/parse.c:464
0x682a1a next_free
../../gcc/fortran/parse.c:1279
0x682a1a next_statement
../../gcc/fortran/parse.c:1511
0x68414d parse_spec
../../gcc/fortran/parse.c:3938
0x686e3c parse_progunit
../../gcc/fortran/parse.c:5848
0x688861 gfc_parse_file()
../../gcc/fortran/parse.c:6402
0x6d306f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:210
>From gcc-bugs-return-662987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 20:36:58 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/92898] New: [9/10 Regression] ICE in gfc_check_is_contiguous, at fortran/check.c:7157
Date: Tue, 10 Dec 2019 20:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92898
Bug ID: 92898
Summary: [9/10 Regression] ICE in gfc_check_is_contiguous, at
fortran/check.c:7157
Product: gcc
Version: 10.0
Status: UNCONFIRMED
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Priority: P3
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This changed between 20190922 and 20190929.
$ cat z1.f90
program p
print *, is_contiguous(null())
end
$ gfortran-10-20190922 -c z1.f90
z1.f90:2:26:
2 | print *, is_contiguous(null())
| 1
Error: 'array' argument of 'is_contiguous' intrinsic at (1) must be an array
$ gfortran-10-20191208 -c z1.f90
f951: internal compiler error: Segmentation fault
0xb800af crash_signal
../../gcc/toplev.c:328
0x608ac9 gfc_check_is_contiguous(gfc_expr*)
../../gcc/fortran/check.c:7157
0x64033c do_check
../../gcc/fortran/intrinsic.c:4698
0x64033c check_specific
../../gcc/fortran/intrinsic.c:4711
0x64a5e4 gfc_intrinsic_func_interface(gfc_expr*, int)
../../gcc/fortran/intrinsic.c:4948
0x6a162b resolve_unknown_f
../../gcc/fortran/resolve.c:2894
0x6a162b resolve_function
../../gcc/fortran/resolve.c:3231
0x6a162b gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6999
0x698b2c gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6966
0x698b2c gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11670
0x6a793f gfc_resolve_blocks(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:10697
0x697858 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11660
0x69a0d7 resolve_codes
../../gcc/fortran/resolve.c:17186
0x69a19e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:17221
0x68859c resolve_all_program_units
../../gcc/fortran/parse.c:6241
0x68859c gfc_parse_file()
../../gcc/fortran/parse.c:6488
0x6d306f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:210
>From gcc-bugs-return-662988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 20:42:04 2019
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Subject: [Bug fortran/92899] New: ICE in gfc_trans_omp_atomic, at fortran/trans-openmp.c:3769
Date: Tue, 10 Dec 2019 20:42:00 -0000
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Bug ID: 92899
Summary: ICE in gfc_trans_omp_atomic, at
fortran/trans-openmp.c:3769
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
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An old issue, ICEs down to version 5, 4.9 seems to be ok :
$ cat z1.f90
program p
real :: x = 1.0
double precision :: y
!$omp atomic capture
y = x
x = 2.0
!$omp end atomic
end
$ gfortran-10-20191208 -c z1.f90 -fopenmp
z1.f90:4:0:
4 | !$omp atomic capture
|
internal compiler error: in gfc_trans_omp_atomic, at
fortran/trans-openmp.c:3769
0x78a409 gfc_trans_omp_atomic
../../gcc/fortran/trans-openmp.c:3769
0x79a29f gfc_trans_omp_directive(gfc_code*)
../../gcc/fortran/trans-openmp.c:5511
0x709d77 trans_code
../../gcc/fortran/trans.c:2139
0x74107d gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6801
0x6bafe6 translate_all_program_units
../../gcc/fortran/parse.c:6302
0x6bafe6 gfc_parse_file()
../../gcc/fortran/parse.c:6541
0x705fcf gfc_be_parse_file
../../gcc/fortran/f95-lang.c:210
>From gcc-bugs-return-662990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 20:45:35 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/92859] compiler treats enum type as an integer during overload resolution when a bit-field of this enum is considered
Date: Tue, 10 Dec 2019 20:45:00 -0000
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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-662989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 20:45:00 2019
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Subject: [Bug fortran/89047] [OpenACC] ICE in mark_scope_block_unused, at tree-ssa-live.c:391
Date: Tue, 10 Dec 2019 20:45:00 -0000
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--- Comment #4 from G. Steinmetz <gscfq@t-online.de> ---
Where does this line come from ?
