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* [Bug driver/78863] [6/7 Regression] error on -fsanitize suggests invalid -fsanitize=all
[not found] <bug-78863-4@http.gcc.gnu.org/bugzilla/>
@ 2016-12-20 14:27 ` marxin at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: marxin at gcc dot gnu.org @ 2016-12-20 14:27 UTC (permalink / raw)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78863
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40381
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40381&action=edit
Untested patch
>From gcc-bugs-return-548337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 14:32:18 2016
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78861] sequencer.cpp:603:53: error: cannot convert 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' to 'bool' in assignment
Date: Tue, 20 Dec 2016 14:32:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, that will convert the stream to a bool then try to bitshift it.
It should be:
result = bool( iss >> t.duration >> t.width );
>From gcc-bugs-return-548338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 14:35:07 2016
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Subject: [Bug c++/78861] sequencer.cpp:603:53: error: cannot convert 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' to 'bool' in assignment
Date: Tue, 20 Dec 2016 14:35:00 -0000
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--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #4)
> No, that will convert the stream to a bool then try to bitshift it.
>
> It should be:
>
> result = bool( iss >> t.duration >> t.width );
Yeah, sorry.
>From gcc-bugs-return-548339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 14:38:52 2016
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Subject: [Bug rtl-optimization/71724] [5/6/7 Regression] ICE: Segmentation fault, deep recursion between combine_simplify_rtx and subst
Date: Tue, 20 Dec 2016 14:38:00 -0000
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Bernd Schmidt <bernds at gcc dot gnu.org> changed:
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--- Comment #3 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Looks like if_then_else_cond manages to return a false_rtx identical to the
original one, and we try to simplify it again.
>From gcc-bugs-return-548340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 14:52:50 2016
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From: "martin.gansser at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78861] sequencer.cpp:603:53: error: cannot convert 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' to 'bool' in assignment
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--- Comment #6 from mgansser at alice dot de <martin.gansser at gmail dot com> ---
(In reply to Markus Trippelsdorf from comment #5)
> (In reply to Jonathan Wakely from comment #4)
> > No, that will convert the stream to a bool then try to bitshift it.
> >
> > It should be:
> >
> > result = bool( iss >> t.duration >> t.width );
>
> Yeah, sorry.
fine, compiles now w/o problems.
Danke
>From gcc-bugs-return-548341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 15:04:50 2016
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Subject: [Bug target/78660] [7 Regression] 7.0 bootstrap fail on mips64el-unknow-linux: configure-stage2-target-libgcc' failed
Date: Tue, 20 Dec 2016 15:04:00 -0000
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--- Comment #5 from Paul Hua <paul.hua.gm at gmail dot com> ---
(In reply to Paul Hua from comment #4)
>
> Maybe the r242326 cause the bug, the r242324 build success.
>
The r242326 and r242324 has another bug that r242522 fixed. If use r242326 to
reproduce this bug, you should patched the r242522.
>From gcc-bugs-return-548342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 15:09:10 2016
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Subject: [Bug tree-optimization/71563] [6/7 Regression] Regression in GCC-7.0.0's optimizer.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40382
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40382&action=edit
gcc7-pr71563.patch
Untested fix.
>From gcc-bugs-return-548343-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 15:16:31 2016
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Subject: [Bug rtl-optimization/78751] [7 Regression] ICE in extract_insn, at recog.c:2311 (error: unrecognizable insn) w/ -Os -misel
Date: Tue, 20 Dec 2016 15:16:00 -0000
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 40383
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40383&action=edit
patch
I use this patch as workaround. It, well, sucks. But it does work.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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| |jason at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems both make_typename_type and finish_decltype_type can return
error_mark_node even if the arguments passed to those aren't error_mark_node
(as they are called tf_none, no diagnostics is emitted).
The question is what strip_typedefs should do if that happens? Shall it return
error_mark_node, or the original type, something different? The end of the
function assumes that result is a valid type.
>From gcc-bugs-return-548345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 15:53:41 2016
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Subject: [Bug debug/78839] [6/7 Regression] DWARF output different between GCC 5 and 6
Date: Tue, 20 Dec 2016 15:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78839
--- Comment #10 from Tom O'Connor <toconnor at forcepoint dot com> ---
In regards to GDB, I noticed that when using a macro to get the offset for
these bitfields, with objects built by both GCC 5 and earlier as well as GCC 6,
I always get 0. For example:
(gdb) macro define offsetof(t, f) &((t *) 0)->f)
(gdb) p offsetof(struct s, type)
$1 = (unsigned int *) 0x0
Historically, prior to GCC 6, this always matched up with DWARF's
DW_AT_data_member_location value for bitfields. Yes, I see how GCC 6's
combination of data_member_location and bit_offset can be combined to reach the
true location. Historically, my use case has used the data_member_location
value to get me the offset into say a raw memory image, for where to start
reading data from a field of a structure in memory; I'd do bitfield shifts
after reading from the aligned offset as reported in the DWARF structure.
If using DECL_BIT_FIELD_REPRESENTATIVE as data_member_location is nicer and
doesn't break the Ada use case, I'd be all for that. But if what's currently
being emitted by GCC 6 is considered "more correct" than what previous versions
had emitted, then I'll have to adjust. I only noticed the change between 5 and
6 once I started seeing odd results with the same code built by different GCCs.
>From gcc-bugs-return-548346-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 15:55:26 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/78808] target_clones not applying to openmp functions
Date: Tue, 20 Dec 2016 15:55:00 -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 #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The thing is that the pass_dispatcher_calls runs quite late, as late IPA pass,
while the OpenMP outlining is done far earlier. So, we'd need some cgraph node
bit to represent OpenMP/OpenACC/Cilk+ outlined functions, and in
multiple_targets.c look at the cgraph edges from the functions we are cloning,
find out what outlined functions from itself it calls and attempt to clone them
too, plus adjust the cloned function to use them instead. Though they are
actually called indirectly, so probably there aren't any cgraph edges and we'd
have to find it through other means.
>From gcc-bugs-return-548347-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 16:11:03 2016
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/78871] New: Anonymous namespace and -flto -gsplit-dwarf: ICE in lhd_decl_printable_name, at langhooks.c:215
Date: Tue, 20 Dec 2016 16:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78871
Bug ID: 78871
Summary: Anonymous namespace and -flto -gsplit-dwarf: ICE in
lhd_decl_printable_name, at langhooks.c:215
Product: gcc
Version: 7.0
Status: UNCONFIRMED
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Reporter: trippels at gcc dot gnu.org
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All supported gcc versions are affected:
markus@x4 ~ % cat Util.ii
namespace {
void foo() {}
}
markus@x4 ~ % g++ -flto -gsplit-dwarf Util.ii
Util.ii: In function ‘foo’:
Util.ii:2:13: internal compiler error: in lhd_decl_printable_name, at
langhooks.c:215
void foo() {}
^
0x8eec74 lhd_decl_printable_name(tree_node*, int)
/home/markus/gcc/gcc/langhooks.c:215
0x6ffa74 gen_namespace_die
/home/markus/gcc/gcc/dwarf2out.c:25009
0x6ffa74 gen_decl_die
/home/markus/gcc/gcc/dwarf2out.c:25215
0x70078e dwarf2out_decl
/home/markus/gcc/gcc/dwarf2out.c:25628
0x706c2f force_decl_die
/home/markus/gcc/gcc/dwarf2out.c:24847
0x706de5 declare_in_namespace
/home/markus/gcc/gcc/dwarf2out.c:24947
0x700127 declare_in_namespace
/home/markus/gcc/gcc/dwarf2out.c:24918
0x700127 gen_decl_die
/home/markus/gcc/gcc/dwarf2out.c:25116
0x70078e dwarf2out_decl
/home/markus/gcc/gcc/dwarf2out.c:25628
0x700cde dwarf2out_function_decl
/home/markus/gcc/gcc/dwarf2out.c:25643
0x7762ef rest_of_handle_final
/home/markus/gcc/gcc/final.c:4506
0x7762ef execute
/home/markus/gcc/gcc/final.c:4548
Please submit a full bug report,
>From gcc-bugs-return-548348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 16:24:45 2016
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78516] [7 Regression] ICE in lra_assign for e500v2
Date: Tue, 20 Dec 2016 16:24:00 -0000
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--- Comment #17 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Tue, 20 Dec 2016, bergner at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78516
>
> --- Comment #16 from Peter Bergner <bergner at gcc dot gnu.org> ---
> (In reply to Vladimir Makarov from comment #15)
> > Sorry, I applied your changes manually and did a typo. The line
> >
> > SET_SRC (curr_insn_set) = new_reg;
> >
> > should be removed.
> >
> > I tested this patch with the typo on x86-64 and no new failures occurred.
> > Strange.
>
> That would suggest on x86-64, SET_SRC (curr_insn_set) is never a subreg for the
> insns that we process here. As they say, better to be lucky than good! :-)
> With the SPE, we're just not lucky as shown by Joseph's last run. I'm sure it
> will pass after removing the unwanted line above.
With this fix, my build completes OK and the number of FAILs is down from
105 to 62 in g++.sum and from 246 to 188 in gcc.sum (again, this is a
rough comparison with a build from a month ago rather than an exact
comparison against unmodified current mainline).
>From gcc-bugs-return-548349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 16:46:18 2016
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Subject: [Bug debug/78871] Anonymous namespace and -flto -gsplit-dwarf: ICE in lhd_decl_printable_name, at langhooks.c:215
Date: Tue, 20 Dec 2016 16:46:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-20
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-548350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 17:10:21 2016
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/77767] [5/6/7 Regression] Side-effect from VLA array parameters lost
Date: Tue, 20 Dec 2016 17:10:00 -0000
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--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I think the append_to_statement_list version should be preferred.
>From gcc-bugs-return-548351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 17:14:00 2016
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/77754] [5/6/7 Regression] internal compiler error : tree code 'call_expr' is not supported in LTO streams
Date: Tue, 20 Dec 2016 17:14:00 -0000
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--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Tue, 20 Dec 2016, jakub at gcc dot gnu.org wrote:
> So, where would be the best place to remove the VLA bounds from parameters of
> fn declarations? Some function called from c_write_global_declarations_1 and
> from walking BLOCK tree vars e.g. right before calling c_genericize in
> finish_function?
That would seem reasonable.
>From gcc-bugs-return-548352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 18:56:01 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/77767] [5/6/7 Regression] Side-effect from VLA array parameters lost
Date: Tue, 20 Dec 2016 18:56:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Unfortunately that version breaks the pr49120.c testcase, because mark_exp_read
doesn't deal with STATEMENT_LISTs. I'll test the other patch.
>From gcc-bugs-return-548353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 19:17:09 2016
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Subject: [Bug target/70568] [5/6/7 regression] PowerPC64: union of floating and fixed doesn't use POWER8 GPR/VSR moves
Date: Tue, 20 Dec 2016 19:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70568
--- Comment #6 from Michael Meissner <meissner at gcc dot gnu.org> ---
*** Bug 78823 has been marked as a duplicate of this bug. ***
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From: "meissner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78823] Poor code on PowerPC when moving SFmode values between GPRs and vector registers
Date: Tue, 20 Dec 2016 19:17:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
This bug is a duplicate of 70568.
*** This bug has been marked as a duplicate of bug 70568 ***
>From gcc-bugs-return-548355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 19:20:23 2016
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From: "meissner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/70568] [5/6/7 regression] PowerPC64: union of floating and fixed doesn't use POWER8 GPR/VSR moves
Date: Tue, 20 Dec 2016 19:20:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.8.5
Known to fail| |4.9.4, 5.4.1, 6.2.1, 7.0
--- Comment #7 from Michael Meissner <meissner at gcc dot gnu.org> ---
I noticed this bug and created PR 78823. Since that's the same bug as this,
I'll take it.
>From gcc-bugs-return-548356-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 19:41:59 2016
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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78516] [7 Regression] ICE in lra_assign for e500v2
Date: Tue, 20 Dec 2016 19:41:00 -0000
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--- Comment #18 from Peter Bergner <bergner at gcc dot gnu.org> ---
With the patch Vlad attached minus the one unwanted line/typo, I'm getting an
ICE on a powerpc64le-linux bootstrap. Looking into it.
/home/bergner/gcc/gcc-fsf-mainline-pr78516/libgcc/libgcc2.c: In function
‘__floatuntisf’:
/home/bergner/gcc/gcc-fsf-mainline-pr78516/libgcc/libgcc2.c:1819:1: internal
compiler error: in lra_set_insn_recog_data, at lra.c:965
}
^
0x10a8eaaf lra_set_insn_recog_data(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:963
0x10a8b8d7 lra_get_insn_recog_data
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra-int.h:487
0x10a9142f lra_update_insn_regno_info(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:1585
0x10a91e4f lra_push_insn_1
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:1736
0x10a91eb3 lra_push_insn(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:1744
0x10a92113 push_insns
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:1787
0x10a92447 lra_process_new_insns(rtx_insn*, rtx_insn*, rtx_insn*, char const*)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:1835
0x10aa7ecb check_and_process_move
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra-constraints.c:1261
0x10ab11f3 curr_insn_transform
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra-constraints.c:3709
0x10ab5bf3 lra_constraints(bool)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra-constraints.c:4705
0x10a9435b lra(_IO_FILE*)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:2377
0x10a0fb2f do_reload
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/ira.c:5400
0x10a10363 execute
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/ira.c:5584
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Subject: [Bug c++/78872] New: g++ refuses const trailing a function declaration.
Date: Tue, 20 Dec 2016 20:11:00 -0000
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Bug ID: 78872
Summary: g++ refuses const trailing a function declaration.
Product: gcc
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#include <string>
#include <cctype>
#include <locale>
#include <uchar.h>
namespace std {
int locale::icompare(const char_type* low1, const char_type* high1, const
char_type*low2, const char_type* high2) const;
};
>From gcc-bugs-return-548358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 20:18:45 2016
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Subject: [Bug c++/78872] g++ refuses const trailing a function declaration.
Date: Tue, 20 Dec 2016 20:18:00 -0000
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--- Comment #1 from Jim Michaels <jmichae3 at yahoo dot com> ---
icompare.cpp:12:119: error: no 'int std::locale::icompare(const char_type*,
const char_type*, const char_type*, const char_type*) const' member function
declared in class 'std::locale'
int locale::icompare(const char_type* low1, const char_type* high1, const
char_type*low2, const char_type* high2) const;
^~~~~
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/52192] GCC_CHECK_TLS doesn't detect native TLS on Solaris 8/9
Date: Tue, 20 Dec 2016 20:20:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should we change the target to *-*-netbsd* now that solaris 8 and 9 are not
supported?
>From gcc-bugs-return-548360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 20:22:35 2016
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Subject: [Bug c++/78872] g++ refuses const trailing a function declaration.
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2016-12-20
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I don't see why you think this is a bug. There is no function called
std::locale::icompare in the declared class std::locale. This is what the
error message exactly says even.
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Subject: [Bug c++/78842] "error: declaration of 'bool icase' shadows a parameter" should be warning
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--- Comment #5 from Jim Michaels <jmichae3 at yahoo dot com> ---
I am going to have to go digging through my code. the function that I had this
error on about icase shadowing a parameter was a global var, and I tried
#include <iostream>
#include <vector>
#include <string>
bool icase=false;
std::vector<size_t> find_vsizet(std::string haystack, std::string needle, bool
icase=false, size_t pos=0){
return {0};
}
int main(){
std::vector<size_t> vst=find_vsizet("1","2",false,0);
for (int i=0; i < vst.size(); i++) {
std::cout<<vst[i]<<std::endl;
}
return 0;
}
but this compiled well and it's the same code I thought. so it's possible this
bug may need to be invalidated.
>From gcc-bugs-return-548362-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 21:10:56 2016
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Subject: [Bug c++/78842] "error: declaration of 'bool icase' shadows a parameter" should be warning
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--- Comment #6 from Jim Michaels <jmichae3 at yahoo dot com> ---
(In reply to Nathan Sidwell from comment #4)
> sigh, bugzilla's moving on to 'random' other bug gets me. Again.
btw, I think that random bug number feature is in preferences.
>From gcc-bugs-return-548363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 21:27:49 2016
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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78516] [7 Regression] ICE in lra_assign for e500v2
Date: Tue, 20 Dec 2016 21:27:00 -0000
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--- Comment #19 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #18)
> With the patch Vlad attached minus the one unwanted line/typo, I'm getting
> an ICE on a powerpc64le-linux bootstrap. Looking into it.
Here's a minimal test case:
bergner@genoa:~/gcc/BUGS/PR78516$ cat libgcc2.i
float
fn1 (__int128 a)
{
if ((unsigned)a == a)
return a;
}
bergner@genoa:~/gcc/BUGS/PR78516$
/home/bergner/gcc/build/gcc-fsf-mainline-pr78516/./gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-mainline-pr78516/./gcc/ -O2 -S libgcc2.i
libgcc2.i: In function ‘fn1’:
libgcc2.i:6:1: internal compiler error: in lra_set_insn_recog_data, at
lra.c:965
}
^
0x10a8eaaf lra_set_insn_recog_data(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-pr78516/gcc/lra.c:963
We have the following insn after IRA:
(insn 13 12 31 4 (set (reg:SF 157 [ <retval> ])
(float:SF (subreg:DI (reg/v:TI 158 [ aD.2516 ]) 0))) "libgcc2.i":5 407
{floatdisf2_fcfids}
(expr_list:REG_DEAD (reg/v:TI 158 [ aD.2516 ])
(nil)))
With pseudo 157 being assigned to fp reg fr1 and pseudo 158 being assigned to
r3. The floatdisf2_fcfids pattern looks like:
(define_insn "floatdisf2_fcfids"
[(set (match_operand:SF 0 "gpc_reg_operand" "=f,wy")
(float:SF (match_operand:DI 1 "gpc_reg_operand" "d,wi")))]
"TARGET_HARD_FLOAT && TARGET_FPRS && TARGET_SINGLE_FLOAT
&& TARGET_DOUBLE_FLOAT && TARGET_FCFIDS"
"@
fcfids %0,%1
xscvsxdsp %x0,%x1"
[(set_attr "type" "fp")])
...so pseudo 158 does not match the pattern's constraints.
check_and_process_move() doesn't handle this type of insn, so it returns false
and eventually, we generate the following two insns (haven't tracked down where
they come from yet):
(insn 38 12 13 4 (set (reg:DI 165)
(subreg:DI (reg/v:TI 158 [ a ]) 0)) "libgcc2.i":5 582
{*movdi_internal64}
(nil))
(insn 13 38 31 4 (set (reg:SF 157 [ <retval> ])
(float:SF (reg:DI 165))) "libgcc2.i":5 407 {floatdisf2_fcfids}
(expr_list:REG_DEAD (reg/v:TI 158 [ a ])
(nil)))
This maybe looks ok (?), except for the REG_DEAD on insn 13 should have been
removed and added to the new insn 38.
Later, check_and_process_move() is called again, this time for the new insn 38
and this is where we end up ICEing. We end up seeing:
(gdb) pr dest
(reg:DI 165)
(gdb) pr dreg
(reg:DI 165)
(gdb) p dclass
$54 = FLOAT_REGS
(gdb) p dregno
$55 = 165
(gdb) pr src
(subreg:DI (reg/v:TI 158 [ a ]) 0)
(gdb) pr sreg
(reg/v:TI 158 [ a ])
(gdb) p sregno
$56 = -1
(gdb) p sclass
$57 = BASE_REGS
(gdb) p secondary_class
$58 = NO_REGS
Due to the above, new_reg == NULL_RTX and sri.icode ==
CODE_FOR_reload_vsx_from_gprti. This pushes us down the else clause of the
following if:
if (sri.icode == CODE_FOR_nothing)
lra_emit_move (new_reg, sreg);
else
{
enum reg_class scratch_class;
scratch_class = (reg_class_from_constraints
(insn_data[sri.icode].operand[2].constraint));
scratch_reg = (lra_create_new_reg_with_unique_value
(insn_data[sri.icode].operand[2].mode, NULL_RTX,
scratch_class, "scratch"));
emit_insn (GEN_FCN (sri.icode) (new_reg != NULL_RTX ? new_reg : dest,
new_reg != NULL_RTX ? sreg : src,
scratch_reg));
}
We then up calling gen_reload_vsx_from_gprti() via the emit_insn() with:
op0, op1 and op2 as:
(gdb) pr operand0
(reg:DI 165)
(gdb) pr operand1
(subreg:DI (reg/v:TI 158 [ a ]) 0)
(gdb) pr operand2
(reg:IF 166)
That subreg for operand1 does not look correct to me.
>From gcc-bugs-return-548364-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 22:55:16 2016
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Subject: [Bug c++/78872] g++ refuses const trailing a function declaration.
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You can't just declare new functions of std::locale, that type is controlled
by the standard library, not by you.
Please stop filing bugs here until you learn basic C++.
>From gcc-bugs-return-548365-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 23:02:59 2016
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Subject: [Bug c++/78842] "error: declaration of 'bool icase' shadows a parameter" should be warning
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Presumably you had a local variable 'icase' in your function, because you
wouldn't get a diagnostic saying "shadows a parameter" for a global variable.
That's impossible.
It's an error if the local variable is in the outermost block of the function,
because it declares two variables of the same name in the same scope:
void find_vsizet(bool icase=false)
{
bool icase = false; // error
{
bool icase = false; // ok here, only a warning
}
}
>From gcc-bugs-return-548366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 23:06:31 2016
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Subject: [Bug libstdc++/78870] Support std::filesystem on Windows
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jan Niklas Hasse from comment #2)
> I'm willing to help.
Great! Please read
https://gcc.gnu.org/onlinedocs/libstdc++/manual/appendix_contributing.html
especially the part about legal paperwork.
> Is there an existing starting point for Windows? Can
> boost::filesystem's implementation be used?
No. Just look at the existing code and figure out what the equivalent code
would be for Windows, and write an alternative implementation e.g. replace
calls to POSIX stat() with whatever Windows uses to query file properties, and
replace calls to POSIX chmod with whatever Windows uses to change file
permissions.
>From gcc-bugs-return-548367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 23:07:55 2016
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Subject: [Bug libstdc++/71444] Error constants for MinGW-w64
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
In fact it looks like the patch should work for mingw-w64 v4, and maybe v3 too.
>From gcc-bugs-return-548368-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 23:19:09 2016
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Subject: [Bug c++/78873] New: Virtual call after conversion to base class pointer is not devirtualized
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Bug ID: 78873
Summary: Virtual call after conversion to base class pointer is
not devirtualized
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The following test case shows the issue. The generated code for
TestDevirtualization<Impl> could perform a direct call to Impl::Foo but it
performs a call via the vtable.
#include <stdio.h>
struct Iface {
virtual void Foo() = 0;
};
struct Impl : public Iface {
__attribute__ ((noinline))
void Foo() override final
{
printf("Impl::Foo\n");
}
};
template <typename Type>
__attribute__ ((noinline))
void TestDevirtualuzation(Type *obj)
{
static_cast<Iface *>(obj)->Foo();
}
int main() {
Impl impl;
TestDevirtualuzation(&impl);
return 0;
}
I have heard arguments that optimizing this would not be legal, with the
following test case which supposedly might be valid:
struct Liar : Iface {
void Foo() {}
};
Impl impl;
TestDevirtualuzation(reinterpret_cast<Liar*>(&impl));
But I think it is not valid; the result of the reinterpret_cast does not point
to a Liar object, so the static_cast done in TestDevirtualuzation *should* be
invalid. I couldn't find a clear statement in the standard about this though.
>From gcc-bugs-return-548369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 20 23:59:03 2016
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Subject: [Bug target/78516] [7 Regression] ICE in lra_assign for e500v2
Date: Tue, 20 Dec 2016 23:59:00 -0000
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--- Comment #20 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #19)
> emit_insn (GEN_FCN (sri.icode) (new_reg != NULL_RTX ? new_reg : dest,
> new_reg != NULL_RTX ? sreg : src,
> scratch_reg));
> }
[snip]
> That subreg for operand1 does not look correct to me.
Vlad, for the following change in the hunk above:
> new_reg != NULL_RTX ? sreg : src,
shouldn't that always be just "sreg"? Ie, why are we testing for new_reg !=
NULL_RTX and sometimes passing in "src"?
>From gcc-bugs-return-548370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 00:08:35 2016
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Subject: [Bug c/77767] [5/6/7 Regression] Side-effect from VLA array parameters lost
Date: Wed, 21 Dec 2016 00:08:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 00:07:49 2016
New Revision: 243832
URL: https://gcc.gnu.org/viewcvs?rev=243832&root=gcc&view=rev
Log:
PR c/77767
* c-decl.c (grokdeclarator): If *expr is non-NULL, append expression
to *expr instead of overwriting it.
* gcc.c-torture/execute/pr77767.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr77767.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 02:18:50 2016
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From: "jzwinck at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/78874] New: Manual describes "-Wno-aggressive-loop-optimizations" as if without "no-"
Date: Wed, 21 Dec 2016 02:18:00 -0000
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Bug ID: 78874
Summary: Manual describes "-Wno-aggressive-loop-optimizations"
as if without "no-"
Product: gcc
Version: 6.2.1
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The gcc and g++ man pages say:
-Wno-aggressive-loop-optimizations
Warn if in a loop with constant number of iterations the compiler detects
undefined behavior in some statement during one or more of the iterations.
The "no-" here is a mistake: -Waggressive-loop-optimizations enables the
message and -Wno-* turns it off.
Demo: https://godbolt.org/g/1ICxI5
>From gcc-bugs-return-548372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 04:21:59 2016
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Subject: [Bug target/78516] [7 Regression] ICE in lra_assign for e500v2
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--- Comment #21 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #20)
> Vlad, for the following change in the hunk above:
>
> > new_reg != NULL_RTX ? sreg : src,
>
> shouldn't that always be just "sreg"? Ie, why are we testing for new_reg !=
> NULL_RTX and sometimes passing in "src"?
Well we still ICE even with that, so this will take more digging.
>From gcc-bugs-return-548373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 04:24:48 2016
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Subject: [Bug c++/78767] [7 Regression] ICE when inheriting constructor of base class
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>From gcc-bugs-return-548374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 04:39:39 2016
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Subject: [Bug c++/78749] [7 Regression] bogus warning for friend member function in anonymous namespace
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>From gcc-bugs-return-548375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 07:39:01 2016
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From: "benh at kernel dot crashing.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78875] New: -fstack-protector on powerpc64 now always use TLS, won't work for kernel/firmware
Date: Wed, 21 Dec 2016 07:39:00 -0000
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Bug ID: 78875
Summary: -fstack-protector on powerpc64 now always use TLS,
won't work for kernel/firmware
Product: gcc
Version: 6.2.0
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Some standalone (not linked with glibc) programs such as the Linux Kernel
or the OPAL firmware do not have a TLS per-se. They use r13 for different
purposes (both examples here use it as some kind of per-cpu pointer).
Depending on gcc version and how it was built, the canary used by
-fstack-protector on powerpc64 is either loaded from a global (r2 relative) or
from the TLS (r13).
The latter case won't work for those programs. I looked into doing like x86 and
basically maintaining an equivalent of that portion of the TLS space for this,
but the offset used -0x7000 really doesn't work with either Linux or OPAL
without major changes to how they use r13.
In the meantime, it would be useful to still be able to exploit the stack
protector, to be able to force via a gcc command line option, the use of
globals instead of TLS (and in general disable any built-in access to the TLS
for projects that have a special runtime environment that doesn't use r13 for
that purpose).
>From gcc-bugs-return-548376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 08:11:16 2016
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From: "fmarchal at perso dot be" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78876] New: Wording error in Wpedantic-ms-format description
Date: Wed, 21 Dec 2016 08:11:00 -0000
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Bug ID: 78876
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The description for Wpedantic-ms-format in gcc/config/i386/mingw.opt at line 29
is:
"Warn about none ISO msvcrt scanf/printf width extensions."
I'm pretty sure it should be "non-ISO" or something similar.
>From gcc-bugs-return-548377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 08:31:27 2016
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Subject: [Bug fortran/78867] [7 Regression] GFortran function returning string ICE with -flto
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--- Comment #6 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Ok, I think I figured it out; like Richard said, it's a missing DECL_EXPR
issue. Patch incoming shortly.-
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Subject: [Bug fortran/78866] ICE in gimplify_adjust_omp_clauses_1, at gimplify.c:8721
Date: Wed, 21 Dec 2016 09:02:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The parallel isn't needed, and we ICE both explicitly mapped and implicitly
mapped assumed-size arrays. This is a bug in the standard, it doesn't restrict
mapping from mapping assumed-size arrays, even when they actually can't be
mapped (because the size is not known). At least the definition of mappable
type for Fortran does not exclude assumed-size arrays, and they aren't listed
as disallowed.
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Subject: [Bug fortran/78867] [7 Regression] GFortran function returning string ICE with -flto
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2016-12/msg01750.ht
| |ml
--- Comment #7 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Patch here: https://gcc.gnu.org/ml/gcc-patches/2016-12/msg01750.html
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Subject: [Bug driver/78877] New: Missing suggestion for -fsanitizedres
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Bug ID: 78877
Summary: Missing suggestion for -fsanitize=addres
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Currently, we do not suggest '-fsanitize=address' for '-fsanitize=addres',
which replacing equal symbol with dash works fine.
$ echo | ./xgcc -B. -fsanitize=addres -xc -
xgcc: error: unrecognized argument to -fsanitize= option: ‘addres’
$ echo | ./xgcc -B. -fsanitize-addres -xc -
xgcc: error: unrecognized command line option ‘-fsanitize-addres’;
did you mean ‘-fsanitize=address’?
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Subject: [Bug sanitizer/78878] New: stacktrace engine can't use compressed/separated debug info for extracting symbols.
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Bug ID: 78878
Summary: stacktrace engine can't use compressed/separated debug
info for extracting symbols.
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
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Priority: P3
Component: sanitizer
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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
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Created attachment 40384
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40384&action=edit
testcase
hi,
i've noticed that compressed debuginfo (or externally accessible via
.gnu_debuglink section) is not used for decorating sanitizer stacktrace.
e.g.:
=================================================================
==6290==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x7f4d243840ce in operator new(unsigned long)
(/lib64/liblsan.so.0+0xe0ce)
#1 0x400693 (/home/pawels/bugs/mem-leak/m+0x400693)
#2 0x40069f (/home/pawels/bugs/mem-leak/m+0x40069f)
#3 0x7f4d23728400 in __libc_start_main (/lib64/libc.so.6+0x20400)
without compression/debuglink the stacktrace is more readable:
=================================================================
==6318==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x7efe533370ce in operator new(unsigned long)
(/lib64/liblsan.so.0+0xe0ce)
#1 0x400693 in leak() /home/pawels/bugs/mem-leak/m.cpp:4
#2 0x40069f in main /home/pawels/bugs/mem-leak/m.cpp:8
#3 0x7efe526db400 in __libc_start_main (/lib64/libc.so.6+0x20400)
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From: "jb at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/78867] [7 Regression] GFortran function returning string ICE with -flto
Date: Wed, 21 Dec 2016 09:42:00 -0000
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--- Comment #8 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Author: jb
Date: Wed Dec 21 09:41:25 2016
New Revision: 243842
URL: https://gcc.gnu.org/viewcvs?rev=243842&root=gcc&view=rev
Log:
PR 78867 Function returning string ICE with -flto
The fix for PR 78757 was slightly too cautious, and covered only the
case of functions returning pointers to characters. By moving the
block above the if statement the DECL_EXPR is created also for
functions returning non-pointer characters.
Regtested on x86_64-pc-linux-gnu.
fortran ChangeLog:
2016-12-21 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/78867
* trans-expr.c (gfc_conv_procedure_call): Emit DECL_EXPR also for
non-pointer character results.
testsuite ChangeLog:
2016-12-21 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/78867
* gfortran.dg/string_length_4.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/string_length_4.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/78757] [7 Regression] ICE with function returning a pointer to a character
Date: Wed, 21 Dec 2016 09:42:00 -0000
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--- Comment #8 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Author: jb
Date: Wed Dec 21 09:41:25 2016
New Revision: 243842
URL: https://gcc.gnu.org/viewcvs?rev=243842&root=gcc&view=rev
Log:
PR 78867 Function returning string ICE with -flto
The fix for PR 78757 was slightly too cautious, and covered only the
case of functions returning pointers to characters. By moving the
block above the if statement the DECL_EXPR is created also for
functions returning non-pointer characters.
Regtested on x86_64-pc-linux-gnu.
fortran ChangeLog:
2016-12-21 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/78867
* trans-expr.c (gfc_conv_procedure_call): Emit DECL_EXPR also for
non-pointer character results.
testsuite ChangeLog:
2016-12-21 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/78867
* gfortran.dg/string_length_4.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/string_length_4.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 09:46:22 2016
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From: "coolypf at qq dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78879] New: -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Wed, 21 Dec 2016 09:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78879
Bug ID: 78879
Summary: -fprofile-generate causes undefined reference to
`____ilog2_NaN'
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 40385
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40385&action=edit
test case
When building Linux kernel 3.10 for aarch64 with -fprofile-generate, I
encountered undefined reference to `____ilog2_NaN'. Here are steps to
reproduce:
coolypf@experiment:~$ aarch64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/aarch64-linux-gnu/6.2.1/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../gcc/configure --enable-languages=c --disable-threads
--disable-nls --disable-tls --disable-plugin --disable-bootstrap
--disable-werror --enable-cloog-backend=isl --disable-lto --enable-multiarch
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=aarch64-linux-gnu
Thread model: single
gcc version 6.2.1 20161221 (GCC)
coolypf@experiment:~$ aarch64-linux-gnu-gcc -c -O2 test.i
coolypf@experiment:~$ nm test.o | grep ilog2
coolypf@experiment:~$ aarch64-linux-gnu-gcc -c -O2 -fprofile-generate test.i
coolypf@experiment:~$ nm test.o | grep ilog2
U ____ilog2_NaN
Related source code location is
http://lxr.free-electrons.com/source/drivers/scsi/sd.c?v=3.10#L2197
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Subject: [Bug fortran/78867] [7 Regression] GFortran function returning string ICE with -flto
Date: Wed, 21 Dec 2016 09:47:00 -0000
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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--- Comment #9 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Fixed on trunk, closing.
>From gcc-bugs-return-548386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 09:48:52 2016
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Subject: [Bug other/52192] GCC_CHECK_TLS doesn't detect native TLS on Solaris 8/9
Date: Wed, 21 Dec 2016 09:48:00 -0000
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--- Comment #6 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> Should we change the target to *-*-netbsd* now that solaris 8 and 9 are not
> supported?
Certainly: I've no intention on working on the Solaris side of this anymore.
Rainer
>From gcc-bugs-return-548387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 09:49:08 2016
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
See discussion in PR72785.
>From gcc-bugs-return-548388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 09:50:28 2016
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Subject: [Bug libfortran/70311] libgfortran build dies on "implicit declaration of function strncasecmp"
Date: Wed, 21 Dec 2016 09:50:00 -0000
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--- Comment #3 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Author: fxcoudert
Date: Wed Dec 21 09:49:40 2016
New Revision: 243843
URL: https://gcc.gnu.org/viewcvs?rev=243843&root=gcc&view=rev
Log:
PR libfortran/70311
* intrinsics/selected_char_kind.c: Include <strings.h> header.
* runtime/environ.c: Include <strings.h> header.
* runtime/string.c: Include <strings.h> header.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/intrinsics/selected_char_kind.c
trunk/libgfortran/runtime/environ.c
trunk/libgfortran/runtime/string.c
>From gcc-bugs-return-548389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 09:53:12 2016
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Subject: [Bug sanitizer/77982] deadlock in asan thread initialization/interception.
Date: Wed, 21 Dec 2016 09:53:00 -0000
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--- Comment #12 from Pawel Sikora <pawel_sikora at zoho dot com> ---
(In reply to Maxim Ostapenko from comment #11)
> Created attachment 39882 [details]
> Untested fix
>
> Untested fix (works for me with attached testcase).
>
this fix works for me. thanks.
>From gcc-bugs-return-548390-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 09:55:30 2016
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Subject: [Bug libfortran/70311] libgfortran build dies on "implicit declaration of function strncasecmp"
Date: Wed, 21 Dec 2016 09:55:00 -0000
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Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:
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--- Comment #4 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
The <strings.h> issue is fixed. For strnlen(), indeed I think a proper fix
should be in mingw32.
>From gcc-bugs-return-548391-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:10:49 2016
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Wed, 21 Dec 2016 10:10:00 -0000
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--- Comment #2 from Yuan Pengfei <coolypf at qq dot com> ---
(In reply to Markus Trippelsdorf from comment #1)
> See discussion in PR72785.
I am using GCC 6.2.1. Is it the same problem?
>From gcc-bugs-return-548392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:16:55 2016
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From: "venkataramanan.kumar at amd dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 10:16:00 -0000
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--- Comment #9 from Venkataramanan <venkataramanan.kumar at amd dot com> ---
(In reply to Jakub Jelinek from comment #6)
> Sure, the question is (raised several times over the last couple of years)
> is if the generic tuning should not adjust slightly based on the selected
> ISAs.
> AVX2 is right now only supported by Intel CPUs and bdver4/znver1 from the
> AMD CPUs. The Intel CPUs don't want this kind of tuning, dunno if
> bdver4/znver1 prefers such splitting or not. If not and it is limited only
> to older AMD chips, the question is whether it shouldn't be removed from the
> generic tuning, or if narrowing the set of CPUs (by adding further ISAs)
> can't change some properties of the generic tuning (say define generic+avx2
> and generic+avx512f tunings that would be enabled for generic tuning if
> MASK_AVX2 or MASK_AVX512F is set).
I did some benchmarking on AMD avx2 target with and without unaligned avx256
load splitting. Noticing regressions when we allow the splitting of avx256
unaligned loads.
Already for AMD AVX2 target, splitting is turned off. So I suggest not to do
avx256 unaligned load splitting for generic also.
>From gcc-bugs-return-548393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:20:15 2016
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Subject: [Bug other/63387] Optimize pairs of isnan() calls into a single isunordered()
Date: Wed, 21 Dec 2016 10:20:00 -0000
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John Zwinck <jzwinck at gmail dot com> changed:
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Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from John Zwinck <jzwinck at gmail dot com> ---
I confirm this is fixed in GCC 6.1. Thank you very much.
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From: "rainer@emrich-ebersheim.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/78880] New: [7 Regression] Revision 243196 breaks bootstrap on x86_64-w64-mingw32
Date: Wed, 21 Dec 2016 10:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78880
Bug ID: 78880
Summary: [7 Regression] Revision 243196 breaks bootstrap on
x86_64-w64-mingw32
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: rainer@emrich-ebersheim.de
Target Milestone: ---
Revision 243196 breaks native bootstrap on x86_64-w64-mingw32 using
--with-sysroot to point gcc to the mingw-w64 runtime. This used to work since
years until then.
The bootstrap fails in stage 1 building libgcc due to not finding the runtime
libraries:
mv tmp-libgcc.map libgcc.map
# @multilib_flags@ is still needed because this may use
# /opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0/./gcc/xgcc
-B/opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0/./gcc/
-L/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/lib
-L/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/mingw/lib
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/include
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/mingw/include
-B/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/bin/
-B/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/lib/
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/include
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/sys-include
and -O2
-I../../../../../../../../opt/devel/gnu/src/gcc-mingw-w64/gcc-7.0.0/libgcc/../winsup/w32api/include
-g -O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wno-format -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector
directly.
# @multilib_dir@ is not really necessary, but sometimes it has
# more uses than just a directory name.
/bin/sh
../../../../../../../../opt/devel/gnu/src/gcc-mingw-w64/gcc-7.0.0/libgcc/../mkinstalldirs
.
cp -p -f libgcc.map libgcc.map.def && if [ ! -d ./shlib ]; then mkdir ./shlib;
else true; fi &&
/opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0/./gcc/xgcc
-B/opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0/./gcc/
-L/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/lib
-L/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/mingw/lib
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/include
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/mingw/include
-B/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/bin/
-B/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/lib/
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/include
-isystem
/opt/devel/gnu/gcc/MINGW_NT/x86_64-w64-mingw32/mingw-w64-runtime-trunk-svn/gcc-7.0.0/x86_64-w64-mingw32/sys-include
-O2
-I../../../../../../../../opt/devel/gnu/src/gcc-mingw-w64/gcc-7.0.0/libgcc/../winsup/w32api/include
-g -O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wno-format -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector
-pthread -shared -nodefaultlibs libgcc.map.def
-Wl,--out-implib,./shlib/libgcc_s.a.tmp -o ./shlib/libgcc_s_seh-1.dll.tmp -g
-O2 -B./ _chkstk_s.o _chkstk_ms_s.o _muldi3_s.o _negdi2_s.o _lshrdi3_s.o
_ashldi3_s.o _ashrdi3_s.o _cmpdi2_s.o _ucmpdi2_s.o _clear_cache_s.o
_trampoline_s.o __main_s.o _absvsi2_s.o _absvdi2_s.o _addvsi3_s.o _addvdi3_s.o
_subvsi3_s.o _subvdi3_s.o _mulvsi3_s.o _mulvdi3_s.o _negvsi2_s.o _negvdi2_s.o
_ctors_s.o _ffssi2_s.o _ffsdi2_s.o _clz_s.o _clzsi2_s.o _clzdi2_s.o _ctzsi2_s.o
_ctzdi2_s.o _popcount_tab_s.o _popcountsi2_s.o _popcountdi2_s.o _paritysi2_s.o
_paritydi2_s.o _powisf2_s.o _powidf2_s.o _powixf2_s.o _powitf2_s.o _mulhc3_s.o
_mulsc3_s.o _muldc3_s.o _mulxc3_s.o _multc3_s.o _divhc3_s.o _divsc3_s.o
_divdc3_s.o _divxc3_s.o _divtc3_s.o _bswapsi2_s.o _bswapdi2_s.o _clrsbsi2_s.o
_clrsbdi2_s.o _fixunssfsi_s.o _fixunsdfsi_s.o _fixunsxfsi_s.o _fixsfdi_s.o
_fixdfdi_s.o _fixxfdi_s.o _fixunssfdi_s.o _fixunsdfdi_s.o _fixunsxfdi_s.o
_floatdisf_s.o _floatdidf_s.o _floatdixf_s.o _floatundisf_s.o _floatundidf_s.o
_floatundixf_s.o _divdi3_s.o _moddi3_s.o _divmoddi4_s.o _udivdi3_s.o
_umoddi3_s.o _udivmoddi4_s.o _udiv_w_sdiv_s.o cpuinfo_s.o sfp-exceptions_s.o
addtf3_s.o divtf3_s.o eqtf2_s.o getf2_s.o letf2_s.o multf3_s.o negtf2_s.o
subtf3_s.o unordtf2_s.o fixtfsi_s.o fixunstfsi_s.o floatsitf_s.o
floatunsitf_s.o fixtfdi_s.o fixunstfdi_s.o floatditf_s.o floatunditf_s.o
fixtfti_s.o fixunstfti_s.o floattitf_s.o floatuntitf_s.o extendsftf2_s.o
extenddftf2_s.o extendxftf2_s.o trunctfsf2_s.o trunctfdf2_s.o trunctfxf2_s.o
enable-execute-stack_s.o unwind-seh_s.o unwind-sjlj_s.o unwind-c_s.o emutls_s.o
libgcc.a -Wl,-lpthread -lmingwthrd -lmingw32 -lmingwex -lmoldname -lmsvcrt
-ladvapi32 -lshell32 -luser32 -lkernel32 && if [ -f ./shlib/libgcc_s_seh-1.dll
]; then mv -f ./shlib/libgcc_s_seh-1.dll ./shlib/libgcc_s_seh-1.dll.backup;
else true; fi && mv ./shlib/libgcc_s_seh-1.dll.tmp ./shlib/libgcc_s_seh-1.dll
&& mv ./shlib/libgcc_s.a.tmp ./shlib/libgcc_s.a
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find dllcrt2.o: No such file or directory
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lpthread
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lmingwthrd
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lmingw32
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lmingwex
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lmoldname
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lmsvcrt
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -ladvapi32
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lshell32
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -luser32
D:\opt\devel\gnu\gcc\MINGW_NT\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.0.0\bin\ld.exe:
cannot find -lkernel32
collect2.exe: error: ld returned 1 exit status
make[3]: *** [Makefile:976: libgcc_s.dll] Error 1
make[3]: Leaving directory
'/opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0/x86_64-w64-mingw32/libgcc'
make[2]: *** [Makefile:17977: all-stage1-target-libgcc] Error 2
make[2]: Leaving directory
'/opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0'
make[1]: *** [Makefile:23000: stage1-bubble] Error 2
make[1]: Leaving directory
'/opt/devel/SCRATCH/tmp.gxxTu9rzHn/gcc-7.0.0/gcc-7.0.0'
make: *** [Makefile:938: all] Error 2
Revision 243195 is fine.
>From gcc-bugs-return-548395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:35:12 2016
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From: "linux at carewolf dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 10:35:00 -0000
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--- Comment #10 from Allan Jensen <linux at carewolf dot com> ---
That would solve the problem, but also leave the behavior as Sandybridge only
(nehalem didn't have AVX).
>From gcc-bugs-return-548396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:38:58 2016
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From: "linux at carewolf dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 10:38:00 -0000
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--- Comment #11 from Allan Jensen <linux at carewolf dot com> ---
Btw, did you benchmark store splitting on AMD? It is also enabled for BDVER and
ZNVER1.
>From gcc-bugs-return-548397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:47:02 2016
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Wed, 21 Dec 2016 10:47:00 -0000
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--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Yuan Pengfei from comment #2)
> (In reply to Markus Trippelsdorf from comment #1)
> > See discussion in PR72785.
>
> I am using GCC 6.2.1. Is it the same problem?
Yes, I think so. The compiler is under no obligation to optimize the
____ilog2_NaN call away. It looks like a kernel bug.
>From gcc-bugs-return-548400-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:54:30 2016
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Subject: [Bug tree-optimization/72785] [7 Regression] kernel build error since r236831
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CC| |coolypf at qq dot com
--- Comment #20 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 78879 has been marked as a duplicate of this bug. ***
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Subject: [Bug tree-optimization/72785] [7 Regression] kernel build error since r236831
Date: Wed, 21 Dec 2016 10:54:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #19 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Lets close this one as invalid. It looks like a kernel bug after all.
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Wed, 21 Dec 2016 10:54:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
dup
*** This bug has been marked as a duplicate of bug 72785 ***
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Subject: [Bug tree-optimization/69196] [5/6/7 Regression] code size regression with jump threading at -O2
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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> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/71020] [6 Regression] SSA corruption: Unable to coalesce ssa_names 2 and 13 which are marked as MUST COALESCE.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/65139] Improve register allocation for aarch64_*_sisd_or_int<mode>3 patterns
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/69823] [6/7 Regression] internal compiler error: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:445
Date: Wed, 21 Dec 2016 10:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/70359] [6/7 Regression] Code size increase for ARM compared to gcc-5.3.0
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug fortran/78152] [6/7 Regression] coarray and associate
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/71824] [6/7 Regression] ICE when compiling libiberty with Graphite loop optimizations
Date: Wed, 21 Dec 2016 10:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/68682] [6/7 Regression] [graphite] loop interchange no longer working after r227277
Date: Wed, 21 Dec 2016 10:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/66487] sanitizer/warnings for lifetime DSE
Date: Wed, 21 Dec 2016 10:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug testsuite/66403] gcc.dg/torture/builtin-self.c FAILs with PIE
Date: Wed, 21 Dec 2016 10:55:00 -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> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/71463] [6/7 regression] unexpected warning: ignoring function return attributes on template argument
Date: Wed, 21 Dec 2016 10:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/77626] [6 Regression] ICE with -Wall on x86_64-linux-gnu (internal compiler error: Segmentation fault, byte_from_pos, cxx_fold_indirect_ref)
Date: Wed, 21 Dec 2016 10:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:55:46 2016
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Subject: [Bug target/78543] [6 Regression] ICE in push_reload, at reload.c:1349 on powerpc64le-linux-gnu
Date: Wed, 21 Dec 2016 10:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug middle-end/77484] [6/7 Regression] Static branch predictor causes ~6-8% regression of SPEC2000 GAP
Date: Wed, 21 Dec 2016 10:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug fortran/68717] [6/7 Regression] New (bogus?) warnings when compiling some gfortran.dg tests with -flto after r231239
Date: Wed, 21 Dec 2016 10:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/65642] [C++11] GCC rejects valid constant expression
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 10:57:40 2016
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Subject: [Bug target/68664] PowerPC: speculative sqrt in c-ray main loop causes large slow down
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug rtl-optimization/70164] [6/7 Regression] Code/performance regression due to poor register allocation on Cortex-M0
Date: Wed, 21 Dec 2016 10:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug other/66250] Can't adjust complex nor decimal floating point modes
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #29 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug fortran/68560] [6/7 Regression] The test gfortran.dg/shape_8.f90 now fails when compiled with -flto
Date: Wed, 21 Dec 2016 10:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug middle-end/65534] tailcall not optimized away
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:04:04 2016
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Subject: [Bug bootstrap/69513] LTO bootstrap fails with bootstrap-profiled during linking gnat1 in stagefeedback
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:01:24 2016
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Subject: [Bug sanitizer/66401] g++.dg/ubsan/vla-1.C FAILs with PIE
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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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:00:49 2016
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Subject: [Bug target/67710] FAIL: gcc.dg/darwin-*version-*.c (test for excess errors) with Xcode 7
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:02:13 2016
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Subject: [Bug tree-optimization/68644] [6/7 Regression] FAIL: gcc.dg/tree-ssa/ivopts-lt-2.c scan-tree-dump-times ivopts "PHI <p_" 1
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/71208] [6 regression] mmix: C++ code fails to link
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug sanitizer/67513] ASAN: Not optimal shadow value check (unlikely condition checked in fast path)
Date: Wed, 21 Dec 2016 10:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug fortran/77703] [6/7 Regression] ICE on assignment to pointer function
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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> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug rtl-optimization/78580] [6/7 Regression] Segfault in gcc with multilib (-m32) and -ffixed-*
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:03:36 2016
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Subject: [Bug target/71112] [6/7 Regression] ICE with -fpie on aarch64 ILP32 big-endian
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:06:41 2016
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Subject: [Bug target/70927] avx512dq instructions emitted even with -mavx512vl -mno-avx512dq
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:06:29 2016
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Subject: [Bug c++/71290] [6/7 Regression] Flexible array member is not diagnosed with -pedantic
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:04:09 2016
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Subject: [Bug ipa/70582] [6/7 regression] gcc.dg/attr-weakref-1.c FAILs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/35514] Gcc shoud generate symbol type for undefined symbol
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/68939] ICE or wrong code with OpenMP privatization of reference to VLAs
Date: Wed, 21 Dec 2016 10:59:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:07:23 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/66195] Optimize _GLIBCXX_GUARD_TEST_AND_ACQUIRE and _GLIBCXX_GUARD_SET_AND_RELEASE for PowerPC
Date: Wed, 21 Dec 2016 11:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:06:30 2016
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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++/77639] [6 Regression] ICE on x86_64-linux-gnu (internal compiler error: tree check: accessed elt 1 of tree_vec with 0 elts in unify, at cp/pt.c:19674)
Date: Wed, 21 Dec 2016 11:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:07:22 2016
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Subject: [Bug middle-end/28628] Not forcing alignment of arrays in structs with -fsection-anchors
Date: Wed, 21 Dec 2016 11:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/64253] IPA inline analysis processes a code transform operation
Date: Wed, 21 Dec 2016 11:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/69940] gcc.c-torture/execute/alias-3.c FAILs with Solaris/x86 as
Date: Wed, 21 Dec 2016 11:00:00 -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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:07:42 2016
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Subject: [Bug tree-optimization/78869] [6/7 Regression] Strange __builtin_memcpy optimisations
Date: Wed, 21 Dec 2016 11:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:10:49 2016
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Subject: [Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548458-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:11:20 2016
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Subject: [Bug tree-optimization/71947] [6 Regression] x ^ y not folded to 0 if x == y by DOM
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:01 2016
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Subject: [Bug c++/78774] [6 Regression] ICE in constexpr string literals and templates
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:12:46 2016
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Subject: [Bug middle-end/70831] [6/7 Regression] FTBFS: Build fails with bootstrap-lto and profiledbootstrap
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:40 2016
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Subject: [Bug c++/58796] throw nullptr not caught by catch(type*)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548462-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:13:50 2016
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Subject: [Bug tree-optimization/71691] [6/7 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu (Floating point exception)
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548445-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:08:06 2016
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Subject: [Bug tree-optimization/77975] [6/7 Regression] Missed optimization for some small constants
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:25 2016
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Subject: [Bug tree-optimization/71563] [6/7 Regression] Regression in GCC-7.0.0's optimizer.