> 18 | c = g
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Subject: =?UTF-8?B?W0J1ZyBjKysvOTI4NDddIFtDKysyMF0gYW1iaWd1b3VzIG92ZXJsb2FkIGZv?= =?UTF-8?B?ciDigJhvcGVyYXRvcj094oCZID8=?Date: Tue, 10 Dec 2019 20:50:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/91643] [10 Regression] ICE in gfc_trans_create_temp_array, at fortran/trans-array.c:1265
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Subject: [Bug middle-end/92825] Unnecesary stack protection in Firefox's LightPixel.
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 10 21:04:08 2019
New Revision: 279193
URL: https://gcc.gnu.org/viewcvs?rev=279193&root=gcc&view=rev
Log:
PR middle-end/92825
* cfgexpand.c (add_stack_protection_conflicts): Change return type
from void to bool, return true if at least one stack_vars[i].decl
is addressable.
(record_or_union_type_has_array_p, stack_protect_decl_p): Remove.
(expand_used_vars): Don't call stack_protect_decl_p, instead for
-fstack-protector-strong set gen_stack_protect_signal to true
if add_stack_protection_conflicts returned true. Formatting fixes.
* doc/invoke.texi (-fstack-protector-strong): Clarify that optimized
out variables or variables not living on the stack don't count.
(-fstack-protector): Likewise. Clarify it affects >= 8 byte arrays
rather than > 8 byte.
* gcc.target/i386/pr92825.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr92825.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
trunk/gcc/doc/invoke.texi
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/92883] [10 Regression] ICE in compare_values_warnv
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 10 21:04:57 2019
New Revision: 279194
URL: https://gcc.gnu.org/viewcvs?rev=279194&root=gcc&view=rev
Log:
PR ipa/92883
* ipa-cp.c (propagate_vr_across_jump_function): Pass jvr rather
than *jfunc->m_vr to intersect. Formatting fix.
* gcc.dg/ipa/pr92883.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/ipa/pr92883.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-cp.c
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Subject: [Bug c++/92774] ICE with defaulted three-way comparison function
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Subject: [Bug rtl-optimization/92882] [10 Regression] ICE in regstat_bb_compute_calls_crossed, at regstat.c:327 since r279124
Date: Tue, 10 Dec 2019 21:06:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 10 21:05:59 2019
New Revision: 279196
URL: https://gcc.gnu.org/viewcvs?rev=279196&root=gcc&view=rev
Log:
PR rtl-optimization/92882
* regstat.c (regstat_bb_compute_calls_crossed): Don't check
INSN_UID against DF_INSN_SIZE or use DF_INSN_INFO_GET unless
NONDEBUG_INSN_P.
* gfortran.dg/pr92882.f: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr92882.f
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regstat.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89047] [OpenACC] ICE in mark_scope_block_unused, at tree-ssa-live.c:391
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to G. Steinmetz from comment #4)
> Where does this line come from ?
> > 18 | c = g
Nowhere (as fas as this PR is concerned). Different test case,
please disregard comment #3.
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From: "tdiff at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/92900] New: Cannot use member of packed struct in constexpr
Date: Tue, 10 Dec 2019 21:14:00 -0000
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Bug ID: 92900
Summary: Cannot use member of packed struct in constexpr
Product: gcc
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Following program generates an error for a struct packed with
__attribute__((packed)) but not with #pragma pack(1)
Compiled as
g++ -O2 -std=c++17 -Wall -Wextra -Wpedantic -Wstrict-aliasing -fstrict-aliasing
Error: the value of 's2' is not usable in a constant expression
27 | constexpr auto sz2 = std::size(s2.i);
Web compiler:
https://godbolt.org/z/h-7i4p
#include <iterator>
#pragma pack(1)
struct S1
{
int i[10];
}
;
#pragma pack()
struct S2
{
int i[10];
}
__attribute__((packed)) // comment this to make it compile
;
#define LEN(a) (sizeof(a) / sizeof(a[0]));
void f()
{
S1 s1{};
constexpr auto sz1 = std::size(s1.i);
(void)sz1;
S2 s2{};
constexpr auto sz2 = std::size(s2.i);
(void)sz2;
constexpr auto sz3 = LEN(s2.i);
(void)sz3;
}
>From gcc-bugs-return-662999-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 21:20:13 2019
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Subject: [Bug fortran/92898] [9/10 Regression] ICE in gfc_check_is_contiguous, at fortran/check.c:7157
Date: Tue, 10 Dec 2019 21:20:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-12-10
CC| |anlauf at gcc dot gnu.org
Target Milestone|--- |9.3
Ever confirmed|0 |1
--- Comment #1 from anlauf at gcc dot gnu.org ---
The code in question in gfc_check_is_contiguous was added by Steve Kargl
in rev.276272.