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548457-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:11:11 2016
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Subject: [Bug c/67819] -Wduplicated-cond should take macros into account
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:04:51 2016
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Subject: [Bug middle-end/71907] [6 regression] missing buffer overflow warnings with -flto
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548454-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:10:25 2016
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Subject: [Bug c++/70019] VLA size overflow not detected
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:12:32 2016
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Subject: [Bug c++/68510] [concepts] ICE: in gimplify_var_or_parm_decl, at gimplify.c:1827
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/69639] [6/7 Regression] FAIL: gcc.c-torture/compile/limits-exprparen.c
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/67321] [ARM] Exploit Wide Add operations when appropriate
Date: Wed, 21 Dec 2016 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548469-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:06 2016
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Subject: [Bug c++/77967] ICE in cp_parser_type_name, at cp/parser.c:16419 (trying to add a method to a template alias)
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548467-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:07 2016
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Subject: [Bug target/71342] [6/7 Regression][RL78] set1 / clr1 with !addr16 sometimes doesn't work
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:18 2016
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Subject: [Bug middle-end/77546] [6/7 regression] C++ software renderer performance drop
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:34 2016
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Subject: [Bug c/65452] strcmp (foo, foo) could give a warning
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548473-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:22 2016
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Subject: [Bug ipa/66004] [6/7 Regression]: performance of 26_numerics/random/negative_binomial_distribution/operators/values.cc
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:15 2016
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Subject: [Bug c++/71577] [6/7 regression] ICE on invalid C++11 code (with extra struct initializer) on x86_64-linux-gnu: in digest_init_r, at cp/typeck2.c:1117
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:25 2016
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #47 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:12:17 2016
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Subject: [Bug testsuite/66404] gcc.target/i386/pad-10.c etc. FAIL with PIE
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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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548468-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:10 2016
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Subject: [Bug c++/78282] [6/7 Regression] Overload resolution failure, in parameter pack expansion, inside a template class
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/71419] interrupt attribute silently dropped for Thumb code on armv7-a
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548475-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:28 2016
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Subject: [Bug target/74563] [6/7 regression] Classic MIPS16 (non-MIPS16e) function return broken
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/77493] [6/7 Regression] -fcrossjumping (-O2) on ppc64le causes segfaults (jump to 0x0) (first bad r230091)
Date: Wed, 21 Dec 2016 11:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:55 2016
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Subject: [Bug tree-optimization/71488] [6 Regression] Wrong code for vector comparisons with ivybridge and westmere targets
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/70315] FAIL: gcc.dg/tree-ssa/sra-17.c scan-tree-dump-times esra
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:52 2016
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Subject: [Bug tree-optimization/68128] A huge regression in Parboil v2.5 OpenMP CUTCP test (2.5 times lower performance)
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:16 2016
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Subject: [Bug tree-optimization/70390] [6/7 Regression] internal compiler error: in copy_loop_close_phi_args, at graphite-isl-ast-to-gimple.c:2114
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:37 2016
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Subject: [Bug c/65430] Missing -Wsequence-point warning with COMPOUND_EXPRs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:02 2016
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Subject: [Bug ipa/70583] [6/7 Regression] FAIL: g++.old-deja/g++.abi/vtable2.C -std=gnu++98 execution test
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:49 2016
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Subject: [Bug middle-end/70689] [6 Regression] ICE on valid code at -O1 in 32-bit mode on x86_64-linux-gnu in curr_insn_transform, at lra-constraints.c:3564
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:45 2016
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Subject: [Bug target/71778] [6/7 Regression][ARM] ICE using non-constant argument to Neon intrinsic that requires constant arguments
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/71294] [6 Regression] ICE in gen_add2_insn, at optabs.c:4442 on powerpc64le-linux
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548490-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:48 2016
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Subject: [Bug target/65846] Optimize data access in PIE with copy reloc
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:41 2016
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Subject: [Bug c++/70768] [6/7 Regression] Increased compilation time
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:23 2016
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Subject: [Bug c++/66398] g++.dg/abi/anon1.C FAILs with PIE
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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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:42 2016
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Subject: [Bug fortran/71706] [6/7 Regression] [Coarray] ICE on using sync images with integer(kind<>4), with -fcoarray=lib -fcheck=bounds
Date: Wed, 21 Dec 2016 11:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:14:58 2016
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Subject: [Bug target/77439] [6/7 regression] wrong code for sibcall with longcall, APCS frame and VFP
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:28 2016
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Subject: [Bug c++/77907] [6 Regression] Add "const" to argument of constexpr constructor causes the object to be left in unconstructed state
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:07 2016
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Subject: [Bug c++/78645] [6/7 Regression] ICE on invalid C++ code on x86_64-linux-gnu (Segmentation fault, cxx_eval_call_expression)
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:13 2016
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Subject: [Bug rtl-optimization/69633] [6/7 Regression] Redundant move is generated after r228097
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:21 2016
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Subject: =?UTF-8?B?W0J1ZyBjLzY1ODkxXSAtV2xvZ2ljYWwtb3Agbm93IHdhcm5zIGFib3V0IGxv?= =?UTF-8?B?Z2ljYWwg4oCYYW5k4oCZIG9mIGVxdWFsIGV4cHJlc3Npb25zIGV2ZW4gd2hl?= =?UTF-8?B?biBkaWZmZXJlbnQgdHlwZXMvc2l6ZW9mcyBhcmUgaW52b2x2ZWQ=?Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548503-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:30 2016
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Subject: [Bug fortran/68009] [6/7 Regression] prototype for gfortran_runtime_error with inline matmul
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548455-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:10:04 2016
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Subject: [Bug fortran/67420] gfortran.dg/norm2_3.f90 FAILs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548500-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:19 2016
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Subject: [Bug target/61551] [NEON] alter costs to allow use of post-indexed addressing modes for VLD{2..4}/VST{2..4}
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548496-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:01 2016
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Subject: [Bug tree-optimization/71016] [6/7 Regression] Redundant sign extension with conditional __builtin_clzl
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548492-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:54 2016
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Subject: [Bug tree-optimization/69728] [6/7 Regression] internal compiler error: in outer_projection_mupa, at graphite-sese-to-poly.c:1175
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:57 2016
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Subject: [Bug c++/77581] [5/6/7 Regression] ICE: instantiate_template_1, cp/pt.c:17391
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug ada/70867] [6 regression] access discriminant in return aggregate wrongly detected as dangling
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/78856] [6/7 Regression] wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes)
Date: Wed, 21 Dec 2016 11:04:00 -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> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug middle-end/61225] [5/6/7 Regression] Several new failures after r210458 on x86_64-*-* with -m32
Date: Wed, 21 Dec 2016 11:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548511-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:56 2016
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Subject: [Bug target/71321] [6/7 Regression] x86: worse code for uint8_t % 10 and / 10
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548505-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:38 2016
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Subject: [Bug c++/72759] [6 Regression] ICE on invalid C++ code on x86_64-linux-gnu (Segmentation fault, tree_class_check, ocp_convert)
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548509-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:49 2016
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Subject: [Bug fortran/70598] Fortran OpenACC host_data construct ICE
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548508-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:47 2016
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Subject: [Bug tree-optimization/71142] [6/7 Regression] ICE: Segmentation fault in ssa_default_def (graphite)
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548514-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:59 2016
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Subject: [Bug c++/71570] [6/7 regression] ICE on invalid variable capture in cxx_incomplete_type_diagnostic, at cp/typeck2.c:551
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548504-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:41 2016
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Subject: =?UTF-8?B?W0J1ZyBjKysvNzg2OTNdIFs2LzcgUmVncmVzc2lvbl0gQm9ndXMgJ2luY29u?= =?UTF-8?B?c2lzdGVudCBkZWR1Y3Rpb24gZm9yIOKAmGF1dG/igJknIGVycm9yIHdoZW4g?= =?UTF-8?B?aGF2aW5nIGEgZGVwZW5kZW50IGluaXRpYWxpemVyIGFuZCBhIG5vbmRlcGVu?= =?UTF-8?B?ZGVudCBvbmUgaW4gdGhlIHNhbWUgZGVjbGFyYXRpb24=?Date: Wed, 21 Dec 2016 11:05:00 -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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548513-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:01 2016
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Subject: [Bug fortran/78518] [6/7 Regression] Warning format regression
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548506-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:32 2016
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Subject: [Bug tree-optimization/71076] [6/7 Regression] error: missing PHI def
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548510-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:52 2016
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Subject: [Bug c++/71638] [6/7 Regression] ICE on invalid C++ code on x86_64-linux-gnu with -Wall (internal compiler error: non-constant element in constant CONSTRUCTOR)
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:51 2016
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Subject: [Bug tree-optimization/77362] [6/7 Regression] [graphite] ICE in sese_build_liveouts_use w/ -O2 -floop-nest-optimize
Date: Wed, 21 Dec 2016 11:05:00 -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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548507-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:16:44 2016
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Subject: [Bug tree-optimization/69675] [6/7 Regression] [graphite] ICE: verify_ssa failed (definition in block 42 does not dominate use in block 34)
Date: Wed, 21 Dec 2016 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548516-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:08 2016
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Subject: [Bug c++/72813] [6/7 Regression] atomic header cannot be compiled into translation unit with -fkeep-inline-functions
Date: Wed, 21 Dec 2016 11:06:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548520-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:23 2016
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Subject: [Bug c++/64266] Can GCC produce local mergeable symbols for *.__FUNCTION__ and *.__PRETTY_FUNCTION__ functions?
Date: Wed, 21 Dec 2016 11:06:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:21 2016
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Subject: [Bug c++/77347] [6/7 Regression] Incorrect auto deduction failure in template class member function
Date: Wed, 21 Dec 2016 11:06:00 -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> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:11 2016
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Subject: [Bug fortran/78881] New: [F03] reading from string with DTIO procedure does not work properly
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Bug ID: 78881
Summary: [F03] reading from string with DTIO procedure does not
work properly
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From
https://software.intel.com/en-us/forums/intel-visual-fortran-compiler-for-windows/topic/706063:
module t_m
use, intrinsic :: iso_fortran_env, only : iostat_end, iostat_eor,
output_unit
implicit none
private
type, public :: t
private
character(len=:), allocatable :: m_s
contains
!private
procedure, pass(this), private :: read_t
generic :: read(formatted) => read_t
end type t
contains
subroutine read_t(this, lun, iotype, vlist, istat, imsg)
! argument definitions
class(t), intent(inout) :: this
integer, intent(in) :: lun
character(len=*), intent(in) :: iotype
integer, intent(in) :: vlist(:)
integer, intent(out) :: istat
character(len=*), intent(inout) :: imsg
!.. Local variables
character(len=*), parameter :: sfmt = "(*(g0))"
character(len=1) :: c
integer :: i
i = 0
loop_read: do
i = i + 1
read( unit=lun, fmt="(a)", iostat=istat, iomsg=imsg ) c
select case ( istat )
case ( 0 )
write( output_unit, fmt=sfmt) "i = ", i, ", c = ", c
case ( iostat_end )
write( output_unit, fmt=sfmt) "i = ", i, ", istat = iostat_end"
exit loop_read
case ( iostat_eor )
write( output_unit, fmt=sfmt) "i = ", i, ", istat = iostat_eor"
exit loop_read
case default
write( output_unit, fmt=sfmt) "i = ", i, ", istat = ", istat
exit loop_read
end select
end do loop_read
return
end subroutine read_t
end module t_m
program p
use t_m, only : t
implicit none
character(len=:), allocatable :: s
type(t) :: foo
character(len=256) :: imsg
integer :: istat
s = "Hello"
read( unit=s, fmt=*, iostat=istat, iomsg=imsg ) foo
if ( istat /= 0 ) then
print *, "istat = ", istat
print *, imsg
end if
stop
end program p
After compiling this with current trunk, the runtime output is:
i = 1, c = e
i = 2, c = l
i = 3, c = l
i = 4, c = o
i = 5, istat = iostat_end
istat = -1
End of file
It seems like the first character is being swallowed somewhere ...
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GCC 6.3 is being released, adjusting target milestone.
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GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug fortran/66089] [6/7 Regression] elemental dependency mishandling when derived types are involved
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GCC 6.3 is being released, adjusting target milestone.
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GCC 6.3 is being released, adjusting target milestone.
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GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/71121] [6 Regression] Spurious warning: "the address of [...] will never be NULL [-Waddress]"
Date: Wed, 21 Dec 2016 11:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548527-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:44 2016
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Subject: [Bug c/71602] [6 regression] ICE on __builtin_va_arg in build_va_arg, at c-family/c-common.c:5810
Date: Wed, 21 Dec 2016 11:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug testsuite/70150] Additonal test failures with --enable-default-pie
Date: Wed, 21 Dec 2016 11:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548448-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:01 2016
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Subject: [Bug tree-optimization/69580] [6/7 Regression] From 26/7 seconds to 10 minutes moving from gcc 5.3.1 to gcc 6.0.0
Date: Wed, 21 Dec 2016 11:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548531-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:56 2016
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Subject: [Bug ipa/78027] [6/7 Regression] ICE in new_oacc_loop_routine, at omp-low.c:19000
Date: Wed, 21 Dec 2016 11:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:52 2016
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Subject: [Bug target/66207] Switch alpha to LRA
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548533-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:18:01 2016
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #37 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:18:04 2016
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Subject: [Bug rtl-optimization/70703] [6/7 regression] Regression in register usage on x86
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548446-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:01 2016
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Subject: [Bug rtl-optimization/68749] FAIL: gcc.dg/ifcvt-4.c scan-rtl-dump ce1 "2 true changes made"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:15:03 2016
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Subject: [Bug tree-optimization/71144] [6/7 Regression] isl_aff.c:1001: position out of bounds
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:18:15 2016
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Subject: [Bug c++/70621] [6/7 Regression] ICE on invalid code at -O1 and above on x86_64-linux-gnu in record_reference, at cgraphbuild.c:64
Date: Wed, 21 Dec 2016 11:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:09:46 2016
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Subject: [Bug c++/78572] [6/7 Regression] internal compiler error: in output_constructor_regular_field, at varasm.c:4968
Date: Wed, 21 Dec 2016 11:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:18:18 2016
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Subject: [Bug tree-optimization/71518] [6 Regression] wrong code at -O3 on x86_64-linux-gnu in 64-bit mode (not in 32-bit mode)
Date: Wed, 21 Dec 2016 11:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug target/66960] Add interrupt attribute to x86 backend
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548535-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:18:07 2016
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Subject: [Bug fortran/77371] [6/7 Regression] ICE in force_constant_size, at gimplify.c:671 (... and others)
Date: Wed, 21 Dec 2016 11:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548536-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:18:10 2016
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Subject: [Bug fortran/68649] [6/7 Regression] note: code may be misoptimized unless -fno-strict-aliasing is used
Date: Wed, 21 Dec 2016 11:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548529-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:49 2016
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Subject: [Bug fortran/65024] [OOP] unlimited polymorphic pointer structure not built when it should be
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548523-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:17:30 2016
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Subject: [Bug middle-end/68733] [6/7 Regression] FAIL: libgomp.c/target-29.c (internal compiler error)
Date: Wed, 21 Dec 2016 11:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:08:06 2016
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Subject: [Bug target/67352] [avr] incorrect warning with -Waddr-space-convert and array in struct in __flash
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c/39589] make -Wmissing-field-initializers=2 work with "designated initializers" ?
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug c++/70588] SIGBUS on a VLA larger than SIZE_MAX / 2
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug middle-end/71654] [6 Regression] missing VRP optimization on c++ unsigned char and short expressions
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug tree-optimization/78343] [6 Regression] Loop is not eliminated
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug fortran/68887] [6/7 regression] gfortran.dg/coarray/event_[12].f90 -fcoarray=lib -O2 -lcaf_single -latomic fails
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
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Subject: [Bug middle-end/77959] ICE in ix86_decompose_address, at i386/i386.c:14954
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.3 is being released, adjusting target milestone.
>From gcc-bugs-return-548545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:19:09 2016
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From: "lcid-fire at gmx dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78882] New: std::bind not working with templated function
Date: Wed, 21 Dec 2016 11:18:00 -0000
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Bug ID: 78882
Summary: std::bind not working with templated function
Product: gcc
Version: unknown
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Priority: P3
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Assignee: unassigned at gcc dot gnu.org
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The following does not compile on GCC up to 7 while working fine in clang and
icc:
#include <functional>
#include <string>
struct Bar {
template <typename T>
T* bar(const char*) {
return nullptr;
}
};
struct In {
};
template <typename T>
auto anonymousWrap(Bar& bar, std::string const& name, const char* other) {
auto res = bar.bar<T>(name.c_str());
return res;
};
int main() {
using namespace std::placeholders;
std::bind(anonymousWrap<In>, _1, _2, "other");
return 0;
}
>From gcc-bugs-return-548546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:19:47 2016
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Subject: [Bug c++/78882] std::bind not working with templated function
Date: Wed, 21 Dec 2016 11:19:00 -0000
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--- Comment #1 from lcid-fire at gmx dot net ---
Flags are -std=c++14 and the actual problem seems to be templates combined with
auto:
#include <functional>
struct In {
};
template <typename T>
auto anonymousWrap() {
return T();
};
int main() {
using namespace std::placeholders;
std::bind(anonymousWrap<In>);
return 0;
}
>From gcc-bugs-return-548544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:19:16 2016
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From: "venkataramanan.kumar at amd dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 11:19:00 -0000
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--- Comment #12 from Venkataramanan <venkataramanan.kumar at amd dot com> ---
(In reply to Allan Jensen from comment #11)
> Btw, did you benchmark store splitting on AMD? It is also enabled for BDVER
> and ZNVER1.
I have not done that.
As per SWOG for AMD15h (BDVER) it is advisable to split 256 bit stores.
Also there is a old bug report which says splitting of store is better.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49089
>From gcc-bugs-return-548547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:25:23 2016
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Subject: [Bug ada/78845] Inverse (Real_Matrix) result has wrong bounds
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simon at pushface dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #40356|0 |1
is obsolete| |
--- Comment #2 from simon at pushface dot org ---
Created attachment 40386
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40386&action=edit
Reproducer (update 1)
Added check for Ada.Numerics.Complex_Arrays.
>From gcc-bugs-return-548548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:25:48 2016
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Subject: [Bug ada/78845] Inverse (Real_Matrix) result has wrong bounds
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--- Comment #3 from simon at pushface dot org ---
Same problem with Ada.Numerics.Complex_Arrays.
>From gcc-bugs-return-548549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:48:57 2016
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From: "dhowells at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/72785] [7 Regression] kernel build error since r236831
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--- Comment #21 from dhowells at redhat dot com <dhowells at redhat dot com> ---
(In reply to Markus Trippelsdorf from comment #20)
> *** Bug 78879 has been marked as a duplicate of this bug. ***
Kernel bug or not, it should be noted that this means that you cannot use gcc
from r236831 to compile any kernel from the introduction and use of ilog2() to
the current day - and these kernel versions cannot be retroactively fixed.
>From gcc-bugs-return-548550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 11:59:47 2016
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/72785] [7 Regression] kernel build error since r236831
Date: Wed, 21 Dec 2016 11:59:00 -0000
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--- Comment #22 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to dhowells@redhat.com from comment #21)
> (In reply to Markus Trippelsdorf from comment #20)
> > *** Bug 78879 has been marked as a duplicate of this bug. ***
>
> Kernel bug or not, it should be noted that this means that you cannot use
> gcc from r236831 to compile any kernel from the introduction and use of
> ilog2() to the current day - and these kernel versions cannot be
> retroactively fixed.
No. I build allmodconfig kernels regularly with gcc trunk and it works fine.
>From gcc-bugs-return-548551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 12:01:26 2016
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/78881] [F03] reading from string with DTIO procedure does not work properly
Date: Wed, 21 Dec 2016 12:01:00 -0000
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--- Comment #1 from janus at gcc dot gnu.org ---
It seems that this problem not only appears when reading from internal units,
but also from std input:
module t_m
implicit none
type, public :: t
character(len=:), allocatable :: m_s
contains
procedure, pass(this) :: read_t
generic :: read(formatted) => read_t
end type
contains
subroutine read_t(this, lun, iotype, vlist, istat, imsg)
! argument definitions
class(t), intent(inout) :: this
integer, intent(in) :: lun
character(len=*), intent(in) :: iotype
integer, intent(in) :: vlist(:)
integer, intent(out) :: istat
character(len=*), intent(inout) :: imsg
! local variables
character :: c
integer :: i
do i=1,5
read( unit=lun, fmt="(a1)", iostat=istat, iomsg=imsg ) c
select case ( istat )
case ( 0 )
write( *, *) "i = ", i, ", c = ", c
case default
write( *, *) "i = ", i, ", istat = ", istat, imsg
return
end select
end do
end subroutine
end module
program p
use t_m
implicit none
! character(len=5) :: s = "Hello"
type(t) :: foo
read( unit=*, fmt=*) foo
end
>From gcc-bugs-return-548552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 12:05:35 2016
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Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 12:05:00 -0000
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--- Comment #13 from Allan Jensen <linux at carewolf dot com> ---
The question is if the unaligned store is still slow on Excavator and Ryzen
which support AVX2. As far as I understand the bulldozer architectures just
prefer split AVX because it was basically emulating them with 128-bit micro-ops
anyway.
>From gcc-bugs-return-548553-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 12:40:55 2016
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Subject: [Bug fortran/78866] ICE in gimplify_adjust_omp_clauses_1, at gimplify.c:8721
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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 40387
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40387&action=edit
gcc7-pr78866.patch
Untested fix.
>From gcc-bugs-return-548554-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 12:50:34 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/77905] [5/6 Regression] ICE at -Os and above in both 32-bit and 64-bit modes on x86_64-linux-gnu (internal compiler error: in ipa_comdats, at ipa-comdats.c:352)
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 12:49:44 2016
New Revision: 243850
URL: https://gcc.gnu.org/viewcvs?rev=243850&root=gcc&view=rev
Log:
Backported from mainline
2016-12-13 Jakub Jelinek <jakub@redhat.com>
PR ipa/77905
* ipa-pure-const.c (cdtor_p): Return true for
DECL_STATIC_{CON,DE}STRUCTOR even when it is
DECL_LOOPING_CONST_OR_PURE_P.
* g++.dg/ipa/pr77905.C: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/g++.dg/ipa/pr77905.C
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/ipa-pure-const.c
branches/gcc-6-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548555-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 12:52:51 2016
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Subject: [Bug c/77767] [5/6/7 Regression] Side-effect from VLA array parameters lost
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77767
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 12:52:06 2016
New Revision: 243851
URL: https://gcc.gnu.org/viewcvs?rev=243851&root=gcc&view=rev
Log:
PR c/77767
* c-decl.c (grokdeclarator): If *expr is non-NULL, append expression
to *expr instead of overwriting it.
* gcc.c-torture/execute/pr77767.c: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/gcc.c-torture/execute/pr77767.c
Modified:
branches/gcc-6-branch/gcc/c/ChangeLog
branches/gcc-6-branch/gcc/c/c-decl.c
branches/gcc-6-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Wed, 21 Dec 2016 12:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78879
--- Comment #5 from Yuan Pengfei <coolypf at qq dot com> ---
(In reply to Markus Trippelsdorf from comment #3)
> (In reply to Yuan Pengfei from comment #2)
> > (In reply to Markus Trippelsdorf from comment #1)
> > > See discussion in PR72785.
> >
> > I am using GCC 6.2.1. Is it the same problem?
>
> Yes, I think so. The compiler is under no obligation to optimize the
> ____ilog2_NaN call away. It looks like a kernel bug.
I don't think so. In this case, the value of sector_size is constant (256, 512,
1024, 2048, 4096) and the ____ilog2_NaN call can be optimized away.
It is after enabling the -fprofile-generate option when the compiler thinks the
____ilog2_NaN call can not be optimized away.
Reference source code:
http://lxr.free-electrons.com/source/drivers/scsi/sd.c?v=3.10#L2163
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Wed, 21 Dec 2016 13:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78879
--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Yuan Pengfei from comment #5)
> (In reply to Markus Trippelsdorf from comment #3)
> > (In reply to Yuan Pengfei from comment #2)
> > > (In reply to Markus Trippelsdorf from comment #1)
> > > > See discussion in PR72785.
> > >
> > > I am using GCC 6.2.1. Is it the same problem?
> >
> > Yes, I think so. The compiler is under no obligation to optimize the
> > ____ilog2_NaN call away. It looks like a kernel bug.
>
> I don't think so. In this case, the value of sector_size is constant (256,
> 512, 1024, 2048, 4096) and the ____ilog2_NaN call can be optimized away.
>
> It is after enabling the -fprofile-generate option when the compiler thinks
> the ____ilog2_NaN call can not be optimized away.
>
> Reference source code:
> http://lxr.free-electrons.com/source/drivers/scsi/sd.c?v=3.10#L2163
Yes, sorry I got that the wrong way round.
The compiler is under no obligation not to duplicate (optimize) and thereby
produce that ____ilog2_NaN undefined symbol.
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Subject: [Bug libstdc++/71444] Error constants for MinGW-w64
Date: Wed, 21 Dec 2016 13:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71444
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Dec 21 13:09:13 2016
New Revision: 243853
URL: https://gcc.gnu.org/viewcvs?rev=243853&root=gcc&view=rev
Log:
PR 71444 define more error constants for mingw-w64
PR libstdc++/71444
* config/os/mingw32-w64/error_constants.h
(address_family_not_supported, address_in_use, address_not_available)
(already_connected, connection_aborted, connection_already_in_progress)
connection_refused, connection_reset, cross_device_link)
(destination_address_required, host_unreachable, message_size)
(network_down, network_reset, network_unreachable, no_buffer_space)
(no_protocol_option, not_a_socket, not_connected, operation_canceled)
(operation_in_progress, operation_not_supported, protocol_error)
(protocol_not_supported, too_many_links, too_many_symbolic_link_levels)
(value_too_large, wrong_protocol_type): Define.
(bad_message, identifier_removed, no_link, no_message_available)
(no_message, no_stream_resources, not_a_stream, owner_dead)
(state_not_recoverable, stream_timeout, text_file_busy): Define
conditionally.
* testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc:
Guard test for no_message with _GLIBCXX_HAVE_ENOMSG.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/config/os/mingw32-w64/error_constants.h
trunk/libstdc++-v3/testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc
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From: "gjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/78883] New: [avr] ICE triggered by change to combine.c (r243578)
Date: Wed, 21 Dec 2016 13:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78883
Bug ID: 78883
Summary: [avr] ICE triggered by change to combine.c (r243578)
Product: gcc
Version: 7.0
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r243578 triggers several ICEs in avr-gcc test suite; amongst them:
$ avr-gcc /gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr26833.c
-S -O1 -mmcu=avr4 -S -da
/gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr26833.c: In
function 'yasm_lc3b__parse_insn':
/gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr26833.c:19:1:
error: insn does not satisfy its constraints:
}
^
(jump_insn 58 98 59 9 (set (pc)
(if_then_else (eq (and:HI (reg:HI 31 r31)
(const_int 1 [0x1]))
(const_int 0 [0]))
(label_ref 70)
(pc)))
"/gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr26833.c":11 415
{*sbrx_and_branchhi}
(int_list:REG_BR_PROB 375 (nil))
-> 70)
/gnu/gcc.gnu.org/trunk/gcc/testsuite/gcc.c-torture/compile/pr26833.c:19:1:
internal compiler error: in extract_constrain_insn, at recog.c:2213
0x9840e3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../../gcc.gnu.org/trunk/gcc/rtl-error.c:108
0x98410f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../../gcc.gnu.org/trunk/gcc/rtl-error.c:119
0x95b61d extract_constrain_insn(rtx_insn*)
../../../gcc.gnu.org/trunk/gcc/recog.c:2213
0x939b45 reload_cse_simplify_operands
../../../gcc.gnu.org/trunk/gcc/postreload.c:391
0x93a725 reload_cse_simplify
../../../gcc.gnu.org/trunk/gcc/postreload.c:179
0x93a725 reload_cse_regs_1
../../../gcc.gnu.org/trunk/gcc/postreload.c:218
0x93c3ab reload_cse_regs
../../../gcc.gnu.org/trunk/gcc/postreload.c:64
0x93c3ab execute
../../../gcc.gnu.org/trunk/gcc/postreload.c:2342
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
georg@pandora:~/test>
R31 is the last hard reg (8-bit) and must never be allocated to HImode.
GCC configured as:
$ ../../gcc.gnu.org/trunk/configure --target=avr
--prefix=/local/gnu/install/gcc-7 --disable-shared --disable-nls --with-dwarf2
--enable-target-optspace=yes --with-gnu-as --with-gnu-ld
--enable-checking=release --enable-languages=c,c++
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Subject: [Bug middle-end/78884] New: ICE when gimplifying VLA in OpenMP SIMD region
Date: Wed, 21 Dec 2016 13:15:00 -0000
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Bug ID: 78884
Summary: ICE when gimplifying VLA in OpenMP SIMD region
Product: gcc
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Noticed this ICE when looking at OpenMP gimplification/lowering:
void use(int*);
void f(int n)
{
#pragma omp simd
for (int i=0; i<1024; i++)
{
int t[n];
use(t);
}
}
$ gcc/cc1 -fopenmp t.c
will ICE (segfault) in omp_add_variable() due to NULL DECL_VALUE_EXPR on 't'.
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Subject: [Bug libstdc++/71444] Error constants for MinGW-w64
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on gcc trunk. Assuming no problems show up this is suitable for
backporting to the branches, so I'll leave the bug open for now.
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Subject: [Bug sanitizer/77963] inconsistent (false?) leaks detection.
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--- Comment #2 from Pawel Sikora <pawel_sikora at zoho dot com> ---
(In reply to Kostya Serebryany from comment #1)
> lsan does not work with ptrace.
> There is https://github.com/google/sanitizers/issues/728 for it.
> We don't have plans to fix it, but the change I sent for review yesterday
> causes lsan to complain loudly instead of producing false reports.
this change clarify the situation with shiny message but doesn't help to much
in the real development scenario. under gdb/strace session the process will
terminate with exit code 1 and may breaks application flow due to unexpected
exit code of the child process. in such case i need to setup manually for debug
session the ASAN_OPTIONS=detect_leaks=0 to workaround the lsan die(). it would
be better to omit the die() in such case (no ptrace-available).
>From gcc-bugs-return-548563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 13:24:56 2016
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From: "venkataramanan.kumar at amd dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 13:24:00 -0000
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--- Comment #14 from Venkataramanan <venkataramanan.kumar at amd dot com> ---
(In reply to Allan Jensen from comment #13)
> The question is if the unaligned store is still slow on Excavator and Ryzen
> which support AVX2. As far as I understand the bulldozer architectures just
> prefer split AVX because it was basically emulating them with 128-bit
> micro-ops anyway.
I have to benchmark and then comeback on store splitting.
>From gcc-bugs-return-548564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 13:27:59 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78762] Regression: Splitting unaligned AVX loads also when AVX2 is enabled
Date: Wed, 21 Dec 2016 13:27:00 -0000
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--- Comment #15 from Venkataramanan <venkataramanan.kumar at amd dot com> ---
Considering this PR, removing the tuning (splitting of unaligned avx256 loads)
for generic is suggested.
>From gcc-bugs-return-548565-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 13:31:06 2016
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78826] jump bypasses non-POD
Date: Wed, 21 Dec 2016 13:31:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Krzysztof Laskowski from comment #3)
> (In reply to Jonathan Wakely from comment #2)
> > I assume GCC 4.5 stopped diagnosing it due to the revised specification
> > which only cares about trivial constructor or trivial destructor, not
> > PODness.
> I couldn't actually find any clause allowing jump over trivially constructed
> variable in ISO/IEC 14882:1998 nor ISO/IEC 14882:2003. Moreover, icc (13,
> 16, 17) and clang (3.0-3.9) warn and err, respectively, on example.
I didn't suggest you'd find it in C++03.
> It seems to correlate with introducing c++0x support in gcc.
Yes, obviously. Because the refined rule was introduced for C++11. That's what
I meant by revised specification.
> https://gcc.gnu.org/gcc-4.5/changes.html
> "Diagnostics that used to complain about passing non-POD types to ... or
> jumping past the declaration of a non-POD variable now check for triviality
> rather than PODness, as per C++0x."
So it's even documented as being deliberate, isn't that clear?
> > Giving a diagnostic here would just be pedantic and unhelpful.
> I agree it's harmless to bypass trivially constructed variable. Does it mean
> that it's a deliberate deviation from standard for the sake of ease of c++11
> implementation at the cost of portability/conformance?
No, not for the ease of implementation. For the benefit of users.
I repeat: Giving a diagnostic here would just be pedantic and unhelpful.
The old rule doesn't prevent bugs, it doesn't make code faster, it has no
advantages. The only reason the C++03 rule was in terms of POD was because we
didn't have a better property to use. What matters is whether non-trivial
initialization or destruction gets bypassed, and with modern C++ we are able to
express the rule more precisely.
Jason, do you see any advantage to making this a pedwarn for -std=c++98, or
should we just close as WONTFIX?
>From gcc-bugs-return-548566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 13:50:59 2016
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Subject: [Bug testsuite/52641] Test cases fail for 16-bit int targets
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--- Comment #12 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Wed Dec 21 13:50:11 2016
New Revision: 243854
URL: https://gcc.gnu.org/viewcvs?rev=243854&root=gcc&view=rev
Log:
gcc/testsuite/
PR testsuite/52641
* gcc.dg/builtin-object-size-16.c (ia0, ia1, ia9): Handle case
where neither short nor int has a size of 4; use long.
* gcc.dg/builtin-object-size-17.c: Same.
* gcc.dg/builtin-stringop-chk-1.c (test2) <struct S>: Use int32_t
for components as 4 components are supposed to occupy 16 bytes.
* gcc.dg/pr78408-1.c: Require target size32plus.
* gcc.dg/pr78408-2.c: Same.
* gcc.dg/tree-ssa/pr78428.c. Require target int32plus.
* gcc.dg/tree-ssa/tailcall-7.c: Require target trampolines.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/builtin-object-size-16.c
trunk/gcc/testsuite/gcc.dg/builtin-object-size-17.c
trunk/gcc/testsuite/gcc.dg/builtin-stringop-chk-1.c
trunk/gcc/testsuite/gcc.dg/pr78408-1.c
trunk/gcc/testsuite/gcc.dg/pr78408-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr78428.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/tailcall-7.c
>From gcc-bugs-return-548567-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 13:51:11 2016
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Subject: [Bug c++/69681] C/C++ FEs do not consider comparisons of distinct function pointers to be constant expressions
Date: Wed, 21 Dec 2016 13:51:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There's no need to determine the addresses, only the truth of the inequality.
The standard says distinct functions have distinct addresses. Yes, linker
trickery can break that, but it's reasonable to rely on it because it's
guaranteed by the standard. Code that cares about addresses of functions
(typically when registering callbacks) is unlikely to care about comparing
addresses of builtins or functions in libgcc, only for user code.
>From gcc-bugs-return-548569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:06:29 2016
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Subject: [Bug c++/78882] std::bind not working with templated function
Date: Wed, 21 Dec 2016 14:06:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |RESOLVED
Version|unknown |6.3.0
Resolution|--- |DUPLICATE
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This isn't a problem with std::bind, but converting a function template into a
pointer:
template<typename F> void bind(F) { }
template <typename T>
auto anonymousWrap() {
return T();
};
int main() {
bind(anonymousWrap<int>);
}
This is a dup of Bug 64194
*** This bug has been marked as a duplicate of bug 64194 ***
>From gcc-bugs-return-548568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:06:29 2016
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Subject: [Bug c++/64194] [C++14] <unresolved overloaded function type> for function template with auto return
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lcid-fire at gmx dot net
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 78882 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-548570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:10:40 2016
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Subject: [Bug c++/78843] error: 'functionname' was not declared in this scope
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> are different identifiers, C/C++ is case sensitive.
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Subject: [Bug c++/64194] [C++14] <unresolved overloaded function type> for function template with auto return
Date: Wed, 21 Dec 2016 14:12:00 -0000
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--- Comment #2 from lcid-fire at gmx dot net ---
Shouldn't the status be confirmed?
>From gcc-bugs-return-548572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:15:39 2016
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Subject: [Bug rtl-optimization/78883] [avr] ICE triggered by change to combine.c (r243578)
Date: Wed, 21 Dec 2016 14:15:00 -0000
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--- Comment #1 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Can you please attach a combine dump?
>From gcc-bugs-return-548573-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:20:55 2016
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Subject: [Bug target/78831] [nvptx] -mgomp -Os init_softstack_frame ICE
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--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Wed Dec 21 14:20:09 2016
New Revision: 243855
URL: https://gcc.gnu.org/viewcvs?rev=243855&root=gcc&view=rev
Log:
nvptx: do not assume that crtl->is_leaf is unset
PR target/78831
* config/nvptx/nvptx.c (init_softstack_frame): Remove assert. Compute
crtl->is_leaf only if unset. Adjust comment.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/nvptx/nvptx.c
>From gcc-bugs-return-548574-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:21:53 2016
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Subject: [Bug target/78831] [nvptx] -mgomp -Os init_softstack_frame ICE
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-548575-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:22:30 2016
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Subject: [Bug c++/64194] [C++14] <unresolved overloaded function type> for function template with auto return
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It is confirmed, and has been since 2014-12-08. If you look at the dropdown
you'll see there is no CONFIRMED status in GCC's bugzilla.
>From gcc-bugs-return-548576-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:23:31 2016
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Subject: [Bug target/78807] Loop optimization trigger bus error
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--- Comment #3 from Mauritz Sundell <m.gcc.gnu.org at alias dot viem.se> ---
I did not have access to a Solaris/sparc machine with GCC 6.
But on Linux/sparc test program do not crash compiled with GCC 6.2.0.
$ uname -a
Linux xxx 4.1.12-80.el6uek.sparc64 #1 SMP Wed Nov 30 03:09:10 PST 2016 sparc64
sparc64 sparc64 GNU/Linux
$ bin/gcc-6.2.0/bin/gcc -m64 -O3 -fPIC -o bug78807 bug78807.c
$ ./bug78807
$
>From gcc-bugs-return-548577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:32:39 2016
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Subject: [Bug c/78885] New: gcac checking too slow to be useful ?
Date: Wed, 21 Dec 2016 14:32:00 -0000
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Bug ID: 78885
Summary: gcac checking too slow to be useful ?
Product: gcc
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I just tried out a plain non-bootstrap build
of gcc trunk using --enable-checking=gcac.
Configure line was
../trunk/configure --prefix=/home/dcb/gcc/results.243837 \
--disable-bootstrap \
--disable-multilib \
--disable-werror \
--enable-checking=gcac \
--enable-languages=c,c++,fortran
In the build, some compilations took over an hour on a 4GHZ
AMD machine. Using ulimit -t 3600 meant the build would not complete.
I checked how many times gcac gets mentioned in this
bug database. To my surprise, only two mentions, so the
gcac checking isn't helping to find bugs very much.
Suggest rework gcac checking option to be fast enough
to be usable.
Splitting gcac into a fast checker that doesn't check much and
a full-fat checker that does as much as the current version
might be the way forward.
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Subject: [Bug c/78885] gcac checking too slow to be useful ?
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Gcac is always collect when ggc_collect is called so yes it will be slow as gc
collecting is slow due to having to mark and sweep over huge amounts of memory
and there are many calls to ggc_collect now. Each new pass gets one new call.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78870
--- Comment #4 from Jan Niklas Hasse <jhasse at bixense dot com> ---
> Great! Please read https://gcc.gnu.org/onlinedocs/libstdc++/manual/appendix_contributing.html especially the part about legal paperwork.
Do you mean the part about legal paperwork in
https://gcc.gnu.org/contribute.html ?
> No. Just look at the existing code and figure out what the equivalent code would be for Windows, and write an alternative implementation e.g. replace calls to POSIX stat() with whatever Windows uses to query file properties, and replace calls to POSIX chmod with whatever Windows uses to change file permissions.
And can I look at how boost::filesystem does this?
>From gcc-bugs-return-548580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:58:50 2016
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Subject: [Bug c/78886] New: gcc Segmentation fault malloc and volatile
Date: Wed, 21 Dec 2016 14:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78886
Bug ID: 78886
Summary: gcc Segmentation fault malloc and volatile
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: prekgeo at yahoo dot com
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Created attachment 40388
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40388&action=edit
test case
$ ./configure --disable-multilib --enable-languages=c --prefix=/home/prekas/gcc
$ uname -a
Linux sciicebpc1 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
$ ../gcc/bin/gcc -v -save-temps -S -O2 gcc_bug.c
Using built-in specs.
COLLECT_GCC=../gcc/bin/gcc
Target: x86_64-pc-linux-gnu
Configured with: ./configure --disable-multilib --enable-languages=c
Thread model: posix
gcc version 6.3.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-S' '-O2' '-mtune=generic'
'-march=x86-64'
/home/prekas/gcc/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.3.0/cc1 -E -quiet -v
-imultiarch x86_64-linux-gnu -iprefix
/home/prekas/gcc/bin/../lib/gcc/x86_64-pc-linux-gnu/6.3.0/ gcc_bug.c
-mtune=generic -march=x86-64 -O2 -fpch-preprocess -o gcc_bug.i
ignoring nonexistent directory
"/home/prekas/gcc/bin/../lib/gcc/x86_64-pc-linux-gnu/6.3.0/../../../../x86_64-pc-linux-gnu/include"
ignoring duplicate directory
"/home/prekas/gcc/bin/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.3.0/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring duplicate directory
"/home/prekas/gcc/bin/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.3.0/include-fixed"
ignoring nonexistent directory
"/home/prekas/gcc/bin/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.3.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/prekas/gcc/bin/../lib/gcc/x86_64-pc-linux-gnu/6.3.0/include
/home/prekas/gcc/bin/../lib/gcc/x86_64-pc-linux-gnu/6.3.0/include-fixed
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-S' '-O2' '-mtune=generic'
'-march=x86-64'
/home/prekas/gcc/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.3.0/cc1
-fpreprocessed gcc_bug.i -quiet -dumpbase gcc_bug.c -mtune=generic
-march=x86-64 -auxbase gcc_bug -O2 -version -o gcc_bug.s
GNU C11 (GCC) version 6.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C11 (GCC) version 6.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: aac98bc8a6db7b45e88f65faa8c8f64b
gcc_bug.c: In function 'foo':
gcc_bug.c:3:6: internal compiler error: Segmentation fault
void foo(void)
^~~
0x9c5cdf crash_signal
../.././gcc/toplev.c:333
0xb131f1 get_stridx
../.././gcc/tree-ssa-strlen.c:195
0xb14e8e handle_builtin_malloc
../.././gcc/tree-ssa-strlen.c:1837
0xb14e8e strlen_optimize_stmt
../.././gcc/tree-ssa-strlen.c:2156
0xb14e8e strlen_dom_walker::before_dom_children(basic_block_def*)
../.././gcc/tree-ssa-strlen.c:2339
0xf4ace2 dom_walker::walk(basic_block_def*)
../.././gcc/domwalk.c:265
0xb12b0f execute
../.././gcc/tree-ssa-strlen.c:2411
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-548581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 14:59:25 2016
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Subject: [Bug rtl-optimization/78883] [avr] ICE triggered by change to combine.c (r243578)
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--- Comment #2 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Created attachment 40389
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40389&action=edit
.combine dump as requested.
Genrated with
$ avr-gcc pr26833.c -S -O1 -mmcu=avr4 -S -fdump-rtl-combine-details
FYI, the error goes away with -Os or -O2.
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Subject: [Bug c/78886] gcc Segmentation fault malloc and volatile
Date: Wed, 21 Dec 2016 14:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78886
--- Comment #1 from George Prekas <prekgeo at yahoo dot com> ---
Created attachment 40390
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40390&action=edit
the preprocessed file
>From gcc-bugs-return-548583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:02:27 2016
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/78877] Missing suggestion for -fsanitizedres
Date: Wed, 21 Dec 2016 15:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78877
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
There's very similar one seen by Jakub in:
https://gcc.gnu.org/ml/gcc-patches/2016-12/msg01765.html
$ ./xgcc -B. -fsanitize=nul /tmp/a.c
xgcc: error: unrecognized argument to -fsanitize= option: ‘nul’
$ ./xgcc -B. -fsanitiz=nul /tmp/a.c
xgcc: error: unrecognized command line option ‘-fsanitiz=nul’; did you mean
‘-fsanitize=null’?
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Subject: [Bug driver/78863] [6/7 Regression] error on -fsanitize suggests invalid -fsanitize=all
Date: Wed, 21 Dec 2016 15:05:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Dec 21 15:05:10 2016
New Revision: 243857
URL: https://gcc.gnu.org/viewcvs?rev=243857&root=gcc&view=rev
Log:
Do not suggest -fsanitize=all (PR driver/78863).
PR driver/78863
* gcc.c (driver::build_option_suggestions): Do not add
-fsanitize=all as a suggestion candidate.
PR driver/78863
* gcc.dg/spellcheck-options-13.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/spellcheck-options-13.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gcc.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548585-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:06:51 2016
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Subject: [Bug driver/78863] [6 Regression] error on -fsanitize suggests invalid -fsanitize=all
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7 Regression] error on |[6 Regression] error on
|-fsanitize suggests invalid |-fsanitize suggests invalid
|-fsanitize=all |-fsanitize=all
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-548586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:11:40 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78884] [5/6/7 Regression] ICE when gimplifying VLA in OpenMP SIMD region
Date: Wed, 21 Dec 2016 15:11:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-21
CC| |marxin at gcc dot gnu.org
Known to work| |4.8.5
Summary|ICE when gimplifying VLA in |[5/6/7 Regression] ICE when
|OpenMP SIMD region |gimplifying VLA in OpenMP
| |SIMD region
Ever confirmed|0 |1
Known to fail| |4.9.4, 5.4.0, 6.3.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-548587-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:13:44 2016
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Subject: [Bug tree-optimization/78886] [5/6/7 Regression] Segmentation fault malloc and volatile
Date: Wed, 21 Dec 2016 15:13:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with GCC 5.
>From gcc-bugs-return-548588-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:19:28 2016
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78884] [5/6/7 Regression] ICE when gimplifying VLA in OpenMP SIMD region
Date: Wed, 21 Dec 2016 15:19:00 -0000
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--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Not sure how well this qualifies as a regression: prior to 4.9, there was no
OpenMP SIMD support, so 4.8 just diagnoses a warning for an unrecognized
omp-simd pragma.
>From gcc-bugs-return-548589-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:21:42 2016
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Subject: [Bug tree-optimization/78886] [5/6/7 Regression] Segmentation fault malloc and volatile
Date: Wed, 21 Dec 2016 15:21:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |glisse at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Following patch fixes that:
diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c
index 67075f07e29..4a05725ca7c 100644
--- a/gcc/tree-ssa-strlen.c
+++ b/gcc/tree-ssa-strlen.c
@@ -1869,6 +1869,9 @@ handle_builtin_malloc (enum built_in_function bcode,
gimple_stmt_iterator *gsi)
{
gimple *stmt = gsi_stmt (*gsi);
tree lhs = gimple_call_lhs (stmt);
+ if (lhs == NULL_TREE)
+ return;
+
gcc_assert (get_stridx (lhs) == 0);
int idx = new_stridx (lhs);
tree length = NULL_TREE;
If Mark Glisse, the author of the handle_builtin_malloc function, is fine, I'll
test that.
>From gcc-bugs-return-548591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:23:34 2016
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Subject: [Bug middle-end/78884] ICE when gimplifying VLA in OpenMP SIMD region
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[5/6/7 Regression] ICE when |ICE when gimplifying VLA in
|gimplifying VLA in OpenMP |OpenMP SIMD region
|SIMD region |
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok, dropping regression prefix.
>From gcc-bugs-return-548590-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:23:34 2016
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Subject: [Bug tree-optimization/78887] New: [7 Regression] Failure to build aarch64 allmodconfig Linux kernel 4.9
Date: Wed, 21 Dec 2016 15:23:00 -0000
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Bug ID: 78887
Summary: [7 Regression] Failure to build aarch64 allmodconfig
Linux kernel 4.9
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Reporter: ktkachov at gcc dot gnu.org
Target Milestone: ---
Building an allmodconfig 4.9 kernel for arm64 fails with current trunk (make
ARCH=arm64 allmodconfig)
The error is:
FATAL: arch/arm64/crypto/sha1-ce: sizeof(struct cpu_device_id)=2 is not a
modulo of the size of section __mod_cpu__<identifier>_device_table=1.
Fix definition of struct cpu_device_id in mod_devicetable.h
make[1]: *** [arch/arm64/crypto/sha1-ce.o] Error 1
Some kind of assert is triggering in one of the kernel build scripts.
The build succeeds with GCC 6.
Looks like the compiler renamed some asan-related symbols from:
'_GLOBAL__sub_D_65535_0_sha1_ce_glue.c' to
'_GLOBAL__sub_D_65535_0___odr_asan.__mod_cpu__cpu_feature_match_SHA1_device_table'
Not sure if this is a duplicate of 78513
>From gcc-bugs-return-548592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:24:33 2016
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Subject: [Bug tree-optimization/78887] [7 Regression] Failure to build aarch64 allmodconfig Linux kernel 4.9
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64-linux-gnu
Known to work| |6.2.1
Target Milestone|--- |7.0
Known to fail| |7.0
>From gcc-bugs-return-548593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:42:21 2016
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Subject: [Bug tree-optimization/78886] [5/6/7 Regression] Segmentation fault malloc and volatile
Date: Wed, 21 Dec 2016 15:42:00 -0000
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
The return value of malloc is ignored? Your patch looks ok to me, thanks. If it
is convenient, you might want to remove the statement, otherwise I expect
another pass will handle it later.
>From gcc-bugs-return-548594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 15:59:48 2016
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Subject: [Bug driver/70936] Hard-coded C++ header paths and relocation problem
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|i686-w64-mingw32 |
Last reconfirmed|2016-05-27 00:00:00 |2016-12-21
CC| |dje at gcc dot gnu.org
Summary|Hard-coded C++ header paths |Hard-coded C++ header paths
|and relocation problem on |and relocation problem
|Windows |
Known to fail| |6.3.0
--- Comment #12 from David Edelsohn <dje at gcc dot gnu.org> ---
Dakon: Reconfirmed with 6.3. Not x86 dependent. Not Windows or mingw
dependent.
>From gcc-bugs-return-548595-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 16:01:45 2016
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Subject: [Bug target/78875] -fstack-protector on powerpc64 now always use TLS, won't work for kernel/firmware
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-21
CC| |dje at gcc dot gnu.org,
| |wschmidt at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-548596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 16:04:22 2016
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Subject: [Bug bootstrap/78880] [7 Regression] Revision 243196 breaks bootstrap on x86_64-w64-mingw32
Date: Wed, 21 Dec 2016 16:04:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Posting revision number as r243196 so BZ will linkify it.
>From gcc-bugs-return-548597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 16:14:21 2016
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/78870] Support std::filesystem on Windows
Date: Wed, 21 Dec 2016 16:14:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jan Niklas Hasse from comment #4)
> Do you mean the part about legal paperwork in
> https://gcc.gnu.org/contribute.html ?
Yes.
> And can I look at how boost::filesystem does this?
You can't copy any code, that would be a copyright violation. It's OK to see
which Windows API functions Boost uses for a particular filesystem operation,
but if you're not sure what is covered by copyright law then it's safer not to
use another project at all.
I was hoping that somebody who actually knows the Windows API would contribute
the code, so they already know what the appropriate functions are.
>From gcc-bugs-return-548598-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 16:15:29 2016
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Subject: [Bug target/76731] [AVX512] _mm512_i32gather_epi32 and other scatter/gather routines have incorrect signature
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Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:
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| |m
--- Comment #8 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
(In reply to Uroš Bizjak from comment #7)
> (In reply to Jakub Jelinek from comment #5)
> > Kyrill/Uros, is this something we should change?
> > Any comments on the #c1 questions?
>
> Someone from Intel (HJ CC'd) will have to clarify the issue first.
Hi, the issue take place, and it is hard to say about its history.
I think we should follow here declarations from icc headers to be compatible
with it.
We will work on update SDM accordingly.
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Subject: [Bug fortran/78866] ICE in gimplify_adjust_omp_clauses_1, at gimplify.c:8721
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 16:16:20 2016
New Revision: 243860
URL: https://gcc.gnu.org/viewcvs?rev=243860&root=gcc&view=rev
Log:
PR fortran/78866
* openmp.c (resolve_omp_clauses): Diagnose assumed size arrays in
OpenMP map, to and from clauses.
* trans-openmp.c: Include diagnostic-core.h, temporarily redefining
GCC_DIAG_STYLE to __gcc_tdiag__.
(gfc_omp_finish_clause): Diagnose implicitly mapped assumed size
arrays.
* gfortran.dg/gomp/map-1.f90: Add expected error.
* gfortran.dg/gomp/pr78866-1.f90: New test.
* gfortran.dg/gomp/pr78866-2.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/gomp/pr78866-1.f90
trunk/gcc/testsuite/gfortran.dg/gomp/pr78866-2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/fortran/trans-openmp.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/gomp/map-1.f90
>From gcc-bugs-return-548600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 16:22:44 2016
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From: "jhasse at bixense dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/78870] Support std::filesystem on Windows
Date: Wed, 21 Dec 2016 16:22:00 -0000
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--- Comment #6 from Jan Niklas Hasse <jhasse at bixense dot com> ---
> Yes.
Okay thanks, I'll look into it.
> You can't copy any code, that would be a copyright violation. It's OK to see
> which Windows API functions Boost uses for a particular filesystem
> operation, but if you're not sure what is covered by copyright law then it's
> safer not to use another project at all.
According to https://www.gnu.org/licenses/license-list.html the Boost License
is GPL compatible. So when I mark the code I copied with the source, it should
work, shouldn't it?
> I was hoping that somebody who actually knows the Windows API would
> contribute the code, so they already know what the appropriate functions are.
I know the Windows API, but the details are hard to get right. Especially
getting everything to be bug-free. Many man hours have already been spend on
boost::filesystem and the API is similar to std::filesystem. Why should I
re-invent the wheel?
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Subject: [Bug target/71321] [6/7 Regression] x86: worse code for uint8_t % 10 and / 10
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--- Comment #6 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Wed Dec 21 16:45:33 2016
New Revision: 243861
URL: https://gcc.gnu.org/viewcvs?rev=243861&root=gcc&view=rev
Log:
PR target/71321
* config/i386/i386.md (lea<mode>_general_2b, lea<mode>_general_3b): New
patterns.
* config/i386/predicates.md (const123_operand): New.
PR target/71321
* gcc.target/i386/pr71321.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr71321.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/config/i386/predicates.md
trunk/gcc/testsuite/ChangeLog
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/78870] Support std::filesystem on Windows
Date: Wed, 21 Dec 2016 16:52:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jan Niklas Hasse from comment #6)
> According to https://www.gnu.org/licenses/license-list.html the Boost
> License is GPL compatible. So when I mark the code I copied with the source,
> it should work, shouldn't it?
See the legal prerequisites. As it says, the FSF prefers to hold the copyright
on all code contributed to GCC. If you copy somebody else's code you can't
assign copyright to the FSF because you don't own the copyright. We could
request all the authors of Boost.Filesystem to assign copyright, but I don't
want to do that, I want an independent implementation (the Boost implementation
doesn't follow exactly the same specification anyway).
I'm not interested in simply copying the Boost.Filesystem code into GCC.
If you want to use the Boost implementation then just use that, with
appropriate preprocessor hackery and namespace aliases.
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Subject: [Bug tree-optimization/78886] [5/6/7 Regression] Segmentation fault malloc and volatile
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'd say tree-ssa-strlen.c is not the pass that should remove the malloc.
The patch is preapproved with suitable testcase and ChangeLog.
>From gcc-bugs-return-548604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 17:08:59 2016
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Subject: [Bug fortran/78866] ICE in gimplify_adjust_omp_clauses_1, at gimplify.c:8721
Date: Wed, 21 Dec 2016 17:08:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-548605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 17:11:23 2016
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78888] New: toupper(x) can be assumed not to be in the range 'a' - 'z'
Date: Wed, 21 Dec 2016 17:11:00 -0000
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Summary: toupper(x) can be assumed not to be in the range 'a' -
'z'
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The return value of the toupper function is guaranteed not to be in the range
'a' - 'z'. Similarly, the tolower return value is guaranteed not to be in the
range 'A' - 'Z'. For non-EBCDIC character sets, it would be useful to set the
range on the return value reflecting this constrained range. (The range is
actually the intersection of the range [0, UCHAR_MAX] and the anti-range ~['a',
'z'], plus the value EOF).
In addition, it would be useful to issue a warning if the return value is
compared against a constant from its anti-range since such a comparison in
always false (this might naturally fall out of the optimization).
The following test case shows that GCC does not take advantage of this
optimization (it doesn't remove the call to f()) or issue the warning.
$ cat d.c && gcc -O2 -S -Wall -Wextra -Wpedantic
-fdump-tree-optimized=/dev/stdout d.c
void f (void);
void g (int x)
{
if (__builtin_toupper ((unsigned char)x) == 'a')
f ();
}
;; Function g (g, funcdef_no=0, decl_uid=1797, cgraph_uid=0, symbol_order=0)
Removing basic block 5
g (int x)
{
int _1;
int _6;
<bb 2> [100.00%]:
_6 = x_3(D) & 255;
_1 = __builtin_toupper (_6);
if (_1 == 97)
goto <bb 3>; [22.95%]
else
goto <bb 4>; [77.05%]
<bb 3> [22.95%]:
f (); [tail call]
<bb 4> [100.00%]:
return;
}
>From gcc-bugs-return-548606-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 17:39:58 2016
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Subject: [Bug tree-optimization/71518] [6 Regression] wrong code at -O3 on x86_64-linux-gnu in 64-bit mode (not in 32-bit mode)
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Mikael Pettersson <mikpelinux at gmail dot com> changed:
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--- Comment #10 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Shouldn't this be closed as fixed? The fix was backported to gcc-6-branch long
ago.
>From gcc-bugs-return-548607-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 17:47:28 2016
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Subject: [Bug tree-optimization/78887] [7 Regression] Failure to build aarch64 allmodconfig Linux kernel 4.9
Date: Wed, 21 Dec 2016 17:47:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you attach the preprocessed sources associated with sha1-ce.o ? It should
be only one or two files.
>From gcc-bugs-return-548608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 18:14:21 2016
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Subject: [Bug target/77345] [7 Regression] Segmentation fault w/ -misel -O1 (and above)
Date: Wed, 21 Dec 2016 18:14:00 -0000
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Bernd Schmidt <bernds at gcc dot gnu.org> changed:
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--- Comment #4 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Seems very likely.
>From gcc-bugs-return-548609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 18:25:49 2016
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From: "eggert at gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/78685] -Og generates too many "<optimized out>"s
Date: Wed, 21 Dec 2016 18:25:00 -0000
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--- Comment #5 from Paul Eggert <eggert at gnu dot org> ---
Just to clarify: 'main' (in the sample program) is just an example. The
problems developers are seeing when debugging Emacs almost all involve
functions other than 'main'.
It should be OK for -Og to optimize significantly less than it does now, so
long as -Og remains better than -O0. As things stand, -Og is pretty much
useless for its stated purpose because GDB so often cannot display values of
locals, and I expect this partly explains why -Og is so rarely used in
practice.
In Emacs, developers use -O0 for debugging, but this can be reeeaally slow
because -O0 does not inline and Emacs relies heavily on small inlined
functions. Although Emacs works around this problem by using macros instead of
functions, such workarounds have obvious drawbacks. For Emacs, it would be nice
if -Og did not discard locals, but continued to inline.
>From gcc-bugs-return-548610-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 18:26:54 2016
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Subject: [Bug c++/78890] New: [5/6/7 Regression] ICE on invalid reference type in union
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Reddit user sjd96 reported the following issue:
% cat union.ii
int main() {
union {
int a;
int &b = a;
};
a = 1;
auto c = b + 1;
}
% g++ -c union.ii
union.ii: In function ‘int main()’:
union.ii:1:5: error: invalid first operand of MEM_REF
int main() {
^~~~
_2
union.ii:7:12: note: in statement
auto c = b + 1;
^
_3 = MEM[(int &)_2];
union.ii:1:5: internal compiler error: verify_gimple failed
int main() {
^~~~
0xda2bd5 verify_gimple_in_cfg(function*, bool)
/home/markus/gcc/gcc/tree-cfg.c:5266
0xc85c06 execute_function_todo
/home/markus/gcc/gcc/passes.c:1965
0xc86cab execute_todo
/home/markus/gcc/gcc/passes.c:2015
% g++ -std=c++98 -c union.ii
union.ii: In function ‘int main()’:
union.ii:4:14: warning: non-static data member initializers only available with
-std=c++11 or -std=gnu++11
int &b = a;
^
union.ii:4:14: error: in C++98 ‘main()::<unnamed union>::b’ may not have
reference type ‘int&’ because it is a member of a union
union.ii:7:8: error: ‘c’ does not name a type
auto c = b + 1;
^
>From gcc-bugs-return-548611-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 18:29:37 2016
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Subject: [Bug c++/78749] [7 Regression] bogus warning for friend member function in anonymous namespace
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Dec 21 18:28:54 2016
New Revision: 243862
URL: https://gcc.gnu.org/viewcvs?rev=243862&root=gcc&view=rev
Log:
PR c++/78749 - friend in anonymous namespace
* decl.c (wrapup_globals_for_namespace): Don't complain about friend
pseudo-template instantiations.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wunused-function3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
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Subject: [Bug c++/78890] [5/6/7 Regression] ICE on invalid reference type in union
Date: Wed, 21 Dec 2016 18:42:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-21
Known to work| |4.9.4
Ever confirmed|0 |1
Known to fail| |5.4.0, 6.3.0, 7.0
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From: "gcc at fischerpaulsen dot dk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/78891] New: Array out of bound access generates wrong code in O2 or higher optimizations
Date: Wed, 21 Dec 2016 18:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78891
Bug ID: 78891
Summary: Array out of bound access generates wrong code in O2
or higher optimizations
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at fischerpaulsen dot dk
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Created attachment 40391
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40391&action=edit
Faulty code
The included isSet function will return 1 without checking the contents of
array if compiled with optimization -O2 -O3 or -Os. Especially it will return 1
if array contains 16 0's - which is wrong.
It will work correctly if compiled with lower optimization.
It will also work correctly if
- the array is defined as unsigned char array[17];
or
- the expression array[index] == 0x0 is changed to *(array+index) == 0x0
Note that the code might access the element array[16] - which is outside the
array - but the contents of this is irrelvant for the result.
The command line used for compilation is
gcc -O2 -save-temps -Wall -Wextra -c prog.c
It was run on a standard ubuntu PC
uname -a
Linux cpa-ThinkPad-T530 4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
The problem has been observed on a number of gcc versions (e.g. cygwin on
windows 7 using gcc version 4.9.2)
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Subject: [Bug target/77345] [7 Regression] Segmentation fault w/ -misel -O1 (and above)
Date: Wed, 21 Dec 2016 19:01:00 -0000
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
It looks very much like PR71724 indeed, but I cannot get this one to fail.
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Subject: [Bug c/78891] Array out of bound access generates wrong code in O2 or higher optimizations
Date: Wed, 21 Dec 2016 19:02:00 -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> ---
((*(array+index) == 0x0) && (index < 16))
This is undefined code. You should swap around the two operands to the short
cutting boolean and to have defined code.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78891] Array out of bound access generates wrong code in O2 or higher optimizations
Date: Wed, 21 Dec 2016 19:07:00 -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 #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Let's consider following runnable test-case:
$ cat pr78891.c
void readArray(unsigned char *p);
int main(void)
{
unsigned char array[16];
unsigned short index;
readArray(array);
for(index = 0;((*(array+index) == 0x0) && (index < 16)); ++index);
return (index < 16) ? 1 : 0;
}
$ cat pr78891-2.c
void readArray(unsigned char *ptr)
{
__builtin_bzero (ptr, 16);
}
$ gcc pr78891.c pr78891-2.c -O2 && valgrind ./a.out
==28173== Memcheck, a memory error detector
==28173== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==28173== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==28173== Command: ./a.out
==28173==
==28173== Conditional jump or move depends on uninitialised value(s)
==28173== at 0x4003E7: main (in /home/marxin/Programming/testcases/a.out)
$ gcc pr78891.c pr78891-2.c -O2 -fsanitize=undefined && ./a.out
pr78891.c:10:19: runtime error: load of address 0x7fff856791b0 with
insufficient space for an object of type 'unsigned char'
0x7fff856791b0: note: pointer points here
00 00 00 00 00 00 00 00 00 00 00 00 b0 06 40 00 00 00 00 00 a0 05 40 00 00
00 00 00 91 c2 ea 1a
^
Both undefined behavior sanitizer and valgrind can detect the undefined
behavior. Thus I'm closing as invalid.
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/65479] sanitizer stack trace missing frames past #0 on powerpc64
Date: Wed, 21 Dec 2016 19:09:00 -0000
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--- Comment #19 from seurer at gcc dot gnu.org ---
Author: seurer
Date: Wed Dec 21 19:09:10 2016
New Revision: 243863
URL: https://gcc.gnu.org/viewcvs?rev=243863&root=gcc&view=rev
Log:
[PATCH, v2, rs6000] pr65479 Add -fasynchronous-unwind-tables when the
-fsanitize=address option is seen.
All feedback from the earlier version has been taken into account now.
This patch adds the -fasynchronous-unwind-tables option to compilations when
the -fsanitize=address option is seen but not if any
-fasynchronous-unwind-tables options were already specified.
-fasynchronous-unwind-tables causes a full strack trace to be produced when
the sanitizer detects an error. Without the full trace several of the asan
test cases fail on powerpc.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65479 for more information.
Bootstrapped and tested on powerpc64le-unknown-linux-gnu,
powerpc64be-unknown-linux-gnu, and x86_64-pc-linux-gnu with no regressions.
Is this ok for trunk?
[gcc]
2016-12-21 Bill Seurer <seurer@linux.vnet.ibm.com>
PR sanitizer/65479
* config/rs6000/rs6000.c (rs6000_option_override_internal): Add
-fasynchronous-unwind-tables option when -fsanitize=address is
specified.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
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Subject: [Bug c++/78767] [7 Regression] ICE when inheriting constructor of base class
Date: Wed, 21 Dec 2016 19:11:00 -0000
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Dec 21 19:10:23 2016
New Revision: 243864
URL: https://gcc.gnu.org/viewcvs?rev=243864&root=gcc&view=rev
Log:
PR c++/78767 - ICE with inherited constructor default argument
* method.c (strip_inheriting_ctors): Strip template as appropriate.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/inh-ctor24.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/method.c
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Subject: [Bug rtl-optimization/11488] Pre-regalloc scheduling severely worsens performance
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--- Comment #12 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Author: pthaugen
Date: Wed Dec 21 19:15:32 2016
New Revision: 243866
URL: https://gcc.gnu.org/viewcvs?rev=243866&root=gcc&view=rev
Log:
PR rtl-optimization/11488
* common/config/rs6000/rs6000-common.c
(rs6000_option_optimization_table): Enable -fsched-pressure.
* config/rs6000/rs6000.c (TARGET_COMPUTE_PRESSURE_CLASSES): Define
target hook.
(rs6000_option_override_internal): Set default -fsched-pressure
algorithm.
(rs6000_compute_pressure_classes): Implement target hook.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/common/config/rs6000/rs6000-common.c
trunk/gcc/config/rs6000/rs6000.c
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Subject: [Bug c++/42329] Deduction of template template argument via base class fails
Date: Wed, 21 Dec 2016 19:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42329
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Dec 21 19:38:50 2016
New Revision: 243870
URL: https://gcc.gnu.org/viewcvs?rev=243870&root=gcc&view=rev
Log:
PR c++/42329 - deducing base template for template template arg
* pt.c (unify_bound_ttp_args): Split out from unify.
(try_class_unification): Handle BOUND_TEMPLATE_TEMPLATE_PARM.
(unify): Check for type/non-type mismatch early.
[BOUND_TEMPLATE_TEMPLATE_PARM]: Try get_template_base.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/variadic-ttp6.C
trunk/gcc/testsuite/g++.dg/template/ttp-derived1.C
trunk/gcc/testsuite/g++.dg/template/ttp-derived2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/g++.dg/cpp0x/alias-decl-2.C
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From: "pthaugen at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/11488] Pre-regalloc scheduling severely worsens performance
Date: Wed, 21 Dec 2016 20:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11488
--- Comment #13 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Fixed on powerpc. Testcase times (at 8X original loop count to get measurable
times).
base: 4.436 sec
base + -fno-schedule-insns: 2.052 sec
base + patch: 1.815 sec
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From: "bernds at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/71724] [5/6/7 Regression] ICE: Segmentation fault, deep recursion between combine_simplify_rtx and subst
Date: Wed, 21 Dec 2016 21:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71724
--- Comment #4 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Maybe we just need to test for that condition, even though it's ugly. However,
I think there are some other improvements we could make here.
Part of the problem seems to be what if_then_else_cond does on this rtx:
(plus:SI (if_then_else:SI (eq (reg:CC 185)
(const_int 0 [0]))
(reg:SI 165)
(reg:SI 174 [ t9.0_1+4 ]))
(reg:SI 165))
Reg 165 is known to be zero or one, so it gets turned into a condition, and we
have two different conditions on the operands. That causes us to fail to make
the fairly obvious transformation to
cond = reg:CC 185
true_rtx = (plus r165 r165)
false_rtx = (plus r174 r165)
I'm testing the following, which tries to undo such transformation of plain REG
if that seems it'll enable other transformations which are more likely to be
beneficial. It makes the crash go away.
Index: combine.c
===================================================================
--- combine.c (revision 242958)
+++ combine.c (working copy)
@@ -9031,11 +9031,31 @@ if_then_else_cond (rtx x, rtx *ptrue, rt
the same value, compute the new true and false values. */
else if (BINARY_P (x))
{
- cond0 = if_then_else_cond (XEXP (x, 0), &true0, &false0);
- cond1 = if_then_else_cond (XEXP (x, 1), &true1, &false1);
+ rtx op0 = XEXP (x, 0);
+ rtx op1 = XEXP (x, 1);
+ cond0 = if_then_else_cond (op0, &true0, &false0);
+ cond1 = if_then_else_cond (op1, &true1, &false1);
+
+ if ((cond0 != 0 && cond1 != 0 && !rtx_equal_p (cond0, cond1))
+ && (REG_P (op0) || REG_P (op1)))
+ {
+ /* Try to enable a simplification by undoing work done by
+ if_then_else_cond if it converted a REG into something more
+ complex. */
+ if (REG_P (op0))
+ {
+ cond0 = 0;
+ true0 = false0 = op0;
+ }
+ else
+ {
+ cond1 = 0;
+ true1 = false1 = op1;
+ }
+ }
if ((cond0 != 0 || cond1 != 0)
- && ! (cond0 != 0 && cond1 != 0 && ! rtx_equal_p (cond0, cond1)))
+ && ! (cond0 != 0 && cond1 != 0 && !rtx_equal_p (cond0, cond1)))
{
/* If if_then_else_cond returned zero, then true/false are the
same rtl. We must copy one of them to prevent invalid rtl
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78891] Array out of bound access generates wrong code in O2 or higher optimizations
Date: Wed, 21 Dec 2016 21:42:00 -0000
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Christian Paulsen <gcc at fischerpaulsen dot dk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #3 from Christian Paulsen <gcc at fischerpaulsen dot dk> ---
valgrind does NOT catch the the problem in the original code using array
indexing and not pointer calculation.
As the generated code does not access the array at all
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Subject: [Bug c++/77830] internal compiler error: in output_constructor_regular_field, at varasm.c:4968, when using constexpr (with testcase)
Date: Wed, 21 Dec 2016 21:59:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 21:58:23 2016
New Revision: 243873
URL: https://gcc.gnu.org/viewcvs?rev=243873&root=gcc&view=rev
Log:
PR c++/77830
* constexpr.c (cxx_eval_array_reference): Perform out of bounds
verification even if lval is true, just allow one past the last
element in that case.
(cxx_eval_store_expression): Detect stores to out of bound
ARRAY_REF.
* g++.dg/cpp1y/pr77830.C: New test.
* g++.dg/cpp0x/pr65398.C: Adjust expected diagnostics.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/pr77830.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp0x/pr65398.C
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Subject: [Bug c/78891] Array out of bound access generates wrong code in O2 or higher optimizations
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Because it's undefined there are no constraints.
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Subject: [Bug c++/78656] Fix-it suggestion for std::alocator doesn't include std::allocator
Date: Wed, 21 Dec 2016 22:06:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
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Subject: [Bug c++/77829] Bad fix-it for nested-name-specifier
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/78817] stage2 bootstrap failure in vec.h:1613:5: error: argument 1 null where non-null expected after r243661
Date: Wed, 21 Dec 2016 22:16:00 -0000
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 22:15:59 2016
New Revision: 243874
URL: https://gcc.gnu.org/viewcvs?rev=243874&root=gcc&view=rev
Log:
PR bootstrap/78817
* tree-pass.h (make_pass_post_ipa_warn): Declare.
* builtins.c (validate_arglist): Adjust get_nonnull_args call.
Check for NULL pointer argument to nonnull arg here.
(validate_arg): Revert 2016-12-14 changes.
* calls.h (get_nonnull_args): Remove declaration.
* tree-ssa-ccp.c: Include diagnostic-core.h.
(pass_data_post_ipa_warn): New variable.
(pass_post_ipa_warn): New class.
(pass_post_ipa_warn::execute): New method.
(make_pass_post_ipa_warn): New function.
* tree.h (get_nonnull_args): Declare.
* tree.c (get_nonnull_args): New function.
* calls.c (maybe_warn_null_arg): Removed.
(maybe_warn_null_arg): Removed.
(initialize_argument_information): Revert 2016-12-14 changes.
* passes.def: Add pass_post_ipa_warn after first ccp after IPA.
c-family/
* c-common.c (struct nonnull_arg_ctx): New type.
(check_function_nonnull): Return bool instead of void. Use
nonnull_arg_ctx as context rather than just location_t.
(check_nonnull_arg): Adjust for the new context type, set
warned_p to true if a warning has been diagnosed.
(check_function_arguments): Return bool instead of void.
* c-common.h (check_function_arguments): Adjust prototype.
c/
* c-typeck.c (build_function_call_vec): If check_function_arguments
returns true, set TREE_NO_WARNING on CALL_EXPR.
cp/
* typeck.c (cp_build_function_call_vec): If check_function_arguments
returns true, set TREE_NO_WARNING on CALL_EXPR.
* call.c (build_over_call): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-common.h
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/calls.c
trunk/gcc/calls.h
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/typeck.c
trunk/gcc/passes.def
trunk/gcc/tree-pass.h
trunk/gcc/tree-ssa-ccp.c
trunk/gcc/tree.c
trunk/gcc/tree.h
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/78580] [6/7 Regression] Segfault in gcc with multilib (-m32) and -ffixed-*
Date: Wed, 21 Dec 2016 22:20:00 -0000
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--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Wed Dec 21 22:20:11 2016
New Revision: 243875
URL: https://gcc.gnu.org/viewcvs?rev=243875&root=gcc&view=rev
Log:
2016-12-21 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/78580
* ira-costs.c (find_costs_and_classes): Make regno_aclass
translated into an allocno class.
2016-12-21 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/78580
* gcc.target/i386/pr78580.c: New.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr78580.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ira-costs.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548630-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 22:21:49 2016
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/78812] [5/6/7 Regression] Wrong code generation due to hoisting memory load across function call
Date: Wed, 21 Dec 2016 22:21:00 -0000
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--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
So it's been a long time... And IIRC, rth was the one that fixed this wart in
gcse.
A BB that ends with a call that can throw or any other abnormal edge is
supposed to suppress hoisting for precisely the reasons outlined in this BZ.
Essentially we need to insert on the edge, but we can't (easily) do that for
the EH/abnormal edge and we can't safely insert before the call.
Theother possibility was that we kill the expressions in the EH landing pads.
I thought we looked at that as well.
>From gcc-bugs-return-548631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 22:25:38 2016
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Subject: [Bug rtl-optimization/71724] [5/6/7 Regression] ICE: Segmentation fault, deep recursion between combine_simplify_rtx and subst
Date: Wed, 21 Dec 2016 22:25:00 -0000
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I am using the following, which also fixes the infinite loop, and seems to
not regress code quality much at all (I found *one* pattern where it made
things one machine insn worse, involving a define_insn_and_split (with
cost 0, so any finite cost is better -- combine did manage to do something
that is better according to its costs!)
But I am worried something similar then needs to be done to true_rtx, and
I don't see what.
===
diff --git a/gcc/combine.c b/gcc/combine.c
index c7255f0..ecdd3fd 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -5658,7 +5658,7 @@ combine_simplify_rtx (rtx x, machine_mode op0_mode, int
in
here since true_rtx or false_rtx might share RTL with x as a
result of the if_then_else_cond call above. */
true_rtx = subst (copy_rtx (true_rtx), pc_rtx, pc_rtx, 0, 0, 0);
- false_rtx = subst (copy_rtx (false_rtx), pc_rtx, pc_rtx, 0, 0, 0);
+ false_rtx = subst (copy_rtx (false_rtx), cond, const0_rtx, 0, 0, 0);
/* If true_rtx and false_rtx are not general_operands, an
if_then_else
is unlikely to be simpler. */
===
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Subject: [Bug c++/42329] Deduction of template template argument via base class fails
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
Target Milestone|--- |7.0
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for GCC 7.
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Subject: [Bug c++/78767] [7 Regression] ICE when inheriting constructor of base class
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/78749] [7 Regression] bogus warning for friend member function in anonymous namespace
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-548635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 22:30:42 2016
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Subject: [Bug c++/78826] jump bypasses non-POD
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78826
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #4)
> Jason, do you see any advantage to making this a pedwarn for -std=c++98
That seems to make sense, given that other compilers diagnose it.
>From gcc-bugs-return-548636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 22:40:28 2016
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/78892] New: [7.0 Regression] no type conversion before coarray put
Date: Wed, 21 Dec 2016 22:40:00 -0000
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Bug ID: 78892
Summary: [7.0 Regression] no type conversion before coarray put
Product: gcc
Version: 7.0
Status: UNCONFIRMED
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The code below demonstrates a regression in which gfortran 7.0.0 20161215 is
not performing a necessary implicit type conversion before putting data on a
remote image. By contrast, the code below works as expected with gfortran
5.4.0 and 6.2.0.
$ cat convert-before-put.f90
real :: a[*]
integer :: receiver
associate(me=>this_image())
if (me == 1) then
do receiver = 2, num_images()
a[receiver] = receiver ! implicit real(receiver) needed here
sync images (receiver) ! notify remote image that data has been put
end do
else
sync images (1) ! await notification of data put by image 1
if (a/=real(me)) print *, "Image ",me,": received ",a,", but expected
",real(me)
end if
end associate
end
$ caf convert-before-put.f90
$ cafrun -np 2 ./a.out
Image 2 : received 0.00000000 , but expected 2.00000000
>From gcc-bugs-return-548637-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 22:50:45 2016
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Subject: [Bug c++/72707] [5/6/7 regression] local anonymous union member hides names in the same scope
Date: Wed, 21 Dec 2016 22:50:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 21 22:49:59 2016
New Revision: 243877
URL: https://gcc.gnu.org/viewcvs?rev=243877&root=gcc&view=rev
Log:
PR c++/72707
* name-lookup.c (pushdecl_maybe_friend_1): Do check shadowing of
artificial x if it is an anonymous union variable.
* g++.dg/warn/Wshadow-12.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wshadow-12.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/name-lookup.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 23:27:10 2016
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From: "williambader at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/78893] New: gcc-6.3.0 build fails on genattrtab on CentOS 7
Date: Wed, 21 Dec 2016 23:27:00 -0000
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Bug ID: 78893
Summary: gcc-6.3.0 build fails on genattrtab on CentOS 7
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
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Created attachment 40392
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40392&action=edit
build log
I built gcc-6.3.0 on CentOS 4, 5, and 6 using the same procedures that had
worked for previous gcc-6 releases, but on CentOS 7, the build fails in
genattrtab. genattrtab crashes pretty hard -- running it under valgrind ends
with 'Killed', and valgrind exists without giving a traceback or diagnostics.
gdb couldn't get a stack trace either. I also tried running the build with -O0.
Is there anything else that I can try? I attached a log of the configure and
make.
The system is CentOS 7.3.1611 with kernel 3.10.0-327.36.2.el7.x86_64 and gcc
4.8.5 20150623 (Red Hat 4.8.5-11).
Regards,
William
>From gcc-bugs-return-548639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 23:38:19 2016
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From: "tom.m935 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78894] New: [c++17] ICE for std::list template deduction from std:: initializer_list
Date: Wed, 21 Dec 2016 23:38:00 -0000
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Bug ID: 78894
Summary: [c++17] ICE for std::list template deduction from
std:: initializer_list
Product: gcc
Version: 7.0
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Created attachment 40393
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Preprocessed source
The code (preprocessed attached)
#include <list>
int main() {
// Should construct std::list<int>
std::list list = { 0, 0 };
// ^
// internal compiler error: in tsubst_copy, at cp/pt.c:14727, Abort trap: 6
}
crashes on gcc 7.0.0 20161204. Expected behaviour is to construct a
std::list<int> with two 0 elements.
Command: g++ bug.ii -std=c++17 -Wall -Wextra
Error:
bug.cpp: In function 'std::__cxx11::list(std::__cxx11::list<_Tp,
_Alloc>::size_type, const value_type&, const allocator_type&)->
std::__cxx11::list<_Tp, _Alloc> [with _Tp = int; _Alloc = std::allocator<int>;
std::__cxx11::list<_Tp, _Alloc>::size_type = long unsigned int;
std::__cxx11::list<_Tp, _Alloc>::value_type = int; std::__cxx11::list<_Tp,
_Alloc>::allocator_type = std::allocator<int>]':
bug.cpp:5:29: internal compiler error: in tsubst_copy, at cp/pt.c:14727
std::list list = { 0, 0 };
^
bug.cpp:5:29: internal compiler error: Abort trap: 6
g++: internal compiler error: Abort trap: 6 (program cc1plus)
>From gcc-bugs-return-548640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 21 23:44:03 2016
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From: "james410 at cowgill dot org.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78895] New: [6 regression] wrong code with -O1 when setting union twice since 6.3
Date: Wed, 21 Dec 2016 23:44:00 -0000
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Bug ID: 78895
Summary: [6 regression] wrong code with -O1 when setting union
twice since 6.3
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
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Created attachment 40394
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40394&action=edit
union-twice.c
The attached testcase correctly prints nothing and exits with status 0 when
using GCC 6.2, but with 6.3 it prints "FAIL" and exits with status 10.
Originally reduced from strange behavior in jackd2
(https://bugs.debian.org/848285). The noinline bit is not required in the
original code in jackd2, but is in my testcase.
Compiled with:
gcc -O1 union-twice.c -o union-twice
I bisected it to revision 241788 (the first bad revision):
2016-11-02 Richard Biener <rguenther@suse.de>
Backport from mainline
2016-11-02 Richard Biener <rguenther@suse.de>
PR tree-optimization/78047
* tree-ssa-structalias.c (push_fields_onto_fieldstack): Initialize
fake field at offset zero conservatively regarding to
may_have_pointers.
2016-10-31 Richard Biener <rguenther@suse.de>
PR lto/78129
* lto.c (do_whole_program_analysis): Bail out after errors
from WPA analysis.
2016-10-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/77879
* tree-ssa-structalias.c (handle_const_call): Properly handle
NRV return slots.
(handle_pure_call): Likewise.
2016-10-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/77839
* tree-ssa-sccvn.c (set_ssa_val_to): Forbid value -> constant value
lattice transition.
* gcc.dg/torture/pr77839.c: New testcase.
2016-09-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/77745
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
When removing redundant stores make sure to check compatibility
of the TBAA state for downstream accesses.
* tree-ssa-sccvn.c (visit_reference_op_store): Likewise for when
value-numbering virtual operands for store matches.
* g++.dg/torture/pr77745.C: New testcase.
2016-09-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/77648
* tree-ssa-structalias.c (process_constraint): Handle all DEREF
with complex RHS.
(make_transitive_closure_constraints): Adjust comment.
(make_any_offset_constraints): New function.
(handle_rhs_call): Make sure to first expand a pointer to all
subfields before transitively closing it.
(handle_const_call): Likewise. Properly expand returned
pointers as well.
(handle_pure_call): Likewise.
* gcc.dg/torture/pr77648-1.c: New testcase.
* gcc.dg/torture/pr77648-2.c: Likewise.
>From gcc-bugs-return-548641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 00:02:50 2016
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/78893] gcc-6.3.0 build fails on genattrtab on CentOS 7
Date: Thu, 22 Dec 2016 00:02:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>make[3]: *** [s-attrtab] Killed
How much memory do you have on your system? Do you have a swap space?
Provide the output of the command "free".
>From gcc-bugs-return-548642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 00:31:09 2016
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From: "williambader at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/78893] gcc-6.3.0 build fails on genattrtab on CentOS 7
Date: Thu, 22 Dec 2016 00:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78893
--- Comment #2 from William Bader <williambader at hotmail dot com> ---
Thanks for the quick reply. The system is a VM. I have the results of 'free'
below. The VMs where the build worked all have slightly more memory and swap.
What is the recommended minimum to build gcc-6?
$ free -h
total used free shared buff/cache available
Mem: 993M 239M 382M 10M 371M 564M
Swap: 1.0G 977M 47M
Regards, William
>From gcc-bugs-return-548643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 00:34:41 2016
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From: "duongdominhchau at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78896] New: Segmentation fault occurs when use variable initialized using structured binding with capture-by-ref lambda
Date: Thu, 22 Dec 2016 00:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78896
Bug ID: 78896
Summary: Segmentation fault occurs when use variable
initialized using structured binding with
capture-by-ref lambda
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: duongdominhchau at hotmail dot com
Target Milestone: ---
I found a segmentation fault while trying structured binding using GCC 7:
This is the source code which caused the segmentation fault:
int main() {
int a {10};
auto [b]{ [&a](){} };
return b - a;
}
The same code under Clang 4 would raise an error instead of a segmentation
fault.
GCC 7: http://melpon.org/wandbox/permlink/WDd8mSy4dCXj8CSa
Clang 4: http://melpon.org/wandbox/permlink/EQfQxrdTrbNbTw2b
If I change the lambda to capture by value, or never use the variable
initialized using structured binding (the variable `b` in my code), no
segmentation fault occurs.
This is the output of the compiler:
prog.cc: In function 'int main()':
prog.cc:4:10: internal compiler error: Segmentation fault
return b - a;
^
0xb04b0f crash_signal
/home/heads/gcc/gcc-source/gcc/toplev.c:333
0x88b893 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/heads/gcc/gcc-source/gcc/expr.c:10107
0x895c1a store_expr_with_bounds(tree_node*, rtx_def*, int, bool, bool,
tree_node*)
/home/heads/gcc/gcc-source/gcc/expr.c:5552
0x89684e expand_assignment(tree_node*, tree_node*, bool)
/home/heads/gcc/gcc-source/gcc/expr.c:5321
0x7ab45d expand_gimple_stmt_1
/home/heads/gcc/gcc-source/gcc/cfgexpand.c:3641
0x7ab45d expand_gimple_stmt
/home/heads/gcc/gcc-source/gcc/cfgexpand.c:3737
0x7aca1f expand_gimple_basic_block
/home/heads/gcc/gcc-source/gcc/cfgexpand.c:5744
0x7b1be6 execute
/home/heads/gcc/gcc-source/gcc/cfgexpand.c:6355
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-548644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 05:58:20 2016
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Subject: [Bug c++/78897] New: ICE: in output_constructor_regular_field, at varasm.c:5019
Date: Thu, 22 Dec 2016 05:58:00 -0000
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Bug ID: 78897
Summary: ICE: in output_constructor_regular_field, at
varasm.c:5019
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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markus@x4 /tmp % cat const.ii
struct Optional {
constexpr Optional() : _dummy{} { _value = 1; }
union {
int _dummy;
int _value;
};
};
Optional opt{};
markus@x4 /tmp % clang++ -std=c++14 -c const.ii
markus@x4 /tmp % icpc -std=c++14 -c const.ii
markus@x4 /tmp % g++ -c const.ii
const.ii:8:15: internal compiler error: in output_constructor_regular_field, at
varasm.c:5019
Optional opt{};
^
0x104e345 output_constructor_regular_field
/home/markus/gcc/gcc/varasm.c:5019
0x104e345 output_constructor
/home/markus/gcc/gcc/varasm.c:5327
0x104d2aa output_constant
/home/markus/gcc/gcc/varasm.c:4704
0x104d2aa output_constructor_regular_field
/home/markus/gcc/gcc/varasm.c:5057
0x104d2aa output_constructor
/home/markus/gcc/gcc/varasm.c:5327
0x104f4d1 output_constant
/home/markus/gcc/gcc/varasm.c:4704
0x104f4d1 assemble_variable_contents
/home/markus/gcc/gcc/varasm.c:2083
0x10561ef assemble_variable(tree_node*, int, int, int)
/home/markus/gcc/gcc/varasm.c:2259
0x105ba21 varpool_node::assemble_decl()
/home/markus/gcc/gcc/varpool.c:588
0x96311c output_in_order
/home/markus/gcc/gcc/cgraphunit.c:2248
0x963523 symbol_table::compile()
/home/markus/gcc/gcc/cgraphunit.c:2488
0x965ed6 symbol_table::compile()
/home/markus/gcc/gcc/cgraphunit.c:2587
0x965ed6 symbol_table::finalize_compilation_unit()
/home/markus/gcc/gcc/cgraphunit.c:2584
>From gcc-bugs-return-548645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 06:06:32 2016
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Thu, 22 Dec 2016 06:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78879
Yuan Pengfei <coolypf at qq dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
CC| |law at redhat dot com
Resolution|DUPLICATE |---
--- Comment #7 from Yuan Pengfei <coolypf at qq dot com> ---
After some binary search, I figure out that this bug is a regression since
r226516 .
Here are the related patches:
https://gcc.gnu.org/ml/gcc-patches/2015-05/msg01856.html
https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00096.html
>From gcc-bugs-return-548646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 06:10:44 2016
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
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--- Comment #8 from Yuan Pengfei <coolypf at qq dot com> ---
I have sent a patch that fixes this bug. Please review it. Thanks!
https://gcc.gnu.org/ml/gcc-patches/2016-12/msg01824.html
>From gcc-bugs-return-548647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 06:19:21 2016
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Subject: [Bug c++/78894] [c++17] ICE for std::list template deduction from std:: initializer_list
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
CC| |jason at gcc dot gnu.org,
| |trippels at gcc dot gnu.org
Ever confirmed|0 |1
>From gcc-bugs-return-548648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 06:55:16 2016
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Subject: [Bug c++/78898] New: [7 Regression] ICE: in get_template_base, at cp/pt.c:19665
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78898
Bug ID: 78898
Summary: [7 Regression] ICE: in get_template_base, at
cp/pt.c:19665
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
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A very recent regression:
% cat nsIconChannel.ii
struct A {
template <class T> A(T);
template <template <typename> class SmartPtr> A(SmartPtr<int>) { A(0); }
};
% g++ -c nsIconChannel.ii
nsIconChannel.ii: In substitution of ‘template<template<class> class SmartPtr>
A::A(SmartPtr<int>) [with SmartPtr = <missing>]’:
nsIconChannel.ii:3:68: required from here
nsIconChannel.ii:3:68: internal compiler error: in get_template_base, at
cp/pt.c:19665
template <template <typename> class SmartPtr> A(SmartPtr<int>) { A(0); }
^~~~
0x10166603 get_template_base
../../gcc/gcc/cp/pt.c:19665
0x102a97f7 unify
../../gcc/gcc/cp/pt.c:20305
0x102aed5f unify_one_argument
../../gcc/gcc/cp/pt.c:18901
0x102b180b type_unification_real
../../gcc/gcc/cp/pt.c:19022
0x102b459b fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, bool, bool)
../../gcc/gcc/cp/pt.c:18412
0x101ebc6b add_template_candidate_real
../../gcc/gcc/cp/call.c:3168
0x101ecbaf add_template_candidate
../../gcc/gcc/cp/call.c:3246
0x101ecbaf add_candidates
../../gcc/gcc/cp/call.c:5481
0x101e7a9b build_user_type_conversion_1
../../gcc/gcc/cp/call.c:3795
0x101e82e3 implicit_conversion
../../gcc/gcc/cp/call.c:1898
0x101e9c8f reference_binding
../../gcc/gcc/cp/call.c:1746
0x101e8593 implicit_conversion
../../gcc/gcc/cp/call.c:1837
0x101eaecf add_function_candidate
../../gcc/gcc/cp/call.c:2191
0x101ecbe7 add_candidates
../../gcc/gcc/cp/call.c:5491
0x101ed863 build_new_method_call_1
../../gcc/gcc/cp/call.c:8656
0x101ed863 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
../../gcc/gcc/cp/call.c:8856
0x101ef2af build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
../../gcc/gcc/cp/call.c:8387
0x101f2e67 perform_direct_initialization_if_possible(tree_node*, tree_node*,
bool, int)
../../gcc/gcc/cp/call.c:10091
0x103b4e53 build_static_cast_1
../../gcc/gcc/cp/typeck.c:6795
0x103b6597 cp_build_c_cast(tree_node*, t
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Subject: [Bug c++/78898] [7 Regression] ICE: in get_template_base, at cp/pt.c:19665
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78898
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
Target Milestone|--- |7.0
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r243870:
commit 784c77ce8cac38defa95faf85144c8f02848dfdb
Author: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Dec 21 19:38:50 2016 +0000
PR c++/42329 - deducing base template for template template arg
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Subject: [Bug tree-optimization/71518] [6 Regression] wrong code at -O3 on x86_64-linux-gnu in 64-bit mode (not in 32-bit mode)
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
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Subject: [Bug c++/72707] [5/6 regression] local anonymous union member hides names in the same scope
Date: Thu, 22 Dec 2016 08:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[5/6/7 regression] local |[5/6 regression] local
|anonymous union member |anonymous union member
|hides names in the same |hides names in the same
|scope |scope
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug bootstrap/78817] stage2 bootstrap failure in vec.h:1613:5: error: argument 1 null where non-null expected after r243661
Date: Thu, 22 Dec 2016 08:54:00 -0000
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Dec 22 08:53:56 2016
New Revision: 243883
URL: https://gcc.gnu.org/viewcvs?rev=243883&root=gcc&view=rev
Log:
PR bootstrap/78817
* vec.h (vec<T, va_heap, vl_ptr>::safe_grow_cleared): Revert
2016-12-15 change.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/vec.h
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Subject: [Bug c++/77830] internal compiler error: in output_constructor_regular_field, at varasm.c:4968, when using constexpr (with testcase)
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug bootstrap/78817] stage2 bootstrap failure in vec.h:1613:5: error: argument 1 null where non-null expected after r243661
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/78897] [6/7 Regression] ICE: in output_constructor_regular_field, at varasm.c:5019
Date: Thu, 22 Dec 2016 09:14:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |6.4
Summary|ICE: in |[6/7 Regression] ICE: in
|output_constructor_regular_ |output_constructor_regular_
|field, at varasm.c:5019 |field, at varasm.c:5019
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r234636. We have several very similar PRs, I bet this is a dup of
one of them.
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Subject: [Bug c++/78897] [6/7 Regression] ICE: in output_constructor_regular_field, at varasm.c:5019
Date: Thu, 22 Dec 2016 09:24:00 -0000
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--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Please notice that I've reduced this from a ICE on invalid posted on Reddit:
markus@x4 /tmp % cat const.ii
constexpr void *operator new(long unsigned int, void *where) { return where; }
class Optional {
public:
explicit constexpr Optional() : _value{0} {}
constexpr Optional(const Optional &o) : _dummy{0} {
new (&this->_value) int(o._value);
}
private:
union {
char _dummy;
int _value;
};
};
int main() {
constexpr Optional opt1{};
constexpr Optional opt2{opt1};
}
markus@x4 /tmp % g++ const.ii
const.ii: In function ‘int main()’:
const.ii:21:22: internal compiler error: in complete_ctor_at_level_p, at
expr.c:6022
constexpr Optional opt2{opt1};
^~~~
0xa2db7d complete_ctor_at_level_p(tree_node const*, long, tree_node const*)
/home/markus/gcc/gcc/expr.c:6022
0xa2df01 categorize_ctor_elements_1
/home/markus/gcc/gcc/expr.c:5973
0xa2ddd0 categorize_ctor_elements_1
/home/markus/gcc/gcc/expr.c:5911
0xaefbcc gimplify_init_constructor
/home/markus/gcc/gcc/gimplify.c:4622
0xaf1216 gimplify_modify_expr_rhs
/home/markus/gcc/gcc/gimplify.c:5063
0xaf7f89 gimplify_modify_expr
/home/markus/gcc/gcc/gimplify.c:5399
0xae65e2 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/markus/gcc/gcc/gimplify.c:11185
0xae9b18 gimplify_stmt(tree_node**, gimple**)
/home/markus/gcc/gcc/gimplify.c:6460
0xaf5ba0 gimplify_and_add(tree_node*, gimple**)
/home/markus/gcc/gcc/gimplify.c:435
0xaf5ba0 gimplify_decl_expr
/home/markus/gcc/gcc/gimplify.c:1651
0xae656a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/markus/gcc/gcc/gimplify.c:11380
0xae9b18 gimplify_stmt(tree_node**, gimple**)
/home/markus/gcc/gcc/gimplify.c:6460
0xae5778 gimplify_cleanup_point_expr
/home/markus/gcc/gcc/gimplify.c:6211
0xae5778 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/markus/gcc/gcc/gimplify.c:11560
0xae9b18 gimplify_stmt(tree_node**, gimple**)
/home/markus/gcc/gcc/gimplify.c:6460
0xae6d6b gimplify_statement_list
/home/markus/gcc/gcc/gimplify.c:1704
0xae6d6b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/markus/gcc/gcc/gimplify.c:11612
0xae9b18 gimplify_stmt(tree_node**, gimple**)
/home/markus/gcc/gcc/gimplify.c:6460
0xaeace5 gimplify_bind_expr
/home/markus/gcc/gcc/gimplify.c:1277
0xae587a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/markus/gcc/gcc/gimplify.c:11384
Not sure if this is cased by the same underlying bug.
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Subject: [Bug c++/78896] [C++17] Segmentation fault occurs when use variable initialized using structured binding with capture-by-ref lambda
Date: Thu, 22 Dec 2016 09:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78896
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Summary|Segmentation fault occurs |[C++17] Segmentation fault
|when use variable |occurs when use variable
|initialized using |initialized using
|structured binding with |structured binding with
|capture-by-ref lambda |capture-by-ref lambda
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is interesting.
In [dcl.decomp]/4, there doesn't seem to be enough restrictions:
"Otherwise, all of E’s non-static data members shall be public direct members
of E or of the same unambiguous
public base class of E, E shall not have an anonymous union member, and the
number of elements in the
identifier-list shall be equal to the number of non-static data members of E.
Designating the non-static data
members of E as m 0 , m 1 , m 2 , ... (in declaration order), each v i is the
name of an lvalue that refers to the
member m i of e and whose type is cv T i , where T i is the declared type of
that member; the referenced type is
cv T i ."
It doesn't even say that E must be a class type (but what else can have
non-static data members).
And a lambda-expression has a class type [expr.prim.lambda]/4
"The type of the lambda-expression (which is also the type of the closure
object) is a unique, unnamed
non-union class type — called the closure type — whose properties are described
below. This class type is not
an aggregate type (8.6.1). The closure type is declared in the smallest block
scope, class scope, or namespace
scope that contains the corresponding lambda-expression. [ Note: This
determines the set of namespaces
and classes associated with the closure type (3.4.2). The parameter types of a
lambda-declarator do not
affect these associated namespaces and classes. — end note ]"
so this effectively allows taking apart the implementation defined non-static
data members of the lambda type. Shall that be allowed? Does the standard say
anything about the members of the lambda class type (i.e. can we e.g. declare
all of them to be private and reject the testcase from this reason)? Other
implementation defined types that could have similar weird effects are e.g.
va_list.