>From gcc-bugs-return-663000-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 21:31:19 2019
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Subject: [Bug fortran/92898] [9/10 Regression] ICE in gfc_check_is_contiguous, at fortran/check.c:7157
Date: Tue, 10 Dec 2019 21:31:00 -0000
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--- Comment #2 from anlauf at gcc dot gnu.org ---
The code added in r276272 checks for closely related invalid code.
The following patch might fix the ICE:
Index: gcc/fortran/check.c
===================================================================
--- gcc/fortran/check.c (Revision 279183)
+++ gcc/fortran/check.c (Arbeitskopie)
@@ -7154,7 +7154,9 @@ bool
gfc_check_is_contiguous (gfc_expr *array)
{
if (array->expr_type == EXPR_NULL
- && array->symtree->n.sym->attr.pointer == 1)
+ && (!array->symtree ||
+ (array->symtree->n.sym &&
+ array->symtree->n.sym->attr.pointer == 1)))
{
gfc_error ("Actual argument at %L of %qs intrinsic shall be an "
"associated pointer", &array->where, gfc_current_intrinsic);
>From gcc-bugs-return-663001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 21:34:31 2019
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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-663002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 21:59:45 2019
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Subject: [Bug fortran/91643] [10 Regression] ICE in gfc_trans_create_temp_array, at fortran/trans-array.c:1265
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--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Dec 10 21:59:09 2019
New Revision: 279203
URL: https://gcc.gnu.org/viewcvs?rev=279203&root=gcc&view=rev
Log:
2019-12-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/91643
* trans-array.c (gfc_conv_array_parameter): Do not repack
an assumed rank dummy argument.
2019-12-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/91643
* gfortran.dg/assumed_rank_18.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/assumed_rank_18.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-array.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-663003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:01:48 2019
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Subject: [Bug fortran/91643] [10 Regression] ICE in gfc_trans_create_temp_array, at fortran/trans-array.c:1265
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed. Thanks a lot for this bug report, and for the very many
others that you find.
>From gcc-bugs-return-663004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:08:35 2019
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Subject: [Bug rtl-optimization/92796] [10 Regression] ICE in lra_assign, at lra-assigns.c:1646 on powerpc64le-linux-gnu
Date: Tue, 10 Dec 2019 22:08:00 -0000
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--- Comment #11 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Tue Dec 10 22:07:57 2019
New Revision: 279204
URL: https://gcc.gnu.org/viewcvs?rev=279204&root=gcc&view=rev
Log:
2019-12-10 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/92796
* lra-int.h (lra_risky_transformations_p): Rename to
check_and_force_assignment_correctness_p.
* lra-assigns.c: Ditto.
(lra_assign): Reset check_and_force_assignment_correctness_p.
* lra-constraints.c (lra_risky_transformations_p): Rename to
check_and_force_assignment_correctness_p.
(lra_constraints): Set up check_and_force_assignment_correctness_p
only for the 1st sub-pass.
* lra-eliminations.c (process_insn_for_elimination): Set up
check_and_force_assignment_correctness_p if the insn chnaged its
code.