#include <stdarg.h>
void foo (int x, ...) {
va_list ap;
va_start (ap, x);
auto [b, c, d, e] { *ap };
va_end (ap);
}
On x86_64-linux with -m32, both g++ and clang++ correctly reject this, because
type of *ap is char. With -m64, g++ rejects this with:
pr78896-2.C: In function ‘void foo(int, ...)’:
pr78896-2.C:5:8: error: cannot decompose non-array non-class type
‘__va_list_tag’
auto [b, c, d, e] { *ap };
^~~~~~~~~~~~
because we do not consider __va_list_tag a class type, just an implementation
created record type. clang++ actually accepts this with -m64.
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Subject: [Bug tree-optimization/78895] [6 Regression] wrong code with -O1 when setting union twice since 6.3
Date: Thu, 22 Dec 2016 10:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |6.4
Summary|[6 regression] wrong code |[6 Regression] wrong code
|with -O1 when setting union |with -O1 when setting union
|twice since 6.3 |twice since 6.3
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
union U { int i; _Bool b; };
void __attribute__((noinline, noclone))
foo (union U u)
{
if (u.b)
__builtin_abort ();
}
int
main ()
{
union U u;
u.i = 10;
u.b = 0;
foo (u);
return 0;
}
It is fre1 that removes the u.b = 0; store. Doesn't fail on the trunk, testing
now if it ever failed on trunk this fall.
>From gcc-bugs-return-548659-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 10:11:54 2016
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Subject: [Bug c++/78826] jump bypasses non-POD
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2016-12-22
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Subject: [Bug fortran/78881] [F03] reading from string with DTIO procedure does not work properly
Date: Thu, 22 Dec 2016 10:19:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> It seems like the first character is being swallowed somewhere ...
Moreover the EOF is supposed to be an EOR?
>From gcc-bugs-return-548661-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 10:20:05 2016
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Subject: [Bug driver/70936] Hard-coded C++ header paths and relocation problem
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--- Comment #13 from Rolf Eike Beer <eike@sf-mail.de> ---
6.2.0 also broken, 5.4.0 is fine.
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Subject: [Bug c++/78894] [7 Regression] [c++17] ICE for std::list template deduction from std:: initializer_list
Date: Thu, 22 Dec 2016 10:41:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.0
Summary|[c++17] ICE for std::list |[7 Regression] [c++17] ICE
|template deduction from |for std::list template
|std:: initializer_list |deduction from std::
| |initializer_list
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r240756 - P0091R2.
Reduced testcase for the ICE (with -std=c++17):
struct A
{
A ();
};
template <typename T>
struct C
{
C (int, const T &, const A & = A ());
};
C a = { 0, 0 };
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Subject: [Bug c++/78890] [5/6/7 Regression] ICE on invalid reference type in union
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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| |paolo at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
ICE started with r211318.
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Subject: [Bug c++/78890] [5/6/7 Regression] ICE on invalid reference type in union
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Subject: [Bug c++/78890] [5/6/7 Regression] ICE on invalid reference type in union
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note that clang++ rejects this in all C++ modes. So, are reference types
really allowed in anonymous unions? If they are valid, the ICE is because the
VAR_DECL b has REFERENCE_TYPE, but also has DECL_VALUE_EXPR which has type int
rather than int &.
Untested:
--- gcc/cp/decl2.c.jj 2016-11-15 16:18:49.000000000 +0100
+++ gcc/cp/decl2.c 2016-12-22 11:59:14.656688431 +0100
@@ -1510,6 +1510,10 @@ build_anon_union_vars (tree type, tree o
TREE_STATIC (decl) = TREE_STATIC (base);
DECL_EXTERNAL (decl) = DECL_EXTERNAL (base);
+ if (TREE_CODE (TREE_TYPE (field)) == REFERENCE_TYPE
+ && REFERENCE_REF_P (ref))
+ ref = TREE_OPERAND (ref, 0);
+
SET_DECL_VALUE_EXPR (decl, ref);
DECL_HAS_VALUE_EXPR_P (decl) = 1;
fixes the ICE, even
template <typename T>
int foo() {
union {
int a;
int &b = a;
};
a = 1;
auto c = b + 1;
return c;
}
template <typename T>
T bar() {
union {
T a;
T &b = a;
};
a = 1;
auto c = b + 1;
return c;
}
template <typename T, typename U>
T baz() {
union {
T a;
U b = a;
};
a = 1;
auto c = b + 1;
return c;
}
int a = foo<int> ();
int b = bar<int> ();
int c = baz<int, int &> ();
compiles. But it doesn't make sense to spend further time on this until it is
clear if it is valid or not.
>From gcc-bugs-return-548666-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 11:25:46 2016
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Subject: [Bug tree-optimization/78887] [7 Regression] Failure to build aarch64 allmodconfig Linux kernel 4.9
Date: Thu, 22 Dec 2016 11:25:00 -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 #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
'_GLOBAL__sub_D_65535_0_sha1_ce_glue.c' to
'_GLOBAL__sub_D_65535_0___odr_asan.__mod_cpu__cpu_feature_match_SHA1_device_table'
difference is a non-issue, the symbol name for the static dtors includes name
of the first symbol, which can change any time. The symbol is local anyway.
>From gcc-bugs-return-548667-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 11:28:51 2016
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Subject: [Bug sanitizer/78513] [7 Regression] Failure to build linux kernel with KASAN support
Date: Thu, 22 Dec 2016 11:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|INVALID |FIXED
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, since r243441 -fsanitize-use-after-scope is enabled by default only for
-fsanitize=address, not for -fsanitize=kernel-address, so for kernel one has to
enable it manually. So marking as fixed instead.
>From gcc-bugs-return-548668-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 11:49:25 2016
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Subject: [Bug middle-end/78858] [7 Regression] Bogus -Wnonnull warning involving strcmp with -fsanitize=undefined
Date: Thu, 22 Dec 2016 11:49:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Dec 22 11:48:39 2016
New Revision: 243884
URL: https://gcc.gnu.org/viewcvs?rev=243884&root=gcc&view=rev
Log:
PR middle-end/78858
* c-c++-common/ubsan/pr78858.c: New test.
* gcc.dg/nonnull-5.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/ubsan/pr78858.c
trunk/gcc/testsuite/gcc.dg/nonnull-5.c
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548669-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 11:51:43 2016
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Subject: [Bug middle-end/78858] [7 Regression] Bogus -Wnonnull warning involving strcmp with -fsanitize=undefined
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed with r243874.
>From gcc-bugs-return-548670-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 11:52:17 2016
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Subject: [Bug bootstrap/78859] [7 Regression] profiledbootstrap failure caused by -Werror=nonnull
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed with r243874, if not, please reopen.
>From gcc-bugs-return-548671-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 11:59:29 2016
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Subject: [Bug sanitizer/78663] [7 Regression] Hundreds of asan failures on x86_64-apple-darwin10 at r243019
Date: Thu, 22 Dec 2016 11:59:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This probably needs to go to upstream compiler-rt first. Also, it would be
cleaner not to define SI_MEMMEM to 1 on Windows and move the comment there.
>From gcc-bugs-return-548672-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 12:24:45 2016
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Subject: [Bug target/78660] [7 Regression] 7.0 bootstrap fail on mips64el-unknow-linux: configure-stage2-target-libgcc' failed
Date: Thu, 22 Dec 2016 12:24:00 -0000
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YunQiang Su <syq at debian dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |syq at debian dot org
--- Comment #6 from YunQiang Su <syq at debian dot org> ---
With revert some change, with patch:
Index: gcc-7-7-20161217/src/gcc/combine.c
===================================================================
--- gcc-7-7-20161217.orig/src/gcc/combine.c
+++ gcc-7-7-20161217/src/gcc/combine.c
@@ -9972,13 +9972,13 @@ reg_nonzero_bits_for_combine (const_rtx
(DF_LR_IN (ENTRY_BLOCK_PTR_FOR_FN (cfun)->next_bb),
REGNO (x)))))
{
- /* Note that, even if the precision of last_set_mode is lower than that
- of mode, record_value_for_reg invoked nonzero_bits on the register
- with nonzero_bits_mode (because last_set_mode is necessarily integral
- and HWI_COMPUTABLE_MODE_P in this case) so bits in nonzero_bits_mode
- are all valid, hence in mode too since nonzero_bits_mode is defined
- to the largest HWI_COMPUTABLE_MODE_P mode. */
- *nonzero &= rsp->last_set_nonzero_bits;
+ unsigned HOST_WIDE_INT mask = rsp->last_set_nonzero_bits;
+
+ if (GET_MODE_PRECISION (rsp->last_set_mode) < GET_MODE_PRECISION (mode))
+ /* We don't know anything about the upper bits. */
+ mask |= GET_MODE_MASK (mode) ^ GET_MODE_MASK (rsp->last_set_mode);
+
+ *nonzero &= mask;
return NULL;
}
>From gcc-bugs-return-548673-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 12:25:26 2016
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Subject: [Bug fortran/78865] ICE in create_tmp_var, at gimple-expr.c:473
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78865
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem is that gfc_conv_procedure_call changes the type of the sub
function
from one returning void to one returning int:
/* If there are alternate return labels, function type should be
integer. Can't modify the type in place though, since it can be shared
with other functions. For dummy arguments, the typing is done to
this result, even if it has to be repeated for each call. */
if (has_alternate_specifier
&& TREE_TYPE (TREE_TYPE (TREE_TYPE (se->expr))) != integer_type_node)
{
if (!sym->attr.dummy)
{
TREE_TYPE (sym->backend_decl)
= build_function_type (integer_type_node,
TYPE_ARG_TYPES (TREE_TYPE (sym->backend_decl)));
se->expr = gfc_build_addr_expr (NULL_TREE, sym->backend_decl);
}
else
TREE_TYPE (TREE_TYPE (TREE_TYPE (se->expr))) = integer_type_node;
}
While this can work for implicitly defined subroutine calls, if
sym->backend_decl
is actually merged with the subroutine definition, changing it afterwards just
doesn't work. Either it should be diagnosed as bug earlier (noting that caller
expects alternate return, but callee does not), or at least it shouldn't change
the type of the function, but do something different (even just generate
__builtin_trap instead of the call).
>From gcc-bugs-return-548674-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 12:26:32 2016
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Subject: [Bug target/78660] [7 Regression] 7.0 bootstrap fail on mips64el-unknow-linux: configure-stage2-target-libgcc' failed
Date: Thu, 22 Dec 2016 12:26:00 -0000
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--- Comment #7 from YunQiang Su <syq at debian dot org> ---
(In reply to YunQiang Su from comment #6)
> With revert some change, with patch:
>
> Index: gcc-7-7-20161217/src/gcc/combine.c
> ===================================================================
> --- gcc-7-7-20161217.orig/src/gcc/combine.c
> +++ gcc-7-7-20161217/src/gcc/combine.c
> @@ -9972,13 +9972,13 @@ reg_nonzero_bits_for_combine (const_rtx
> (DF_LR_IN (ENTRY_BLOCK_PTR_FOR_FN (cfun)->next_bb),
> REGNO (x)))))
> {
> - /* Note that, even if the precision of last_set_mode is lower than
> that
> - of mode, record_value_for_reg invoked nonzero_bits on the register
> - with nonzero_bits_mode (because last_set_mode is necessarily
> integral
> - and HWI_COMPUTABLE_MODE_P in this case) so bits in nonzero_bits_mode
> - are all valid, hence in mode too since nonzero_bits_mode is defined
> - to the largest HWI_COMPUTABLE_MODE_P mode. */
> - *nonzero &= rsp->last_set_nonzero_bits;
> + unsigned HOST_WIDE_INT mask = rsp->last_set_nonzero_bits;
> +
> + if (GET_MODE_PRECISION (rsp->last_set_mode) < GET_MODE_PRECISION
> (mode))
> + /* We don't know anything about the upper bits. */
> + mask |= GET_MODE_MASK (mode) ^ GET_MODE_MASK (rsp->last_set_mode);
> +
> + *nonzero &= mask;
> return NULL;
> }
This can make it buildable now.
>From gcc-bugs-return-548675-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 12:41:32 2016
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Subject: [Bug tree-optimization/78899] New: [7 Regression] Vestorized loop with optmized mask stores motion is completely deleted after r242520.
Date: Thu, 22 Dec 2016 12:41:00 -0000
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Bug ID: 78899
Summary: [7 Regression] Vestorized loop with optmized mask
stores motion is completely deleted after r242520.
Product: gcc
Version: 7.0
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Created attachment 40395
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40395&action=edit
test-case to reproduce - compile with -Ofast -mavx2 -fopenmp
We noticed a huge regression on avx2 and knl machines on couple improtant
benchmarks. The issue can be reproduced with attached test-case.
Before given revision produced assembly contains vptest and vpmaskmovd
instructions but after this revision newly created basic blocks which are
created for sinking masked stores are deleted:
grep 'block 22' test.c.156t.vect
test.c:11:15: note: Create new block 22 to sink mask stores.test.c:11:15: note:
Move stmt to created bb
Removing basic block 22
Attached test-case must be compiled with -Ofast -mavx2 -fopenmp options to
reproduce.
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Subject: [Bug testsuite/52641] Test cases fail for 16-bit int targets
Date: Thu, 22 Dec 2016 12:43:00 -0000
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--- Comment #13 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Thu Dec 22 12:42:35 2016
New Revision: 243885
URL: https://gcc.gnu.org/viewcvs?rev=243885&root=gcc&view=rev
Log:
gcc/testsuite/
PR testsuite/52641
* gcc.dg/pr35258.c (main) <temp>: Use an integer value that has
at least a size of 4.
* gcc.dg/Walloca-1.c (foo1): Use alloca with 30000 (instead of 90000).
* gcc.dg/graphite/pr46185.c: Require int32plus, size32plus.
* gcc.dg/graphite/isl-ast-op-select.c: Same.
* gcc.dg/graphite/pr42205-1.c: Require int32plus.
* gcc.dg/graphite/pr42221.c: Same.
* gcc.dg/tree-ssa/pr65136.c: Same.
* gcc.dg/tree-ssa/sra-20.c: Same.
* gcc.dg/graphite/scop-0.c: Require size32plus.
* gcc.dg/graphite/scop-22.c: Same.
* gcc.dg/graphite/scop-3.c: Same.
* gcc.dg/graphite/scop-dsyr2k.c: Same.
* gcc.dg/graphite/scop-dsyrk.c: Same.
* gcc.dg/graphite/scop-mvt.c: Same.
* gcc.dg/graphite/scop-sor.c: Same.
* gcc.dg/tree-ssa/pr68529-3.c: Same.
* gcc.dg/tree-ssa/pr66449.c [long != pointer]: Use intptr_t if.
* gcc.dg/tree-ssa/pr70919.c [int <= 2]: Use 32-bit int as needed.
* gcc.dg/tree-ssa/pr71408.c: Same.
* gcc.dg/tree-ssa/ssa-dom-thread-8.c (f2) [long != pointer]: Use
uintptr_t instead of long for int representation of address.
* gcc.dg/tree-ssa/tailcall-7-run.c: Require trampolines.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/Walloca-1.c
trunk/gcc/testsuite/gcc.dg/graphite/isl-ast-op-select.c
trunk/gcc/testsuite/gcc.dg/graphite/pr42205-1.c
trunk/gcc/testsuite/gcc.dg/graphite/pr42221.c
trunk/gcc/testsuite/gcc.dg/graphite/pr46185.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-0.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-22.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-3.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-dsyr2k.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-dsyrk.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-mvt.c
trunk/gcc/testsuite/gcc.dg/graphite/scop-sor.c
trunk/gcc/testsuite/gcc.dg/pr35258.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr65136.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr66449.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr68529-3.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr70919.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr71408.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/sra-20.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-8.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/tailcall-7-run.c
>From gcc-bugs-return-548677-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 12:46:29 2016
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Subject: [Bug fortran/78865] [5/6/7 Regression] ICE in create_tmp_var, at gimple-expr.c:473
Date: Thu, 22 Dec 2016 12:46:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |5.5
Summary|ICE in create_tmp_var, at |[5/6/7 Regression] ICE in
|gimple-expr.c:473 |create_tmp_var, at
| |gimple-expr.c:473
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The warning likely should go into compare_actual_formal
(the case where for f->sym == NULL there is no arg->label or vice versa).
For the actual fix, dunno if the Fortran FE has some flag that sym is a
definition rather than just implicit declaration, if not, it can be discovered
e.g. from sym->backend_decl - if it has DECL_INITIAL non-NULL, or DECL_RESULT
non-NULL, then we are looking certainly for a definition, which is too late to
be changed.
Started most likely with r162557 (r162550 doesn't ICE, r162560 ICEs).
>From gcc-bugs-return-548678-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 12:54:50 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78900] New: ICE in gcc.target/powerpc/signbit-3.c
Date: Thu, 22 Dec 2016 12:54:00 -0000
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Bug ID: 78900
Summary: ICE in gcc.target/powerpc/signbit-3.c
Product: gcc
Version: 6.3.1
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Priority: P3
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Target Milestone: ---
Target: powerpc64*-*-*
Regtesting for -mcpu=power9 turned this up. Version tested is gcc-6-branch
revision 243723.
/home/sawdey/src/gcc/gcc-6-branch/build/gcc/xgcc
-B/home/sawdey/src/gcc/gcc-6-branch/build/gcc/
/home/sawdey/src/gcc/gcc-6-branch/gcc-6-branch/gcc/testsuite/gcc.target/powerpc/signbit-3.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -mcpu=power7 -O2
-mfloat128 -lm -Wl,-rpath=/tmp/lib64 -lm -mcpu=power9 -o ./signbit-3.exe
/home/sawdey/src/gcc/gcc-6-branch/gcc-6-branch/gcc/testsuite/gcc.target/powerpc/signbit-3.c:
In function 'test_signbit_gpr.isra.1':
/home/sawdey/src/gcc/gcc-6-branch/gcc-6-branch/gcc/testsuite/gcc.target/powerpc/signbit-3.c:111:1:
internal compiler error: in rs6000_split_signbit, at
config/rs6000/rs6000.c:23106
0x109de9f3 rs6000_split_signbit(rtx_def*, rtx_def*)
../../gcc-6-branch/gcc/config/rs6000/rs6000.c:23106
0x10b535cb gen_split_119(rtx_insn*, rtx_def**)
../../gcc-6-branch/gcc/config/rs6000/rs6000.md:4626
0x10c6ceb3 split_12
../../gcc-6-branch/gcc/config/rs6000/rs6000.md:4625
0x10c71287 split_15
../../gcc-6-branch/gcc/config/rs6000/rs6000.md:330
0x10c71287 split_insns(rtx_def*, rtx_insn*)
../../gcc-6-branch/gcc/config/rs6000/rs6000.md:411
0x10391e87 try_split(rtx_def*, rtx_insn*, int)
../../gcc-6-branch/gcc/emit-rtl.c:3658
0x10631cbb split_insn
../../gcc-6-branch/gcc/recog.c:2865
0x10637d37 split_all_insns()
../../gcc-6-branch/gcc/recog.c:2955
0x10637dbb rest_of_handle_split_after_reload
../../gcc-6-branch/gcc/recog.c:3891
0x10637dbb execute
../../gcc-6-branch/gcc/recog.c:3920
Please submit a full bug report,
with preprocessed source if appropriate.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78901
Bug ID: 78901
Summary: internal compiler error: verify_gimple failed
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: h2+bugs at fsfe dot org
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Created attachment 40396
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40396&action=edit
intermediate file for test_basic_aggregate
Looks related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78777 , but since
I am on a newer snapshot I wanted to report the following errors we are seeing
in nightly builds of the SeqAn template library.
% g++7 --version
g++7 (FreeBSD Ports Collection) 7.0.0 20161218 (experimental)
% uname -a
FreeBSD celegans.imp.fu-berlin.de 11.0-RELEASE-p1 FreeBSD 11.0-RELEASE-p1 #0
r306420: Thu Sep 29 01:43:23 UTC 2016
root@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
% cd /home/mi/h4nn3s/devel/seqan_local-build/release/tests/basic &&
/usr/local/libexec/ccache/g++7 -DSEQAN_DISABLE_VERSION_CHECK
-DSEQAN_ENABLE_TESTING=1 -DSEQAN_HAS_BZIP2=1 -DSEQAN_HAS_EXECINFO=1
-DSEQAN_HAS_OPENMP=1 -DSEQAN_HAS_ZLIB=1 -D_FILE_OFFSET_BITS=64
-D_GLIBCXX_USE_C99=1 -D_LARGEFILE_SOURCE
-I/home/mi/h4nn3s/devel/seqan_local/include -fdiagnostics-color -save-temps
-W -Wall -pedantic -fstrict-aliasing -Wstrict-aliasing -fopenmp -O3
-DSEQAN_GLOBAL_EXCEPTION_HANDLER=1 -o
CMakeFiles/test_basic_aggregate.dir/test_basic_aggregate.cpp.o -c
/home/mi/h4nn3s/devel/seqan_local/tests/basic/test_basic_aggregate.cpp
In file included from
/home/mi/h4nn3s/devel/seqan_local/tests/basic/test_basic_aggregate.cpp:41:0:
/home/mi/h4nn3s/devel/seqan_local/tests/basic/test_basic_aggregate.h: In
function 'void SEQAN_TEST_test_basic_aggregates_tuple_base_stream_output()
[with bool speed_up_dummy_to_prevent_compilation_of_unused_tests_ = true]':
/home/mi/h4nn3s/devel/seqan_local/tests/basic/test_basic_aggregate.h:1646:77:
error: statement marked for throw in middle of block
SEQAN_DEFINE_TEST(test_basic_aggregates_tuple_base_stream_output)
^
# .MEM_322 = VDEF <.MEM_320>
snprintf (&buffer, 14, &VALUE, 1);
/home/mi/h4nn3s/devel/seqan_local/tests/basic/test_basic_aggregate.h:1646:77:
internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
------------------------------------------------------
% cd /home/mi/h4nn3s/devel/seqan_local-build/release/tests/random &&
/usr/local/libexec/ccache/g++7 -DSEQAN_DISABLE_VERSION_CHECK
-DSEQAN_ENABLE_TESTING=1 -DSEQAN_HAS_BZIP2=1 -DSEQAN_HAS_EXECINFO=1
-DSEQAN_HAS_OPENMP=1 -DSEQAN_HAS_ZLIB=1 -D_FILE_OFFSET_BITS=64
-D_GLIBCXX_USE_C99=1 -D_LARGEFILE_SOURCE
-I/home/mi/h4nn3s/devel/seqan_local/include -fdiagnostics-color -save-temps
-W -Wall -pedantic -fstrict-aliasing -Wstrict-aliasing -fopenmp -O3
-DSEQAN_GLOBAL_EXCEPTION_HANDLER=1 -o
CMakeFiles/test_random.dir/test_random.cpp.o -c
/home/mi/h4nn3s/devel/seqan_local/tests/random/test_random.cpp
In file included from
/home/mi/h4nn3s/devel/seqan_local/tests/random/test_random.cpp:42:0:
/home/mi/h4nn3s/devel/seqan_local/tests/random/test_random_beta.h: In function
'void SEQAN_TEST_test_random_beta_write() [with bool
speed_up_dummy_to_prevent_compilation_of_unused_tests_ = true]':
/home/mi/h4nn3s/devel/seqan_local/tests/random/test_random_beta.h:122:77:
error: statement marked for throw in middle of block
SEQAN_DEFINE_TEST(test_random_beta_write)
^
# .MEM_954 = VDEF <.MEM_953>
snprintf (&buffer, 32, "%g", 5.0e-1);
/home/mi/h4nn3s/devel/seqan_local/tests/random/test_random_beta.h:122:77:
error: statement marked for throw in middle of block
# .MEM_1015 = VDEF <.MEM_1014>
snprintf (&buffer, 32, "%g",
2.99999999999999988897769753748434595763683319091796875e-1);
/home/mi/h4nn3s/devel/seqan_local/tests/random/test_random_beta.h:122:77:
internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
---------------------------------------------------------------------
% cd /home/mi/h4nn3s/devel/seqan_local-build/release/tests/blast &&
/usr/local/libexec/ccache/g++7 -DSEQAN_DISABLE_VERSION_CHECK
-DSEQAN_ENABLE_TESTING=1 -DSEQAN_HAS_BZIP2=1 -DSEQAN_HAS_EXECINFO=1
-DSEQAN_HAS_OPENMP=1 -DSEQAN_HAS_ZLIB=1 -D_FILE_OFFSET_BITS=64
-D_GLIBCXX_USE_C99=1 -D_LARGEFILE_SOURCE
-I/home/mi/h4nn3s/devel/seqan_local/include -fdiagnostics-color -save-temps
-W -Wall -pedantic -fstrict-aliasing -Wstrict-aliasing -fopenmp -O3
-DSEQAN_GLOBAL_EXCEPTION_HANDLER=1 -o
CMakeFiles/test_blast.dir/test_blast.cpp.o -c
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast.cpp
In file included from
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast.cpp:47:0:
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast_output.h: In function
'void _testBlastOutputWriteFile(TFile&, seqan::BlastIOContext<TScore, p, h>&,
const TRecords&, const BlastReport&) [with TFile = std::basic_fstream<char>;
TScore = seqan::Score<int, seqan::ScoreMatrix<seqan::SimpleType<unsigned char,
seqan::AminoAcid_>, seqan::Blosum62_> >; TRecords =
seqan::String<seqan::BlastRecord<seqan::BlastMatch<seqan::Gaps<seqan::String<seqan::SimpleType<unsigned
char, seqan::AminoAcid_>, seqan::Alloc<> >, seqan::Tag<seqan::ArrayGaps_> >,
seqan::Gaps<seqan::String<seqan::SimpleType<unsigned char, seqan::AminoAcid_>,
seqan::Alloc<> >, seqan::Tag<seqan::ArrayGaps_> >, unsigned int,
seqan::Segment<seqan::String<char, seqan::Alloc<> >, seqan::InfixSegment>,
seqan::String<char, seqan::Alloc<> > > > >; seqan::BlastProgram p =
(seqan::BlastProgram)255; seqan::BlastTabularSpec h =
(seqan::BlastTabularSpec)255]':
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast_output.h:44:1: error:
statement marked for throw in middle of block
_testBlastOutputWriteFile(TFile & file,
^~~~~~~~~~~~~~~~~~~~~~~~~
# .MEM_2054 = VDEF <.MEM_2040>
snprintf (&buffer, 100, "%+d", _520);
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast_output.h:44:1: error:
statement marked for throw in middle of block
# .MEM_2050 = VDEF <.MEM_2040>
snprintf (&buffer, 100, "%+d", _525);
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast_output.h:44:1: error:
statement marked for throw in middle of block
# .MEM_2041 = VDEF <.MEM_2040>
snprintf (&buffer, 100, "%+d", _530);
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast_output.h:44:1: error:
statement marked for throw in middle of block
# .MEM_2046 = VDEF <.MEM_2045>
snprintf (&buffer, 100, "%+d", _535);
/home/mi/h4nn3s/devel/seqan_local/tests/blast/test_blast_output.h:44:1:
internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
--------------------------------------------------------
The last test failure actually appeared newly between (s20161204 or s20161211)
and s20161218. I have attached the gzipped .ii files.
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Subject: [Bug c++/78901] internal compiler error: verify_gimple failed
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--- Comment #1 from h2+bugs at fsfe dot org ---
Created attachment 40397
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40397&action=edit
intermediate file for test_blast
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Subject: [Bug c++/78901] internal compiler error: verify_gimple failed
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--- Comment #2 from h2+bugs at fsfe dot org ---
Created attachment 40398
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40398&action=edit
intermediate file for test_random
>From gcc-bugs-return-548682-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 13:06:44 2016
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 13:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78901
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
CC| |trippels at gcc dot gnu.org
Component|c++ |middle-end
Summary|internal compiler error: |[7 Regression] ICE:
|verify_gimple failed |verify_gimple failed
| |(error: statement marked
| |for throw in middle of
| |block)
Ever confirmed|0 |1
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Confirmed. Reducing...
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Subject: [Bug tree-optimization/78886] [5/6/7 Regression] Segmentation fault malloc and volatile
Date: Thu, 22 Dec 2016 13:09:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Dec 22 13:09:11 2016
New Revision: 243886
URL: https://gcc.gnu.org/viewcvs?rev=243886&root=gcc&view=rev
Log:
Fix tree-optimization/78886.
PR tree-optimization/78886
* gcc.dg/tree-ssa/pr78886.c: New test.
PR tree-optimization/78886
* tree-ssa-strlen.c (handle_builtin_malloc): Return when LHS
is equal to NULL.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr78886.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c
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Subject: [Bug tree-optimization/78886] [5/6 Regression] Segmentation fault malloc and volatile
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[5/6/7 Regression] |[5/6 Regression]
|Segmentation fault malloc |Segmentation fault malloc
|and volatile |and volatile
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-548685-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 13:25:07 2016
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Subject: [Bug fortran/68887] [6/7 regression] gfortran.dg/coarray/event_[12].f90 -fcoarray=lib -O2 -lcaf_single -latomic fails
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
If the tests are compiled on darwin with an instrumented gfortran, execution
gives
==82783==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x602000000150 at pc 0x000101b79d39 bp 0x7fff5e0a6300 sp 0x7fff5e0a62f8
READ of size 4 at 0x602000000150 thread T0
#0 0x101b79d38 in _gfortran_caf_event_query
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100020d38)
#1 0x101b59f48 in MAIN__
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100000f48)
0x602000000151 is located 0 bytes to the right of 1-byte region
[0x602000000150,0x602000000151)
allocated by thread T0 here:
#0 0x101c47f30 in wrap_calloc (/opt/gcc/gcc7a/lib/libasan.4.dylib+0x62f30)
#1 0x101b615e3 in _gfortran_caf_register
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x1000085e3)
#2 0x101b7b47d in _caf_init.1.3510
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x10002247d)
#3 0x1089a1961 (<unknown module>)
#4 0x10899d1ed (<unknown module>)
#5 0x10899c267 (<unknown module>)
#6 0x10899c2fc (<unknown module>)
#7 0x10898e479 (<unknown module>)
#8 0x1089927df (<unknown module>)
#9 0x10898d248 (<unknown module>)
#10 0x10898d035 (<unknown module>)
SUMMARY: AddressSanitizer: heap-buffer-overflow
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100020d38) in
_gfortran_caf_event_query
Shadow bytes around the buggy address:
0x1c03ffffffd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03ffffffe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03fffffff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c0400000000: fa fa fd fd fa fa fd fd fa fa 00 07 fa fa 00 06
0x1c0400000010: fa fa 03 fa fa fa 00 00 fa fa 00 06 fa fa 06 fa
=>0x1c0400000020: fa fa 07 fa fa fa 07 fa fa fa[01]fa fa fa 00 00
0x1c0400000030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==82783==ABORTING
>From gcc-bugs-return-548686-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 13:46:32 2016
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Subject: [Bug tree-optimization/78886] [5/6 Regression] Segmentation fault malloc and volatile
Date: Thu, 22 Dec 2016 13:46:00 -0000
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--- Comment #8 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> I'd say tree-ssa-strlen.c is not the pass that should remove the malloc.
We probably want another PR about this, because a malloc whose return value is
ignored should not have survived all the way to the strlen pass.
gimple_fold_builtin looks like a place where we could handle this. I don't know
if there is some attribute that could be put on malloc so that DCE would handle
it automatically...
>From gcc-bugs-return-548687-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 13:56:00 2016
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 13:56:00 -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> ---
Started with r242674, however I'll wait for reduced test-case to isolate a
first faulty revision with -fprintf-return-value.
I'm going to wait due to: error: ‘__builtin_addressof’ was not declared in this
scope.
>From gcc-bugs-return-548688-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 14:10:07 2016
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Subject: [Bug tree-optimization/78902] New: Missed malloc optimizations: malloc w/ LHS and zero argument
Date: Thu, 22 Dec 2016 14:10:00 -0000
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Bug ID: 78902
Summary: Missed malloc optimizations: malloc w/ LHS and zero
argument
Product: gcc
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This is follow-up of PR78886.
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Subject: [Bug tree-optimization/78886] [5/6 Regression] Segmentation fault malloc and volatile
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--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #8)
> (In reply to Jakub Jelinek from comment #5)
> > I'd say tree-ssa-strlen.c is not the pass that should remove the malloc.
>
> We probably want another PR about this, because a malloc whose return value
> is ignored should not have survived all the way to the strlen pass.
> gimple_fold_builtin looks like a place where we could handle this. I don't
> know if there is some attribute that could be put on malloc so that DCE
> would handle it automatically...
Yep, I've just created PR78902.
>From gcc-bugs-return-548690-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 14:13:42 2016
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40399
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Patch candidate
Would be such change acceptable in GCC 7, or should be wait for GCC 8?
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Subject: [Bug c/78903] New: __attribute__((section(".ram"))) ignored with -Os or -flto
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Bug ID: 78903
Summary: __attribute__((section(".ram"))) ignored with -Os or
-flto
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Created attachment 40400
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example for amd64 linux where a function in should-be-crashing .data is inlined
into regular text
When function calls are inlined due to -Os or -flto, an
__attribute__((section(".ram"))) gets ignored.
This bites for example when GCC somewhere before 5.4 started inlining flash
writing sequences on ARM CortexM3 EFM32 chips in emlib where such an attribute
should have made sure that the flash is not accessed for program code during
the flash operation; there, it surfaced due to link time optimization.
I've created a minimal test case that seems equivalent to me, it is attached as
test.c. Instead of moving code to RAM like in the original but
harder-to-reproduce example on ARM, it is placing a test function `f()` in
".data", which on my system makes the program segfault when the f is invoked.
When compiled without optimizations ("gcc-7 test.c -o test"), the resulting
program crashes as expected, probably trying to execute ".data" and running
into protections. In the original microcontroller example, that crash would
have been a successful execution from RAM.
With "gcc-7 -Os test.c -o test", the call to `f()` is inlined and the program
exits successfully. In the original example, this would have a concurrent
access to flash and would have caused some undefined state in the processor.
In both cases, the compiler outputs "Warning: ignoring changed section
attributes for .data"; there is no equivalent output in the original ARM
example as ".ram" is a valid section there in the linker script.
My build system is Debian sid on amd64 running linux 4.9.0-rc8. The behavior
was obsered on arm-none-eabi-gcc 5.4, and on "regular" (amd64 debian built) gcc
6.2.1-7 and 7-20161217-1.
As a workaround, I'm currently marking the function __attribute__((noinline)).
I might be having a "x-y problem" with the compiler here as my main intention
is "keep your $pc off flash until this call returns" but I tell it "copy this
to ram" and thus need to enhance the instructions to "and don't place copies
anywhere else" and would appreciate suggestions on how to do it better, but
__attribute__((section(".ram"))) seems to be the accepted way of doing it. A
short inquery on freenode/#gcc indicated that this might be an optimizer bug.
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
The p=malloc(0) transformation looks strange.
(I never know if we are supposed to unlink_stmt_vdef, etc)
>From gcc-bugs-return-548693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 14:31:06 2016
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
Date: Thu, 22 Dec 2016 14:31:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #2)
> The p=malloc(0) transformation looks strange.
> (I never know if we are supposed to unlink_stmt_vdef, etc)
Yep, it's strange, should be p = NULL. As mentioned in MAN page:
If size is 0, then malloc() returns either NULL, or a unique pointer value that
can later be successfully passed to free().
I'll prepare regular patch and send it to ML.
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #3)
> Yep, it's strange, should be p = NULL. As mentioned in MAN page:
> If size is 0, then malloc() returns either NULL, or a unique pointer value
> that can later be successfully passed to free().
While I would personally be happy with malloc(0) always returning 0, IIRC some
platforms actually guarantee that malloc(0) returns a unique non-null pointer
and may be unhappy about the compiler contradicting them. I may misremember
though.
(thanks for the PR and the patch, by the way)
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Subject: [Bug c/78903] __attribute__((section(".ram"))) ignored with -Os or -flto
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
noinline is not a workaround; if you don't want some function to be inlined,
use noinline attribute, period. The section attribute itself is not a reason
not to inline (and should not be).
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Subject: [Bug c++/78898] [7 Regression] ICE: in get_template_base, at cp/pt.c:19665
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Subject: [Bug testsuite/52641] Test cases fail for 16-bit int targets
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--- Comment #14 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Thu Dec 22 15:02:43 2016
New Revision: 243889
URL: https://gcc.gnu.org/viewcvs?rev=243889&root=gcc&view=rev
Log:
gcc/testsuite/
PR testsuite/52641
* gcc.dg/fold-and-rshift-2.c [int <= 2]: Use 32-bit int as needed.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/fold-and-rshift-2.c
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Subject: [Bug middle-end/78904] New: zero-extracts are not effective
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Bug ID: 78904
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Following testcase:
--cut here--
struct S1
{
char pad1;
unsigned char val;
short pad2;
};
struct S1 test (struct S1 a, struct S1 b)
{
struct S1 r = a;
r.val = a.val + b.val;
return r;
}
--cut here--
should be compiled to something involving:
addb %dh, %ah
but is compiled to a whole sequence of:
movl %edi, %ecx
movl %esi, %eax
xorl %edx, %edx
movzbl %ch, %esi
movzbl %ah, %eax
movb %dil, %dl
addl %esi, %eax
xorw %di, %di
movb %al, %dh
movzwl %dx, %eax
orl %edi, %eax
The relevant patterns from i386.md are:
(define_insn "addqi_ext_1"
[(set (zero_extract:SI (match_operand 0 "ext_register_operand" "=Q,Q")
(const_int 8)
(const_int 8))
(plus:SI
(zero_extract:SI
(match_operand 1 "ext_register_operand" "0,0")
(const_int 8)
(const_int 8))
(match_operand:QI 2 "general_operand" "Qn,Bn")))
(clobber (reg:CC FLAGS_REG))]
and
(define_insn "*addqi_ext_2"
[(set (zero_extract:SI (match_operand 0 "ext_register_operand" "=Q")
(const_int 8)
(const_int 8))
(plus:SI
(zero_extract:SI
(match_operand 1 "ext_register_operand" "%0")
(const_int 8)
(const_int 8))
(zero_extract:SI
(match_operand 2 "ext_register_operand" "Q")
(const_int 8)
(const_int 8))))
(clobber (reg:CC FLAGS_REG))]
Combine pass tries to generate something resembling the above patterns:
(set (zero_extract:SI (reg:SI 92 [ D.1804 ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(subreg:SI (plus:QI (subreg:QI (zero_extract:SI (reg/v:SI 95 [ b ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
(reg:QI 98 [ a$val ])) 0))
but it looks that the pattern is not fully canonicalized and thus not
recognized.
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Subject: [Bug c++/42329] Deduction of template template argument via base class fails
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Dec 22 15:19:54 2016
New Revision: 243890
URL: https://gcc.gnu.org/viewcvs?rev=243890&root=gcc&view=rev
Log:
PR c++/78898 - ICE on constructor with TTP
PR c++/42329
* pt.c (unify): Don't look for a class template from a non-class.
Added:
trunk/gcc/testsuite/g++.dg/template/ttp30.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug c++/78898] [7 Regression] ICE: in get_template_base, at cp/pt.c:19665
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Dec 22 15:19:54 2016
New Revision: 243890
URL: https://gcc.gnu.org/viewcvs?rev=243890&root=gcc&view=rev
Log:
PR c++/78898 - ICE on constructor with TTP
PR c++/42329
* pt.c (unify): Don't look for a class template from a non-class.
Added:
trunk/gcc/testsuite/g++.dg/template/ttp30.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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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++/78898] [7 Regression] ICE: in get_template_base, at cp/pt.c:19665
Date: Thu, 22 Dec 2016 15:21:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-548702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 15:22:23 2016
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/66681] [Coarray] Wrong result in assigning this_image() to a complex coarray
Date: Thu, 22 Dec 2016 15:22:00 -0000
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--- Comment #9 from Damian Rouson <damian at sourceryinstitute dot org> ---
I wonder if this is related to pr78892
>From gcc-bugs-return-548703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 15:38:27 2016
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From: "chrysn at fsfe dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/78903] __attribute__((section(".ram"))) ignored with -Os or -flto
Date: Thu, 22 Dec 2016 15:38:00 -0000
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--- Comment #2 from chrysn at fsfe dot org ---
I don't care about the function being inlined in general, I just don't want it
inlined into different sections -- that's why I'd consider noinline a
workaround.
Anyhow, if that is the definite answer, I'd like to suggest the following
addition to the common-function-attributes documentation on section:
"[ of the linker instead.] The section applies when the function is placed as a
whole; it can still be inlined into code in other sections."
>From gcc-bugs-return-548704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 15:52:07 2016
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
Date: Thu, 22 Dec 2016 15:52:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #40399|0 |1
is obsolete| |
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40401
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40401&action=edit
Patch candidate v2
Well, I guess it's GCC 8 issue. I can imagine to introduce an option that would
enable optimization of malloc(0) to return NULL? Similarly, we may want a
warning for both missing LHS and malloc(0). Is it a desired feature?
>From gcc-bugs-return-548705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 15:55:36 2016
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Subject: [Bug tree-optimization/78899] [7 Regression] Vestorized loop with optmized mask stores motion is completely deleted after r242520.
Date: Thu, 22 Dec 2016 15:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-22
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40402
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40402&action=edit
gcc7-pr78899.patch
Untested fix.
>From gcc-bugs-return-548706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 15:56:30 2016
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Subject: [Bug tree-optimization/78899] [7 Regression] Vestorized loop with optmized mask stores motion is completely deleted after r242520.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-548707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 16:14:25 2016
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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/77754] [5/6/7 Regression] internal compiler error : tree code 'call_expr' is not supported in LTO streams
Date: Thu, 22 Dec 2016 16:14:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, it seems they can be hiding pretty much everywhere:
int fn3();
void (**fn5) (int[][fn3 ()]);
void fn1 () {
int a[10][fn3 ()];
(**fn5) (a);
}
ICEs with -O2 -flto, so does:
int fn3();
typedef void (*fn6) (int[][fn3 ()]);
fn6 **fn7;
void fn1 () {
int a[10][fn3 ()];
(**fn7) (a);
}
and so does:
int fn3();
typedef void (*fn6) (int[][fn3 ()]);
struct S {
fn6 **fn7;
fn6 *fn8;
fn6 fn9;
} s;
void fn1 () {
int a[10][fn3 ()];
(**s.fn7) (a);
(*s.fn8) (a);
s.fn9 (a);
}
So I'd think trying to fix it up late is just too late, we want to change it
immediately after finishing a declaration that is not a function definition.
>From gcc-bugs-return-548708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 16:37:12 2016
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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/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
Date: Thu, 22 Dec 2016 16:37:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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CC| |msebor at gcc dot gnu.org
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Warning on malloc with an unused return value sounds like a good idea to me (in
fact, it seems that all allocation functions to be declared with
warn_unused_result; i.e., all those declared with attribute alloc_size).
I also think warning on malloc(0) can be useful. GCC 7 has -Walloc-zero that
warns on all zero-size allocations. Unfortunately, it's not in -Wall or
-Wextra and has to be explicitly enabled.
Unconditionally turning malloc(0) into NULL wouldn't be safe since the call is
allowed to return a unique non-null pointer and there are implementations
(e.g., Glibc) that do return one. But doing that under an option might be
useful on targets where the system malloc returns null (though it could break
with superimposition).
I'm not sure that eliminating calls to malloc whose return value is unused is a
safe optimization. Malloc can be superimposed and the replacement version
might have important side-effects that the optimization would prevent.
>From gcc-bugs-return-548709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 17:01:42 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/77754] [5/6/7 Regression] internal compiler error : tree code 'call_expr' is not supported in LTO streams
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Perhaps doing it in grokdeclarator where build_function_type is called, if
initialized == false? But it is unclear to me where all the side-effects can
hide. E.g.
int fn3();
void fn4(int (*)[fn3 ()][fn3 () + 1][fn3 () + 2], struct S { int a[fn3 ()]; }
*);
void fn1() {
int a[10][fn3 ()][fn3 () + 1][fn3 () + 2];
fn4 (a, 0);
}
is accepted, so it can be even inside of non-array aggregate types.
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Subject: [Bug fortran/78239] [5/6/7 Regression] ICE in char_len_param_value, at fortran/decl.c:926, with -fimplicit-none
Date: Thu, 22 Dec 2016 17:06:00 -0000
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--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Thu Dec 22 17:05:13 2016
New Revision: 243891
URL: https://gcc.gnu.org/viewcvs?rev=243891&root=gcc&view=rev
Log:
2016-12-22 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/78239
* decl.c (char_len_param_value): Also check for -fimplicit-none
when determining if implicit none is in force.
2016-12-22 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/78239
* gfortran.dg/fimplicit_none_1.f90: New test.
* gfortran.dg/fimplicit_none_2.f90: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/gfortran.dg/fimplicit_none_1.f90
branches/gcc-6-branch/gcc/testsuite/gfortran.dg/fimplicit_none_2.f90
Modified:
branches/gcc-6-branch/gcc/fortran/ChangeLog
branches/gcc-6-branch/gcc/fortran/decl.c
branches/gcc-6-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Thu, 22 Dec 2016 17:08:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
The posted patch is just papering over the problem by changing the iteration
order of jump threads we examine. Since realization of some jump threads will
cause others to not be realized, changing the iteration order can cause
different jump threads to be realized.
As discussed PR72785, this is a kernel bug in that the kernel code assumes that
paths leading to a __builtin_object_size will not be duplicated/isolated.
>From gcc-bugs-return-548712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 17:11:56 2016
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Subject: [Bug middle-end/71474] PRED_LOOP_IV_COMPARE wrongly calculates number of iterations of a loop
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
It's resolved as we switched to C-style loops in Fortran in r238114.
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Subject: [Bug translation/78745] Truncated messages in po file
Date: Thu, 22 Dec 2016 17:15:00 -0000
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--- Comment #4 from Frederic Marchal <fmarchal at perso dot be> ---
More multi-line descriptions in gcc/config/i386/i386.opt at line 567, 577, 844.
>From gcc-bugs-return-548714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 17:29:15 2016
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #6)
> Warning on malloc with an unused return value sounds like a good idea to me
> (in fact, it seems that all allocation functions to be declared with
> warn_unused_result; i.e., all those declared with attribute alloc_size).
Good, I can do that in next stage1.
>
> I also think warning on malloc(0) can be useful. GCC 7 has -Walloc-zero
> that warns on all zero-size allocations. Unfortunately, it's not in -Wall
> or -Wextra and has to be explicitly enabled.
That's a pity, why was the option not enabled in either -Wall or -Wextra?
>
> Unconditionally turning malloc(0) into NULL wouldn't be safe since the call
> is allowed to return a unique non-null pointer and there are implementations
> (e.g., Glibc) that do return one. But doing that under an option might be
> useful on targets where the system malloc returns null (though it could
> break with superimposition).
Or when an application does not rely on result being non-null.
>
> I'm not sure that eliminating calls to malloc whose return value is unused
> is a safe optimization. Malloc can be superimposed and the replacement
> version might have important side-effects that the optimization would
> prevent.
Both clang and gcc (in 037t.cddce1) can optimize out:
int main()
{
__builtin_malloc(123);
return 0;
}
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
Date: Thu, 22 Dec 2016 17:30:00 -0000
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--- Comment #8 from rguenther at suse dot de <rguenther at suse dot de> ---
On December 22, 2016 5:36:56 PM GMT+01:00, "msebor at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78902
>
>Martin Sebor <msebor at gcc dot gnu.org> changed:
>
> What |Removed |Added
>----------------------------------------------------------------------------
> CC| |msebor at gcc dot gnu.org
>
>--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
>Warning on malloc with an unused return value sounds like a good idea
>to me (in
>fact, it seems that all allocation functions to be declared with
>warn_unused_result; i.e., all those declared with attribute
>alloc_size).
>
>I also think warning on malloc(0) can be useful. GCC 7 has
>-Walloc-zero that
>warns on all zero-size allocations. Unfortunately, it's not in -Wall
>or
>-Wextra and has to be explicitly enabled.
>
>Unconditionally turning malloc(0) into NULL wouldn't be safe since the
>call is
>allowed to return a unique non-null pointer and there are
>implementations
>(e.g., Glibc) that do return one. But doing that under an option might
>be
>useful on targets where the system malloc returns null (though it could
>break
>with superimposition).
>
>I'm not sure that eliminating calls to malloc whose return value is
>unused is a
>safe optimization. Malloc can be superimposed and the replacement
>version
>might have important side-effects that the optimization would prevent.
Given we remove malloc/free pairs it might be OK I think.
>From gcc-bugs-return-548716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 17:35:28 2016
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
Date: Thu, 22 Dec 2016 17:35:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #7)
> > I also think warning on malloc(0) can be useful. GCC 7 has -Walloc-zero
> > that warns on all zero-size allocations. Unfortunately, it's not in -Wall
> > or -Wextra and has to be explicitly enabled.
>
> That's a pity, why was the option not enabled in either -Wall or -Wextra?
I think one of the reasons was that it is a late warning, so it has similar
problems -Wnonnull had, warning even just in cases where path isolation decided
to isolate some call where it just isn't called with those arguments.
So perhaps moving it to post_ipa_warn pass would help with that part.
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Subject: [Bug libstdc++/78905] New: Add a macro to determine that the <regex> library is implemented
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
Bug ID: 78905
Summary: Add a macro to determine that the <regex> library is
implemented
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: mattyclarkson at gmail dot com
Target Milestone: ---
libstdc++ 4.7 and 4.8 shipped with a incomplete <regex> implementation.
Detecting this is a bit of a pain. I did my best to attempt a detection snippet
with:
#include <regex>
#if __cplusplus >= 201103L && \
(!defined(__GLIBCXX__) || (__cplusplus >= 201402L) || \
(defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) || \
defined(_GLIBCXX_REGEX_STATE_LIMIT)))
#define HAVE_WORKING_REGEX 1
#else
#define HAVE_WORKING_REGEX 0
#endif
This uses internal macros that are not guaranteed to exist. Would it be
possible to include a _GLIBCXX_REGEX_IMPLEMENTED (or similar) that would be
supported in future versions of the library so that the snippet can be updated
so that it doesn't break for future versions of the library?
I wrote a more lengthy description of the solution on stackoverflow:
http://stackoverflow.com/a/41186162/192993
>From gcc-bugs-return-548718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 17:42:55 2016
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Subject: [Bug libstdc++/78905] Add a macro to determine that the <regex> library is implemented
Date: Thu, 22 Dec 2016 17:42:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Why don't you use:
__GNUC__ >=5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
instead for checking GCC version?
>From gcc-bugs-return-548719-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 17:44:37 2016
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From: "mattyclarkson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/78905] Add a macro to determine that the <regex> library is implemented
Date: Thu, 22 Dec 2016 17:44:00 -0000
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--- Comment #2 from Matt Clarkson <mattyclarkson at gmail dot com> ---
Because wehen I compile with clang against the libstdc++ the problem will still
occur and __GNUC__ will not be defined. This happens on any distro where GCC is
the default but ships clang as an alternative compiler.