2019-12-10 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/92796
* gcc.target/powerpc/pr92796.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/pr92796.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-assigns.c
trunk/gcc/lra-constraints.c
trunk/gcc/lra-eliminations.c
trunk/gcc/lra-int.h
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-663005-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:22:30 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/92901] New: new test case c-c++-common/goacc/clause-locations.c in r279169 fails
Date: Tue, 10 Dec 2019 22:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92901
Bug ID: 92901
Summary: new test case c-c++-common/goacc/clause-locations.c in
r279169 fails
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
FAIL: c-c++-common/goacc/clause-locations.c -std=c++98 (test for warnings,
line 12)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++98 (test for excess
errors)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++14 (test for warnings,
line 12)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++14 (test for excess
errors)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++17 (test for warnings,
line 12)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++17 (test for excess
errors)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++2a (test for warnings,
line 12)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++2a (test for excess
errors)
details on one:
Executing on host: /home/seurer/gcc/build/gcc-test/gcc/testsuite/g++/../../xg++
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/g++/../../
/home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/goacc/clause-locations.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -fdiagnostics-urls=never -nostdinc++
-I/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/powerpc64le-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-test/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-test/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-test/libstdc++-v3/testsuite/util -fmessage-length=0
-std=c++98 -fopenacc -S -o clause-locations.s (timeout = 300)
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-test/gcc/testsuite/g++/../../xg++
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/g++/../../
/home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/goacc/clause-locations.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -fdiagnostics-urls=never -nostdinc++
-I/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/powerpc64le-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-test/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-test/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-test/libstdc++-v3/testsuite/util -fmessage-length=0
-std=c++98 -fopenacc -S -o clause-locations.s
/home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/goacc/clause-locations.c:
In function 'void check_clause_columns()':
/home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/goacc/clause-locations.c:12:56:
warning: conflicting reduction operations for 'sum'
/home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/goacc/clause-locations.c:9:34:
note: location of the previous reduction for 'sum'
FAIL: c-c++-common/goacc/clause-locations.c -std=c++98 (test for warnings,
line 12)
FAIL: c-c++-common/goacc/clause-locations.c -std=c++98 (test for excess
errors)
Excess errors:
/home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/goacc/clause-locations.c:12:56:
warning: conflicting reduction operations for 'sum'
Note that the C version of the tests works OK. Just the C++ ones fail.
>From gcc-bugs-return-663006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:45:46 2019
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Subject: [Bug c/92902] New: gcc 9.2 puts "jump tables" in the .text section
Date: Tue, 10 Dec 2019 22:45:00 -0000
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Bug ID: 92902
Summary: gcc 9.2 puts "jump tables" in the .text section
Product: gcc
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gcc 9.2 (and maybe other versions) is putting jump table directly in the text
section.
On most processors I guess this is not an issue as the text section is usually
readable.
But on some processors like (like the SPARC processor) this is an issue when
user space text section is protected (from the OS) with an "eXecute Only" MMU
protection.
In such case when the code is trying to read the jump table from the text
section, a data abort exception is generated and the all application is
crashed.
To work around the problem I have to either:
* change the protection (from the OS) on the text segment to "Read and eXecute"
* compile with the -fno-jump-table command line option.
These 2 work arroud allow the application code (that use to work OK on gcc 8
and gcc 7) to run again when comiled with gcc 9
I believe the jump_table should go in the ro_data section. Putting them in the
text section seems wrong. A jump table is data after all.
Another solution is to avoid generating "jump tables" on
processors/architecture that could put "eXecute Only" MMU protection on text
segments.
On SPARC/LEON there is also the -muser_mode command line option that could be
used to avoid generating jump tables if it is not possible to move them in the
ro_data section.
>From gcc-bugs-return-663007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:49:06 2019
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Subject: [Bug target/92902] gcc 9.2 puts "jump tables" in the .text section
Date: Tue, 10 Dec 2019 22:49:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is a target specific issue. That is each target decides where to put the
jump table. On some targets, it is already done not in the text section but
the rodata section. It seems like sparc is not one of those. the SPARC
back-end does not get much attention these days as oracle has moved away from
sparc really.
>From gcc-bugs-return-663008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:57:48 2019
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Subject: [Bug c/92903] New: Cannot elide byteswap when only needed to compare to multiple constants
Date: Tue, 10 Dec 2019 22:57:00 -0000
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Bug ID: 92903
Summary: Cannot elide byteswap when only needed to compare to
multiple constants
Product: gcc
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I compiled the following test code on GCC 8.3.0:
int test(int a)
{
const int swapped = __builtin_bswap32(a);
if (swapped == 0x12345678 || swapped == 0x23456789)
return 1;
return 0;
}
On x86_64, I get:
0000000000000000 <test> (File Offset: 0x40):
0: 0f cf bswap %edi
2: 81 ff 78 56 34 12 cmp $0x12345678,%edi
8: 0f 94 c0 sete %al
b: 81 ff 89 67 45 23 cmp $0x23456789,%edi
11: 0f 94 c2 sete %dl
14: 09 d0 or %edx,%eax
16: 0f b6 c0 movzbl %al,%eax
19: c3 retq
And on aarch64, I get:
0000000000000000 <test> (File Offset: 0x40):
0: 528acf01 mov w1, #0x5678 // #22136
4: 5ac00800 rev w0, w0
8: 72a24681 movk w1, #0x1234, lsl #16
c: 6b01001f cmp w0, w1
10: 528cf121 mov w1, #0x6789 // #26505
14: 72a468a1 movk w1, #0x2345, lsl #16
18: 7a411004 ccmp w0, w1, #0x4, ne
1c: 1a9f17e0 cset w0, eq
20: d65f03c0 ret
In both of those cases it would have been better to omit the byteswap
instruction and instead embed the constants to compare to in their swapped form
right away. This works correctly when comparing to a single constant, like
this:
int test(int a)
{
const int swapped = __builtin_bswap32(a);
if (swapped == 0x12345678)
return 1;
return 0;
}
0000000000000000 <test> (File Offset: 0x40):
0: 52868241 mov w1, #0x3412 // #13330
4: 72af0ac1 movk w1, #0x7856, lsl #16
8: 6b01001f cmp w0, w1
c: 1a9f17e0 cset w0, eq
10: d65f03c0 ret
But comparing the swapped value to more than one constant somehow makes GCC
miss this optimization, even if neither the swapped value nor the constants are
used for anything else.
>From gcc-bugs-return-663009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 22:59:23 2019
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Subject: [Bug tree-optimization/92903] Cannot elide byteswap when only needed to compare to multiple constants
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----------------------------------------------------------------------------
Keywords| |missed-optimization
Component|c |tree-optimization
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Subject: [Bug tree-optimization/92903] Cannot elide byteswap when only needed to compare to multiple constants
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--- Comment #1 from Julius Werner <jwerner at chromium dot org> ---
For reference, clang 10.0.0 manages to do this optimization correctly:
0000000000000000 <test> (File Offset: 0x40):
0: b8 01 00 00 00 mov $0x1,%eax
5: 81 ff 23 45 67 89 cmp $0x89674523,%edi
b: 74 08 je 15 <test+0x15> (File Offset: 0x55)
d: 81 ff 12 34 56 78 cmp $0x78563412,%edi
13: 75 01 jne 16 <test+0x16> (File Offset: 0x56)
15: c3 retq
16: 31 c0 xor %eax,%eax
18: c3 retq
>From gcc-bugs-return-663011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 23:02:35 2019
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Subject: [Bug tree-optimization/92903] Cannot elide byteswap when only needed to compare to multiple constants
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So currently this optimization is only done at the RTL level so most likely in
combine which means only use var are used still.
>From gcc-bugs-return-663012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 23:02:59 2019
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Subject: [Bug tree-optimization/92903] Cannot elide byteswap when only needed to compare to multiple constants
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There are a lot of bswap optimizations missing I think.
>From gcc-bugs-return-663013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 10 23:15:37 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92105
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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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/92891] [10 Regression] ice in decompose, at wide-int.h:984
Date: Tue, 10 Dec 2019 23:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92891
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 10 23:49:40 2019
New Revision: 279205
URL: https://gcc.gnu.org/viewcvs?rev=279205&root=gcc&view=rev
Log:
PR tree-optimization/92891
* builtins.c (gimple_call_alloc_size): Convert size to sizetype
before returning it.
* gcc.c-torture/compile/pr92891.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr92891.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/92900] Cannot use member of packed struct in constexpr
Date: Tue, 10 Dec 2019 23:52:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=60972
Blocks| |55004
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
possibly related to bug 60972
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004
[Bug 55004] [meta-bug] constexpr issues
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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++/92893] [10 Regression] Unhelpful -Wstringop-overflow warning for a trailing one-element array
Date: Wed, 11 Dec 2019 00:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92893
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.1.0
Summary|Unhelpful |[10 Regression] Unhelpful
|-Wstringop-overflow warning |-Wstringop-overflow warning
| |for a trailing one-element
| |array
Known to fail| |10.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning first appeared with r273783:
r273783 | msebor | 2019-07-24 20:29:17 -0400 (Wed, 24 Jul 2019) | 27 lines
PR tree-optimization/91183 - strlen of a strcpy result with a conditional
source not folded
PR tree-optimization/86688 - missing -Wstringop-overflow using a non-string
local array in strnlen with excessive bound
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From: "jesse.huard at dellteam dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/92904] New: GCC generates movdqa instructions to unaligned memory
Date: Wed, 11 Dec 2019 00:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92904
Bug ID: 92904
Summary: GCC generates movdqa instructions to unaligned memory
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jesse.huard at dellteam dot com
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Created attachment 47467
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47467&action=edit
Preprocessed test source file for reproducing the issue.