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 17:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78901
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
This is what creduce finally came up with:
% cat test_blast.ii
extern "C" int snprintf(char *, unsigned long, const char *...);
template <typename> struct Value;
template <typename T> struct A { typedef typename Value<T>::Type Type; };
struct B;
template <typename, typename> struct C;
template <typename T> struct C<T, int> {
typedef typename Value<T>::Type Type;
};
template <typename, typename> struct D;
template <typename TContainer, typename TSpec>
struct Value<D<TContainer, TSpec>> : Value<TContainer> {};
template <typename TContainer, typename TSpec>
typename A<D<TContainer, TSpec>>::Type operator*(D<TContainer, TSpec>);
template <typename TContainer, typename TSpec>
void operator++(D<TContainer, TSpec>);
template <typename, typename = int> struct F;
template <typename TContainer, typename TIterator, typename TSpec>
struct D<TContainer, F<TIterator, TSpec>> {};
template <typename T> struct C<T, B> {
typedef D<T, F<typename C<T, int>::Type>> Type;
};
template <typename TContainer, typename TIterator, typename TSpec>
int operator!=(D<TContainer, TIterator>, D<TContainer, TSpec>);
struct G {
char *format;
G(char *p1) : format(p1) {}
};
template <typename TTarget, typename TIValue, typename TSize>
void write(TTarget, TIValue, TSize);
template <typename TTarget, typename TValue>
void appendNumber(TTarget, TValue p2) {
char a[0];
int b = snprintf(a, sizeof(0), p2.format, 0);
write(0, 0, b);
}
template <typename TTarget, typename TValue> void write(TTarget, TValue p2) {
appendNumber(0, p2);
}
template <typename _Tp> struct H {
_Tp operator*();
void operator++();
int operator!=(H);
};
template <typename _Tp> struct I {
typedef H<_Tp> const_iterator;
const_iterator begin();
const_iterator end();
};
template <typename T> typename C<T const, B>::Type begin(T);
template <typename T> typename C<T const, B>::Type end(T);
template <typename, typename = int> struct String;
template <typename TValue, typename TSpec> struct Value<String<TValue, TSpec>>
{
typedef TValue Type;
};
template <typename TValue, typename TSpec>
struct Value<String<TValue, TSpec> const> : Value<String<TValue>> {};
template <typename, typename> struct String {};
enum BlastProgram { DYNAMIC };
template <typename, typename, typename = int, typename = int, typename = int>
struct J {};
struct K {
I<J<int, int>> matches;
} c;
enum struct BlastTabularSpec { DYNAMIC };
template <typename = int, BlastProgram = DYNAMIC,
BlastTabularSpec = BlastTabularSpec::DYNAMIC>
struct L {};
template <typename TStream, typename TScoreSpec, typename TMatch,
BlastProgram p, BlastTabularSpec h>
void _writeStatsBlock(TStream, L<TScoreSpec, p, h>, TMatch) {
write(0, G(""));
}
template <typename TStream, typename TScore, typename TQId, typename TSId,
typename TPos, typename TAlignRow0, typename TAlignRow1,
BlastProgram p, BlastTabularSpec h>
void _writeFullMatch(TStream, L<TScore, p, h> p2,
J<TAlignRow0, TAlignRow1, TPos, TQId, TSId>) {
_writeStatsBlock(0, p2, 0);
}
template <typename TStream, typename TScore, BlastProgram p, BlastTabularSpec
h>
void writeRecord(TStream, L<TScore, p, h> p2) {
for (auto m : c.matches)
_writeFullMatch(0, p2, m);
}
void writeRecord(int, K) {
L<> d;
writeRecord(0, d);
}
template <typename TFile, typename TScore, typename TRecords, BlastProgram p,
BlastTabularSpec h>
void _testBlastOutputWriteFile(TFile, L<TScore, p, h>, TRecords p3) {
for (auto r : p3)
writeRecord(0, r);
}
template <typename TFile, typename TScore, typename TFormat, BlastProgram p,
BlastTabularSpec h>
void _testBlastOutputGenerateContent(TFile, L<TScore, p, h> p2, TFormat) {
String<K> e;
_testBlastOutputWriteFile(0, p2, e);
}
template <typename TScore, typename TFormat, BlastProgram p, BlastTabularSpec
h>
void _testBlastOutput(L<TScore, p, h> p1, TFormat) {
_testBlastOutputGenerateContent(0, p1, 0);
}
void foo() try {
L<> f;
_testBlastOutput(f, 0);
} catch (int) {
}
% ~/gcc_test/usr/local/bin/g++ -w -O3 -c test_blast.ii
test_blast.ii: In function ‘void foo()’:
test_blast.ii:105:6: error: statement marked for throw in middle of block
void foo() try {
^~~
# .MEM_26 = VDEF <.MEM_23>
snprintf (&a, 4, "", 0);
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Subject: [Bug libstdc++/78905] Add a macro to determine that the <regex> library is implemented
Date: Thu, 22 Dec 2016 17:49:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Matt Clarkson from comment #2)
> Because wehen I compile with clang against the libstdc++ the problem will
> still occur and __GNUC__ will not be defined. This happens on any distro
> where GCC is the default but ships clang as an alternative compiler.
Not something which GCC supports directly. You need to ask clang folks about
that :).
Anyways 4.9.x is no longer maintained; there will be no new releases after the
current release of 4.9.4 (which happened two years after the first release of
4.9.0).
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Subject: [Bug middle-end/78904] zero-extracts are not effective
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
Ever confirmed|0 |1
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Before combine we have
===
(insn 9 7 10 2 (set (subreg:SI (reg:QI 97) 0)
(zero_extract:SI (reg/v:SI 95 [ b ])
(const_int 8 [0x8])
(const_int 8 [0x8]))) "78904.c":12 105 {*extzvsi}
(expr_list:REG_DEAD (reg/v:SI 95 [ b ])
(nil)))
(insn 10 9 11 2 (set (subreg:SI (reg:QI 98 [ a$val ]) 0)
(zero_extract:SI (reg/v:SI 94 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8]))) "78904.c":12 105 {*extzvsi}
(nil))
(insn 11 10 26 2 (parallel [
(set (reg:QI 88 [ _2 ])
(plus:QI (reg:QI 97)
(reg:QI 98 [ a$val ])))
(clobber (reg:CC 17 flags))
]) "78904.c":12 214 {*addqi_1}
(expr_list:REG_DEAD (reg:QI 98 [ a$val ])
(expr_list:REG_DEAD (reg:QI 97)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))))
(insn 13 12 14 2 (set (zero_extract:SI (reg:SI 92 [ D.1801 ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(subreg:SI (reg:QI 88 [ _2 ]) 0)) "78904.c":14 109 {insvsi_1}
(expr_list:REG_DEAD (reg:QI 88 [ _2 ])
(nil)))
===
and combine then does
===
Trying 10, 9 -> 11:
Failed to match this instruction:
(parallel [
(set (reg:QI 88 [ _2 ])
(plus:QI (subreg:QI (zero_extract:SI (reg/v:SI 94 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
(subreg:QI (zero_extract:SI (reg/v:SI 95 [ b ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)))
(clobber (reg:CC 17 flags))
])
===
and then it later tries 10, 9 -> 11 and 9, 11 -> 13 etc., but you need
11, 10, 9 -> 13 to match your insn pattern.
Maybe you want a pattern for the result of 10, 9 -> 11? It is a valid
insn for i386 I think?
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #5)
> This is what creduce finally came up with:
Thanks for the test case. The ICE goes away if the snprintf declaration is
declared throw() or attribute nothrow, or if __builtin_snprintf is used
directly.
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From: "mattyclarkson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/78905] Add a macro to determine that the <regex> library is implemented
Date: Thu, 22 Dec 2016 18:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
--- Comment #4 from Matt Clarkson <mattyclarkson at gmail dot com> ---
That's OK. I'm not particularly looking for the macro to be backported to 4.9.
Just as we move forward the new macro is available. If not it's not the end of
the world I can always maintain the snippet internally.
>From gcc-bugs-return-548725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 18:11:55 2016
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From: "ville.voutilainen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78906] New: ICE with a member variable template whose type is a decltype of a member variable template of a class template
Date: Thu, 22 Dec 2016 18:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78906
Bug ID: 78906
Summary: ICE with a member variable template whose type is a
decltype of a member variable template of a class
template
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ville.voutilainen at gmail dot com
Target Milestone: ---
template <typename> struct A { static constexpr int digits = 0; };
template <typename> struct B {
template <int, typename MaskInt = int, int = A<MaskInt>::digits>
static constexpr int XBitMask = 0;
};
struct C {
using ReferenceHost = B<int>;
template <int> static decltype(ReferenceHost::XBitMask<0>) XBitMask;
};
int main() { C::XBitMask<0>; }
prog.cc:8:62: internal compiler error: Segmentation fault
template <int> static decltype(ReferenceHost::XBitMask<0>) XBitMask;
^~~~~~~~
0xb04b0f crash_signal
/home/heads/gcc/gcc-source/gcc/toplev.c:333
0x615d7c tsubst(tree_node*, tree_node*, int, tree_node*)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:13172
0x622612 tsubst_template_args
/home/heads/gcc/gcc-source/gcc/cp/pt.c:11415
0x622ebc tsubst_aggr_type
/home/heads/gcc/gcc-source/gcc/cp/pt.c:11618
0x616399 tsubst(tree_node*, tree_node*, int, tree_node*)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:13098
0x62288b tsubst_qualified_id
/home/heads/gcc/gcc-source/gcc/cp/pt.c:13979
0x625f41 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:16550
0x61af77 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:16146
0x62039c coerce_template_parms
/home/heads/gcc/gcc-source/gcc/cp/pt.c:7801
0x620c83 finish_template_variable(tree_node*, int)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:8782
0x620dc6 lookup_and_finish_template_variable
/home/heads/gcc/gcc-source/gcc/cp/pt.c:8820
0x6229a9 tsubst_qualified_id
/home/heads/gcc/gcc-source/gcc/cp/pt.c:14046
0x625f41 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:16550
0x615e51 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:13750
0x615e51 tsubst(tree_node*, tree_node*, int, tree_node*)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:13750
0x6231fc tsubst_decl
/home/heads/gcc/gcc-source/gcc/cp/pt.c:12511
0x61656f tsubst(tree_node*, tree_node*, int, tree_node*)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:13016
0x6159cb instantiate_template_1
/home/heads/gcc/gcc-source/gcc/cp/pt.c:17811
0x6159cb instantiate_template(tree_node*, tree_node*, int)
/home/heads/gcc/gcc-source/gcc/cp/pt.c:17867
0x6c0cba finish_id_expression(tree_node*, tree_node*, tree_node*, cp_id_kind*,
bool, bool, bool*, bool, bool, bool, bool, char const**, unsigned int)
/home/heads/gcc/gcc-source/gcc/cp/semantics.c:3689
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-548726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 18:12:28 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78906] ICE with a member variable template whose type is a decltype of a member variable template of a class template
Date: Thu, 22 Dec 2016 18:12:00 -0000
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
--- Comment #1 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Clang accepts the code.
>From gcc-bugs-return-548727-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 18:13:24 2016
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78856] [6/7 Regression] wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes)
Date: Thu, 22 Dec 2016 18:13:00 -0000
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--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Mostly to record my thoughts...
Loop unrolling inserts a __builtin_unreachable as part of unrolling one of the
loops. DOM3 looks at the first 10 or so blocks determines they all have a
statically determined successor and collapses the mess down to:
;; basic block 2, loop depth 0, count 0, freq 333, maybe hot
;; prev block 0, next block 1, flags: (NEW, REACHABLE, VISITED)
;; pred: ENTRY [100.0%] (FALLTHRU,EXECUTABLE)
f[0] = 1;
f[1] = 1;
f[2] = 1;
e.3_3 = e;
b.1_1 = b;
c.2_2 = c;
_31 = c.2_2 != 0;
_15 = b.1_1 == 0 ? _31 : 0;
iftmp.0_24 = (int) _15;
_84 = 2;
_4 = 9;
_47 = 3;
_49 = 9;
_56 = 4;
_57 = 9;
_25 = 5;
_86 = 9;
__builtin_unreachable ();
;; succ:
And of course removes everything else. If I work through the CFG prior to DOM3
by hand, I get the same result -- we always pass control to the block with the
__builtin_unreachable. I really wonder if the problem is somewhere in loop
unrolling.
>From gcc-bugs-return-548728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 18:26:35 2016
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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++/78906] ICE with a member variable template whose type is a decltype of a member variable template of a class template
Date: Thu, 22 Dec 2016 18:26:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-22
CC| |jason at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
Ever confirmed|0 |1
>From gcc-bugs-return-548729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 18:31:44 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 18:31:00 -0000
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--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Here's a smaller test case:
$ cat t.C && gcc -O1 -S -Wall t.C
extern "C" int snprintf (char *, __SIZE_TYPE__, const char *, ...);
int foo ()
{
try {
return snprintf (0, 0, "");
} catch (...) { }
}
t.C: In function ‘int foo()’:
t.C:6:30: warning: zero-length gnu_printf format string [-Wformat-zero-length]
return snprintf (0, 0, "");
^
t.C:8:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
t.C:3:5: error: dead STMT in EH table
int foo ()
^~~
# .MEM_3 = VDEF <.MEM_2(D)>
_4 = snprintf (0B, 0, "");
t.C:3:5: internal compiler error: verify_gimple failed
0x1194b67 verify_gimple_in_cfg(function*, bool)
/src/gcc/git/gcc/tree-cfg.c:5266
0x1023a92 execute_function_todo
/src/gcc/git/gcc/passes.c:1965
0x1022b1d do_per_function
/src/gcc/git/gcc/passes.c:1649
0x1023c64 execute_todo
/src/gcc/git/gcc/passes.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-548730-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 18:53:58 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78899] [7 Regression] Vestorized loop with optmized mask stores motion is completely deleted after r242520.
Date: Thu, 22 Dec 2016 18:53:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #40402|0 |1
is obsolete| |
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40403
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40403&action=edit
gcc7-pr78899.patch
Updated patch. tree-ssa/pr71077.c FAILs with this patch though:
gcc.dg/tree-ssa/pr71077.c:18:5: internal compiler error: in
compute_live_loop_exits, at tree-ssa-loop-manip.c:229
0xc7d317 compute_live_loop_exits
../../gcc/tree-ssa-loop-manip.c:229
0xc7d317 add_exit_phis_var
../../gcc/tree-ssa-loop-manip.c:316
0xc7d317 add_exit_phis
../../gcc/tree-ssa-loop-manip.c:338
0xc7d317 rewrite_into_loop_closed_ssa_1(bitmap_head*, unsigned int, int, loop*)
../../gcc/tree-ssa-loop-manip.c:657
0xd8e26c vectorize_loops()
../../gcc/tree-vectorizer.c:716
Please submit a full bug report,
so more time will need to be spent on it.
>From gcc-bugs-return-548731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 19:15:48 2016
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Subject: [Bug target/71216] [4.9/5/6/7 Regression] Incorrect PPC assembly due to inserted .machine pseudo-op
Date: Thu, 22 Dec 2016 19:15:00 -0000
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--- Comment #10 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Rin Okuyama from comment #9)
> > > However, I have a question on this fix. How about the case where
> > > "-Wa,-mXXX" option is given without "-mcpu=YYY" option specified?
> >
> > That might or might not work; the user had better know what he is
> > doing if he uses an assembler option.
>
> Hmm, I understand. Is this documented explicitly anywhere?
Not in so many words I think, no.
> > GCC does not support -me500, right. You need to configure your compiler
> > for a powerpc-*-eabispe* target as far as I know (I'm no expert on this).
>
> We use -Wa,-me500 option to compile kernel on some machines. As they
> share userland with other machines, we cannot configure GCC for a
> powerpc-*-eabispe* target. Instead, I found a workaround to specify
> -mcpu=powerpc option. It passes -mppc option to assembler, but as it
> is preceding to -me500, the latter is prior to the former.
Maybe you could use -mcpu=e500mc or similar? Or, GCC should probably
have a -mcpu=e500 option, but someone has to write the code for it.
>From gcc-bugs-return-548732-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 19:21:57 2016
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Subject: [Bug fortran/78881] [F03] reading from string with DTIO procedure does not work properly
Date: Thu, 22 Dec 2016 19:21:00 -0000
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--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to janus from comment #2)
> (In reply to janus from comment #0)
> > It seems like the first character is being swallowed somewhere ...
>
> Moreover the EOF is supposed to be an EOR?
I will start looking at this. I wonder off hand if we have an EOF because we
start reading one position off. I will see what I can figure out.
>From gcc-bugs-return-548733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 19:25:14 2016
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Subject: [Bug tree-optimization/78856] [6/7 Regression] wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes)
Date: Thu, 22 Dec 2016 19:25:00 -0000
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--- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
I can't prove it yet, but I suspect this is another case where transformations
have collapsed loops and invalidated the cached iteration information.
>From gcc-bugs-return-548734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 19:31:56 2016
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 19:31:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40404
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40404&action=edit
gcc7-pr78901.patch
There are multiple issues, this patch hopefully fixes just one of them - the
case when the call might throw and is replaced by a constant that can't throw.
The other problems are:
if the call is not the NULL buffer, 0 size case, where the call is kept, just
lhs removed and lhs = cst; added after the call, then if the call might throw
(thus has to be last in the bb), inserting a stmt after it is invalid - if
(stmt_ends_bb_p (info.callstmt), then the stmt needs to be added to the
beginning of the fallthru basic block. And another problem is that while you
nicely remove lhs = snprintf (0, 0, ""); call and just set lhs = 0;, if the
user just writes useless snprintf (0, 0, ""); without lhs, then nothing removes
it at all. If the call has no lhs and is info.nowrite, then I think we can
just remove it (the case replacing it with constant will work for that too).
>From gcc-bugs-return-548735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 19:40:11 2016
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 19:40:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-548736-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 19:48:47 2016
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Subject: [Bug middle-end/78904] zero-extracts are not effective
Date: Thu, 22 Dec 2016 19:48:00 -0000
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Segher Boessenkool from comment #1)
> ===
> Trying 10, 9 -> 11:
> Failed to match this instruction:
> (parallel [
> (set (reg:QI 88 [ _2 ])
> (plus:QI (subreg:QI (zero_extract:SI (reg/v:SI 94 [ a ])
> (const_int 8 [0x8])
> (const_int 8 [0x8])) 0)
> (subreg:QI (zero_extract:SI (reg/v:SI 95 [ b ])
> (const_int 8 [0x8])
> (const_int 8 [0x8])) 0)))
> (clobber (reg:CC 17 flags))
> ])
> ===
>
> and then it later tries 10, 9 -> 11 and 9, 11 -> 13 etc., but you need
> 11, 10, 9 -> 13 to match your insn pattern.
>
> Maybe you want a pattern for the result of 10, 9 -> 11? It is a valid
> insn for i386 I think?
No, unfortunately the above is not a valid x86 insn. x86 has two-operand
instructions, so output has to match one of the operands.
It looks that combine prefers:
(subreg:SI (plus:QI
and
(subreg:QI (zero_extract:SI (... op ...)
while - according to the existing x86 patterns - in the past the patterns were
seemingly combined into:
(plus:SI
and
(zero_extract:SI (... op ...)
>From gcc-bugs-return-548737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 20:13:15 2016
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Subject: [Bug middle-end/78904] zero-extracts are not effective
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #2)
> No, unfortunately the above is not a valid x86 insn. x86 has two-operand
> instructions, so output has to match one of the operands.
But these are pseudos.
> It looks that combine prefers:
>
> (subreg:SI (plus:QI
> and
> (subreg:QI (zero_extract:SI (... op ...)
>
> while - according to the existing x86 patterns - in the past the patterns
> were seemingly combined into:
>
> (plus:SI
> and
> (zero_extract:SI (... op ...)
So when did this change?
Combine in general prefers smaller modes.
>From gcc-bugs-return-548738-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 20:28:34 2016
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Subject: [Bug fortran/78239] [5/6/7 Regression] ICE in char_len_param_value, at fortran/decl.c:926, with -fimplicit-none
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--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Thu Dec 22 20:27:52 2016
New Revision: 243895
URL: https://gcc.gnu.org/viewcvs?rev=243895&root=gcc&view=rev
Log:
2016-12-22 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/78239
* decl.c (char_len_param_value): Also check for -fimplicit-none
when determining if implicit none is in force.
2016-12-22 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/78239
* gfortran.dg/fimplicit_none_1.f90: New test.
* gfortran.dg/fimplicit_none_2.f90: New test
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/fimplicit_none_1.f90
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/fimplicit_none_2.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/decl.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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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/78239] [5/6/7 Regression] ICE in char_len_param_value, at fortran/decl.c:926, with -fimplicit-none
Date: Thu, 22 Dec 2016 20:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78239
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78906] ICE with a member variable template whose type is a decltype of a member variable template of a class template
Date: Thu, 22 Dec 2016 20:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78906
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Dec 22 20:29:07 2016
New Revision: 243897
URL: https://gcc.gnu.org/viewcvs?rev=243897&root=gcc&view=rev
Log:
PR c++/78906 - ICE with member variable template
* pt.c (finish_template_variable): Use most_general_template.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/var-templ54.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
Date: Thu, 22 Dec 2016 20:32:00 -0000
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Bug 51119 depends on bug 66189, which changed state.
Bug 66189 Summary: Block loops for inline matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66189
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
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>From gcc-bugs-return-548742-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 20:32:44 2016
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Subject: [Bug fortran/37131] inline matmul for small matrix sizes
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Bug 37131 depends on bug 66189, which changed state.
Bug 66189 Summary: Block loops for inline matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66189
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Subject: [Bug fortran/66189] Block loops for inline matmul
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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, the agreement is that we don't want to do this,
at least at the moment. Closing as WONTFIX.
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Subject: [Bug middle-end/78904] zero-extracts are not effective
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78904
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Segher Boessenkool from comment #3)
> (In reply to Uroš Bizjak from comment #2)
> > No, unfortunately the above is not a valid x86 insn. x86 has two-operand
> > instructions, so output has to match one of the operands.
>
> But these are pseudos.
Please note that
subreg:QI (zero_extract:SI (reg/v:SI 94 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
describes the high-part of a 16bit register, e.g. %ah, while
(reg:QI 88 [ _2 ])
describes low-part, e.g. %al
The pattern from the comment #1 models %al <- %ah + %bh, which is not a valid
x86 insn.
> > It looks that combine prefers:
> >
> > (subreg:SI (plus:QI
> > and
> > (subreg:QI (zero_extract:SI (... op ...)
> >
> > while - according to the existing x86 patterns - in the past the patterns
> > were seemingly combined into:
> >
> > (plus:SI
> > and
> > (zero_extract:SI (... op ...)
>
> So when did this change?
>
> Combine in general prefers smaller modes.
I don't know when, perhaps with the rewrite of extzv pattern, when mode was
added to these patterns?
Anyway, I see that some patterns, e.g. *cmpqi_ext_1 are written using
(subreg:QI (zero_extract:SI ...)), which seems consistent with your observation
in Comment #1. Following your explanation, it looks that:
(set (zero_extract:SI (reg:SI 92 [ D.1804 ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(subreg:SI (_op_:QI ...
corresponds to setting of the highpart register (%ah), and consequently arith
and logic patterns in i386.md have to be rewritten.
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78856] [6/7 Regression] wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes)
Date: Thu, 22 Dec 2016 21:17:00 -0000
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--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
So what appears to be happening is we have two loops, one natural, and an inner
irreducible loop.
We have a potential jump thread that starts on outside the outer loop and
targets a block that is in the irreducible region. In essence it's crossing
two loop boundaries. The transformations we make are all valid, but we have
that pesky cached loop iteration information which is incorrect after that
transformation.
Interestingly enough the jump threader already tries to avoid this kind of
situation (crossing multiple loop boundaries) -- but it only does so for
natural loop boundaries. After reviewing the history of that code, there's a
good chance it was also working around the cached iteration information
problem. The best solution may be to improve the detection code and properly
invalidate rather than just suppress the jump thread. Still investigating.
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Subject: [Bug middle-end/78904] zero-extracts are not effective
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--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 40405
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40405&action=edit
Prototype patch for addqi_ext_[1,2] patterns
The prototype patch compiles the testcase to:
movl %edi, %edx
movl %esi, %eax
xorw %di, %di
addb %dh, %ah
movzwl %ax, %eax
orl %edi, %eax
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Subject: [Bug tree-optimization/78496] [7 Regression] Missed opportunities for jump threading
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78496
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-22
CC| |law at redhat dot com
Ever confirmed|0 |1
--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
There's definitely a missing jump thread here. ANd we've got code that's
supposed to handle this.
>From gcc-bugs-return-548748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 21:50:30 2016
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From: "hr.jonas.hansen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78907] New: internal compiler error segmentation fault with recursive constexpr
Date: Thu, 22 Dec 2016 21:50:00 -0000
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Bug ID: 78907
Summary: internal compiler error segmentation fault with
recursive constexpr
Product: gcc
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I recently updated my g++ version to 6.3.0 (g++ (Homebrew GCC 6.3.0) 6.3.0),
but now i get the following error:
g++: internal compiler error: Segmentation fault: 11 (program cc1plus).
With the previous version (I'm not completely sure but around) 5.2 everything
worked. And on of my other computers I use g++ (Ubuntu 5.2.1-22ubuntu2) 5.2.1
and that also works.
The code is:
constexpr bool checkForPrimeNumber(const int p, const int t)
{
return p <= t or (p % t and checkForPrimeNumber(p, t + 2));
}
constexpr bool checkForPrimeNumber(const int p)
{
return p == 2 or (p & 1 and checkForPrimeNumber(p, 3));
}
int main()
{
static_assert(checkForPrimeNumber(65521), "bug...");
}
I compile the code with:
g++ test.cpp -std=c++11 -fconstexpr-depth=65535
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Subject: [Bug middle-end/78904] zero-extracts are not effective
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--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
A better testcase:
--cut here--
struct S1
{
char pad1;
unsigned char val;
short pad2;
};
struct S1 test (struct S1 a, struct S1 b)
{
a.val += b.val;
return a;
}
--cut here--
compiles with -O2 to:
movl %edi, %eax
movl %esi, %ecx
movzbl %ch, %edx
movzbl %ah, %esi
addl %esi, %edx
movb %dl, %ah
with patched compiler:
movl %edi, %eax
movl %esi, %edx
addb %ah, %dh
movl %edx, %eax
>From gcc-bugs-return-548750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 21:55:06 2016
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Actually, it seems similarly declared strlen, strchr or sprintf are all
nothrow, so there might be some bug with handling C99 builtins in C++.
>From gcc-bugs-return-548751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:02:43 2016
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Subject: [Bug c++/78907] internal compiler error segmentation fault with recursive constexpr
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Yes basically gcc is running out of stack space because of recursion. If you
do this:
> -fconstexpr-depth=65535
Increase the stack limit at the same time.
>From gcc-bugs-return-548752-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:08:58 2016
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Subject: [Bug middle-end/78904] zero-extracts are not effective
Date: Thu, 22 Dec 2016 22:08:00 -0000
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Ah, "high byte" registers are never a separate register in the i386
backend, I see.
combine would need to combine four insns to arrive at your current
pattern, but it doesn't try because it thinks they are too complex.
If I change this code to count ZERO_EXTRACT in nshift as well, combine
does try, but comes up with
(set (zero_extract:SI (reg:SI 92 [ D.1801 ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(subreg:SI (plus:QI (subreg:QI (zero_extract:SI (reg/v:SI 94 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
(subreg:QI (zero_extract:SI (reg/v:SI 95 [ b ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)) 0))
(so it does the plus as QImode).
>From gcc-bugs-return-548753-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:14:33 2016
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Subject: [Bug c++/78907] internal compiler error segmentation fault with recursive constexpr
Date: Thu, 22 Dec 2016 22:14:00 -0000
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--- Comment #2 from hr.jonas.hansen at gmail dot com ---
This is not an issue with g++ 5.2.1, did the default stack size change?
There is actually no need for using 65536 even -fconstexpr-depth=26000 will
ensure the crash, on my computer.
How do I change the stack size?
- Jonas
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 22:15:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |jason at gcc dot gnu.org
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, the C++ FE doesn't care about the nothrow attribute for the builtins, but
about cfns.gperf only. The thing is, the C99 builtins are presumably
conditional on the C++ version, for -std=c++11 and above should be nothrow and
for -std=c++98 shouldn't be. So perhaps we need 2 or 3 separate gperf lists,
one for C89, one for C99 and one for C11 functions? There are just very few
C11 functions, but many C99 ones.
>From gcc-bugs-return-548755-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:19:36 2016
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Subject: [Bug lto/78908] New: lto1: internal compiler error: in lto_read_decls, at lto/lto.c:1814
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Bug ID: 78908
Summary: lto1: internal compiler error: in lto_read_decls, at
lto/lto.c:1814
Product: gcc
Version: 6.3.0
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Created attachment 40406
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40406&action=edit
lto_read_decls_reduce_ut.ii
"lto1: internal compiler error: in lto_read_decls, at lto/lto.c:1814" linking
the attached file with gcc-6.3.0
Reproduce with:
g++-6.3.0 -std=c++14 -Wfatal-errors -w -flto=4 -fuse-linker-plugin -O2 -DNDEBUG
lto_read_decls_reduce_ut.ii -o lto_read_decls_reduce_ut.o
Output:
lto1: internal compiler error: in lto_read_decls, at lto/lto.c:1814
0xccbb85 lto_read_decls
../../gcc-6.3.0/gcc/lto/lto.c:1814
0xccbb85 lto_file_finalize(lto_file_decl_data*, lto_file*) [clone .isra.106]
../../gcc-6.3.0/gcc/lto/lto.c:2045
0xccbb85 lto_create_files_from_ids
../../gcc-6.3.0/gcc/lto/lto.c:2055
0xccbb85 lto_file_read
../../gcc-6.3.0/gcc/lto/lto.c:2096
0xccbb85 read_cgraph_and_symbols
../../gcc-6.3.0/gcc/lto/lto.c:2806
0xcc784d lto_main()
../../gcc-6.3.0/gcc/lto/lto.c:3310
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: fatal error: /home/cfrasch/local/bin/g++ returned 1 exit status
compilation terminated.
/usr/bin/ld: lto-wrapper failed
collect2: error: ld returned 1 exit status
Build configuration:
Using built-in specs.
COLLECT_GCC=/home/cfrasch/local/bin/g++
COLLECT_LTO_WRAPPER=/home/cfrasch/local/bin/../libexec/gcc/x86_64-linux-gnu/6.3.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../gcc-6.3.0/configure -v --enable-languages=c,c++
--disable-multilib --with-build-config=bootstrap-lto --program-suffix=-6.3.0
--enable-shared --without-included-gettext --enable-threads=posix --enable-nls
--enable-nls --enable-gnu-unique-object --with-system-zlib --enable-multiarch
--disable-werror --with-arch-32=i686 --with-abi=m64 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu --with-pkgversion=Thesys 6.3.0-1 ubuntu 14.04
Thread model: posix
gcc version 6.3.0 (Thesys)
Thanks
>From gcc-bugs-return-548756-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:21:48 2016
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Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Thu, 22 Dec 2016 22:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Apparently gperf allows further data to be supplied to each keyword, so we can
have just one set of keywords with 89, 99 or 11 version after it and then look
at flag_isoc{99,11}.
>From gcc-bugs-return-548757-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:22:48 2016
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From: "chris+gccbugzilla at qwirx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58114] allow turning the warning about deleting a pointer of incomplete type into an error
Date: Thu, 22 Dec 2016 22:22:00 -0000
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Chris Wilson <chris+gccbugzilla at qwirx dot com> changed:
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--- Comment #6 from Chris Wilson <chris+gccbugzilla at qwirx dot com> ---
I disagree with the assessment of this bug as a duplicate of bug 43452. That
bug was resolved by the creation of the -Wdelete-incomplete option, upon which
this bug depends. But this one requests the ability to make this warning into a
fatal error, i.e. the creation of a -Werror=delete-incomplete option, which
does not exist yet.
Please could you consider reopening this bug and marking it as not a duplicate?
>From gcc-bugs-return-548758-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:38:25 2016
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Subject: [Bug tree-optimization/78496] [7 Regression] Missed opportunities for jump threading
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
So first you need to be aware that the backwards threader does not do
simplifications nor does it know how to analyze logical operations. Adding
those capabilities to the backward threader is on the TODO list for gcc-8.
The forward walking threader does have some code to optimize stuff like this:
_549 = w1_416 <= 899;
_548 = _407 > 839;
_541 = _548 & _549;
if (_541 != 0)
Essentially it'll want to try and prove that _548 or _549 is zero, which in
turn would allow it to know that _541 is zero.
The problem is almost certainly the fact that we don't iterate the forward jump
threader.
In particular if we look at block 105 after forward jump threading:
;; basic block 105, loop depth 1, count 0, freq 3060, maybe hot
;; prev block 104, next block 106, flags: (NEW, REACHABLE, VISITED)
;; pred: 11 (FALSE_VALUE,EXECUTABLE)
;; 99 [100.0%] (FALLTHRU,EXECUTABLE)
# aa1_216 = PHI <aa1_258(11), aa1_502(99)>
# d1_206 = PHI <d1_432(11), d1_432(99)>
# v1_196 = PHI <0(11), 0(99)>
# oo1_194 = PHI <oo1_565(11), r1_254(99)>
# ss1_192 = PHI <ss1_574(11), ss1_257(99)>
# r1_190 = PHI <r1_583(11), 0(99)>
# _188 = PHI <1(11), _500(99)>
_184 = v1_196 * 3600;
_182 = (unsigned int) _184;
_180 = _182 / 60;
w1_178 = (int) _180;
_177 = w1_178 <= 449;
_176 = _180 > 389;
_169 = _176 & _177;
goto <bb 16>; [100.00%]
We would need to propagate v1_196 = 0 into the uses, which in turn result in
_180 having the value 0. That value in turn would feed into the PHI at the
start of bb16:
;; basic block 16, loop depth 1, count 0, freq 8500, maybe hot
;; Invalid sum of incoming frequencies 6375, should be 8500
;; prev block 15, next block 17, flags: (NEW, REACHABLE, VISITED)
;; pred: 15 [100.0%] (FALLTHRU,EXECUTABLE)
;; 14 [21.9%] (FALSE_VALUE,EXECUTABLE)
;; 105 [100.0%] (FALLTHRU)
# x1_197 = PHI <x1_261(15), x1_435(14), x1_435(105)>
# _407 = PHI <_16(15), _16(14), _180(105)>
# aa1_410 = PHI <aa1_185(15), aa1_185(14), aa1_216(105)>
# d1_413 = PHI <d1_191(15), d1_191(14), d1_206(105)>
# w1_416 = PHI <w1_260(15), w1_260(14), w1_178(105)>
# v1_377 = PHI <v1_558(15), v1_558(14), v1_196(105)>
# oo1_371 = PHI <oo1_567(15), oo1_567(14), oo1_194(105)>
# ss1_376 = PHI <ss1_576(15), ss1_576(14), ss1_192(105)>
# r1_609 = PHI <r1_585(15), r1_585(14), r1_190(105)>
# _612 = PHI <_596(15), _596(14), _188(105)>
_549 = w1_416 <= 899;
_548 = _407 > 839;
_541 = _548 & _549;
if (_541 != 0)
goto <bb 17>; [50.00%]
else
goto <bb 18>; [50.00%]
Once the value of _180 is propagated into the RHS of the assignment to _407
we'd be able to thread this block. But there's not another forward jump
threading pass that runs prior to PRE.
I looked at ways to introduce iteration without the full DOM pass years ago.
It was pretty obvious that the most interesting things happened as a result of
exposing degenerate PHIs. But I wasn't ever able to make a leap from that to a
low overhead iterating jump threader. What did come out of it was the phi-only
cprop pass which propagates away the degenerate PHIs.
Through the years I've become increasingly convinced that forward, equivalence
table based jump threading is the wrong model. THe right model (IMHO) is an
on-demand backwards substitution based threader.
Sebastian started that work and is what you would find in
tree-ssa-threadbackwards.c. I continue to extend that towards the long term
vision.
Essentially we want to raise the query _541 != 0 an back substitute/fold
(_548 & _549) != 0
((_407 > 839) & _549) != 0
((_180 > 839) & _540) != 0
(((_182 / 60) > 839) & _540) != 0
((((unsigned int _184) / 60) > 839) & _540) != 0
(((((unsigned int) (v1_196 * 3600))/ 60) > 839) & _540) != 0
(((((unsigned int) (0) * 3600)) / 60) > 839) & _540) != 0
At which point it simplifies to 0 != 0
We're not to that point yet, but that's the direction its going.
>From gcc-bugs-return-548759-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 22 22:47:00 2016
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Subject: [Bug middle-end/73550] Another wrong -Wmaybe-uninitialized warning in switch statement
Date: Thu, 22 Dec 2016 22:47:00 -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 #5 from Jeffrey A. Law <law at redhat dot com> ---
The additional asserts aren't going to be particularly helpful here. This is
the fundamental problem that ASSERT_EXPRs are not considered new definitions.
Thus we lose most of the information they carry at merge points.
The fact that the second switch is represented differently hurts here too.
>From gcc-bugs-return-548760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 00:38:54 2016
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Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Fri, 23 Dec 2016 00:38:00 -0000
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Yuan Pengfei <coolypf at qq dot com> changed:
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----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #10 from Yuan Pengfei <coolypf at qq dot com> ---
(In reply to Jeffrey A. Law from comment #9)
> The posted patch is just papering over the problem by changing the iteration
> order of jump threads we examine. Since realization of some jump threads
> will cause others to not be realized, changing the iteration order can cause
> different jump threads to be realized.
>
> As discussed PR72785, this is a kernel bug in that the kernel code assumes
> that paths leading to a __builtin_object_size will not be
> duplicated/isolated.
The case in PR72785 is that a non-constant b_c_p argument turns into a constant
argument, which is a kernel bug as you have discussed.
But the case here is that a constant, non-zero b_c_p argument (sector_size)
turns into a constant, maybe-zero argument. Therefore, I think this is a
compiler bug.
I don't know much about how jump threading interacts with profile
instrumentation. But keeping the original iteration order does fix this
particular bug.
>From gcc-bugs-return-548761-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 00:54:00 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Fri, 23 Dec 2016 00:54:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40407
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40407&action=edit
gcc7-pr78901-1.patch
Untested fix. With this snprintf in -std=c++11 and above will be actually
noexcept even if badly declared. But with -std=c++98 snprintf should not be
recognized as a builtin.
The gimple-ssa-sprintf.c changes will be still needed, because:
extern "C" int __snprintf_chk (char *, __SIZE_TYPE__, int, __SIZE_TYPE__, const
char *, ...);
int foo (char *c)
{
try {
return __snprintf_chk (c, 64, 0, 32, "%s", "abcdefghijklmnopq");
} catch (...) { }
}
still ICEs in -std=gnu++14 -O2 mode. That function and other *_chk ones aren't
part of C89/C99/C11 and so if they aren't properly declared noexcept or
nothrow(), we have to consider they might throw.
>From gcc-bugs-return-548762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 02:07:37 2016
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Subject: [Bug libstdc++/78905] Add a macro to determine that the <regex> library is implemented
Date: Fri, 23 Dec 2016 02:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |NEW
Last reconfirmed| |2016-12-23
Resolution|INVALID |---
Target Milestone|--- |8.0
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I asked for this to be created.
>From gcc-bugs-return-548763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 02:11:32 2016
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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++/58114] allow turning the warning about deleting a pointer of incomplete type into an error
Date: Fri, 23 Dec 2016 02:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58114
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Chris Wilson from comment #6)
> I disagree with the assessment of this bug as a duplicate of bug 43452. That
> bug was resolved by the creation of the -Wdelete-incomplete option, upon
> which this bug depends. But this one requests the ability to make this
> warning into a fatal error, i.e. the creation of a -Werror=delete-incomplete
> option, which does not exist yet.
Of course it exists. -Werror=foo is valid for any -Wfoo warning, and it's
trivial to check that it works.
>From gcc-bugs-return-548764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 02:44:40 2016
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From: "ivan.soleimanipour at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/78909] New: local variables unavailable in constructor under Oracle dbx
Date: Fri, 23 Dec 2016 02:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78909
Bug ID: 78909
Summary: local variables unavailable in constructor under
Oracle dbx
Product: gcc
Version: 6.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: ivan.soleimanipour at oracle dot com
Target Milestone: ---
Consider this code:
---------------------------------------------
#include <stdio.h>
class Widget {
public:
Widget(int i) {
int x = i;
while (!x);
}
void method(int j) {
int y = j;
while (!y);
}
int id;
};
class AnotherClass {
};
class MyClass : public AnotherClass {
public:
static void callback(Widget *b, MyClass *ptr) {
ptr->callback(b);
}
void callback(Widget *b) {
printf("callback\n");
}
};
int
main()
{
Widget *b = new Widget(4);
b->method(5);
MyClass mc;
MyClass::callback(b, &mc);
}
----------------------------------------------
Using Oracle Solaris/Developer Studio dbx if you stop in Widget() you cannot
see
'x' but if you stop in method() you can see 'y'.
There are two contributing causes:
1) See bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55541
While it has been fixed in the 5.x series it seems that constructors
still suffer from it. I.e. if you look at the dwarfdump for the above
program Widget() still has a TAG_lexical_block enclosing 'x'.
2) ... and that TAG_lexical_block is missing the attributes AT_low_pc and
AT_high_pc. Nor is there an AT_ranges. Because no extent can be
established for the lexical block dbx won't create a Scope in it's symbol
table and there's nowhere to hang 'x' off of so it gets ignored.
>From gcc-bugs-return-548765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 04:55:39 2016
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From: "williambader at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/78893] gcc-6.3.0 build fails on genattrtab on CentOS 7
Date: Fri, 23 Dec 2016 04:54:00 -0000
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--- Comment #3 from William Bader <williambader at hotmail dot com> ---
Thanks! Increasing the allocated memory fixed the problem, and the gcc build
completed. Regards, William
$ /usr/bin/free -h
total used free shared buff/cache available
Mem: 1.8G 240M 941M 28M 658M 1.3G
Swap: 1.0G 81M 943M
>From gcc-bugs-return-548766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 07:44:17 2016
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From: "coolypf at qq dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78879] -fprofile-generate causes undefined reference to `____ilog2_NaN'
Date: Fri, 23 Dec 2016 07:44:00 -0000
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--- Comment #11 from Yuan Pengfei <coolypf at qq dot com> ---
It seems that if a variable has two or more constant values, gcc does not treat
it as a constant and b_c_p returns 0. Is that correct?
If so, I might have figured out where the problem is.
With unordered_remove, the case is:
sector_size {256, 512, 1024, 2048, 4096}
|
+-----------+-----------+ ...
| {256} | {512}
b_c_p b_c_p
| |
+-----------+
| b_c_p == 1
"calculations for constant sector_size"
In "calculations for constant sector_size", sector_size has two or more
constant values, making gcc not treat it as a constant. Therefore, the call to
ilog2_NaN is not optimized away.
With ordered_remove, the case is:
sector_size {256, 512, 1024, 2048, 4096}
|
+-----------------------+ ...
| {256, 512}
b_c_p
| b_c_p == 0
"calculations for non-constant sector_size"
The call to ilog2_NaN is optimized away with "calculations for constant
sector_size".
>From gcc-bugs-return-548767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 07:49:32 2016
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/78908] [6/7 Regression] lto1: internal compiler error: in lto_read_decls, at lto/lto.c:1814
Date: Fri, 23 Dec 2016 07:49:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-23
CC| |hubicka at gcc dot gnu.org,
| |trippels at gcc dot gnu.org
Known to work| |5.4.1
Summary|lto1: internal compiler |[6/7 Regression] lto1:
|error: in lto_read_decls, |internal compiler error: in
|at lto/lto.c:1814 |lto_read_decls, at
| |lto/lto.c:1814
Ever confirmed|0 |1
Known to fail| |6.3.0, 7.0
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
markus@x4 tmp % cat lto_read_decls_reduce_ut.ii
struct A {
unsigned depth : 1;
};
template <typename> struct Writer_Endpoint;
template <unsigned long> struct B;
struct C {
struct D {
template <typename> static Writer_Endpoint<B<0>> *__test();
typedef decltype(__test<int>()) type;
};
D::type operator->();
};
enum Participant_Id { NYSE_MKT };
using participant_id = Participant_Id;
struct F {
virtual void on_inner_remove(unsigned long, A const &);
};
template <typename> struct O : F {
void on_inner_remove(unsigned long, A const &);
};
template <typename Logger> struct G {
template <typename T> void insert(T p1) { logger_->insert(p1); }
Logger *logger_;
};
template <typename Logger, typename T> void operator<<(Logger p1, T p2) {
p1.insert(p2);
}
struct H;
struct I {
H *operator->();
};
struct J {
using size_type = int;
};
template <unsigned long queue_size> struct Writer_Endpoint<B<queue_size>> : J {
template <typename, typename, typename...> void emplace();
struct K;
template <typename> size_type next_index();
};
template <unsigned long queue_size> struct Writer_Endpoint<B<queue_size>>::K {
K(Writer_Endpoint *, size_type);
};
template <unsigned long queue_size>
template <typename, typename, typename...>
void Writer_Endpoint<B<queue_size>>::emplace() {
size_type a = next_index<int>();
K(0, a);
}
struct H {
C __trans_tmp_4;
template <typename T> void insert(T const &);
decltype(__trans_tmp_4) wep_;
};
template <typename T> void H::insert(T const &) { wep_->emplace<T, int>(); }
template <typename> struct L {
template <typename T> void insert(T const &);
I backend_;
};
template <typename Tag> template <typename T> void L<Tag>::insert(T const &p1)
{
backend_->insert(p1);
}
G<L<int>> b, c;
template <typename T_ENCODER>
void O<T_ENCODER>::on_inner_remove(unsigned long, A const &p2) try {
b << p2.depth;
} catch (...) {
}
struct M;
template <class = int> struct UT_Merger;
template <> struct UT_Merger<> : O<M> {
UT_Merger() {}
};
template <unsigned long> struct N {
int const *process();
N(F p1, int, participant_id, int) : handler_(p1) {}
void process(int const &, int const &, unsigned short);
void process(int const &, A const &, unsigned short);
unsigned char expected_detail_level_;
F &handler_;
};
template <unsigned long TBookDepth> int const *N<TBookDepth>::process() {
process(0, 0, 0);
process(0, *reinterpret_cast<A *>(0), 0);
}
template <unsigned long TBookDepth>
void N<TBookDepth>::process(int const &, int const &, unsigned short) try {
c << expected_detail_level_;
} catch (...) {
}
template <unsigned long TBookDepth>
void N<TBookDepth>::process(int const &, A const &p2, unsigned short) {
handler_.on_inner_remove(0, p2);
}
void Synsip_Book_ut_channel_info_TestTestBody() {
F h;
N<0> d(h, 0, NYSE_MKT, 0);
d.process();
}
markus@x4 tmp % g++ -std=c++11 -flto -shared -fPIC -O2
lto_read_decls_reduce_ut.ii
lto_read_decls_reduce_ut.ii:98:1: error: Two symbols with same comdat_group are
not linked by the same_comdat_group list.
}
^
_ZN15Writer_EndpointI1BILm0EEE7emplaceIhiJEEEvv/37 (void
Writer_Endpoint<B<queue_size> >::emplace() [with <template-parameter-2-1> =
unsigned char:1; <template-parameter-2-2> = int; <template-parameter-2-3> = {};
long unsigned int queue_size = 0]) @0x7ffbc66efa10
Type: function definition analyzed
Visibility: public weak comdat
comdat_group:_ZN15Writer_EndpointI1BILm0EEE7emplaceIhiJEEEvv one_only
previous sharing asm name: 25
References:
Referring:
First run: 0
Function flags: body
Called by: _ZN1H6insertIhEEvRKT_/36 (1.00 per call) (can throw external)
Calls: _ZN15Writer_EndpointI1BILm0EEE1KC1EPS2_i/46 (1.00 per call) (can throw
external) _ZN15Writer_EndpointI1BILm0EEE10next_indexIiEEiv/45 (1.00 per call)
(can throw external)
_ZN15Writer_EndpointI1BILm0EEE7emplaceIhiJEEEvv/25 (void
Writer_Endpoint<B<queue_size> >::emplace() [with <template-parameter-2-1> =
unsigned char; <template-parameter-2-2> = int; <template-parameter-2-3> = {};
long unsigned int queue_size = 0]) @0x7ffbc66ef170
Type: function definition analyzed
Visibility: public weak comdat
comdat_group:_ZN15Writer_EndpointI1BILm0EEE7emplaceIhiJEEEvv one_only
next sharing asm name: 37
References:
Referring:
First run: 0
Function flags: body
Called by: _ZN1H6insertIhEEvRKT_/24 (1.00 per call) (can throw external)
Calls: _ZN15Writer_EndpointI1BILm0EEE1KC1EPS2_i/46 (1.00 per call) (can throw
external) _ZN15Writer_EndpointI1BILm0EEE10next_indexIiEEiv/45 (1.00 per call)
(can throw external)
lto_read_decls_reduce_ut.ii:98:1: internal compiler error: symtab_node::verify
failed
0x94ff61 symtab_node::verify_symtab_nodes()
/home/markus/gcc/gcc/symtab.c:1217
0x9630bf symtab_node::checking_verify_symtab_nodes()
/home/markus/gcc/gcc/cgraph.h:614
0x9630bf symbol_table::compile()
/home/markus/gcc/gcc/cgraphunit.c:2403
0x965ca6 symbol_table::compile()
/home/markus/gcc/gcc/cgraphunit.c:2587
0x965ca6 symbol_table::finalize_compilation_unit()
/home/markus/gcc/gcc/cgraphunit.c:2584
>From gcc-bugs-return-548768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 09:07:25 2016
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/78908] [6/7 Regression] lto1: internal compiler error: in lto_read_decls, at lto/lto.c:1814
Date: Fri, 23 Dec 2016 09:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78908
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org,
| |ppalka at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r231640.
>From gcc-bugs-return-548769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 09:16:12 2016
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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/59781] [5/6 Regression] [F03] Incorrect initialisation of derived type
Date: Fri, 23 Dec 2016 09:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59781
--- Comment #13 from janus at gcc dot gnu.org ---
Also the dump for comment 1 looks ok on trunk, showing the correct
initialization for the c_ptr variable:
{
void * c_ptr.1;
c_ptr.1 = 0B;
dsfmt_t.0.dsfmt_state = c_ptr.1;
}
If one can identify the commit that fixed it on trunk, it could be backported
to the release branches.
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Subject: [Bug tree-optimization/78910] [7 Regression] Wrong print-return-value for a negative number
Date: Fri, 23 Dec 2016 10:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78910
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.2.0
Target Milestone|--- |7.0
Known to fail| |7.0
>From gcc-bugs-return-548770-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 10:28:33 2016
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Subject: [Bug tree-optimization/78910] New: [7 Regression] Wrong print-return-value for a negative number
Date: Fri, 23 Dec 2016 10:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78910
Bug ID: 78910
Summary: [7 Regression] Wrong print-return-value for a negative
number
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The issue can be seen in ICU package test-suite, in section decorated:
"Get really crazy with the formatting."