Compiling the attached test program on x86_64 with optimisations enabled
produces code which segfaults in a movdqa instruction accessing unaligned
memory. This was observed in code which passes an unsigned __int128 as a
variadic function argument when we attempt to retrieve the argument with
va_arg().
movdqa is expecting a 16-byte aligned memory location, but instead we get an
unaligned address on the stack pointing to our variadic argument within the
va_list's reg_save_area. This results in a segmentation fault.
12 b = va_arg(args, unsigned __int128);
0x000055555555517b <+50>: movl $0x18,(%rsp)
=> 0x0000555555555182 <+57>: movdqa 0x28(%rsp),%xmm0 # segfault
here!
0x0000555555555188 <+63>: movaps %xmm0,0x2ec1(%rip) #
0x555555558050 <b>
(gdb) p $rsp+0x28
$1 = (void *) 0x7fffffffe2d8
(gdb) p args
$2 = {{gp_offset = 24, fp_offset = 0, overflow_arg_area = 0x7fffffffe310,
reg_save_area = 0x7fffffffe2d0}}
Compiler invocation:
gcc -g -O1 test.c -o test
GCC information:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-shared
--enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch
--disable-libssp --enable-gnu-unique-object --enable-linker-build-id
--enable-lto --enable-plugin --enable-install-libiberty
--with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib
--disable-werror --enable-checking=release --enable-default-pie
--enable-default-ssp --enable-cet=auto gdc_include_dir=/usr/include/dlang/gdc
Thread model: posix
gcc version 9.2.0 (GCC)
libc information:
$ /usr/lib/libc.so.6
GNU C Library (GNU libc) stable release version 2.30.
Copyright (C) 2019 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.
Compiled by GNU CC version 9.2.0.
libc ABIs: UNIQUE IFUNC ABSOLUTE
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Subject: [Bug target/92904] GCC generates movdqa instructions to unaligned memory
Date: Wed, 11 Dec 2019 00:49:00 -0000
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--- Comment #1 from Jesse Huard <jesse.huard at dellteam dot com> ---
Created attachment 47468
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47468&action=edit
Original test source file.
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From: "jporter at mozilla dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/65308] [C++14] auto-returning function template used inside function template doesn't allow template members to be called
Date: Wed, 11 Dec 2019 04:37:00 -0000
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--- Comment #3 from Jim Porter <jporter at mozilla dot com> ---
Testing via godbolt, this is working as of gcc 7.2.
Not sure if I should mark this resolved myself or wait for a GCC person to
confirm...
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/79221] missing -Wstringop-overflow= on a strcat overflow
Date: Wed, 11 Dec 2019 05:20:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #0)
> Similar to bug 79220, the -Wstringop-overflow option diagnoses the buffer
> overflow in the call to strcat in f() in the program below but fails to do
> the same for the strcat() overflow in g(). As in the referenced bug, GCC
> transforms the second strcat() to an assignment followed by a call to
> memcpy, defeating the overflow detection. GCC should avoid this
> transformation when the destination isn't big enough for the copy.
>
> I expect this bug will be resolved by a comprehensive fix for bug 79220
bug 79220 was fixed... was the fix for it comprehensive enough?
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Subject: [Bug c++/68160] Can bind packed field if it's packed with #pragma pack(push, 1)
Date: Wed, 11 Dec 2019 05:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68160
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=92900
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> Confirmed. I think this is related to bug 60972.
...and bug 92900 as well.
>From gcc-bugs-return-663022-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 11 05:32:28 2019
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Subject: [Bug middle-end/77433] warn about usage of object that outside of the scope of the object
Date: Wed, 11 Dec 2019 05:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77433
--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
This might be material for David Malcolm's new static analyzer
>From gcc-bugs-return-663023-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 11 07:04:21 2019
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Subject: [Bug fortran/90350] ubound ICE on assumed size array even though explicit bound is specified
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90350
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> ---
arr(:n) is an array slice, so the upper bound is equal to size(arr(1:n)).
>From gcc-bugs-return-663024-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 11 07:26:50 2019
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From: Devin <garefull@yeah.net>
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Subject: high quality Bluetooth selfie stick
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dear distributor
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2019-12-10 20:07 ` [Bug c++/92560] ICE using decltype(x < y) when that operator uses operator<=> jason at gcc dot gnu.org
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