$ cat /tmp/printf-test.c
int main()
{
char b[128];
int l = __builtin_sprintf (b, "%.2d", -1);
__builtin_printf ("b: '%s', length: %d\n", b, l);
if (l != 3)
__builtin_abort ();
return 0;
}
$ gcc /tmp/printf-test.c -O2 && ./a.out
b: '-01', length: 2
Aborted (core dumped)
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Subject: [Bug c/78911] New: Infinite loop while trying to compile server.c from Wine-2.0-rc2
Date: Fri, 23 Dec 2016 10:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78911
Bug ID: 78911
Summary: Infinite loop while trying to compile server.c from
Wine-2.0-rc2
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
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Priority: P3
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Created attachment 40408
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40408&action=edit
Sources
gcc -c -o server.o server.c -I. -I../../include -D__WINESRC__ -D_NTSYSTEM_
-D_REENTRANT -fPIC -Wall \
-pipe -fno-strict-aliasing -Wdeclaration-after-statement -Wempty-body
-Wignored-qualifiers \
-Wshift-overflow=2 -Wstrict-prototypes -Wtype-limits
-Wunused-but-set-parameter -Wvla \
-Wwrite-strings -Wpointer-arith -Wlogical-op -fno-omit-frame-pointer -O2
-march=pentium-m -m32 -pipe -D__i386__
gcc --version
gcc (GCC) 6.2.1 20160916 (Red Hat 6.2.1-2)
gcc -c -o server.o server.c -I. -I../../include -D__WINESRC__ -D_NTSYSTEM_
-D_REENTRANT -fPIC -Wall \
> -pipe -fno-strict-aliasing -Wdeclaration-after-statement -Wempty-body -Wignored-qualifiers \
> -Wshift-overflow=2 -Wstrict-prototypes -Wtype-limits -Wunused-but-set-parameter -Wvla \
> -Wwrite-strings -Wpointer-arith -Wlogical-op -fno-omit-frame-pointer -O2 -march=pentium-m -m32 -pipe -D__i386__ -v -save-temps
gcc: warning: -pipe ignored because -save-temps specified
Using built-in specs.
COLLECT_GCC=gcc
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--disable-libgcj --with-isl --enable-libmpx --enable-gnu-indirect-function
--with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 6.2.1 20160916 (Red Hat 6.2.1-2) (GCC)
COLLECT_GCC_OPTIONS='-c' '-o' 'server.o' '-I' '.' '-I' '../../include' '-D'
'__WINESRC__' '-D' '_NTSYSTEM_' '-D' '_REENTRANT' '-fPIC' '-Wall' '-pipe'
'-fno-strict-aliasing' '-Wdeclaration-after-statement' '-Wempty-body'
'-Wignored-qualifiers' '-Wshift-overflow=2' '-Wstrict-prototypes'
'-Wtype-limits' '-Wunused-but-set-parameter' '-Wvla' '-Wwrite-strings'
'-Wpointer-arith' '-Wlogical-op' '-fno-omit-frame-pointer' '-O2'
'-march=pentium-m' '-m32' '-pipe' '-D' '__i386__' '-v' '-save-temps'
/usr/libexec/gcc/x86_64-redhat-linux/6.2.1/cc1 -E -quiet -v -I . -I
../../include -imultilib 32 -D __WINESRC__ -D _NTSYSTEM_ -D _REENTRANT -D
__i386__ server.c -march=pentium-m -m32 -Wall -Wdeclaration-after-statement
-Wempty-body -Wignored-qualifiers -Wshift-overflow=2 -Wstrict-prototypes
-Wtype-limits -Wunused-but-set-parameter -Wvla -Wwrite-strings -Wpointer-arith
-Wlogical-op -fPIC -fno-strict-aliasing -fno-omit-frame-pointer -O2
-fpch-preprocess -o server.i
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/6.2.1/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/6.2.1/../../../../x86_64-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
.
../../include
/usr/lib/gcc/x86_64-redhat-linux/6.2.1/include
/usr/local/include
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-c' '-o' 'server.o' '-I' '.' '-I' '../../include' '-D'
'__WINESRC__' '-D' '_NTSYSTEM_' '-D' '_REENTRANT' '-fPIC' '-Wall' '-pipe'
'-fno-strict-aliasing' '-Wdeclaration-after-statement' '-Wempty-body'
'-Wignored-qualifiers' '-Wshift-overflow=2' '-Wstrict-prototypes'
'-Wtype-limits' '-Wunused-but-set-parameter' '-Wvla' '-Wwrite-strings'
'-Wpointer-arith' '-Wlogical-op' '-fno-omit-frame-pointer' '-O2'
'-march=pentium-m' '-m32' '-pipe' '-D' '__i386__' '-v' '-save-temps'
/usr/libexec/gcc/x86_64-redhat-linux/6.2.1/cc1 -fpreprocessed server.i -quiet
-dumpbase server.c -march=pentium-m -m32 -auxbase-strip server.o -O2 -Wall
-Wdeclaration-after-statement -Wempty-body -Wignored-qualifiers
-Wshift-overflow=2 -Wstrict-prototypes -Wtype-limits -Wunused-but-set-parameter
-Wvla -Wwrite-strings -Wpointer-arith -Wlogical-op -version -fPIC
-fno-strict-aliasing -fno-omit-frame-pointer -o server.s
GNU C11 (GCC) version 6.2.1 20160916 (Red Hat 6.2.1-2) (x86_64-redhat-linux)
compiled by GNU C version 6.2.1 20160916 (Red Hat 6.2.1-2), GMP version
6.1.1, MPFR version 3.1.4, MPC version 1.0.2, isl version 0.14 or 0.13
warning: MPFR header version 3.1.4 differs from library version 3.1.5.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C11 (GCC) version 6.2.1 20160916 (Red Hat 6.2.1-2) (x86_64-redhat-linux)
compiled by GNU C version 6.2.1 20160916 (Red Hat 6.2.1-2), GMP version
6.1.1, MPFR version 3.1.4, MPC version 1.0.2, isl version 0.14 or 0.13
warning: MPFR header version 3.1.4 differs from library version 3.1.5.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: cf9b61d8c1933eb6edbda3ca13701096
At this point the compiler hangs (infinite 100% CPU usage).
>From gcc-bugs-return-548773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 10:50:03 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78911] Infinite loop while trying to compile server.c from Wine-2.0-rc2
Date: Fri, 23 Dec 2016 10:50:00 -0000
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--- Comment #1 from Artem S. Tashkinov <t.artem at mailcity dot com> ---
Update:
various -march variants have no effect.
-O3 : still hangs
-Os : compiles
>From gcc-bugs-return-548774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:10:31 2016
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Subject: [Bug fortran/59781] [5/6 Regression] [F03] Incorrect initialisation of derived type
Date: Fri, 23 Dec 2016 11:10:00 -0000
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--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Also the dump for comment 1 looks ok on trunk, showing the correct
> initialization for the c_ptr variable:
>
> {
> void * c_ptr.1;
>
> c_ptr.1 = 0B;
> dsfmt_t.0.dsfmt_state = c_ptr.1;
> }
>
> If one can identify the commit that fixed it on trunk, it could be backported
> to the release branches.
AFAICT the above piece of dump appeared between revisions r241883 (2016-11-06,
none) and r241924 (2016-11-07, present), likely r241885. If I am correct, I am
not sure that the commit qualifies for back port.
>From gcc-bugs-return-548775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:17:46 2016
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Subject: [Bug fortran/59781] [5/6 Regression] [F03] Incorrect initialisation of derived type
Date: Fri, 23 Dec 2016 11:17:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vehre at gcc dot gnu.org
--- Comment #15 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #14)
> AFAICT the above piece of dump appeared between revisions r241883
> (2016-11-06, none) and r241924 (2016-11-07, present), likely r241885.
Yes, very likely. Thanks for pinpointing this, Dominique.
> If I
> am correct, I am not sure that the commit qualifies for back port.
Andre, do you think it would be reasonable to backport r241885?
>From gcc-bugs-return-548776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:28:35 2016
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Subject: [Bug middle-end/78911] [5/6/7 Regression] Infinite loop at -O2/O3 optimization levels while trying to compile server.c from Wine-2.0-rc2
Date: Fri, 23 Dec 2016 11:28:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-23
CC| |marxin at gcc dot gnu.org,
| |vmakarov at gcc dot gnu.org
Summary|Infinite loop at -O2/O3 |[5/6/7 Regression] Infinite
|optimization levels while |loop at -O2/O3 optimization
|trying to compile server.c |levels while trying to
|from Wine-2.0-rc2 |compile server.c from
| |Wine-2.0-rc2
Ever confirmed|0 |1
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r221983. I'm reducing the test-case.
>From gcc-bugs-return-548777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:30:38 2016
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Subject: [Bug middle-end/78911] [5/6/7 Regression] Infinite loop at -O2/O3 optimization levels while trying to compile server.c from Wine-2.0-rc2
Date: Fri, 23 Dec 2016 11:30:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Spins in lra:
32.64% cc1 [.] lra_create_live_ranges_1
10.52% cc1 [.] lra_assign
7.57% cc1 [.] bitmap_set_bit
Trunk works fine for me.
>From gcc-bugs-return-548778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:44:00 2016
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Subject: [Bug rtl-optimization/78911] [5/6/7 Regression] Infinite loop at -O2/O3 optimization levels while trying to compile server.c from Wine-2.0-rc2
Date: Fri, 23 Dec 2016 11:43:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
The mentioned revision is probably not probably the culprit.
Reduced test-case:
$ cat tc.i
a, b, d, e;
*c;
static interlocked_cmpxchg64 (long long *p1)
{
__sync_val_compare_and_swap (p1, b, a);
}
get_cached_fd ()
{
if (!c)
return;
e = interlocked_cmpxchg64 (&c[d]);
}
$ timeout 10 gcc -O3 -march=pentium-m -m32 -c -fPIC -Wall
-fno-strict-aliasing -fno-omit-frame-pointer tc.i
[triggers time-out]
Can you see it also on trunk?
>From gcc-bugs-return-548779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:47:00 2016
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Subject: [Bug rtl-optimization/78911] [5/6/7 Regression] Infinite loop at -O2/O3 optimization levels while trying to compile server.c from Wine-2.0-rc2
Date: Fri, 23 Dec 2016 11:46:00 -0000
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--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #4)
> Can you see it also on trunk?
Yes, but only with -O3.
>From gcc-bugs-return-548780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 11:49:17 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/78763] go1: internal compiler error: in do_get_backend, at go/gofrontend/expressions.cc:8352
Date: Fri, 23 Dec 2016 11:49:00 -0000
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Jiri Danek <jdanek at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Jiri Danek <jdanek at redhat dot com> ---
I am trying to compile qpid-proton with gcc snapshot (again in docker,
https://hub.docker.com/r/jdanekrh/nightly-gccgo-trunk-docker-image/) and as far
as I can tell, the go binding package does compile successfully. So I'd say
this bug is resolved.
What _does_ fail though is compilation of the go sample program which uses the
binding package. It is quite likely this is a bug in the build script which was
never before tested with gccgo.
FYI, the compilation error when compiling the sample program
make[2]: Entering directory '/qpid-proton/build'
/usr/bin/python /qpid-proton/proton-c/env.py --
GOPATH=/qpid-proton/proton-c/bindings/go
CGO_CFLAGS=-I/qpid-proton/proton-c/include\
-I/qpid-proton/build/proton-c/include CGO_LDFLAGS=-L/qpid-proton/build/proton-c
PN_INTEROP_DIR=/qpid-proton/tests/interop /usr/local/bin/go build -gccgoflags
-Wl,-rpath=/qpid-proton/build/proton-c -o
/qpid-proton/build/examples/go/electron/broker
/qpid-proton/examples/go/electron/broker.go
# command-line-arguments
../examples/go/electron/broker.go:30:9: error: import file '../util' not found
"../util"
^
../examples/go/electron/broker.go:69:16: error: expected package
queues util.Queues // A collection of queues.
^
../examples/go/electron/broker.go:79:8: error: expected package
q util.Queue
^
../examples/go/electron/broker.go:57:14: error: reference to undefined name
'util'
queues: util.MakeQueues(*qsize),
^
../examples/go/electron/broker.go:97:4: error: reference to undefined name
'util'
util.Debugf("Accept error: %v", err)
^
../examples/go/electron/broker.go:102:3: error: reference to undefined name
'util'
util.Debugf("Accepted %v", c)
^
../examples/go/electron/broker.go:137:3: error: reference to undefined name
'util'
util.Debugf("incoming: %v", in)
^
../examples/go/electron/broker.go:115:2: error: range clause must have array,
slice, string, map, or channel type
for in := range c.connection.Incoming() {
^
../examples/go/electron/broker.go:139:2: error: reference to undefined name
'util'
util.Debugf("incoming closed: %v", c.connection)
^
../examples/go/electron/broker.go:147:4: error: reference to undefined name
'util'
util.Debugf("%v: received %v", receiver, util.FormatMessage(rm.Message))
^
../examples/go/electron/broker.go:147:45: error: reference to undefined name
'util'
util.Debugf("%v: received %v", receiver, util.FormatMessage(rm.Message))
^
../examples/go/electron/broker.go:151:4: error: reference to undefined name
'util'
util.Debugf("%v error: %v", receiver, err)
^
../examples/go/electron/broker.go:162:4: error: reference to undefined name
'util'
util.Debugf("%v closed: %v", sender, sender.Error())
^
../examples/go/electron/broker.go:168:4: error: reference to undefined name
'util'
util.Debugf("%v: sent %v", sender, util.FormatMessage(m))
^
../examples/go/electron/broker.go:168:39: error: reference to undefined name
'util'
util.Debugf("%v: sent %v", sender, util.FormatMessage(m))
^
../examples/go/electron/broker.go:185:13: error: invalid type for make function
sentMap := make(map[sentMessage]bool)
^
../examples/go/electron/broker.go:196:4: error: argument 1 must be a map
delete(sentMap, sm)
^
../examples/go/electron/broker.go:199:5: error: reference to undefined name
'util'
util.Debugf("message %v put back, status %v, error %v",
^
../examples/go/electron/broker.go:200:6: error: reference to undefined name
'util'
util.FormatMessage(sm.m), outcome.Status, outcome.Error)
^
../examples/go/electron/broker.go:115:6: error: invalid type for range clause
for in := range c.connection.Incoming() {
^
../examples/go/electron/broker.go:167:3: error: expected channel
case m := <-q:
^
../examples/go/electron/broker.go:188:3: error: expected channel
case sm, ok := <-b.sent: // A local sender records that it has sent a
message.
^
../examples/go/electron/broker.go:194:3: error: expected channel
case outcome := <-b.acks: // The message outcome is available
^
../examples/go/electron/broker.go:167:15: error: expected channel
case m := <-q:
^
../examples/go/electron/broker.go:188:21: error: expected channel
case sm, ok := <-b.sent: // A local sender records that it has sent a
message.
^
../examples/go/electron/broker.go:194:22: error: expected channel
case outcome := <-b.acks: // The message outcome is available
^
make[2]: *** [examples/go/CMakeFiles/go_example_electron_broker] Error 2
examples/go/CMakeFiles/go_example_electron_broker.dir/build.make:57: recipe for
target 'examples/go/CMakeFiles/go_example_electron_broker' failed
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Subject: [Bug rtl-optimization/78911] [5/6/7 Regression] Infinite loop at -O2/O3 optimization levels while trying to compile server.c from Wine-2.0-rc2
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78911
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40409
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40409&action=edit
head -n700000 tc.i.274r.reload
So the problem is older than r221983.
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From: "jdanek at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/78912] New: Relative import when compiling with `go build` is not resolved
Date: Fri, 23 Dec 2016 12:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78912
Bug ID: 78912
Summary: Relative import when compiling with `go build` is not
resolved
Product: gcc
Version: 7.0
Status: UNCONFIRMED
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Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: jdanek at redhat dot com
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Created attachment 40410
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40410&action=edit
reproducer_project.zip
The attached project compiles with go tool
$ go version
go version go1.7.3 linux/amd64
$ GOPATH=`pwd` go build electron/broker.go
$ ./broker
Print from broker.go
Print from util.go
It does not compile with gccgo (I am running gcc in Docker)
$ docker run -v `pwd`:/mnt --rm -it jdanekrh/nightly-gccgo-trunk-docker-image
root@d454c37d5d3e:/# cd /mnt
root@d454c37d5d3e:/mnt# go version
go version go1.7.1 gccgo (GCC) 7.0.0 20161223 (experimental) linux/amd64
root@d454c37d5d3e:/mnt# GOPATH=`pwd` go build electron/broker.go
# command-line-arguments
electron/broker.go:4:12: error: import file '../util' not found
"../util"
^
electron/broker.go:10:5: error: reference to undefined name 'util'
util.PrintSomething()
I have tried setting the -fgo-relative-import-path option, (GOPATH=`pwd` go
build -gccgoflags -fgo-relative-import-path=`pwd`/electron electron/broker.go)
but I could not make it work that way either.
This bug may be similar to https://github.com/golang/go/issues/3759. The
reproducer from that bug compiles fine for me (relative import in that
reproducer starts ./, not ../ like in this case).
>From gcc-bugs-return-548783-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 12:42:46 2016
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Subject: [Bug go/78763] go1: internal compiler error: in do_get_backend, at go/gofrontend/expressions.cc:8352
Date: Fri, 23 Dec 2016 12:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78763
--- Comment #11 from Jiri Danek <jdanek at redhat dot com> ---
I am opening "Bug 78912 - Relative import when compiling with `go build` is not
resolved" for the relative import error.
>From gcc-bugs-return-548784-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 13:02:52 2016
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Subject: [Bug rtl-optimization/78883] [avr] ICE triggered by change to combine.c (r243578)
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--- Comment #3 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Simplified test case:
void foo (int *p)
{
int i;
for (i = 0; i < 5; i++)
{
if (p[i] & 1)
return;
}
}
$ avr-gcc -S -O1 pr78883.c
>From gcc-bugs-return-548785-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 13:05:48 2016
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Subject: [Bug lto/78908] [6/7 Regression] lto1: internal compiler error: in lto_read_decls, at lto/lto.c:1814
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--- Comment #3 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Interesting. The patch in question just delays overloaded operator call
resolution to template instantiation time as opposed to template definition
time, like what was already being done for regular function calls. It makes
the compiler more consistent by making uses of overloaded operators within
templates behave the same as explicit calls to the operatorX() functions with
respect to overload resolution. I'll try to understand this regression.
First off if I replace the uses of overloaded operators with explicit calls to
the operatorX() functions then the ICE goes away. In fact it looks like only
the use of << on line 62 needs to be kept order to trigger the ICE.
--- a/78908-orig.C
+++ b/78908.C
@@ -51,7 +51,7 @@ struct H {
template <typename T> void insert(T const &);
decltype(__trans_tmp_4) wep_;
};
-template <typename T> void H::insert(T const &) { wep_->emplace<T, int>(); }
+template <typename T> void H::insert(T const &) {
wep_.operator->()->emplace<T, int>(); }
template <typename> struct L {
template <typename T> void insert(T const &);
I backend_;
@@ -62,7 +62,7 @@ template <typename Tag> template <typename T> void
L<Tag>::insert(T const &p1) {
G<L<int>> b, c;
template <typename T_ENCODER>
void O<T_ENCODER>::on_inner_remove(unsigned long, A const &p2) try {
- b << p2.depth;
+ operator<< (b, p2.depth);
} catch (...) {
}
struct M;
@@ -84,7 +84,7 @@ template <unsigned long TBookDepth> int const
*N<TBookDepth>::process() {
}
template <unsigned long TBookDepth>
void N<TBookDepth>::process(int const &, int const &, unsigned short) try {
- c << expected_detail_level_;
+ operator<<(c, expected_detail_level_);
} catch (...) {
}
template <unsigned long TBookDepth>
>From gcc-bugs-return-548786-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 13:07:35 2016
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Subject: [Bug c/78380] GCC crash with internal compiler error: in gen_reg_rtx, at emit-rtl.c:1025
Date: Fri, 23 Dec 2016 13:07:00 -0000
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Mario Baumann <mario-baumann at web dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mario-baumann at web dot de
--- Comment #3 from Mario Baumann <mario-baumann at web dot de> ---
Created attachment 40411
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40411&action=edit
simple testcase
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Subject: [Bug c/78380] GCC crash with internal compiler error: in gen_reg_rtx, at emit-rtl.c:1025
Date: Fri, 23 Dec 2016 13:08:00 -0000
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--- Comment #4 from Mario Baumann <mario-baumann at web dot de> ---
Hi, have a similar problem with
/Gcc/6.3.0/bin/gcc -c foo.c -m32 -mfpmath=sse
> /Gcc/6.3.0/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/Gcc/6.3.0/bin/gcc
COLLECT_LTO_WRAPPER=/Gcc/6.3.0/libexec/gcc/x86_64-apple-darwin16/6.3.0/lto-wrapper
Target: x86_64-apple-darwin16
Configured with: /Build/zulu/gcc/6.3.0-src/configure --prefix=/Gcc/6.3.0
--build=x86_64-apple-darwin16 --enable-languages=c,c++,fortran --enable-lto
--enable-stage1-checking --enable-libstdcxx-time --disable-nls
--disable-libquadmath --disable-libquadmath-support --with-ld=/opt/local/bin/ld
--with-ar=/opt/local/bin/ar --with-as=/opt/local/bin/as --with-system-zlib
Thread model: posix
gcc version 6.3.0 (GCC)
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78913] New: Probably wrong -Wformat-length= error message
Date: Fri, 23 Dec 2016 13:15:00 -0000
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Bug ID: 78913
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Isolated from fcoe-utils:
$ cat /tmp/sprintf.c
struct buffer
{
char path[512];
};
int main(int argc, char **argv)
{
static struct buffer a;
struct buffer out;
__builtin_strcpy (a.path, "test");
__builtin_snprintf (out.path, sizeof (struct buffer), "%s/_\n", a.path);
__builtin_printf (out.path);
}
$ ./xgcc -B. /tmp/sprintf.c -Wall -O2 && ./a.out 1
/tmp/sprintf.c: In function ‘main’:
/tmp/sprintf.c:12:61: warning: output may be truncated before the last format
character [-Wformat-length=]
__builtin_snprintf (out.path, sizeof (struct buffer), "%s/_\n", a.path);
^~~
/tmp/sprintf.c:12:3: note: format output between 4 and 515 bytes into a
destination of size 512
__builtin_snprintf (out.path, sizeof (struct buffer), "%s/_\n", a.path);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test/_
I guess it's bogus as considering that strlen of path would be 512 is kind of
misleading.
Thanks,
Martin
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Subject: [Bug tree-optimization/78913] Probably misleading error reported by -Wformat-length
Date: Fri, 23 Dec 2016 15:57:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2016-12-23
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning in this case is based on the knowledge that the longest string that
fits into a.path is 511 characters, which given the format string of "%s/_\n"
would result in 515 characters being written in to the the 512 element array
(and characters past the 511th being truncated).
The expectation is that the call be written like so:
snprintf (out.path, sizeof (struct buffer), "%.508s/_\n", a.path);
I would at some point like to add fixit hints with this suggestion (I'm
tracking the feature request in bug 77831).
One other possibility I considered is adding a new option (distinct from
-Wformat-length) to control the snprintf truncation case. Yet another possible
"feature" is to distinguish the case when the snprintf return value is used vs
ignored (the latter likely being a bug). Though that wouldn't change anything
in this case.
Let me know your thoughts.
>From gcc-bugs-return-548790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 16:03:50 2016
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Subject: [Bug tree-optimization/78910] Wrong print-return-value for a negative number
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-23
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Thanks! Precision gives the minimum number of digits with d, which doesn't
include the sign, so printf("%.2d", -1) should produce the three bytes "-01".
>From gcc-bugs-return-548791-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 16:09:49 2016
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Subject: [Bug middle-end/77831] add fixit hints to -Wformat-length
Date: Fri, 23 Dec 2016 16:09:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-23
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=78913
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also bug 78913 for another case (similar to bug 77690).
>From gcc-bugs-return-548792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 19:12:05 2016
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Subject: [Bug fortran/59781] [5/6 Regression] [F03] Incorrect initialisation of derived type
Date: Fri, 23 Dec 2016 19:12:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jvdelisle at gcc dot gnu.org
--- Comment #16 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
If it fixes this regression, I do not see why not, unless you suspect it may
regress something else. Just mt 2 cents worth.
>From gcc-bugs-return-548793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 23:24:53 2016
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Subject: [Bug middle-end/78914] New: missing -Wnonnull for a trivial null pointer dereference
Date: Fri, 23 Dec 2016 23:24:00 -0000
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Bug ID: 78914
Summary: missing -Wnonnull for a trivial null pointer
dereference
Product: gcc
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Now that the -Wnonnull warning has been made smarter (bug 17308) it would be
nice if, in addition to calls to functions declared with attribute nonnnull, it
could also diagnose other null pointer dereferences such as the one in the test
case below. As is evident from __builtin_trap() in the dump, GCC already
"knows" that the pointer being dereferenced is null, but issuing a warning
would help catch that case earlier than at runtime.
$ cat z.c && gcc -O2 -S -Wall -Wextra -Wpedantic
-fdump-tree-optimized=/dev/stdout z.c
struct S { int i; };
int foo (struct S *s)
{
if (s)
return 6;
return s->i;
}
;; Function foo (foo, funcdef_no=0, decl_uid=1797, cgraph_uid=0,
symbol_order=0)
foo (struct S * s)
{
int _4;
<bb 2> [100.00%]:
if (s_2(D) != 0B)
goto <bb 4>; [51.18%]
else
goto <bb 3>; [48.82%]
<bb 3> [48.82%]:
_4 ={v} MEM[(struct S *)0B].i;
__builtin_trap ();
<bb 4> [100.00%]:
return 6;
}
>From gcc-bugs-return-548794-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 23:35:25 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78915] New: missing -Wuninitialized accessing allocated memory
Date: Fri, 23 Dec 2016 23:35:00 -0000
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Bug ID: 78915
Summary: missing -Wuninitialized accessing allocated memory
Product: gcc
Version: 7.0
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All three functions in the test case below read uninitialized memory but only
f0 is diagnosed with the -Wuninitialized warning. All three should be.
$ cat z.c && gcc -O2 -S -Wall -Wextra -Wpedantic z.c
int f0 (void)
{
int i;
++i;
return i;
}
int f1 (unsigned n)
{
int *p = (int*)__builtin_alloca (n);
++*p;
return *p;
}
int f2 (unsigned n)
{
int *p = (int*)__builtin_malloc (n);
if (!p)
return -1;
++*p;
return *p;
}
z.c: In function ‘f0’:
z.c:5:3: warning: ‘i’ is used uninitialized in this function [-Wuninitialized]
++i;
^~~
>From gcc-bugs-return-548795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 23 23:45:54 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78916] New: suboptimal code for x % C1 == C2
Date: Fri, 23 Dec 2016 23:45:00 -0000
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Bug ID: 78916
Summary: suboptimal code for x % C1 == C2
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
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Everything below applies to the case of unsigned operands; signed division is a
whole other matter.
When a is an odd constant, the expression x % a == 0 is equivalent to x*inv(a)
<= ~0U/a, where inv(a) is the mod-2^32 multiplicative inverse of a. More
generally, x % a == b can be rewritten as x*inv(a) - b*inv(a) <= (~0U - b)/a,
where everything but the first multiplication are compile-time constants, and
the comparison is unsigned. gcc seems to always compute the full remainder and
compare that to the RHS.
For example,
int f(unsigned x) { return x % 3 == 0; }
could compile to
20: 69 ff ab aa aa aa imul $0xaaaaaaab,%edi,%edi
26: 31 c0 xor %eax,%eax
28: 81 ff 55 55 55 55 cmp $0x55555555,%edi
2e: 0f 96 c0 setbe %al
31: c3 retq
but gcc generates
0: 89 f8 mov %edi,%eax
2: ba ab aa aa aa mov $0xaaaaaaab,%edx
7: f7 e2 mul %edx
9: d1 ea shr %edx
b: 8d 04 52 lea (%rdx,%rdx,2),%eax
e: 39 c7 cmp %eax,%edi
10: 0f 94 c0 sete %al
13: 0f b6 c0 movzbl %al,%eax
16: c3 retq
If gcc needs to compute the quotient x/a anyway, computing the remainder from
that may be optimal, but in the somewhat realistic case where the quotient is
only used if the division is exact, it's much better to compute the tentative
quotient as above and test that, e.g.
unsigned f(unsigned x);
unsigned g(unsigned x)
{
return (x % 7U == 0) ? f(x / 7U) : 0;
}
should/could be compiled as
unsigned h(unsigned x)
{
return (x * 3067833783U <= (~0U)/7) ? f(x * 3067833783U) : 0;
}
0000000000000080 <g>:
80: 89 f8 mov %edi,%eax
82: ba 25 49 92 24 mov $0x24924925,%edx
87: f7 e2 mul %edx
89: 89 f8 mov %edi,%eax
8b: 29 d0 sub %edx,%eax
8d: d1 e8 shr %eax
8f: 01 c2 add %eax,%edx
91: c1 ea 02 shr $0x2,%edx
94: 8d 04 d5 00 00 00 00 lea 0x0(,%rdx,8),%eax
9b: 29 d0 sub %edx,%eax
9d: 39 c7 cmp %eax,%edi
9f: 74 07 je a8 <g+0x28>
a1: 31 c0 xor %eax,%eax
a3: c3 retq
a4: 0f 1f 40 00 nopl 0x0(%rax)
a8: 89 d7 mov %edx,%edi
aa: e9 00 00 00 00 jmpq af <g+0x2f>
af: 90 nop
00000000000000b0 <h>:
b0: 69 ff b7 6d db b6 imul $0xb6db6db7,%edi,%edi
b6: 81 ff 24 49 92 24 cmp $0x24924924,%edi
bc: 76 0a jbe c8 <h+0x18>
be: 31 c0 xor %eax,%eax
c0: c3 retq
c1: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
c8: e9 00 00 00 00 jmpq cd <h+0x1d>
>From gcc-bugs-return-548796-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 00:02:07 2016
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Subject: [Bug middle-end/78917] New: missing -Wnonnull passing null to a nonnull function
Date: Sat, 24 Dec 2016 00:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78917
Bug ID: 78917
Summary: missing -Wnonnull passing null to a nonnull function
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
While experimenting with the enhanced -Wnonnull warning added in GCC 7.0 (bug
17308) I noticed that it fails to detect the following trivial case of passing
a null pointer to a function declared nonnull. This is different from bug
78914 where the null pointer is being dereferenced directly.
$ cat z.c && gcc -O2 -S -Wall -Wextra -Wpedantic
-fdump-tree-optimized=/dev/stdout z.c
int g (int i, int j)
{
char *p = i <= 0 ? (char*)0 : "123";
char *q = 0 != i ? (char*)0 : "4567";
char *r = i ? q : p;
return __builtin_strlen (r);
}
z.c: In function ‘g’:
z.c:1:19: warning: unused parameter ‘j’ [-Wunused-parameter]
int g (int i, int j)
^
;; Function g (g, funcdef_no=0, decl_uid=1796, cgraph_uid=0, symbol_order=0)
g (int i, int j)
{
long unsigned int _1;
int _7;
<bb 2> [100.00%]:
_1 = __builtin_strlen (0B);
_7 = (int) _1;
return _7;
}
>From gcc-bugs-return-548797-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 00:20:42 2016
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Subject: [Bug c/60256] No -Wuninitialized warning for strcpy copying to self
Date: Sat, 24 Dec 2016 00:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60256
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-24
CC| |msebor at gcc dot gnu.org
Summary|No -Wuninitialized warning |No -Wuninitialized warning
|for strcpy |for strcpy copying to self
Ever confirmed|0 |1
Known to fail| |4.9.3, 5.3.0, 6.1.0, 7.0
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
I'll confirm this on the grounds that a strcpy(s, s) call is invalid because it
violates the strict aliasing rules (strcpy arguments are declared restrict).
The invalid strcpy(s, s) call should also be diagnosed by -Wrestrict.
The test case seems contrived but I think this type of a bug can easily be
lurking in more complicated code.
>From gcc-bugs-return-548798-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 00:32:52 2016
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Subject: [Bug middle-end/78918] New: missing -Wrestrict on memcpy copying over self
Date: Sat, 24 Dec 2016 00:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78918
Bug ID: 78918
Summary: missing -Wrestrict on memcpy copying over self
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
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Calling memcpy to copy objects that overlap violates the strict aliasing rules
and is undefined. As the dump below shows, GCC eliminates some such calls
implying it "knows" the objects overlap (even though optimizing undefined code
seems questionable) but it doesn't issue any diagnostic. With the -Wrestrict
warning GCC should flag at least the basic cases.
$ cat z.c && gcc -O2 -S -Wall -Wextra -Wpedantic -Wrestrict
-fdump-tree-optimized=/dev/stdout z.c
void f (void *p, void *q, unsigned n)
{
p = q;
__builtin_memcpy (p, q, n);
}
;; Function f (f, funcdef_no=0, decl_uid=1797, cgraph_uid=0, symbol_order=0)
f (void * p, void * q, unsigned int n)
{
<bb 2> [100.00%]:
return;
}
>From gcc-bugs-return-548799-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 00:33:27 2016
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Subject: [Bug middle-end/78918] missing -Wrestrict on memcpy copying over self
Date: Sat, 24 Dec 2016 00:33:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=60256
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also bug 60256 for a similar case involving strcpy.
>From gcc-bugs-return-548800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 00:44:41 2016
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Subject: [Bug tree-optimization/78913] Probably misleading error reported by -Wformat-length
Date: Sat, 24 Dec 2016 00:44:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
I should have mentioned: the -Wformat-length pass would benefit from the
results of the strlen pass. It would also benefit from better range
information. Having the pass run later, after the VRP pass, would improve the
range information but I don't think it will help with the string length info.
To avoid the warning in this case I suspect the two passes (strlen and sprintf)
would either need to communicate (i.e., strlen would need to somehow expose the
string length data to subsequent passes similarly to how VRP does via the
get_range_info API) or be merged. It's something I'd like to look into in the
GCC 8 cycle.
>From gcc-bugs-return-548801-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 01:57:13 2016
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From: "kirit.saelensminde at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78919] New: Lambdas, default parameters and std::functional cause assembly error
Date: Sat, 24 Dec 2016 01:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78919
Bug ID: 78919
Summary: Lambdas, default parameters and std::functional cause
assembly error
Product: gcc
Version: 5.4.1
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Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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There seems to be some odd interaction with default parameters, lambdas and
std::function.
// Compile with:
// g++ --std=c++11 -Wall -Wextra bug.cpp
// g++ --std=c++14 -Wall -Wextra bug.cpp
#include <functional>
#include <iostream>
template<typename F>
void foo(F fn, std::function<void(void)> = [](){}) {
fn();
}
int main() {
foo([](){ std::cout << "First" << std::endl;});
foo([](){ std::cout << "Second" << std::endl;});
}
If the second call to `foo` is removed then it works fine. Otherwise there are
assembler errors like the below:
/tmp/ccwG9slS.s: Assembler messages:
/tmp/ccwG9slS.s:252: Error: symbol `_ZNKUlvE_clEv' is already defined
/tmp/ccwG9slS.s:537: Error: symbol
`_ZSt4moveIRUlvE_EONSt16remove_referenceIT_E4typeEOS3_' is already defined
/tmp/ccwG9slS.s:555: Error: symbol `_ZNSt8functionIFvvEEC2IUlvE_vvEET_' is
already defined
/tmp/ccwG9slS.s:813: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E21_M_not_empty_functionIS1_EEbRKT_'
is already defined
/tmp/ccwG9slS.s:830: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E15_M_init_functorERSt9_Any_dataOS1_'
is already defined
/tmp/ccwG9slS.s:871: Error: symbol
`_ZNSt17_Function_handlerIFvvEUlvE_E9_M_invokeERKSt9_Any_data' is already
defined
/tmp/ccwG9slS.s:894: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E10_M_managerERSt9_Any_dataRKS3_St18_Manager_operation'
is already defined
/tmp/ccwG9slS.s:1122: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E15_M_init_functorERSt9_Any_dataOS1_St17integral_constantIbLb1EE'
is already defined
/tmp/ccwG9slS.s:1151: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E14_M_get_pointerERKSt9_Any_data' is
already defined
/tmp/ccwG9slS.s:1176: Error: symbol
`_ZNSt9_Any_data9_M_accessIPUlvE_EERT_v' is already defined
/tmp/ccwG9slS.s:1196: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E8_M_cloneERSt9_Any_dataRKS3_St17integral_constantIbLb1EE'
is already defined
/tmp/ccwG9slS.s:1225: Error: symbol
`_ZNSt14_Function_base13_Base_managerIUlvE_E10_M_destroyERSt9_Any_dataSt17integral_constantIbLb1EE'
is already defined
/tmp/ccwG9slS.s:1306: Error: symbol
`_ZNKSt9_Any_data9_M_accessIUlvE_EERKT_v' is already defined
/tmp/ccwG9slS.s:1326: Error: symbol `_ZSt11__addressofIKUlvE_EPT_RS2_' is
already defined
/tmp/ccwG9slS.s:1344: Error: symbol `_ZNSt9_Any_data9_M_accessIUlvE_EERT_v'
is already defined
As well as 5.4.1 this bug happens in 6.2.0 and 6.2.1. We've tried this on
Ubuntu versions and Arch linux versions of the compilers.
This looks somewhat similar to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65919 but the errors appear quite
different.
>From gcc-bugs-return-548802-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 04:38:25 2016
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Subject: [Bug c++/78920] New: libstdc++ defines a macro named "major"
Date: Sat, 24 Dec 2016 04:38:00 -0000
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Bug ID: 78920
Summary: libstdc++ defines a macro named "major"
Product: gcc
Version: 6.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Here is a minimal example,
#include <iostream>
#ifdef major
#error
#endif
The example check if there's a macro named "major" defined. I observed this
recently when one of my function in my library named "major" started to break,
and the compiler error message says that "gnu_dev_major" was called with
incorrect number of arguments. This is the typical error when a function takes
the same name as a macro.
The above example will compile fine (major macro not defined) with clang 3.9.1,
g++ 4.8.5, as well as g++ 6.3.1 on macOS. However, it will emit error with g++
6.3.1 on Linux.
I saw I very old bug report #17130 about the same issue. But the system GCC
4.8.5 somehow undefined this macro while the vanilla GCC 6.3 (installed without
any special configuration options, except --prefix and --program-suffix) does
not. Are there some configuration options during installation that lead to the
behavior of the system compiler?
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Subject: [Bug c++/78920] libstdc++ defines a macro named "major"
Date: Sat, 24 Dec 2016 04:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78920
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This comes from glibc headers. G++ defines _GNU_SOURCE which is why this
happens. There is a duplicate already.
>From gcc-bugs-return-548805-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 05:10:24 2016
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Subject: [Bug libstdc++/78920] libstdc++ defines a macro named "major"
Date: Sat, 24 Dec 2016 05:10:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c++ |libstdc++
Resolution|--- |DUPLICATE
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 11196.
*** This bug has been marked as a duplicate of bug 11196 ***
>From gcc-bugs-return-548804-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 05:10:24 2016
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Subject: [Bug libstdc++/11196] _GNU_SOURCE vs. M_PI
Date: Sat, 24 Dec 2016 05:10:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zhouyan at me dot com
--- Comment #15 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 78920 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-548806-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 05:11:39 2016
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Subject: [Bug libstdc++/78920] libstdc++ defines a macro named "major"
Date: Sat, 24 Dec 2016 05:11:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Also see https://sourceware.org/ml/libc-alpha/2016-05/msg00274.html for the
libc patch which is going to remove them.
>From gcc-bugs-return-548807-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 11:16:39 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78901] [7 Regression] ICE: verify_gimple failed (error: statement marked for throw in middle of block)
Date: Sat, 24 Dec 2016 11:16:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Dec 24 11:15:44 2016
New Revision: 243914
URL: https://gcc.gnu.org/viewcvs?rev=243914&root=gcc&view=rev
Log:
PR middle-end/78901
* except.c (nothrow_libfn_p): Expect libc_name_p to return
const struct libc_name_struct *, if it returns NULL, return 0,
otherwise check c_ver and use flag_isoc99 or flag_isoc11.
* cfns.gperf: Add %struct-type and libc_name_struct definition.
For all C89 C library functions add , 89 after the name, add
C99 C library functions with , 99 and C11 C library functions
with , 11 suffix.
* cfns.h: Regenerated.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cfns.gperf
trunk/gcc/cp/cfns.h
trunk/gcc/cp/except.c
>From gcc-bugs-return-548808-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 14:33:52 2016
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From: "linux at carewolf dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78921] New: SSE/AVX shuffle intrinsics uses builtins instead of __builtin_shuffle
Date: Sat, 24 Dec 2016 14:33:00 -0000
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Bug ID: 78921
Summary: SSE/AVX shuffle intrinsics uses builtins instead of
__builtin_shuffle
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The intrinsics for x86 SIMD shuffle instructions could be redeclared using
__builtin_shuffle. This would help folding and better instruction selection.
This has already been suggested on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29756 and is also a necessary
component of solving one part of
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78563 .
>From gcc-bugs-return-548809-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 15:25:24 2016
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From: "fmarchal at perso dot be" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78922] New: Comment submitted for translation in stringop.opt
Date: Sat, 24 Dec 2016 15:25:00 -0000
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Bug ID: 78922
Summary: Comment submitted for translation in stringop.opt
Product: gcc
Version: 6.2.0
Status: UNCONFIRMED
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The generated gcc/po/gcc.pot file contains the three following messages:
#: config/i386/stringop.opt:8
msgid "the Free Software Foundation; either version 3, or (at your option)"
msgstr ""
#: config/i386/stringop.opt:13
msgid "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the"
msgstr ""
#: config/i386/stringop.opt:18
msgid "see <http://www.gnu.org/licenses/>. */"
msgstr ""
These messages are coming from the copyright header in
gcc/config/i386/stringop.opt. They must not appear in gcc.pot as they do not
correspond to messages to be translated.
>From gcc-bugs-return-548810-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 16:21:01 2016
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From: "drepper.fsp+rhbz at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78923] New: bad error message about missing template argument
Date: Sat, 24 Dec 2016 16:21:00 -0000
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Bug ID: 78923
Summary: bad error message about missing template argument
Product: gcc
Version: 6.2.1
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Here is another case where the error message emitted by gcc (albeit, 6.2.1, I
don't have a more recent version handy):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
template<typename T>
struct A;
template<typename T>
struct B {
B(A<T>*);
};
template<typename T>
B<T>::B(A*) { // <-- should be: B<T>::B(A<T>*) {
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Notice the missing template argument. The error message emitted is:
u.cc:10:8: error: expected constructor, destructor, or type conversion before
‘(’ token
B<T>::B(A*) {
^
In comparison, clang++ emits:
u.cc:10:9: error: use of class template 'A' requires template arguments
B<T>::B(A*) {
^
u.cc:2:8: note: template is declared here
struct A;
^
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Subject: [Bug c++/78924] New: hiding of template parameter of member template
Date: Sat, 24 Dec 2016 19:30:00 -0000
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Bug ID: 78924
Summary: hiding of template parameter of member template
Product: gcc
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Target Milestone: ---
due to http://eel.is/c++draft/temp.res#temp.local-7 :
"In the definition of a member of a class template that appears outside of the
class template definition, the name of a member of the class template hides the
name of a template-parameter of any enclosing class templates (but not a
template-parameter of the member if the member is a class or function
template). [ Example:
template<class T> struct A {
struct B { /* ... */ };
typedef void C;
void f();
template<class U> void g(U);
};
template<class B> void A<B>::f() {
B b; // A's B, not the template parameter
}
template<class B> template<class C> void A<B>::g(C) {
B b; // A's B, not the template parameter
C c; // the template parameter C, not A's C
}
— end example ]"
when i'm trying to compile the example, following errors occurs :
"template-bug-report.cxx:34:42: error: prototype for ‘void A<T>::g()’ does not
match any in class ‘A<T>’
template-bug-report.cxx:27:26: error: candidate is: template<class T>
template<class U> void A<T>::g(U)"
(compiler treats C in A<B>::g(C) as A's member name)
>From gcc-bugs-return-548812-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 24 19:42:59 2016
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Subject: [Bug c++/78924] hiding of template parameter of member template
Date: Sat, 24 Dec 2016 19:42:00 -0000
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--- Comment #1 from litteras at ukr dot net ---
http://stackoverflow.com/questions/41313565/hiding-of-template-parameter-of-member-template
>From gcc-bugs-return-548813-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 01:40:50 2016
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From: "bluescarni at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78925] New: Inline friend template function not hidden during ADL
Date: Sun, 25 Dec 2016 01:40:00 -0000
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Bug ID: 78925
Summary: Inline friend template function not hidden during ADL
Product: gcc
Version: 7.0
Status: UNCONFIRMED
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Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Consider the code:
--------------
namespace ns
{
template <typename T>
struct foo
{
template <typename U>
friend void bar(U) {}
};
}
int main()
{
ns::foo<int> f_int;
bar(f_int);
ns::foo<double> f_double;
bar(f_double);
}
--------------
Clang compiles this code without complaining, but every GCC version I have
tried (namely, 5.4.0 and the current trunk) fails, complaining about the
redefinition of ns::bar(). What seems to happen here is that during the lookup
for the second bar() call, the instantiation of bar() triggered by the first
call is considered via ADL, thus leading to two identical overloads being
present at the same time in the candidate set.
>From gcc-bugs-return-548814-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 01:42:52 2016
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Subject: [Bug c++/78925] Inline friend template function not hidden during ADL
Date: Sun, 25 Dec 2016 01:42:00 -0000
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--- Comment #1 from Francesco Biscani <bluescarni at gmail dot com> ---
Commenting either call to bar() leads to successful compilation.
>From gcc-bugs-return-548815-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 14:00:53 2016
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Subject: [Bug fortran/78881] [F03] reading from string with DTIO procedure does not work properly
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-25
Ever confirmed|0 |1
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-548816-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 14:44:32 2016
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Subject: [Bug c++/78926] New: Build fails after update to GCC 6.3
Date: Sun, 25 Dec 2016 14:44:00 -0000
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Bug ID: 78926
Summary: Build fails after update to GCC 6.3
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Updated GCC 6.2 -> 6.3 and now see following build error:
$ g++ -std=c++14 -pthread -c -MMD -pedantic-errors -Isrc/main
-I/usr/local/ssl/include -DASIO_STANDALONE -DASIO_SEPARATE_COMPILATION
-DASIO_NO_DEPRECATED -DHTTP_PARSER_STRICT=0 -g -Og -Wall -Wno-switch
-Wno-parentheses -o src/main/migration/session.o src/main/migration/session.cpp
$ g++ -std=c++14 -pthread -o flexify-engine -Llib -static-libgcc
-static-libstdc++ <files.o> -lssl -lcrypto -lexpat -ldl
b_print.c: In function ‘_dopr’:
b_print.c:169:1: error: SSE register return with SSE disabled
b_print.c:338:28: error: SSE register argument with SSE disabled
lto-wrapper: fatal error: g++ returned 1 exit status
compilation terminated.
/opt/binutils/bin/ld: fatal error: lto-wrapper failed
collect2: error: ld returned 1 exit status
OpenSSL library (static) built with previous version - GCC 6.2.
>From gcc-bugs-return-548817-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 14:46:51 2016
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Subject: [Bug c++/78926] Build fails after update to GCC 6.3
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__vic <d.v.a at ngs dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.2.0
Host| |linux-x64
Known to fail| |6.3.0
--- Comment #1 from __vic <d.v.a at ngs dot ru> ---
Why I see messages about lto-wrapper if LTO isn't used? It's debug build w/o
LTO.
>From gcc-bugs-return-548818-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 14:47:39 2016
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Subject: [Bug target/78926] Build fails after update to GCC 6.3
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
How are the other objects built?
>From gcc-bugs-return-548820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 15:09:45 2016
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Subject: [Bug target/78926] Build fails after update to GCC 6.3
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I mean the openssl libraries.
>From gcc-bugs-return-548819-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Dec 25 15:09:00 2016
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--- Comment #3 from __vic <d.v.a at ngs dot ru> ---
See the first $. Or you mean openssl objects?
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--- Comment #5 from __vic <d.v.a at ngs dot ru> ---
$ gcc -flto -ffunction-sections -fdata-sections -I. -I.. -I../include
-DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -Wa,--noexecstack
-m64 -DL_ENDIAN -O3 -Wall -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT
-DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DRC4_ASM -DSHA1_ASM -DSHA256_ASM
-DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM
-DGHASH_ASM -DECP_NISTZ256_ASM -c -o uid.o uid.c
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to __vic from comment #1)
> Why I see messages about lto-wrapper if LTO isn't used? It's debug build w/o
> LTO.
Because openssl is compiled with lto. Maybe something is wrong in the way
openssl is compiled.
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--- Comment #7 from __vic <d.v.a at ngs dot ru> ---
But it works with 6.2
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--- Comment #8 from __vic <d.v.a at ngs dot ru> ---
OpenSSL v 1.0.2j
$ env CC="gcc -flto -ffunction-sections -fdata-sections" AR=gcc-ar
RANLIB=gcc-ranlib ./config threads no-shared
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--- Comment #9 from __vic <d.v.a at ngs dot ru> ---
$ ld --version
GNU gold (GNU Binutils 2.27) 1.12
Built from sources. Both gold and BFD produce the same result
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Subject: [Bug c/78927] New: implicit-fallthrough is very picky about FALLTHROUGH comment location
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Bug ID: 78927
Summary: implicit-fallthrough is very picky about FALLTHROUGH
comment location
Product: gcc
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This is the (currently latest) 20161218 snapshot.
int main() {
int num = 3;
int a;
switch (num) {
case 1:
{
a = 3;
/* FALLTHROUGH */
}
case 2:
{
a = 2;
break;
}
default:
a = 3;
}
return 0;
}
% /home/pkg2/pkg/gcc7snapshot/bin/gcc -Werror=implicit-fallthrough test16.c
test16.c: In function ‘main’:
test16.c:7:6: error: this statement may fall through
[-Werror=implicit-fallthrough=]
a = 3;
~~^~~
test16.c:10:3: note: here
case 2:
^~~~
cc1: some warnings being treated as errors
% /home/pkg2/pkg/gcc7snapshot/bin/gcc --version
gcc (GCC) 7.0.0 20161218 (experimental)
Copyright (C) 2016 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.
There are some more warnings I get while compiling netbsd's kernel regarding
FALLTHRU location, but perhaps more "controversial" than this.
Moving the FALLTHROUGH comment one line below works.
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Yes, the issue is known already. But unfortunately it is not fixable.
You must use the [[gnu::fallthrough]] attribute in this case.
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--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Is openssl compiled with 6.2 while the program is compiled with 6.3?
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78928
Bug ID: 78928
Summary: void(*); accepted in block scope
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rs2740 at gmail dot com
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From http://stackoverflow.com/q/41326047/2756719.
GCC accepts this plainly invalid code:
void f() {
void(*);
}
It appears that any combination of ptr-operators within the parentheses is
accepted as well.
>From gcc-bugs-return-548830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 06:47:13 2016
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Subject: [Bug c++/78929] New: Incorrect implementation of Refining Expression Evaluation Order for Idiomatic C++
Date: Mon, 26 Dec 2016 06:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78929
Bug ID: 78929
Summary: Incorrect implementation of Refining Expression
Evaluation Order for Idiomatic C++
Product: gcc
Version: 7.0
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Priority: P3
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GCC 7 claims to support Refining Expression Evaluation Order for Idiomatic C++,
proposed by P0145R3.
https://gcc.gnu.org/projects/cxx-status.html#cxx1z
Current GCC 7 head does incorrect evaluation on this code.
#include <iostream>
int main()
{
int i = 0 ;
std::cout << ++i + ++i ;
}
The output should be 3 but current GCC 7 head output 4.
>From gcc-bugs-return-548831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 06:58:12 2016
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Subject: [Bug c++/78929] Incorrect implementation of Refining Expression Evaluation Order for Idiomatic C++
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Hmm.
I don't think this is still defined according to that paper.
* Postfix expressions are evaluated from left to right. This includes functions
calls and member selection expressions.
* Assignment expressions are evaluated from right to left. This includes
compound assignments.
* Operands to shift operators are evaluated from left to right.
No where included here is binary operator like +.
That is: "++i + ++i" is still undefined as + is not included in the above list.
>From gcc-bugs-return-548832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 07:25:45 2016
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Subject: [Bug target/78926] Build fails after update to GCC 6.3
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--- Comment #11 from __vic <d.v.a at ngs dot ru> ---
Yes. As it is said in Comment 0:
> OpenSSL library (static) built with previous version - GCC 6.2.
>From gcc-bugs-return-548833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 07:45:38 2016
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--- Comment #12 from __vic <d.v.a at ngs dot ru> ---
Actually it can be 6.1 as well. Don't remember exactly.
>From gcc-bugs-return-548834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 07:53:55 2016
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Subject: [Bug target/78926] Build fails after update to GCC 6.3
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--- Comment #13 from __vic <d.v.a at ngs dot ru> ---
Rebuilt openssl with 6.3, the problem has gone.
What was that? Bug in the previous version or in the new one?
>From gcc-bugs-return-548835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 08:18:56 2016
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Subject: [Bug libstdc++/60936] [5/6/7 Regression] Binary code bloat with std::string
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--- Comment #23 from __vic <d.v.a at ngs dot ru> ---
Jonathan, have you tried to merge you patch with mine? Yours lacks decoupling
of string and iostream in c++11/cow-string-inst.o. I think it's a reason why
code size was unaffected
>From gcc-bugs-return-548836-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 10:08:30 2016
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Subject: [Bug c++/78929] Incorrect implementation of Refining Expression Evaluation Order for Idiomatic C++
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--- Comment #2 from Ryou Ezoe <boostcpp at gmail dot com> ---
My bad.
§1.10 p18 still said "i++ + i" is undefined.
>From gcc-bugs-return-548837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 10:17:35 2016
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Subject: [Bug c++/78929] Incorrect implementation of Refining Expression Evaluation Order for Idiomatic C++
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Closing as invalid.
>From gcc-bugs-return-548838-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 10:20:55 2016
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Subject: [Bug c++/78929] Incorrect implementation of Refining Expression Evaluation Order for Idiomatic C++
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Subject: [Bug fortran/52473] CSHIFT slow - inline it?
Date: Mon, 26 Dec 2016 12:25:00 -0000
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Looking at the code, inlining cshift for a constant shift
could already be a good idea.
So, change
b = cshift(b,1) + cshift(b,-1)
to
a = b
b(1) = a(2) + a(n)
b(2:n-1) = a(1:n-2) + a(3:n)
b(n) = a(1) + a(n-1)
>From gcc-bugs-return-548840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 13:23:34 2016
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Subject: [Bug middle-end/63994] Ada bootstrap fails with -fcheck-pointer-bounds -mmpx
Date: Mon, 26 Dec 2016 13:23:00 -0000
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Alexander Ivchenko <aivchenk at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aivchenk at gmail dot com
--- Comment #8 from Alexander Ivchenko <aivchenk at gmail dot com> ---
I couldn't reproduce the issue as of Dec 26 trunk. I suppose it can be closed
>From gcc-bugs-return-548841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 15:00:37 2016
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From: "niva at niisi dot msk.ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/78860] ICE in compilation for MIPS with -mpaired-single
Date: Mon, 26 Dec 2016 15:00:00 -0000
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niva at niisi dot msk.ru changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |6.3.0
--- Comment #2 from niva at niisi dot msk.ru ---
The error was reproduced also with mips64-none-elf-gcc-6.3.0
>From gcc-bugs-return-548842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 15:22:48 2016
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Subject: [Bug other/67520] libmpx should abort() instead of exit(255) on bound violation detection
Date: Mon, 26 Dec 2016 15:22:00 -0000
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Alexander Ivchenko <aivchenk at gmail dot com> changed:
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--- Comment #2 from Alexander Ivchenko <aivchenk at gmail dot com> ---
(In reply to Richard Biener from comment #1)
> IMHO libraries should have a way to specify a custom handler (and default
> that to abort maybe). Indeed exit (255) isn't very canonical.
Addressed in:
------------------------------------------------------------------------
r243928 | aivchenk | 2016-12-26 18:14:06 +0300 (Mon, 26 Dec 2016) | 14 lines
2016-12-26 Alexander Ivchenko <alexander.ivchenko@intel.com>
* mpxrt/libtool-version: New version.
* mpxrt/mpxrt-utils.c (set_mpx_rt_stop_handler): New function.
(print_help): Add help for CHKP_RT_STOP_HANDLER environment
variable.
(__mpxrt_init_env_vars): Add initialization of stop_handler.
(__mpxrt_stop_handler): New function.
(__mpxrt_stop): Ditto.
* mpxrt/mpxrt-utils.h (mpx_rt_stop_mode_handler_t): New enum.
* mpxrt/mpxrt.c (handler): Replace exit(255) with __mpxrt_stop
function call.
Now libmpx will call abort on bounds violations by default (User can restore
previous behavior with CHKP_RT_STOP_HANDLER env variable)
>From gcc-bugs-return-548843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 19:01:39 2016
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Subject: [Bug middle-end/78904] zero-extracts are not effective
Date: Mon, 26 Dec 2016 19:01:00 -0000
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--- Comment #8 from uros at gcc dot gnu.org ---
Author: uros
Date: Mon Dec 26 19:00:47 2016
New Revision: 243929
URL: https://gcc.gnu.org/viewcvs?rev=243929&root=gcc&view=rev
Log:
PR target/78904
* config/i386/i386.md (addqi_ext_1): Canonicalize insn pattern w.r.t.
zero_extract RTXes.
(*addqi_ext_2): Ditto.
(testqi_ext_ccno_0): Canonicalize expander w.r.t. zero_extract RTXes.
(testqi_ext_1_ccno): Rename from testqi_ext_ccno_0.
(*testqi_ext_0): Merge with *testqi_ext_1.
(*testqi_ext_1): Canonicalize insn pattern w.r.t. zero_extract RTXes.
Update corresponding splitter.
(*testqi_ext_2): Canonicalize insn pattern w.r.t. zero_extract RTXes.
(*andqi_ext_0): Merge with *andqi_ext_1.
(andqi_ext_1): Canonicalize insn pattern w.r.t. zero_extract RTXes.
Rename from *andqi_ext_1. Update corresponding splitter and
peephole2 patterns.
(*andqi_ext_1_cc): Rename from *andqi_ext_0_cc.
(*andqi_ext_2): Canonicalize insn pattern w.r.t. zero_extract RTXes.
(*<any_or:code>qi_ext_0): Merge with *andqi_ext_1.
(*<any_or:code>qi_ext_1): Canonicalize insn pattern w.r.t.
zero_extract RTXes. Update corresponding splitter.
(*<any_or:code>qi_ext_2): Canonicalize insn pattern w.r.t.
zero_extract RTXes.
(xorqi_cc_ext_1): Canonicalize expander w.r.t. zero_extract RTXes.
(xorqi_ext_1_cc): Rename from xorqi_cc_ext_1.
(*xorqi_cc_ext_1): Canonicalize insn pattern w.r.t. zero_extract RTXes.
Update corresponding splitter.
(*xorqi_ext_1_cc): Rename from *xorqi_cc_ext_1.
(isinfxf2): Update calls to renamed expanders.
(isinf<mode>2): Ditto.
* config/i386/i386.c (ix86_expand_fp_compare): Ditto.
(ix86_emit_fp_unordered_jump): Ditto.
(ix86_emit_i387_round): Ditto.
testsuite/ChangeLog:
PR target/78904
* gcc.target/i386/pr78904.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr78904.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 19:08:22 2016
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Subject: [Bug target/78904] zero-extracts are not effective
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Component|middle-end |target
Resolution|--- |FIXED
Target Milestone|--- |7.0
--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
Target issue, fixed by rewriting relevant patterns to the canonical form.
>From gcc-bugs-return-548845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 26 19:08:54 2016
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Subject: [Bug target/78904] zero-extracts are not effective
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
>From gcc-bugs-return-548846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 07:25:06 2016
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Subject: [Bug tree-optimization/78930] New: Chromium failed compilation with -finline-functions or -O3
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Bug ID: 78930
Summary: Chromium failed compilation with -finline-functions or
-O3
Product: gcc
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Created attachment 40412
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40412&action=edit
environment
Part of log:
[23851/23852] touch obj/chrome/browser_dependencies.stamp
[23852/23852] x86_64-pc-linux-gnu-g++ -pie -fPIC -Wl,-z,noexecstack -Wl,-z,now
-Wl,-z,relro -Wl,-z,defs -Wl,--no-as-needed -lpthread -Wl,--as-needed -pthread
-m64 -Wl,-O1 -Wl,--gc-sections -Wl,-rpath-link=. -Wl,--disable-new-dtags
-Wl,--export-dynamic -Wl,-O1 -Wl,--as-needed -o "./chrome" -Wl,--start-group
@"./chrome.rsp" -Wl,--end-group -ldl -lrt -lpangocairo-1.0 -lpango-1.0
-lgobject-2.0 -lglib-2.0 -lcairo -lX11 -lX11-xcb -lxcb -lXcomposite -lXcursor
-lXdamage -lXext -lXfixes -lXi -lXrender -lXtst -lgmodule-2.0 -lgthread-2.0
-licui18n -licuuc -licudata -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4
-lexpat -lxml2 -lfontconfig -ldbus-1 -latomic -lgconf-2 -lresolv -lgio-2.0 -lz
-lharfbuzz-icu -lharfbuzz -lpng16 -lfreetype -ljpeg -lXss -lre2 -lXrandr
-lavcodec -lavformat -lavutil -lvpx -lm -lasound -latk-1.0 -lminizip -lsnappy
-lFLAC -lgtk-3 -lgdk-3 -lcairo-gobject -lgdk_pixbuf-2.0 -lwebp -lwebpdemux
-lxslt
FAILED: chrome
x86_64-pc-linux-gnu-g++ -pie -fPIC -Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro
-Wl,-z,defs -Wl,--no-as-needed -lpthread -Wl,--as-needed -pthread -m64 -Wl,-O1
-Wl,--gc-sections -Wl,-rpath-link=. -Wl,--disable-new-dtags
-Wl,--export-dynamic -Wl,-O1 -Wl,--as-needed -o "./chrome" -Wl,--start-group
@"./chrome.rsp" -Wl,--end-group -ldl -lrt -lpangocairo-1.0 -lpango-1.0
-lgobject-2.0 -lglib-2.0 -lcairo -lX11 -lX11-xcb -lxcb -lXcomposite -lXcursor
-lXdamage -lXext -lXfixes -lXi -lXrender -lXtst -lgmodule-2.0 -lgthread-2.0
-licui18n -licuuc -licudata -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4
-lexpat -lxml2 -lfontconfig -ldbus-1 -latomic -lgconf-2 -lresolv -lgio-2.0 -lz
-lharfbuzz-icu -lharfbuzz -lpng16 -lfreetype -ljpeg -lXss -lre2 -lXrandr
-lavcodec -lavformat -lavutil -lvpx -lm -lasound -latk-1.0 -lminizip -lsnappy
-lFLAC -lgtk-3 -lgdk-3 -lcairo-gobject -lgdk_pixbuf-2.0 -lwebp -lwebpdemux
-lxslt
obj/third_party/WebKit/Source/core/css/libcss_4.a(CSSToStyleMap.o): In function
`blink::CSSToStyleMap::mapFillXPosition(blink::StyleResolverState&,
blink::FillLayer*, blink::CSSValue const&)':
CSSToStyleMap.cpp:(.text._ZN5blink13CSSToStyleMap16mapFillXPositionERNS_18StyleResolverStateEPNS_9FillLayerERKNS_8CSSValueE+0x65):
undefined reference to `blink::Length
blink::StyleBuilderConverter::convertPositionLength<(blink::CSSValueID)169,
(blink::CSSValueID)170>(blink::StyleResolverState&, blink::CSSValue const&)'
obj/third_party/WebKit/Source/core/css/libcss_4.a(CSSToStyleMap.o): In function
`blink::CSSToStyleMap::mapFillYPosition(blink::StyleResolverState&,
blink::FillLayer*, blink::CSSValue const&)':
CSSToStyleMap.cpp:(.text._ZN5blink13CSSToStyleMap16mapFillYPositionERNS_18StyleResolverStateEPNS_9FillLayerERKNS_8CSSValueE+0x65):
undefined reference to `blink::Length
blink::StyleBuilderConverter::convertPositionLength<(blink::CSSValueID)165,
(blink::CSSValueID)166>(blink::StyleResolverState&, blink::CSSValue const&)'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
* ERROR: www-client/chromium-56.0.2924.21::gentoo failed (compile phase):
* (no error message)
*
* Call stack:
* ebuild.sh, line 115: Called src_compile
* environment, line 5224: Called die
* The specific snippet of code:
* eninja -C out/Release ${ninja_targets} || die;
*
* If you need support, post the output of `emerge --info
'=www-client/chromium-56.0.2924.21::gentoo'`,
* the complete build log and the output of `emerge -pqv
'=www-client/chromium-56.0.2924.21::gentoo'`.
*
* You have enabled the custom-cflags USE flag.
* Please disable it before reporting a bug.
*
*
* MemTotal: 7610284 kB
* SwapTotal: 0 kB
Full build log (55mb): https://yadi.sk/d/GdI8O6ls34c5Qt
>From gcc-bugs-return-548847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 07:44:23 2016
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78930] Chromium failed compilation with -finline-functions or -O3
Date: Tue, 27 Dec 2016 07:44:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |trippels at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Not a gcc bug.
You can use the patch in
https://bugs.chromium.org/p/chromium/issues/detail?id=593980 or version 57,
where the issue was fixed finally.
>From gcc-bugs-return-548848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 08:59:55 2016
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Subject: [Bug target/78904] zero-extracts are not effective
Date: Tue, 27 Dec 2016 08:59:00 -0000
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--- Comment #11 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue Dec 27 08:59:04 2016
New Revision: 243933
URL: https://gcc.gnu.org/viewcvs?rev=243933&root=gcc&view=rev
Log:
PR target/78904
* config/i386/i386.md (*cmpqi_ext_1, *extvqi, *extzvqi): Use
nonimmediate_operand instead of nonimmediate_x64nomem_operand.
(*cmpqi_ext_3, insv<mode>_1, addqi_ext_1, *testqi_ext_1, andqi_ext_1)
(*<any_or:code>qi_ext_1, *xorqi_ext_1_cc): Use general_operand
instead of general_x64nomem_operand.
* config/i386/predicates.md (nonimmediate_x64nomem_operand): Remove.
(general_x64nomem_operand): Ditto.
testsuite/ChangeLog:
PR target/78904
* gcc.target/i386/pr78904-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr78904-1.c
- copied unchanged from r243932,
trunk/gcc/testsuite/gcc.target/i386/pr78904.c
trunk/gcc/testsuite/gcc.target/i386/pr78904-2.c
Removed:
trunk/gcc/testsuite/gcc.target/i386/pr78904.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/config/i386/predicates.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 09:27:43 2016
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Subject: [Bug c++/78923] bad error message about missing template argument
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-27
CC| |marxin at gcc dot gnu.org
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, all releases show the same diagnostics.
>From gcc-bugs-return-548850-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 09:29:32 2016
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Subject: [Bug c++/78924] hiding of template parameter of member template
Date: Tue, 27 Dec 2016 09:29:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Btw. clang++ (3.8.1) shows:
pr78924.cpp:12:48: error: out-of-line definition of 'g' does not match any
declaration in 'A<T>'
template<class B> template<class C> void A<B>::g(C) {
^
pr78924.cpp:14:5: error: variable has incomplete type 'C' (aka 'void')
C c; // the template parameter C, not A's C
^
2 errors generated.
>From gcc-bugs-return-548851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 09:34:24 2016
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Subject: [Bug c++/78928] void(*); accepted in block scope
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, all releases accept that code.
>From gcc-bugs-return-548852-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 10:05:07 2016
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Subject: [Bug tree-optimization/78913] Probably misleading error reported by -Wformat-length
Date: Tue, 27 Dec 2016 10:05:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Well, I understand that char[x] can potentially be at most x-1 characters long.
On the other hand, it's quite common case where one uses a temporary buffer
(reasonable big) which is used by sprintf-family functions. Thus, considering
that content of a string buffer is equal to it's possible size is strict for me
and I would not display such warning.
Thanks for understanding.
>From gcc-bugs-return-548853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 11:00:52 2016
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From: "gccbugbjorn at fahller dot se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78931] New: ICE on C++17 structured bindings from struct with reference member
Date: Tue, 27 Dec 2016 11:00:00 -0000
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Bug ID: 78931
Summary: ICE on C++17 structured bindings from struct with
reference member
Product: gcc
Version: 7.0
Status: UNCONFIRMED
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Priority: P3
Component: c++
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Created attachment 40413
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40413&action=edit
preprocessed t.cpp
GCC 7 snapshot build from svn rev 243933 produces this output for the attached
program:
bjorn@pteranodon /tmp $ LANG=C /opt/gcc-trunk/bin/g++ -std=c++1z t.cpp -v
-save-temps
Using built-in specs.
COLLECT_GCC=/opt/gcc-trunk/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../src/gcc-trunk/configure --prefix=/opt/gcc-trunk
--with-languages=c,cpp : (reconfigured) ../src/gcc-trunk/configure
--prefix=/opt/gcc-trunk --with-languages=c,cpp : (reconfigured)
../src/gcc-trunk/configure --prefix=/opt/gcc-trunk --with-languages=c,cpp
--enable-languages=c,c++,fortran,lto,objc --no-create --no-recursion :
(reconfigured) ../src/gcc-trunk/configure --prefix=/opt/gcc-trunk
--with-languages=c,cpp --enable-languages=c,c++,fortran,lto,objc --no-create
--no-recursion : (reconfigured) ../src/gcc-trunk/configure
--prefix=/opt/gcc-trunk --with-languages=c,cpp
--enable-languages=c,c++,fortran,lto,objc --no-create --no-recursion :
(reconfigured) ../src/gcc-trunk/configure --prefix=/opt/gcc-trunk
--with-languages=c,cpp --enable-languages=c,c++,fortran,lto,objc --no-create
--no-recursion
Thread model: posix
gcc version 7.0.0 20161227 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-std=c++1z' '-v' '-save-temps' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/cc1plus -E -quiet -v
-D_GNU_SOURCE t.cpp -mtune=generic -march=x86-64 -std=c++1z -fpch-preprocess -o
t.ii
ignoring nonexistent directory
"/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../include/c++/7.0.0
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../include/c++/7.0.0/x86_64-pc-linux-gnu
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../include/c++/7.0.0/backward
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/include
/usr/local/include
/opt/gcc-trunk/include
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-std=c++1z' '-v' '-save-temps' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/cc1plus -fpreprocessed
t.ii -quiet -dumpbase t.cpp -mtune=generic -march=x86-64 -auxbase t -std=c++1z
-version -o t.s
GNU C++14 (GCC) version 7.0.0 20161227 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 7.0.0 20161227 (experimental), GMP version
6.1.0, MPFR version 3.1.3-p4, MPC version 1.0.2, isl version 0.15
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++14 (GCC) version 7.0.0 20161227 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 7.0.0 20161227 (experimental), GMP version
6.1.0, MPFR version 3.1.3-p4, MPC version 1.0.2, isl version 0.15
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: d72b3d35df92f054e2182b3bf4b43893
t.cpp: In function 'int main()':
t.cpp:2:5: error: invalid first operand of MEM_REF
int main()
^~~~
_2
t.cpp:10:10: note: in statement
return p;
^
D.2090 = MEM[(int &)_2];
t.cpp:2:5: internal compiler error: verify_gimple failed
int main()
^~~~
0xdafdef verify_gimple_in_cfg(function*, bool)
../../src/gcc-trunk/gcc/tree-cfg.c:5266
0xc93046 execute_function_todo
../../src/gcc-trunk/gcc/passes.c:1965
0xc940eb execute_todo
../../src/gcc-trunk/gcc/passes.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Changing the struct to use a value member instead of a reference works fine.
>From gcc-bugs-return-548854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 11:09:13 2016
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78931] [7 Regression] ICE on C++17 structured bindings from struct with reference member
Date: Tue, 27 Dec 2016 11:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78931
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-27
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Summary|ICE on C++17 structured |[7 Regression] ICE on C++17
|bindings from struct with |structured bindings from
|reference member |struct with reference
| |member
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r242377.
>From gcc-bugs-return-548855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 12:06:01 2016
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From: "xqr4n54r1 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/78932] New: [ARM] -O2 generates wrong code
Date: Tue, 27 Dec 2016 12:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78932
Bug ID: 78932
Summary: [ARM] -O2 generates wrong code
Product: gcc
Version: 4.5.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: xqr4n54r1 at hotmail dot com
Target Milestone: ---
Host: arm-linux
Target: arm-linux-uclibcgnueabi
Build: x86_64-pc-linux-gnu
Created attachment 40414
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40414&action=edit
Attachment has following : - filter_with_O2.{c|i|s} : Indicates that the
problem has occurred. - filter_without_bbro.{c|i|s} : Indicates solution that
compile without bbro I mentioned above as 1.
I compiled the linux-2.6.27
(https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tag/?h=v2.6.37)
for broadcom arm. I noticed that the chksum of some TCP packages was broken. I
found the function (sk_run_filter:filter.c) that was the problem, and I made
the following changes on it to fix the problem.
1. unsigned int __attribute__((optimize("-fno-reorder-blocks")))
sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen)
2. unsigned int __attribute__((optimize("-Os"))) sk_run_filter(struct sk_buff
*skb, struct sock_filter *filter, int flen)
3. unsigned int __attribute__((optimize("-O1"))) sk_run_filter(struct sk_buff
*skb, struct sock_filter *filter, int flen)
4. static void *load_pointer(struct sk_buff *skb, int k, unsigned int size,
void *buffer) -> the inline function used is removed inline keyword.
--> These above results brought me to a bug of optimize gcc.
Compile options:
arm-linux-gcc -Wp,-MD,net/core/.filter.o.d -nostdinc -isystem
/usr/lib/arm-linux-uclibcgnueabi/4.5.3/include
-I/kernel/linux-2_6.37/arch/arm/include -Iinclude -include
include/generated/autoconf.h -D__KERNEL__ -mlittle-endian
-Iarch/arm/mach-brcm-hnd/include -Iarch/arm/plat-brcm/include -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security
-fno-delete-null-pointer-checks -fwrapv -Dlinux -DHNDCTF -DCTFPOOL -DCTFMAP
-DPKTC -DCTF_IPV6 -O2 -marm -ffreestanding -fno-dwarf2-cfi-asm
-mabi=aapcs-linux -mno-thumb-interwork -funwind-tables -D__LINUX_ARM_ARCH__=7
-march=armv7-a -msoft-float -Uarm -ggdb -Wframe-larger-than=2048
-fno-stack-protector -fomit-frame-pointer -Wdeclaration-after-statement
-Wno-pointer-sign -fno-strict-overflow -fconserve-stack
-D"KBUILD_STR(s)=\#s" -D"KBUILD_BASENAME=KBUILD_STR(filter)"
-D"KBUILD_MODNAME=KBUILD_STR(filter)" -c -o net/core/.tmp_filter.o
net/core/filter.c
--------------------------
Attachment has following :
- filter_with_O2.{c|i|s} : Indicates that the problem has occurred.
- filter_without_bbro.{c|i|s} : Indicates solution that compile without bbro
I mentioned above as 1.
- filter_without_inline.{c|i|s} : Indicates solution that compile without
inline I mentioned above as 4.
>From gcc-bugs-return-548856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 12:10:22 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78931] [7 Regression] ICE on C++17 structured bindings from struct with reference member
Date: Tue, 27 Dec 2016 12:10:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
It looks related to PR78890.
>From gcc-bugs-return-548857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 12:58:38 2016
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78933] New: ICE: in decode_cmdline_option, at opts-common.c:671 with -fno-strong-eval-order
Date: Tue, 27 Dec 2016 12:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78933
Bug ID: 78933
Summary: ICE: in decode_cmdline_option, at opts-common.c:671
with -fno-strong-eval-order
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Compiler output:
$ echo "" | x86_64-pc-linux-gnu-gcc -fno-strong-eval-order -x c -
cc1: internal compiler error: in decode_cmdline_option, at opts-common.c:671
0x160a5bc decode_cmdline_option
/repo/gcc-trunk/gcc/opts-common.c:671
0x160a5bc decode_cmdline_options_to_array(unsigned int, char const**, unsigned
int, cl_decoded_option**, unsigned int*)
/repo/gcc-trunk/gcc/opts-common.c:836
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-243928-checking-yes-rtl-df-extra-nographite-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--without-cloog --without-ppl --without-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-243928-checking-yes-rtl-df-extra-nographite-amd64
Thread model: posix
gcc version 7.0.0 20161226 (experimental) (GCC)
>From gcc-bugs-return-548858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 13:44:58 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68270] [MPX] Common pattern for variable sized data clashes with MPX bound checks
Date: Tue, 27 Dec 2016 13:44:00 -0000
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Alexander Ivchenko <aivchenk at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aivchenk at gmail dot com
--- Comment #3 from Alexander Ivchenko <aivchenk at gmail dot com> ---
Addressed in
------------------------------------------------------------------------
r243936 | aivchenk | 2016-12-27 16:31:43 +0300 (Tue, 27 Dec 2016) | 18 lines
2016-12-27 Alexander Ivchenko <alexander.ivchenko@intel.com>
* c-family/c.opt (flag_chkp_flexible_struct_trailing_arrays):
Add new option.
(fchkp-narrow-to-innermost-array): Fix typo.
* doc/cpp.texi (flag_chkp_flexible_struct_trailing_arrays): Ditto.
* tree-chkp.c (chkp_may_narrow_to_field ): Forbid
narrowing when flag_chkp_flexible_struct_trailing_arrays is used
and the field is the last array field in the structure.
2016-12-27 Alexander Ivchenko <alexander.ivchenko@intel.com>
* gcc.target/i386/mpx/vla-trailing-1-lbv.c: New test.
* gcc.target/i386/mpx/vla-trailing-1-nov.c: Ditto.
* gcc.target/i386/mpx/vla-trailing-1-ubv.c: Ditto.
The new option -fchkp-flexible-struct-trailing-arrays will allow to treat all
trailing arrays in structures as possibly flexible.
The bug can be closed
>From gcc-bugs-return-548859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 13:55:16 2016
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Subject: [Bug target/65705] ICE: SIGSEGV in contains_struct_check with -fsanitize=null -fcheck-pointer-bounds
Date: Tue, 27 Dec 2016 13:55:00 -0000
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Alexander Ivchenko <aivchenk at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aivchenk at gmail dot com
--- Comment #3 from Alexander Ivchenko <aivchenk at gmail dot com> ---
The same problem as: whttps://gcc.gnu.org/bugzilla/show_bug.cgi?id=69804
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/78933] [7 Regression] ICE: in decode_cmdline_option, at opts-common.c:671 with -fno-strong-eval-order
Date: Tue, 27 Dec 2016 14:14:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-27
CC| |marxin at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Summary|ICE: in |[7 Regression] ICE: in
|decode_cmdline_option, at |decode_cmdline_option, at
|opts-common.c:671 with |opts-common.c:671 with
|-fno-strong-eval-order |-fno-strong-eval-order
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r238176. I'll take a look.
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Subject: [Bug target/78904] zero-extracts are not effective
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78904
--- Comment #12 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue Dec 27 14:20:19 2016
New Revision: 243937
URL: https://gcc.gnu.org/viewcvs?rev=243937&root=gcc&view=rev
Log:
PR target/78904
* config/i386/constraints.md (Bc): New special memory constraint.
* config/i386/i386.md (*cmpqi_ext_1, *extvqi, *extzvqi): Use Bc
constraint with nonimmediate_operand to allow constant memory operands.
(*cmpqi_ext_3, insv<mode>_1, addqi_ext_1, *testqi_ext_1, andqi_ext_1)
(*<any_or:code>qi_ext_1, *xorqi_ext_1_cc): Use Bc constraint
with general_operand to allow constant memory operands.
testsuite/ChangeLog:
PR target/78904
* gcc.target/i386/pr78904-3.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr78904-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/constraints.md
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/78933] [7 Regression] ICE: in decode_cmdline_option, at opts-common.c:671 with -fno-strong-eval-order
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40415
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40415&action=edit
Untested patch
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Subject: [Bug translation/78922] Comment submitted for translation in stringop.opt
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 27 14:41:04 2016
New Revision: 243938
URL: https://gcc.gnu.org/viewcvs?rev=243938&root=gcc&view=rev
Log:
PR translation/78922
* config/i386/stringop.opt: Remove.
Removed:
trunk/gcc/config/i386/stringop.opt
Modified:
trunk/gcc/ChangeLog
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Subject: [Bug translation/78922] Comment submitted for translation in stringop.opt
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 27 14:45:24 2016
New Revision: 243939
URL: https://gcc.gnu.org/viewcvs?rev=243939&root=gcc&view=rev
Log:
2016-12-27 Jakub Jelinek <jakub@redhat.com>
PR translation/78922
* config/i386/stringop.opt: Remove.
* gcc.pot: Regenerate.
Removed:
branches/gcc-6-branch/gcc/config/i386/stringop.opt
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/po/ChangeLog
branches/gcc-6-branch/gcc/po/gcc.pot
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Subject: [Bug translation/78922] Comment submitted for translation in stringop.opt
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 27 14:49:08 2016
New Revision: 243940
URL: https://gcc.gnu.org/viewcvs?rev=243940&root=gcc&view=rev
Log:
PR translation/78922
* config/i386/stringop.opt: Remove.
Removed:
branches/gcc-5-branch/gcc/config/i386/stringop.opt
Modified:
branches/gcc-5-branch/gcc/ChangeLog
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Subject: [Bug translation/78922] Comment submitted for translation in stringop.opt
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/78925] Inline friend template function not hidden during ADL
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is the same problem as described in PR 54376 and we decided GCC, EDG, and
MSVC were right to reject the code.
>From gcc-bugs-return-548868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 15:37:07 2016
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Subject: [Bug target/78631] [Intel MPX] libmpxwrappers shared library leads to a non-bounds-preserving memcpy()
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Alexander Ivchenko <aivchenk at gmail dot com> changed:
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--- Comment #12 from Alexander Ivchenko <aivchenk at gmail dot com> ---
Fixed with r243942
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From: "lukas at wunner dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68725] suboptimal handling of constant compound literals
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68725
--- Comment #3 from Lukas Wunner <lukas at wunner dot de> ---
(In reply to Andrew Pinski from comment #2)
> I think this has now been fixed on the trunk. There is a pass which combines
> stores for constants.
No, unfortunately this is not fixed in trunk.
You're right that trunk uses 2 movabs instead of 16 movb instructions to
generate each GUID on the stack, requiring just 20 bytes instead of 80 bytes.
But that wasn't the point. The point was that constant compound literals
shouldn't be generated on the stack at runtime. They should be put in rodata
instead. That would be even more space efficient (16 bytes), more time
efficient, and also seems preferable from a security perspective: The compound
literals may contain function pointers and as such would be an interesting
target for attackers. Putting them in rodata reduces our attack surface.
The pretty-printed tree in test.c.003t.original looks fine:
{
const struct efi_guid_t guid1 = <<< Unknown tree: compound_literal_expr
const struct efi_guid_t D.2566 = {.b={215, 118, 49, 228, 232, 182, 39, 72,
183, 132, 127, 253, 196, 182, 133, 97}}; >>>;
const struct efi_guid_t guid2 = <<< Unknown tree: compound_literal_expr
const struct efi_guid_t D.2568 = {.b={29, 145, 250, 220, 235, 38, 159, 70,
162, 32, 56, 183, 220, 70, 18, 32}}; >>>;
const struct efi_guid_t guid1 = <<< Unknown tree: compound_literal_expr
const struct efi_guid_t D.2566 = {.b={215, 118, 49, 228, 232, 182, 39, 72,
183, 132, 127, 253, 196, 182, 133, 97}}; >>>;
const struct efi_guid_t guid2 = <<< Unknown tree: compound_literal_expr
const struct efi_guid_t D.2568 = {.b={29, 145, 250, 220, 235, 38, 159, 70,
162, 32, 56, 183, 220, 70, 18, 32}}; >>>;
efi_print_guid_ptr (&guid1);
efi_print_guid_ptr (&<<< Unknown tree: compound_literal_expr
const struct efi_guid_t D.2569 = {.b={141, 147, 81, 249, 11, 98, 239, 66,
130, 121, 168, 75, 121, 97, 120, 152}}; >>>);
efi_print_guid (guid2);
efi_print_guid (<<< Unknown tree: compound_literal_expr
const struct efi_guid_t D.2570 = {.b={44, 111, 179, 211, 81, 213, 212, 17,
154, 70, 0, 144, 39, 63, 193, 77}}; >>>);
}
But the gimplified tree in test.c.004t.gimple already generates the GUIDs on
the stack if they're passed by reference:
main ()
{
const struct efi_guid_t D.2569;
static const struct efi_guid_t C.0 = {.b={44, 111, 179, 211, 81, 213, 212,
17, 154, 70, 0, 144, 39, 63, 193, 77}};
const struct efi_guid_t guid1;
static const struct efi_guid_t guid2 = {.b={29, 145, 250, 220, 235, 38, 159,
70, 162, 32, 56, 183, 220, 70, 18, 32}};
try
{
guid1.b[0] = 215;
guid1.b[1] = 118;
guid1.b[2] = 49;
guid1.b[3] = 228;
guid1.b[4] = 232;
guid1.b[5] = 182;
guid1.b[6] = 39;
guid1.b[7] = 72;
guid1.b[8] = 183;
guid1.b[9] = 132;
guid1.b[10] = 127;
guid1.b[11] = 253;
guid1.b[12] = 196;
guid1.b[13] = 182;
guid1.b[14] = 133;
guid1.b[15] = 97;
efi_print_guid_ptr (&guid1);
D.2569.b[0] = 141;
D.2569.b[1] = 147;
D.2569.b[2] = 81;
D.2569.b[3] = 249;
D.2569.b[4] = 11;
D.2569.b[5] = 98;
D.2569.b[6] = 239;
D.2569.b[7] = 66;
D.2569.b[8] = 130;
D.2569.b[9] = 121;
D.2569.b[10] = 168;
D.2569.b[11] = 75;
D.2569.b[12] = 121;
D.2569.b[13] = 97;
D.2569.b[14] = 120;
D.2569.b[15] = 152;
efi_print_guid_ptr (&D.2569);
efi_print_guid (guid2);
efi_print_guid (C.0);
}
finally
{
guid1 = {CLOBBER};
}
}
So it looks like the bug is in the gimplification pass. My guess is that
gimplify_compound_literal_expr() initially sets TREE_READONLY(decl) = 1, but
when gimplifying the function call this gets reverted to 0...
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Subject: [Bug target/71921] missed vectorization optimization
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Arjan van de Ven <arjan at linux dot intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|6.1.1 |6.3.0
--- Comment #6 from Arjan van de Ven <arjan at linux dot intel.com> ---
Having poked at this a bunch, I now have a proposed patch (well I know it needs
work, but it's there to show the idea) and a set of "evidence" and an improved
test case. I'll be attaching the raw files to this bug and then make a summary
post as well.
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--- Comment #8 from Arjan van de Ven <arjan at linux dot intel.com> ---
Created attachment 40417
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refined test case
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--- Comment #7 from Arjan van de Ven <arjan at linux dot intel.com> ---
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prototype patch
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--- Comment #10 from Arjan van de Ven <arjan at linux dot intel.com> ---
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generated ASM with vectorization (no patch / no fast-math)
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Makefile
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--- Comment #12 from Arjan van de Ven <arjan at linux dot intel.com> ---
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generated ASM without vectorization (no patch / no fast-math)
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--- Comment #11 from Arjan van de Ven <arjan at linux dot intel.com> ---
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generated ASM with vectorization and fast-math (no patch)
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--- Comment #13 from Arjan van de Ven <arjan at linux dot intel.com> ---
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generated ASM with vectorization (with patch / no fast-math)
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--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So MIN_EXPR/MAX_EXPR is not safe due to NaNs. There was some work on adding an
IEEE MIN_EXPR/MAX_EXPR which is.
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--- Comment #15 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Read https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00693.html also. There is
much more to that thread than just in August IIRC. Some in September and in
October too.
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--- Comment #16 from Arjan van de Ven <arjan at linux dot intel.com> ---
A comparable (but optimized to generate smaller asm) testcase is this:
#include <algorithm>
void RELU(float *buffer, int size)
{
float *ptr = (float *) __builtin_assume_aligned(buffer, 64);
int i;
for (i = 0; i < (size * 8); i++) {
float f = ptr[i];
ptr[i] = std::max(float(0), f);
}
}
this will generate, without vectorization on x86 the following core asm
(-mavx2):
vmovss (%rdi), %xmm0
addq $4, %rdi
vmaxss %xmm1, %xmm0, %xmm0
vmovss %xmm0, -4(%rdi)
cmpq %rax, %rdi
jne .L6
but with vectorization enabled one gets
vmovaps (%rdi), %ymm1
addl $1, %eax
addq $32, %rdi
vcmpltps %ymm1, %ymm2, %ymm0
vandps %ymm1, %ymm0, %ymm0
vmovaps %ymm0, -32(%rdi)
cmpl %eax, %esi
ja .L4
or in other words, the compiler trusts vmax[sp]s for the non-vector case, but
does not trust it with the vector case without -ffast-math.
when adding -ffast-math to the vectorized case one gets
vmaxps (%rdi), %ymm1, %ymm0
addl $1, %eax
addq $32, %rdi
vmovaps %ymm0, -32(%rdi)
cmpl %eax, %esi
ja .L4
as the core loop, which is the expected outcome for this case.
I will make the argument that gcc is wrong to not trust vmaxps in the
vectorization case on x86, because it clearly trusts it in the non-vector case.
The attached patch will make this so, but does it for all architectures not
just x86; I will seek help to turn this into a proper patch, but wanted to put
it here for now to keep track of it.
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--- Comment #17 from Arjan van de Ven <arjan at linux dot intel.com> ---
(In reply to Andrew Pinski from comment #15)
> Read https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00693.html also. There
> is much more to that thread than just in August IIRC. Some in September and
> in October too.
I understand the argument, but if that is true, wouldn't it be unsafe to use
vmaxss as well, which gcc DOES generate?
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Subject: [Bug c++/78934] New: long double%intmax_t errors, long double%double errors.
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Bug ID: 78934
Summary: long double%intmax_t errors, long double%double
errors.
Product: gcc
Version: unknown
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Priority: P3
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Target Milestone: ---
disk-refresh.cpp:491:44: error: invalid operands of types 'long double' and
'long double' to binary 'operator%'
intmax_t month=(365.24224*24*60^60*1000/(std::abs(n%365.24224)/12))+1;//days
per month
~^~~~~~~~~~~~~~~
?
int seems to be an int-only op now. this is surely not according to spec.
the implicit type conversions should be there.
#include <cstdint>
int main(void)
intmax_t i2=2,i3=3;
long double ld4=5,ld5=5;
long double
dresult1=i2%ld4,dresult2=ld4%i2,dresult3=ld4%ld5,dresult4=i2%i3;
intmax_t
iresult1=i2%ld4,iresult2=ld4%i2,iresult3=ld4%ld5,iresult4=i2%i3;
//if this works, it's because the optimizer blew the code away
return 0;
the above is the invalid error message I get from gcc 6.2.0
this is basic math that's failing.
Tue 12/27/2016 14:53:15.53 L:\projects\disk-refresh\1.1\win\test>g++
-opctop.exe pctop.cpp
pctop.cpp: In function 'int main()':
pctop.cpp:6:12: error: invalid operands of types 'intmax_t {aka long long int}'
and 'long double' to binary 'operator%'
dresult1=i2%ld4,
~~^~~~
pctop.cpp:11:12: error: invalid operands of types 'intmax_t {aka long long
int}' and 'long double' to binary 'operator%'
iresult1=i2%ld4,
~~^~~~
Tue 12/27/2016 14:55:22.90 L:\projects\disk-refresh\1.1\win\test>gcc --version
gcc (i686-win32-sjlj-rev1, Built by MinGW-W64 project) 6.2.0
Copyright (C) 2016 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.
Tue 12/27/2016 14:56:46.14 L:\projects\disk-refresh\1.1\win\test>
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Subject: [Bug c++/78934] long double%intmax_t errors, long double%double errors.
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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> ---
>the implicit type conversions should be there.
type conversion to what?
Double never has an implicit type conversion to an integer type except when
assigning to an lvalue of integer type.
>From gcc-bugs-return-548884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:01:09 2016
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Subject: [Bug c++/78934] long double%intmax_t errors, long double%double errors.
Date: Tue, 27 Dec 2016 23:01:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is a function call modf which you want to use here really.
>From gcc-bugs-return-548885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:05:54 2016
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/71921] missed vectorization optimization
Date: Tue, 27 Dec 2016 23:05:00 -0000
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--- Comment #18 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Arjan van de Ven from comment #17)
> (In reply to Andrew Pinski from comment #15)
> > Read https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00693.html also. There
> > is much more to that thread than just in August IIRC. Some in September and
> > in October too.
>
> I understand the argument, but if that is true, wouldn't it be unsafe to use
> vmaxss as well, which gcc DOES generate?
Your argument is the opposite way around. MIN_EXPR/MAX_EXPR does not specify
the behavior with respect to NaNs so using vmaxss here is ok. But doing the
conversion without -ffast-math to MIN/MAX EXPR won't work in general. There
are some other passes which will use that the fact it is not specified and
optimizing in correctly. Or other targets which might emit MIN/MAX_EXPR
differently from x86. GCC is not just about x86.
>From gcc-bugs-return-548886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:07:52 2016
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Subject: [Bug target/71921] missed vectorization optimization
Date: Tue, 27 Dec 2016 23:07:00 -0000
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--- Comment #19 from Arjan van de Ven <arjan at linux dot intel.com> ---
> GCC is not just about x86.
I know that, which is why I know my patch is not correct, but more of a precise
bug report... clearly this need to be done in a way that does not hurt other
architectures.
>From gcc-bugs-return-548887-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:14:05 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78934] long double%intmax_t errors, long double%double errors.
Date: Tue, 27 Dec 2016 23:14:00 -0000
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Jim Michaels <jmichae3 at yahoo dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86-w32-mingw32
Host| |x86-w32-mingw32
Version|unknown |6.2.0
Resolution|INVALID |FIXED
--- Comment #3 from Jim Michaels <jmichae3 at yahoo dot com> ---
the problems are not (I suspect) in mingw-w64 project code but in gcc itself.
(In reply to Andrew Pinski from comment #2)
> There is a function call modf which you want to use here really.
in C++ is that necessary?
>From gcc-bugs-return-548888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:15:50 2016
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/78935] New: ICE on allocating derived type coarray with allocatable components
Date: Tue, 27 Dec 2016 23:15:00 -0000
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Bug ID: 78935
Summary: ICE on allocating derived type coarray with
allocatable components
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: damian at sourceryinstitute dot org
Target Milestone: ---
As shown below, a trunk build dated 20161224 reports an internal compiler error
with an array allocation statement in the same scope as the allocation of a
coarray with allocatable components. No ICE occurs when (1) the two modules are
concatenated into one file or (2) the USE statement is moved into the
subroutine or (3) the order of the allocate statements is reverse or (4) the
USE statement is moved into the subroutine. Because this is a greatly reduced
bug reproducer from an OpenCoarrays user, I don't know which of the workarounds
is feasible or will work in the full application setting.
$ gfortran --version
GNU Fortran (GCC) 7.0.0 20161224 (experimental)
$ cat declarations.f90
module DECLARATIONS
type EXCHANGE_BOUNDHI
real,allocatable::NORMALS(:)
end type
type(EXCHANGE_BOUNDHI),allocatable::IEXBOUNDHISI[:]
real, allocatable :: x(:)
end module
$ cat communications.f90
USE DECLARATIONS
contains
SUBROUTINE EXHBOUNDHIGHER2()
allocate(x(1))
allocate(IEXBOUNDHISI[*])
END SUBROUTINE
END
$ gfortran -fcoarray=lib -c declarations.f90 communications.f90
communications.f90:5:0:
allocate(IEXBOUNDHISI[*])
internal compiler error: in gfc_conv_descriptor_token, at
fortran/trans-array.c:305
0x6faa1d gfc_conv_descriptor_token(tree_node*)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-array.c:303
0x73ae88 gfc_trans_structure_assign(tree_node*, gfc_expr*, bool, bool)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-expr.c:7534
0x73bc32 gfc_conv_structure(gfc_se*, gfc_expr*, int)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-expr.c:7651
0x73425c gfc_conv_expr(gfc_se*, gfc_expr*)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-expr.c:7818
0x73db75 gfc_trans_assignment_1
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-expr.c:9877
0x781b59 gfc_trans_allocate(gfc_code*)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-stmt.c:6293
0x6f3557 trans_code
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans.c:1966
0x7245f8 gfc_generate_function_code(gfc_namespace*)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-decl.c:6285
0x7242ec gfc_generate_contained_functions
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-decl.c:5280
0x7242ec gfc_generate_function_code(gfc_namespace*)
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/trans-decl.c:6214
0x6abf76 translate_all_program_units
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/parse.c:6008
0x6abf76 gfc_parse_file()
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/parse.c:6208
0x6ef672 gfc_be_parse_file
/home/rouson/Desktop/Builds/opencoarrays/prerequisites/downloads/trunk/gcc/fortran/f95-lang.c:202
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-548889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:19:25 2016
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Subject: [Bug c++/78934] long double%intmax_t errors, long double%double errors.
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |INVALID
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
>From gcc-bugs-return-548890-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:37:21 2016
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Subject: [Bug fortran/78935] ICE on allocating derived type coarray with allocatable components
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--- Comment #1 from Damian Rouson <damian at sourceryinstitute dot org> ---
Workaround (4) in the original submission is mistakenly redundant. It's an
interestingly fragile ICE that disappears with seemingly minor changes to the
code. For example, it also disappears if the first allocation argument is a
scalar.
>From gcc-bugs-return-548891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 27 23:45:32 2016
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Subject: [Bug target/78936] New: Interprocedural constant propagation miscompiles C++ methods on i686 Windows
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methods on i686 Windows
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rnk at google dot com
Target Milestone: ---
The following test case has an issue where some interprocedural optimziation in
GCC 6.2.0 appears to have mixed up the calling convention of a C++ thiscall
method:
https://drive.google.com/open?id=0B5-KodWdXF4YZ1pVczVQX0tiOGM
When I compile the linked file like so, I get the following assembly snippets,
which seem to corrupt the stack pointer:
$ g++ -O2 llvm-subtarget-emitter.cpp -S -o t.s
$ c++filt < t.s | less
...
(anonymous namespace)::SubtargetEmitter::EmitProcessorProp(llvm::raw_ostream&,
llvm::Record const*, llvm::StringRef, char) [clone .constprop.544]:
...
addl $28, %esp
.cfi_remember_state
.cfi_def_cfa_offset 20
popl %ebx
.cfi_restore 3
.cfi_def_cfa_offset 16
popl %esi
.cfi_restore 6
.cfi_def_cfa_offset 12
popl %edi
.cfi_restore 7
.cfi_def_cfa_offset 8
popl %ebp
.cfi_restore 5
.cfi_def_cfa_offset 4
ret
.p2align 4,,10
...
(anonymous namespace)::SubtargetEmitter::EmitSchedModel(llvm::raw_ostream&):
...
call (anonymous
namespace)::SubtargetEmitter::EmitProcessorProp(llvm::raw_ostream&,
llvm::Record const*, llvm::StringRef, char) [clone .constprop.544]
movl 28(%edi), %edx
movl 8(%ebp), %eax
subl $8, %esp
movl $LC170, (%esp)
movl $17, 4(%esp)
call (anonymous
namespace)::SubtargetEmitter::EmitProcessorProp(llvm::raw_ostream&,
llvm::Record const*, llvm::StringRef, char) [clone .constprop.544]
movl 28(%edi), %edx
movl 8(%ebp), %eax
subl $8, %esp
...
Note that the "ret" instruction doesn't match the "sub $8, %esp" instructions
after the call sites of SubtargetEmitter::EmitProcessorProp. The callee-cleanup
property of the EmitProcessorProp clone seems to have been lost, or the call
site hasn't been updated to treat it as a caller cleanup call.
This issue was encountered while building LLVM with the latest GCC provided by
mingw-w64: http://lists.llvm.org/pipermail/cfe-dev/2016-December/051980.html
$ g++ --version
g++.exe (i686-posix-dwarf-rev1, Built by MinGW-W64 project) 6.2.0
Copyright (C) 2016 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.
>From gcc-bugs-return-548892-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 00:42:34 2016
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Subject: [Bug translation/78937] New: New data.rel.ro.local section in TW's gcc
Date: Wed, 28 Dec 2016 00:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78937
Bug ID: 78937
Summary: New data.rel.ro.local section in TW's gcc
Product: gcc
Version: 6.2.1
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$ cat x.c
static const struct { int i; } foobar = {42};
static const struct { const char *n; } foobaz = {"moo"};
When compiled with the openSUSE Leap 42.2 + devel:gcc "gcc version 6.2.1
20161214 [gcc-6-branch revision 243648] (SUSE Linux)", the result is
anticipated; both symbols end up in rodata:
$ gcc-6 -std=gnu11 -c x.c && nm x.o | grep fooba
0000000000000000 r foobar
0000000000000008 r foobaz
$ gcc-6 -std=gnu11 -S x.c && grep section x.s
.section .rodata
.section .note.GNU-stack,"",@progbits
However, when compiled with pretty much the same compiler, openSUSE Tumbleweed
"gcc version 6.2.1 20161209 [gcc-6-branch revision 243481] (SUSE Linux)", the
following sections are output instead:
$ gcc-6 -std=gnu11 -c x.c -fno-use-linker-plugin && nm x.o | grep fooba
0000000000000000 r foobar
0000000000000000 d foobaz
$ gcc-6 -std=gnu11 -S x.c -fno-use-linker-plugin && grep section x.s
.section .rodata
.section .data.rel.ro.local,"aw",@progbits
.section .note.GNU-stack,"",@progbits
This section seems to be new; why does foobaz end up in .data now? Is this a
result of how gcc itself was built? The only difference is
42.2 gcc -v: [...] --with-default-libstdcxx-abi=gcc4-compatible
TW gcc -v: [...] --enable-plugin
C++ is not used in this case, so is the plugin thing the cause (and if, should
-fno-use-linker-plugin not disable it)?
>From gcc-bugs-return-548893-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 00:49:04 2016
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Subject: [Bug translation/78937] New data.rel.ro.local section in TW's gcc
Date: Wed, 28 Dec 2016 00:49:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Looks like the newer GCC 6.2.1 defaults to -fPIE.
>From gcc-bugs-return-548894-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 00:53:35 2016
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Subject: [Bug middle-end/78937] New data.rel.ro.local section in TW's gcc
Date: Wed, 28 Dec 2016 00:53:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I just tried a toolchain which I compiled myself. That is .rodata is normally
used unless I use -fPIE/-fpie and then .data.rel.ro.local section is used.
Basically this section is readonly but has relocations.
>From gcc-bugs-return-548895-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 01:04:36 2016
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Subject: [Bug middle-end/78937] New data.rel.ro.local section in TW's gcc
Date: Wed, 28 Dec 2016 01:04:00 -0000
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--- Comment #3 from Jan Engelhardt <jengelh at inai dot de> ---
Now that you mention it, I have a PIE-by-default extension installed on that
one (/usr/lib64/gcc/x86_64-suse-linux/6/defaults.spec file). Thanks for
clearing that up.
>From gcc-bugs-return-548896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 01:31:23 2016
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Subject: [Bug c++/78934] long double%intmax_t errors, long double%double errors.
Date: Wed, 28 Dec 2016 01:31:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jim Michaels from comment #0)
> this is surely not according to spec.
Wrong again.
"The operands of * and / shall have arithmetic or unscoped enumeration type;
the operands of % shall have integral or unscoped enumeration type."
Please stop reporting things as bugs that are just due to you not understanding
C++.
>From gcc-bugs-return-548897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 08:39:22 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78938] New: [7 Regression] ICE in expand_vec_cond_expr, at optabs.c:5636 w/ -mavx512bw -ftree-loop-vectorize -O1
Date: Wed, 28 Dec 2016 08:39:00 -0000
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Bug ID: 78938
Summary: [7 Regression] ICE in expand_vec_cond_expr, at
optabs.c:5636 w/ -mavx512bw -ftree-loop-vectorize -O1
Product: gcc
Version: 7.0
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gcc-7.0.0-alpha20161225 snapshot ICEs when compiling the following snippet w/
-mavx512bw -ftree-loop-vectorize -O1 (-O2, -O3, -Ofast):
short int y5;
void
ym (char c5)
{
int sg = 1;
for (;;)
{
int *ol = (int *)&y5;
if (sg != 0)
*ol = 0;
while (c5 < 1)
{
int u9 = *ol != y5;
int ie = c5 != 0;
sg = (u9 == ie) ? 2 : 0;
++c5;
}
}
}
% x86_64-pc-linux-gnu-gcc-7.0.0-alpha20161225 -mavx512bw -O1
-ftree-loop-vectorize -c jmw6yft1.c
jmw6yft1.c: In function 'ym':
jmw6yft1.c:4:1: internal compiler error: in expand_vec_cond_expr, at
optabs.c:5636
ym (char c5)
^~
>From gcc-bugs-return-548898-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 09:20:17 2016
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Subject: [Bug fortran/78935] [7 Regression] ICE on allocating derived type coarray with allocatable components
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.8.5, 4.9.4, 5.4.0, 6.3.0
Keywords| |ice-on-valid-code
Last reconfirmed| |2016-12-28
CC| |marxin at gcc dot gnu.org,
| |vehre at gmx dot de
Ever confirmed|0 |1
Summary|ICE on allocating derived |[7 Regression] ICE on
|type coarray with |allocating derived type
|allocatable components |coarray with allocatable
| |components
Target Milestone|--- |7.0
Known to fail| |4.7.4, 7.0
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r243021. In 4.7.x times, it used to ICE too.
>From gcc-bugs-return-548899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 09:33:35 2016
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/78938] [7 Regression] ICE in expand_vec_cond_expr, at optabs.c:5636 w/ -mavx512bw -ftree-loop-vectorize -O1
Date: Wed, 28 Dec 2016 09:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78938
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-28
CC| |alan.hayward at arm dot com,
| |marxin at gcc dot gnu.org
Target Milestone|--- |7.0
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r237065.
>From gcc-bugs-return-548900-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 09:52:48 2016
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From: "gccbugbjorn at fahller dot se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78939] New: <tuple> interferes with structured binding from struct
Date: Wed, 28 Dec 2016 09:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78939
Bug ID: 78939
Summary: <tuple> interferes with structured binding from struct
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gccbugbjorn at fahller dot se
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Created attachment 40423
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40423&action=edit
preprocessed source
Using a home build from rvn rev 243954, I get the following error from the
attached program.
bjorn@pteranodon /tmp $ LANG=C /opt/gcc-trunk/bin/g++ -std=c++1z t.cpp -v
-save-temps
Using built-in specs.
COLLECT_GCC=/opt/gcc-trunk/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../src/gcc-trunk/configure --prefix=/opt/gcc-trunk
--with-languages=c,cpp : (reconfigured) ../src/gcc-trunk/configure
--prefix=/opt/gcc-trunk --with-languages=c,cpp : (reconfigured)
../src/gcc-trunk/configure --prefix=/opt/gcc-trunk --with-languages=c,cpp
--enable-languages=c,c++,fortran,lto,objc --no-create --no-recursion :
(reconfigured) ../src/gcc-trunk/configure --prefix=/opt/gcc-trunk
--with-languages=c,cpp --enable-languages=c,c++,fortran,lto,objc --no-create
--no-recursion : (reconfigured) ../src/gcc-trunk/configure
--prefix=/opt/gcc-trunk --with-languages=c,cpp
--enable-languages=c,c++,fortran,lto,objc --no-create --no-recursion :
(reconfigured) ../src/gcc-trunk/configure --prefix=/opt/gcc-trunk
--with-languages=c,cpp --enable-languages=c,c++,fortran,lto,objc --no-create
--no-recursion
Thread model: posix
gcc version 7.0.0 20161228 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-std=c++1z' '-v' '-save-temps' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/cc1plus -E -quiet -v
-D_GNU_SOURCE t.cpp -mtune=generic -march=x86-64 -std=c++1z -fpch-preprocess -o
t.ii
ignoring nonexistent directory
"/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../include/c++/7.0.0
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../include/c++/7.0.0/x86_64-pc-linux-gnu
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/../../../../include/c++/7.0.0/backward
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/include
/usr/local/include
/opt/gcc-trunk/include
/opt/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/7.0.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-std=c++1z' '-v' '-save-temps' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/cc1plus -fpreprocessed
t.ii -quiet -dumpbase t.cpp -mtune=generic -march=x86-64 -auxbase t -std=c++1z
-version -o t.s
GNU C++14 (GCC) version 7.0.0 20161228 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 7.0.0 20161228 (experimental), GMP version
6.1.0, MPFR version 3.1.3-p4, MPC version 1.0.2, isl version 0.15
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++14 (GCC) version 7.0.0 20161228 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 7.0.0 20161228 (experimental), GMP version
6.1.0, MPFR version 3.1.3-p4, MPC version 1.0.2, isl version 0.15
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 5b476c9dfff0e6f026bb8151315d0c94
t.cpp: In function 'int main()':
t.cpp:9:9: error: 'std::tuple_size<const S>::value' is not an integral constant
expression
auto& [p] = s;
If <tuple> is not included, it compiles. It also compiles if the decomposition
declaration is changed from reference to value - "auto [p] = s;"
>From gcc-bugs-return-548901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 11:30:02 2016
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Subject: [Bug c++/78940] New: [missed optimization] Useless guard variable in thread_local defaulted constructor
Date: Wed, 28 Dec 2016 11:30:00 -0000
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Bug ID: 78940
Summary: [missed optimization] Useless guard variable in
thread_local defaulted constructor
Product: gcc
Version: 6.3.1
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If I write
extern thread_local std::atomic<int> foo;
gcc will emit guard variables everywhere to ensure it is properly constructed
before use. The workaround is to wrap foo in an inline function, so the
compiler can see its definition. That doesn't work when the constructor is
defaulted:
//////////// begin example ////////////////
// following libstdc++ std::atomic
template <typename T>
struct my_atomic {
T n;
my_atomic() = default;
explicit constexpr my_atomic(T n) : n(n) {}
T load() const { return n; }
};
inline
my_atomic<int>&
a1() {
static thread_local my_atomic<int> v;
return v;
}
inline
my_atomic<int>&
a2() {
static thread_local my_atomic<int> v{0};
return v;
}
int foo() {
return a1().load() + a2().load();
}
//////////////// end example //////////////////////
This compiles to
0000000000000000 <foo()>:
0: 64 80 3c 25 00 00 00 cmpb $0x0,%fs:0x0
7: 00 00
4: R_X86_64_TPOFF32 guard variable for a1()::v
9: 75 09 jne 14 <foo()+0x14>
b: 64 c6 04 25 00 00 00 movb $0x1,%fs:0x0
12: 00 01
f: R_X86_64_TPOFF32 guard variable for a1()::v
14: 64 8b 04 25 00 00 00 mov %fs:0x0,%eax
1b: 00
18: R_X86_64_TPOFF32 a2()::v
1c: 64 03 04 25 00 00 00 add %fs:0x0,%eax
23: 00
20: R_X86_64_TPOFF32 a1()::v
24: c3 retq
The test for "guard variable for a1()::v" is clearly useless, since no
initialization of a1()::v takes place. gcc correctly omits the guard variable
for a2()::v.
>From gcc-bugs-return-548902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 11:46:23 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/78939] [C++17] <tuple> interferes with structured binding from struct
Date: Wed, 28 Dec 2016 11:46:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-28
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |redi at gcc dot gnu.org
Component|c++ |libstdc++
Summary|<tuple> interferes with |[C++17] <tuple> interferes
|structured binding from |with structured binding
|struct |from struct
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is a consequence of the recent P0490R0 GB 20 change and <utility> having:
/// Finds the size of a given tuple type.
template<typename _Tp>
struct tuple_size;
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 2770. tuple_size<const T> specialization is not SFINAE compatible
template<typename _Tp, typename = void>
struct __tuple_size_cv_impl { };
template<typename _Tp>
struct __tuple_size_cv_impl<_Tp,
__void_t<decltype(tuple_size<_Tp>::value)>>
: integral_constant<size_t, tuple_size<_Tp>::value> { };
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 2313. tuple_size should always derive from integral_constant<size_t, N>
template<typename _Tp>
struct tuple_size<const _Tp> : __tuple_size_cv_impl<_Tp> { };
template<typename _Tp>
struct tuple_size<volatile _Tp> : __tuple_size_cv_impl<_Tp> { };
template<typename _Tp>
struct tuple_size<const volatile _Tp> : __tuple_size_cv_impl<_Tp> { };
http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2770
So, either the GB 20 change has been added without considering the effect on
the existing <utility>, or there is some further <utility> change needed, or
libstdc++ doesn't do what the DR requests. But the current DR wording talks
about not having the value member, which is something GB 20 doesn't require any
more.
>From gcc-bugs-return-548903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 12:23:31 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78931] [7 Regression] ICE on C++17 structured bindings from struct with reference member
Date: Wed, 28 Dec 2016 12:23:00 -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 #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40424
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40424&action=edit
gcc7-pr78931.patch
Untested fix.
>From gcc-bugs-return-548904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 12:25:11 2016
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Subject: [Bug c++/78931] [7 Regression] ICE on C++17 structured bindings from struct with reference member
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What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.0
>From gcc-bugs-return-548905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 12:34:57 2016
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Subject: [Bug c++/78931] [7 Regression] ICE on C++17 structured bindings from struct with reference member
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78931
--- Comment #4 from Björn Fahller <gccbugbjorn at fahller dot se> ---
I can confirm that this works with my original program too, and not just the
condensed test case.
>From gcc-bugs-return-548906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 12:43:45 2016
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From: "fmarchal at perso dot be" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/78941] New: Typo in maccumulate-args description
Date: Wed, 28 Dec 2016 12:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78941
Bug ID: 78941
Summary: Typo in maccumulate-args description
Product: gcc
Version: 6.2.0
Status: UNCONFIRMED
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Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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In gcc/config/avr/avr.opt at line 77, the description for maccumulate-args is
maccumulate-args
Target Report Mask(ACCUMULATE_OUTGOING_ARGS)
Accumulate outgoing function arguments and acquire/release the needed stack
space for outpoing function arguments in function prologue/epilogue. Without
this option, outgoing arguments are pushed before calling a function and popped
afterwards. This option can lead to reduced code size for functions that call
many functions that get their arguments on the stack like, for example printf.
Notice the "outpoing" that should very likely be "outgoing".
>From gcc-bugs-return-548907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 13:19:10 2016
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Subject: [Bug translation/78745] Truncated messages in po file
Date: Wed, 28 Dec 2016 13:19:00 -0000
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--- Comment #5 from Frederic Marchal <fmarchal at perso dot be> ---
More truncated lines in gcc/config/s390/s390.opt at lines 116, 178, 195,
>From gcc-bugs-return-548908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 13:32:28 2016
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From: "baradi09 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/78942] New: Incorrect error message for preprocessed source
Date: Wed, 28 Dec 2016 13:32:00 -0000
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Bug ID: 78942
Summary: Incorrect error message for preprocessed source
Product: gcc
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The line number and the code shown in error messages are inconsistent, when
instead of preprocessing a file on the fly (option -cpp) the file is
preprocessed first (-cpp -E) and then compiled with gfortran.
echo 'program F,AIL' > test.F90; gfortran -cpp test.F90
yields the CORRECT error message:
test.F90:1:7:
program F,AIL
1
Error: Invalid form of PROGRAM statement at (1)
While
echo 'program F,AIL' > test.F90; gfortran -cpp -E test.F90 > test.f90; gfortran
test.f90
gives the WRONG error message:
test.f90:1:7:
# 1 "test.F90"
1
Error: Invalid form of PROGRAM statement at (1)
The preprocessed file (test.f90) looks as:
# 1 "test.F90"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.F90"
program F,AIL
which seems to be correct, though.
Actually, the issue can be cured by changing the first line marker to indicate
an include file, as running gfortran on the modified preprocessed source below
gives the correct error message again:
# 1 "test.F90" 1
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.F90"
program F,AIL
Probably the error was introduced in gfortran 5, as the error messages are
consistent in 4.9, but not in 5.1 any more.
This bug may be also related to bug 78792.
>From gcc-bugs-return-548909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 15:17:18 2016
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Subject: [Bug target/78904] zero-extracts are not effective
Date: Wed, 28 Dec 2016 15:17:00 -0000
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--- Comment #13 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Dec 28 15:16:26 2016
New Revision: 243955
URL: https://gcc.gnu.org/viewcvs?rev=243955&root=gcc&view=rev
Log:
PR target/78904
* config/i386/constraints.md (Bn): New special memory constraint.
* config/i386/predicates.md (norex_memory_operand): New predicate.
* config/i386/i386.md (*extzvqi_mem_rex64): New insn pattern and
corresponding peephole2 pattern.
testsuite/ChangeLog:
PR target/78904
* gcc.target/i386/pr78904-4.c: New test.
* gcc.target/i386/pr78904-5.c: Ditto.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr78904-4.c
trunk/gcc/testsuite/gcc.target/i386/pr78904-5.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/constraints.md
trunk/gcc/config/i386/i386.md
trunk/gcc/config/i386/predicates.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 16:10:17 2016
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Subject: [Bug libstdc++/78939] [C++17] <tuple> interferes with structured binding from struct
Date: Wed, 28 Dec 2016 16:10:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think this boils down if
#include <tuple>
struct S { int s; };
std::tuple_size<const S> t;
is valid or not (with <S> instead of <const S> it is invalid).
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 2770. tuple_size<const T> specialization is not SFINAE compatible
template<typename _Tp, typename = void>
- struct __tuple_size_cv_impl { };
+ struct __tuple_size_cv_impl /*{ }*/;
in utility makes it invalid and the decomposition then works fine.
>From gcc-bugs-return-548911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 16:13:26 2016
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Subject: [Bug libstdc++/78939] [C++17] <tuple> interferes with structured binding from struct
Date: Wed, 28 Dec 2016 16:13:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
But that goes against
http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-active.html#2446
So, I think GB 20 is in conflict with LWG2446, we can have just one of those.
>From gcc-bugs-return-548912-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 16:17:10 2016
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From: "fmarchal at perso dot be" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug translation/78745] Truncated messages in po file
Date: Wed, 28 Dec 2016 16:17:00 -0000
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--- Comment #6 from Frederic Marchal <fmarchal at perso dot be> ---
More truncated lines in gcc/config/arm/arm.opt at line 231 and 266,
>From gcc-bugs-return-548913-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 16:48:42 2016
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Subject: [Bug c++/78943] New: Generated assembler fails with symbol is already defined
Date: Wed, 28 Dec 2016 16:48:00 -0000
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Bug ID: 78943
Summary: Generated assembler fails with symbol is already
defined
Product: gcc
Version: 6.3.0
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Created attachment 40425
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40425&action=edit
bmbt.ii
Compiler output:
/tmp/ccYwRjuK.s: Assembler messages:
/tmp/ccYwRjuK.s:696: Error: symbol `_ZN2azlsINS_2bcEhEEvT_T0_' is already
defined
GNU assembler version 2.24 (x86_64-linux-gnu) using BFD version (GNU Binutils
for Ubuntu) 2.24
Reproduce with:
g++-6.3.0 -std=c++14 -Werror -c bmbt.ii
Build configuration:
Using built-in specs.
COLLECT_GCC=g++-6.3.0
COLLECT_LTO_WRAPPER=/home/cfrasch/local/bin/../libexec/gcc/x86_64-linux-gnu/6.3.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../gcc-6.3.0/configure -v --enable-languages=c,c++
--disable-multilib --with-build-config=bootstrap-lto --program-suffix=-6.3.0
--enable-shared --without-included-gettext --enable-threads=posix --enable-nls
--enable-nls --enable-gnu-unique-object --with-system-zlib --enable-multiarch
--disable-werror --with-arch-32=i686 --with-abi=m64 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu --with-pkgversion=Thesys 6.3.0-1 ubuntu 14.04
Thread model: posix
gcc version 6.3.0 (Thesys)
This may be another manifestation of #78908
Thanks
>From gcc-bugs-return-548914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 18:31:36 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug translation/78745] Truncated messages in po file
Date: Wed, 28 Dec 2016 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78745
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 #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40426
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40426&action=edit
gcc7-pr78745.patch
Untested fix.
For the multiple line help texts, opt-gather.awk concatenates those lines with
SUBSEP in between them, and opt-read.awk then replaces those SUBSEP separators
with spaces:
help[n_opts] = $3
for (i = 4; i <= NF; i++)
help[n_opts] = help[n_opts] " " $i
With this patch, there are changes like:
#: config/arm/arm.opt:231
-msgid "Print CPU tuning information as comment in assembler file. This is"
+msgid ""
+"Print CPU tuning information as comment in assembler file. This is an "
+"option used only for regression testing of the compiler and not intended for
"
+"ordinary use in compiling code."
msgstr ""
in the gcc.pot file.
>From gcc-bugs-return-548915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 18:39:33 2016
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Subject: [Bug c/78933] [7 Regression] ICE: in decode_cmdline_option, at opts-common.c:671 with -fno-strong-eval-order
Date: Wed, 28 Dec 2016 18:39:00 -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
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Preapproved.
>From gcc-bugs-return-548916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 19:25:30 2016
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From: "vanyacpp at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug demangler/78944] New: null pointer in demangler
Date: Wed, 28 Dec 2016 19:25:00 -0000
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Bug ID: 78944
Summary: null pointer in demangler
Product: gcc
Version: unknown
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Severity: normal
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Component: demangler
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Demangling the name _Z3fooAv32pM causes null pointer dereferencing:
$ valgrind c++filt _Z3fooAv32pM
==11277== Memcheck, a memory error detector
==11277== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==11277== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==11277== Command: c++filt _Z3fooAv32pM
==11277==
==11277== Invalid read of size 1
==11277== at 0x4F140D9: d_expression_1 (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F13091: cplus_demangle_type (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F13387: d_parmlist (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F137FF: d_bare_function_type (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F14E80: d_encoding (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F1534B: cplus_demangle_mangled_name (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F1597A: d_demangle_callback (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F15AE8: d_demangle (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F15C3D: cplus_demangle_v3 (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x4F07153: cplus_demangle (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/lib/libbfd-2.26.20160125.so)
==11277== by 0x402293: demangle_it (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/bin/c++filt)
==11277== by 0x401F2C: main (in
/nix/store/bxzwd8nb1jjdh9fcqpii4x7r4gl2s8qb-binutils-2.26/bin/c++filt)
==11277== Address 0x0 is not stack'd, malloc'd or (recently) free'd
>From gcc-bugs-return-548917-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 19:26:39 2016
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Subject: [Bug fortran/77785] [Coarray] ICE in gfc_get_caf_token_offset, at fortran/trans-expr.c:1990
Date: Wed, 28 Dec 2016 19:26:00 -0000
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vehre at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #8 from vehre at gcc dot gnu.org ---
No regressions reported, closing.
>From gcc-bugs-return-548918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 19:27:10 2016
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Subject: [Bug fortran/78780] [7 Regression] [Coarray] ICE in conv_caf_send, at fortran/trans-intrinsic.c:1936
Date: Wed, 28 Dec 2016 19:27:00 -0000
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vehre at gcc dot gnu.org changed:
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--- Comment #4 from vehre at gcc dot gnu.org ---
Closing, no regressions reported.
>From gcc-bugs-return-548919-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 19:45:51 2016
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From: "gccbugbjorn at fahller dot se" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/78939] [C++17] <tuple> interferes with structured binding from struct
Date: Wed, 28 Dec 2016 19:45:00 -0000
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--- Comment #4 from Björn Fahller <gccbugbjorn at fahller dot se> ---
It also only partially solves the problem. If the struct is made const, or the
decomposition declaration is changed to "auto const& [p] = s;", it still fails.
>From gcc-bugs-return-548920-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 21:20:56 2016
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Subject: [Bug target/78945] New: [arm
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Bug ID: 78945
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Subject: [Bug target/78945] [arm] libatomic inline asm is not compatible with armv7-m
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nsz at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm-*
--- Comment #1 from nsz at gcc dot gnu.org ---
building a cross compiler with --with-mode=thumb --with-arch=armv7 fails with
/tmp/ccCnEnAK.s:61: Error: selected processor does not support `uadd8 r3,r3,r3'
in Thumb mode
/tmp/ccCnEnAK.s:63: Error: selected processor does not support `sel r3,r1,r4'
in Thumb mode
because the asm in
libatomic/config/arm/exch_n.c
is not compatible with armv7-m.
>From gcc-bugs-return-548922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 21:56:47 2016
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From: "rin at NetBSD dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/71216] [4.9/5/6/7 Regression] Incorrect PPC assembly due to inserted .machine pseudo-op
Date: Wed, 28 Dec 2016 21:56:00 -0000
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--- Comment #11 from Rin Okuyama <rin at NetBSD dot org> ---
Thank you for your response, and sorry for the late reply.
(In reply to Segher Boessenkool from comment #10)
> > > That might or might not work; the user had better know what he is
> > > doing if he uses an assembler option.
> >
> > Hmm, I understand. Is this documented explicitly anywhere?
>
> Not in so many words I think, no.
It would be nice if you could document it somewhere.
> > We use -Wa,-me500 option to compile kernel on some machines. As they
> > share userland with other machines, we cannot configure GCC for a
> > powerpc-*-eabispe* target. Instead, I found a workaround to specify
> > -mcpu=powerpc option. It passes -mppc option to assembler, but as it
> > is preceding to -me500, the latter is prior to the former.
>
> Maybe you could use -mcpu=e500mc or similar? Or, GCC should probably
> have a -mcpu=e500 option, but someone has to write the code for it.
Yeah, I hope so. But that would be another problem.
Let me thanks again for your kind support!
>From gcc-bugs-return-548923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 28 23:27:51 2016
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From: "thomas@maier-komor.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/78946] New: optimization throws internal compiler error for uint64_t on AVR
Date: Wed, 28 Dec 2016 23:27:00 -0000
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Bug ID: 78946
Summary: optimization throws internal compiler error for
uint64_t on AVR
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
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Created attachment 40427
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40427&action=edit
set of testcase files, compile testcase.cc with -O2 to reproduce ICE
The attached code produces for optimization levels -O2 an internal compiler
error while it works without an issue for -Os. this is at least with gcc-4.9.2
and 6.3.0
thomas@glaskugel:~/avr/arduino-mini/sensor1$ /opt/local/bin/avr-g++ --version
avr-g++ (GCC) 6.3.0
Copyright (C) 2016 Free Software Foundation, Inc.
Dies ist freie Software; die Kopierbedingungen stehen in den Quellen. Es
gibt KEINE Garantie; auch nicht für MARKTGÄNGIGKEIT oder FÜR SPEZIELLE ZWECKE.
thomas@glaskugel:~/avr/arduino-mini/sensor1$ /opt/local/bin/avr-g++ -c
-I/usr/lib/avr/include -O2 testcase.cc
testcase.cc: In Elementfunktion »size_t Sensor_AD::fromMemory(const void*,
size_t)«:
testcase.cc:127:1: Fehler: unerkennbarer Befehl:
}
^
(insn 58 57 59 6 (parallel [
(set (reg:HI 84)
(minus:HI (subreg:HI (subreg:SI (reg:DI 81) 0) 0)
(reg:HI 82)))
(clobber (scratch:QI))
]) testcase.cc:74 -1
(nil))
testcase.cc:127:1: interner Compiler-Fehler: in extract_insn, bei recog.c:2287
0xa1abd8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc-6.3.0/gcc/rtl-error.c:108
0xa1ac09 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc-6.3.0/gcc/rtl-error.c:116
0x9f0c99 extract_insn(rtx_insn*)
../../gcc-6.3.0/gcc/recog.c:2287
0x84eb83 instantiate_virtual_regs_in_insn
../../gcc-6.3.0/gcc/function.c:1582
0x84eb83 instantiate_virtual_regs
../../gcc-6.3.0/gcc/function.c:1950
0x84eb83 execute
../../gcc-6.3.0/gcc/function.c:1999
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.
Siehe <http://gcc.gnu.org/bugs.html> für nähere Anweisungen.
thomas@glaskugel:~/avr/arduino-mini/sensor1$ avr-g++ --version
avr-g++ (GCC) 4.9.2
Copyright (C) 2014 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.
thomas@glaskugel:~/avr/arduino-mini/sensor1$ avr-g++ -c -O2 testcase.cc
testcase.cc: In member function ‘size_t Sensor_AD::fromMemory(const void*,
size_t)’:
testcase.cc:127:1: error: unrecognizable insn:
}
^
(insn 58 57 59 6 (parallel [
(set (reg:HI 85)
(minus:HI (subreg:HI (subreg:SI (reg:DI 82) 0) 0)
(reg:HI 83)))
(clobber (scratch:QI))
]) testcase.cc:74 -1
(nil))
testcase.cc:127:1: internal compiler error: in extract_insn, at recog.c:2202
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-548924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 02:53:49 2016
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Subject: [Bug tree-optimization/78947] New: sub-optimal code for (bool)(int ? int : int)
Date: Thu, 29 Dec 2016 02:53:00 -0000
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Bug ID: 78947
Summary: sub-optimal code for (bool)(int ? int : int)
Product: gcc
Version: 6.3.0
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Keywords: missed-optimization
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Target: x86_64-*-*, i?86-*-*
Full version:
http://stackoverflow.com/questions/41323911/why-the-difference-in-code-generation-for-bool-bool-int-int
bool condSet(int cond, int a, int b) {
return cond ? a : b;
}
clang and icc use a cmov to select a or b, and then booleanize that.
g++6.3 -O3 decides to booleanize b, then check the condition and if necessary
booleanize a into %al. This is pretty obviously sub-optimal, even if a branch
is better than a cmov for a predictable condition. (And it differs from what
gcc does if the return type is int)
condSet(int, int, int):
testl %edx, %edx # b
setne %al #, <retval>
testl %edi, %edi # cond
jne .L6 #,
rep ret
.L6:
testl %esi, %esi # a
setne %al #, <retval>
ret
Writing the function as
int foo = cond ? a : b;
return foo;
gets g++ to select an operand with cmov and then booleanize it, like clang does
in the first place (looks optimal to me):
testl %edi, %edi
cmovel %edx, %esi
testl %esi, %esi
setne %al
retq
>From gcc-bugs-return-548925-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 03:44:48 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/78947] sub-optimal code for (bool)(int ? int : int)
Date: Thu, 29 Dec 2016 03:44:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-12-29
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, this is fold-cost folding:
(bool)(a?b:c)
into a ? (bool) b : (bool)c;
early.
Rewriting the code slightly gets the code you wanted:
bool condSet(int cond, int a, int b) {
int c;
c = cond ? a : b;
return c;
}
>From gcc-bugs-return-548926-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 09:38:19 2016
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Subject: [Bug fortran/78781] [7 Regression] [Coarray] ICE in gfc_deallocate_scalar_with_status, at fortran/trans.c:1588
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vehre at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
Assignee|unassigned at gcc dot gnu.org |vehre at gcc dot gnu.org
--- Comment #3 from vehre at gcc dot gnu.org ---
Patch and implementation for pointer components in derived type coarrays
available at:
https://gcc.gnu.org/ml/fortran/2016-12/msg00314.html
Waiting for review.
>From gcc-bugs-return-548927-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 09:54:56 2016
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Subject: [Bug fortran/78935] [7 Regression] ICE on allocating derived type coarray with allocatable components
Date: Thu, 29 Dec 2016 09:54:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Workaround (4) in the original submission is mistakenly redundant.
What is "Workaround (4)"?
> It's an interestingly fragile ICE that disappears with seemingly
> minor changes to the code. For example, it also disappears if
> the first allocation argument is a scalar.
AFAICT the ICE disappears if the two parts are in the same file.
>From gcc-bugs-return-548928-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 10:09:46 2016
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Subject: [Bug c++/78948] New: constexpr if instantiating too eagerly
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78948
Bug ID: 78948
Summary: constexpr if instantiating too eagerly
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rogero at howzatt dot demon.co.uk
Target Milestone: ---
The following code fails to compile:
---- CODE ----
template <int T>
void sizeof_mismatch()
{
static_assert(T == 0, "sizeof mismatch");
}
int main()
{
if constexpr(sizeof(long long) == sizeof(char*))
;
else
sizeof_mismatch<sizeof(long long)>();
}
---- ENDS ----
gcc head 2016-12-19
prog.cc: In instantiation of 'void sizeof_mismatch() [with int T = 8]':
prog.cc:12:40: required from here
prog.cc:4:5: error: static assertion failed: sizeof mismatch
static_assert(T == 0, "sizeof mismatch");
^~~~~~~~~~~~~
However the instantiation of sizeof_mismatch is not required because it is not
odr-used (6.4.1p2 [stmt.if] it is a 'discarded statement')
>From gcc-bugs-return-548929-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 10:13:12 2016
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Subject: [Bug c++/78949] New: incorrect "unused variable" warning with SSE2
Date: Thu, 29 Dec 2016 10:13:00 -0000
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Bug ID: 78949
Summary: incorrect "unused variable" warning with SSE2
Product: gcc
Version: 6.2.0
Status: UNCONFIRMED
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The following program:
typedef unsigned char xmmb_t __attribute__((vector_size(16)));
void f()
{
xmmb_t bla = { };
xmmb_t x = { };
bla &= ~x;
}
yields an "unused variable" warning, although "x" is obviously used.
$ g++ -v -Wunused -c unused.cc
gcc version 6.2.0 (GCC)
unused.cc: In function ‘void f()’:
unused.cc:7:10: warning: variable ‘x’ set but not used
[-Wunused-but-set-variable]
xmmb_t x = { };
>From gcc-bugs-return-548931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 10:36:53 2016
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Subject: [Bug c/78933] [7 Regression] ICE: in decode_cmdline_option, at opts-common.c:671 with -fno-strong-eval-order
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-548930-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 10:36:22 2016
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Subject: [Bug c/78933] [7 Regression] ICE: in decode_cmdline_option, at opts-common.c:671 with -fno-strong-eval-order
Date: Thu, 29 Dec 2016 10:36:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Dec 29 10:35:33 2016
New Revision: 243960
URL: https://gcc.gnu.org/viewcvs?rev=243960&root=gcc&view=rev
Log:
Add RejectNegative for a c option.
PR c/78933
* g++.dg/pr78933.C: New test.
PR c/78933
* c.opt (strong-eval-order): Add RejectNegative keyword.
Added:
trunk/gcc/testsuite/g++.dg/pr78933.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c.opt
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-548932-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 10:46:03 2016
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Subject: [Bug fortran/78892] [7.0 Regression] no type conversion before coarray put
Date: Thu, 29 Dec 2016 10:46:00 -0000
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |vehre at gcc dot gnu.org
--- Comment #1 from vehre at gcc dot gnu.org ---
This bug is invalid, because the responsibility for the type conversion has
been moved to the library. This allows for choosing the smallest datatype
needed for transfering data between images.
Since r211993 code for doing the conversion in the library is in
libgfortran/caf/single.c. Opencoarrays seems to lack the support there.
Opencoarrays works with older versions of gcc, because for scalars the compiler
is doing a type cast. But this of course prevents minimizing the footprint of
data to transfer. IMO this should be fixed in Opencoarrays. The routines for
the type conversion are already present, because the new _by_ref communication
functions already make use of them. Only the old caf_get(), caf_send(), and
caf_sendget() need to be extended.
>From gcc-bugs-return-548933-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 10:48:34 2016
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From: "yannick at tedworld dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78950] New: "confused by earlier errors, bailing out" without previous errors, when having duplicate constexpr
Date: Thu, 29 Dec 2016 10:48:00 -0000
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Bug ID: 78950
Summary: "confused by earlier errors, bailing out" without
previous errors, when having duplicate constexpr
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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When having a duplicate constexpr no error message other than "confused by
earlier errors, bailing out" gets displayed.
Simple example:
$ cat dupconstexpr.cpp
constexpr int test = 1;
constexpr int test = 1;
$ g++ dupconstexpr.cpp
‘
dupconstexpr.cpp:2: confused by earlier errors, bailing out
>From gcc-bugs-return-548934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 11:33:24 2016
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Subject: [Bug c++/78949] incorrect "unused variable" warning with SSE2
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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 #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce, neither with r235033 (before 6.x branchpoint), nor with
current 6.3, nor current trunk.
>From gcc-bugs-return-548935-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 11:38:43 2016
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Subject: [Bug c++/78950] "confused by earlier errors, bailing out" without previous errors, when having duplicate constexpr
Date: Thu, 29 Dec 2016 11:38:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce with 6.3, most likely dup of PR77482.
*** This bug has been marked as a duplicate of bug 77482 ***
>From gcc-bugs-return-548936-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 11:38:43 2016
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Subject: [Bug c++/77482] [6 Regression] Segfault when compiling ill-formed constexpr code
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----------------------------------------------------------------------------
CC| |yannick at tedworld dot de
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 78950 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-548937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 12:22:37 2016
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From: "prathamesh3492 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78949] incorrect "unused variable" warning with SSE2
Date: Thu, 29 Dec 2016 12:22:00 -0000
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prathamesh3492 at gcc dot gnu.org changed:
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CC| |prathamesh3492 at gcc dot gnu.org
--- Comment #2 from prathamesh3492 at gcc dot gnu.org ---
Hi,
I am able to reproduce with r243961.
../stage1-build/gcc/cc1plus -Wunused 78949.c
void f()
78949.c:6:10: warning: variable ‘x’ set but not used
[-Wunused-but-set-variable]
xmmb_t x = { };
However not reproducible with cc1.
Thanks,
Prathamesh
>From gcc-bugs-return-548938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 12:26:11 2016
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/78949] incorrect "unused variable" warning with SSE2
Date: Thu, 29 Dec 2016 12:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-29
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Ever confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, you're right, I've been trying just C. Will have a look.
>From gcc-bugs-return-548939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 12:45:47 2016
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Subject: [Bug c++/78949] incorrect "unused variable" warning with SSE2
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with GCC 4.6.0.
>From gcc-bugs-return-548940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 12:56:17 2016
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Subject: [Bug c++/78949] incorrect "unused variable" warning with SSE2
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40428
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40428&action=edit
gcc7-pr78949.patch
Untested fix.
>From gcc-bugs-return-548941-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 14:31:12 2016
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Subject: [Bug c++/78951] New: Attributes allowed in an incorrect position
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Bug ID: 78951
Summary: Attributes allowed in an incorrect position
Product: gcc
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[dcl.type] specifies in what positions an attribute-specifier-seq may appear
within a type-specifier-seq, which is only at the end of the sequence. GCC
silently accepts attributes in an incorrect position within a
type-specifier-seq.
volatile int *ip = new volatile [[]] int [[]];
The first [[]]] should be diagnosed, the second [[]]] is acceptable.
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Subject: [Bug c++/66735] [C++14] lambda init-capture fails for const references
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Nathan Sidwell <nathan at gcc dot gnu.org> changed:
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--- Comment #4 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
int const x = 5;
void Foo ()
{
auto l = [&rx = x]() {};
}
>From gcc-bugs-return-548945-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 15:42:14 2016
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Subject: [Bug c++/70385] Lambda capture by reference of const reference fails
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Nathan Sidwell <nathan at gcc dot gnu.org> changed:
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--- Comment #3 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Same as 66735, to which I have attached a simpler testcase
*** This bug has been marked as a duplicate of bug 66735 ***
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Subject: [Bug c++/54367] [meta-bug] lambda expressions
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Bug 54367 depends on bug 70385, which changed state.
Bug 70385 Summary: Lambda capture by reference of const reference fails
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70385
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From: "nathan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66735] [C++14] lambda init-capture fails for const references
Date: Thu, 29 Dec 2016 15:42:00 -0000
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Nathan Sidwell <nathan at gcc dot gnu.org> changed:
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--- Comment #5 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
*** Bug 70385 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-548946-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 16:11:06 2016
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From: "vehre at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/78935] [7 Regression] ICE on allocating derived type coarray with allocatable components
Date: Thu, 29 Dec 2016 16:11:00 -0000
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vehre at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #4 from vehre at gcc dot gnu.org ---
Please try again with the patch in:
https://gcc.gnu.org/ml/fortran/2016-12/msg00314.html
applied. On my system I see no issue anymore.
>From gcc-bugs-return-548947-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 16:56:02 2016
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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/78935] [7 Regression] ICE on allocating derived type coarray with allocatable components
Date: Thu, 29 Dec 2016 16:56:00 -0000
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Please try again with the patch in:
>
> https://gcc.gnu.org/ml/fortran/2016-12/msg00314.html
>
> applied. On my system I see no issue anymore.
Same thing here (darwin).
>From gcc-bugs-return-548948-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 21:41:55 2016
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From: "uros at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/78904] zero-extracts are not effective
Date: Thu, 29 Dec 2016 21:41:00 -0000
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--- Comment #14 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Dec 29 21:41:07 2016
New Revision: 243968
URL: https://gcc.gnu.org/viewcvs?rev=243968&root=gcc&view=rev
Log:
PR target/78904
* config/i386/i386.md (*extvqi): Remove insn pattern.
(divmodqi4): Update expander to generate QImode zero-extract from AH.
testsuite/ChangeLog:
PR target/78904
* gcc.target/i386/pr78904-6.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr78904-6.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/70754] [5/6/7 Regression] ICE during predictive commoning
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--- Comment #6 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 40429
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Proposed patch to fix the problem
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Subject: [Bug tree-optimization/70754] [5/6/7 Regression] ICE during predictive commoning
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patch attached to the wrong bug.
>From gcc-bugs-return-548952-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 22:01:56 2016
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Subject: [Bug target/71977] powerpc64: Use VSR when operating on float and integer
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/78952] New: Combine does not convert 8-bit sign-extract to a zero-extract for QImode operations
Date: Thu, 29 Dec 2016 22:12:00 -0000
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Bug ID: 78952
Summary: Combine does not convert 8-bit sign-extract to a
zero-extract for QImode operations
Product: gcc
Version: 7.0
Status: UNCONFIRMED
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Following testcase:
--cut here--
struct S1
{
char pad1;
char val;
short pad2;
};
struct S1 test_add (struct S1 a, struct S1 b)
{
a.val += b.val;
return a;
}
--cut here--
genereates unoptimal code on x86_64, since combine doesn't convert sign-extract
in
Trying 7, 9 -> 10:
Failed to match this instruction:
(set (zero_extract:SI (reg/v:SI 95 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(subreg:SI (plus:QI (subreg:QI (sign_extract:SI (reg/v:SI 95 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
(reg:QI 98)) 0))
to a zero-extract, as is the case in a similar testcase:
--cut here--
typedef __SIZE_TYPE__ size_t;
struct S1
{
char pad1;
char val;
short pad2;
};
extern char t[256];
void foo (struct S1 a, size_t i)
{
t[i] = a.val;
}
--cut here--
where:
(insn 8 4 9 2 (set (reg:SI 91)
(sign_extract:SI (reg/v:SI 88 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8]))) "pr78904-6.c":18 102 {*extvsi}
(expr_list:REG_DEAD (reg/v:SI 88 [ a ])
(nil)))
(insn 9 8 0 2 (set (mem/j:QI (plus:DI (reg/v:DI 89 [ i ])
(symbol_ref:DI ("t") [flags 0x40] <var_decl 0x7f9e35cd4e10
t>)) [0 t S1 A8])
(subreg:QI (reg:SI 91) 0)) "pr78904-6.c":18 84 {*movqi_internal}
(expr_list:REG_DEAD (reg:SI 91)
(expr_list:REG_DEAD (reg/v:DI 89 [ i ])
(nil))))
gets simplified to:
Trying 8 -> 9:
Successfully matched this instruction:
(set (mem/j:QI (plus:DI (reg/v:DI 89 [ i ])
(symbol_ref:DI ("t") [flags 0x40] <var_decl 0x7f9e35cd4e10 t>)) [0
t S1 A8])
(subreg:QI (zero_extract:SI (reg/v:SI 88 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0))
Please note that in both cases, we have QImode operation with 8-bit (QImode)
extracted value. Sign-extracts to a QImode value are nonsensical in both cases,
but only in the former case are converted to a zero-extract.
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Subject: [Bug target/78953] New: Errors in compiling Spec 2006 for power9
Date: Thu, 29 Dec 2016 22:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78953
Bug ID: 78953
Summary: Errors in compiling Spec 2006 for power9
Product: gcc
Version: 7.0
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Priority: P3
Component: target
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Two of the spec 2006 benchmarks (gamess and calculix) get errors when compiled
by recent trunk compilers with -mcpu=power9:
Error in gamess:
Error: insn does not satisfy its constraints:
(insn 8520 8519 8521 96 (parallel [
(set (reg:SI 4 4 [4221])
(vec_select:SI (reg:V4SI 43 11 [orig:586 vect__86.1681 ] [586])
(parallel [
(const_int 1 [0x1])
])))
(clobber (reg:SI 29 29 [4222]))
]) "loccd.fppized.f":379 1184 {vsx_extract_v4si_p9}
(expr_list:REG_UNUSED (reg:SI 29 29 [4222])
(nil)))
loccd.fppized.f:564:0: internal compiler error: in extract_constrain_insn, at
recog.c:2213
Error in calculix:
SPOOLES/MSMD/src/MSMD_init.c: In function 'MSMD_init':
SPOOLES/MSMD/src/MSMD_init.c:161:1: error: insn does not satisfy its
constraints:
return ; }
^~~~~~
(insn 2674 2673 2675 37 (parallel [
(set (reg:SI 0 0 [985])
(vec_select:SI (reg:V4SI 32 0 [orig:378 vect__50.42 ] [378])
(parallel [
(const_int 1 [0x1])
])))
(clobber (reg:SI 31 31 [986]))
]) "SPOOLES/MSMD/src/MSMD_init.c":113 1184 {vsx_extract_v4si_p9}
(expr_list:REG_UNUSED (reg:SI 31 31 [986])
(nil)))
>From gcc-bugs-return-548955-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 22:50:15 2016
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Subject: [Bug target/78953] Errors in compiling Spec 2006 for power9
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-29
CC| |dje at gcc dot gnu.org,
| |segher at gcc dot gnu.org,
| |wschmidt at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |meissner at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
A quick glance at the code, shows that the V4SImode register is a traditional
floating point register, but the splitter for vsx_extract_<mode>_p9 requires
the register to be a traditional altivec register.
I suspect vsx_extract_v4si_p9 is called from vsx_extract_si. The later has a
constraint (wJ) that allows the operand to go in traditional floating registers
in addition to Altivec registers (v).
>From gcc-bugs-return-548956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 23:27:59 2016
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Subject: [Bug demangler/78944] null pointer in demangler
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--- Comment #1 from Ivan Sorokin <vanyacpp at gmail dot com> ---
In addition to the reported crash on _Z3fooAv32pM, there are two other seeming
unrelated crashes: _Z1f7729646840 and _Z1fDpDF02s4o.
>From gcc-bugs-return-548957-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 29 23:37:53 2016
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Subject: [Bug rtl-optimization/78952] Combine does not convert 8-bit sign-extract to a zero-extract for QImode operations
Date: Thu, 29 Dec 2016 23:37:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Add CC.
>From gcc-bugs-return-548958-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 00:11:29 2016
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Subject: [Bug c++/78890] [5/6/7 Regression] ICE on invalid reference type in union
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--- Comment #3 from TC <rs2740 at gmail dot com> ---
[class.union]/3 in the current WP (/2 in N3337/N4140) says (among other
things):
If a union contains a non-static data member of reference type the program is
ill-formed.
>From gcc-bugs-return-548959-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 05:14:18 2016
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Subject: [Bug fortran/78935] [7 Regression] ICE on allocating derived type coarray with allocatable components
Date: Fri, 30 Dec 2016 05:14:00 -0000
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--- Comment #6 from Damian Rouson <damian at sourceryinstitute dot org> ---
Workaround (4) was supposed to be "when both allocations are moved into the
main program."
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Subject: [Bug rtl-optimization/78952] Combine does not convert 8-bit sign-extract to a zero-extract for QImode operations
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Another testcase:
--cut here--
extern void foo (void);
extern void bar (void);
struct S1
{
char pad1;
char val;
short pad2;
};
void test (struct S1 a)
{
if (a.val)
foo ();
else
bar ();
}
--cut here--
Trying 6 -> 7:
Failed to match this instruction:
(set (reg:CCZ 17 flags)
(compare:CCZ (subreg:QI (sign_extract:SI (reg/v:SI 88 [ a ])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
(const_int 0 [0])))
This pattern should match:
(define_insn "*cmpqi_ext_2"
[(set (reg FLAGS_REG)
(compare
(subreg:QI
(zero_extract:SI
(match_operand 0 "ext_register_operand" "Q")
(const_int 8)
(const_int 8)) 0)
(match_operand:QI 1 "const0_operand")))]
"ix86_match_ccmode (insn, CCNOmode)"
"test{b}\t%h0, %h0"
[(set_attr "type" "test")
(set_attr "length_immediate" "0")
(set_attr "mode" "QI")])
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Subject: [Bug other/65530] [meta-bug] -mmpx -fcheck-pointer-bounds failures
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Bug 65530 depends on bug 63994, which changed state.
Bug 63994 Summary: Ada bootstrap fails with -fcheck-pointer-bounds -mmpx
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63994
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----------------------------------------------------------------------------
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
.
>From gcc-bugs-return-548963-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 09:11:40 2016
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Subject: [Bug target/78954] New: optimization: broadcast of non-constant scalar into SSE2 register
Date: Fri, 30 Dec 2016 09:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78954
Bug ID: 78954
Summary: optimization: broadcast of non-constant scalar into
SSE2 register
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The following code goes through the stack instead of directly moving from the
register for "x" into (the low part of) "v":
#pragma GCC target ("sse2")
typedef unsigned int V __attribute__((vector_size(16)));
V f(int x)
{
V v = { x, x, x, x };
return v;
}
$ gcc -v -O3 -S x.cc
Target: x86_64-pc-linux-gnu
gcc version 6.3.0 (GCC)
snippet from assembly:
movl %edi, -12(%rsp)
movd -12(%rsp), %xmm1
pshufd $0, %xmm1, %xmm0
ret
Why do we move through the stack, instead of using a simple register move?
movd %edi, %xmm1
pshufd $0, %xmm1, %xmm0
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Subject: [Bug target/78954] optimization: broadcast of non-constant scalar into SSE2 register
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Try -mcpu=intel . IIRC some AMD processors perform worse when going directly
from the gprs here.
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Subject: [Bug target/78954] optimization: broadcast of non-constant scalar into SSE2 register
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That depends on which CPU you tune for.
E.g. with -mtune=intel or -mtune=core2 etc. you get what you are asking for,
-mtune=generic takes into account that the movd %edi, %xmm1 insn is very
slow on some AMD CPUs and because moving through stack isn't that slower on
Intel CPUs, it is a compromise between those tunings.
/* X86_TUNE_INTER_UNIT_MOVES_TO_VEC: Enable moves in from integer
to SSE registers. If disabled, the moves will be done by storing
the value to memory and reloading. */
DEF_TUNE (X86_TUNE_INTER_UNIT_MOVES_TO_VEC, "inter_unit_moves_to_vec",
~(m_AMD_MULTIPLE | m_GENERIC))
/* X86_TUNE_INTER_UNIT_MOVES_TO_VEC: Enable moves in from SSE
to integer registers. If disabled, the moves will be done by storing
the value to memory and reloading. */
DEF_TUNE (X86_TUNE_INTER_UNIT_MOVES_FROM_VEC, "inter_unit_moves_from_vec",
~m_ATHLON_K8)
where
#define m_AMD_MULTIPLE (m_ATHLON_K8 | m_AMDFAM10 | m_BDVER | m_BTVER \
| m_ZNVER1)
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Subject: [Bug target/78954] optimization: broadcast of non-constant scalar into SSE2 register
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--- Comment #3 from Jens Maurer <jens.maurer at gmx dot net> ---
Ok, thanks. So, this essentially says most/all AMD CPUs have bad general-reg
-> xmm move performance. Oh well.
Please close.
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Subject: [Bug target/78954] optimization: broadcast of non-constant scalar into SSE2 register
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
.
>From gcc-bugs-return-548968-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 14:08:49 2016
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Subject: [Bug fortran/71880] pointer to allocatable character
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
When compiled with '-m64 -fsanitize=address' the test give at run time
=================================================================
==81688==ERROR: AddressSanitizer: negative-size-param: (size=-1)
#0 0x10f4d9b3b in wrap_memmove (/opt/gcc/gcc7a/lib/libasan.4.dylib+0x41b3b)
#1 0x10f3e0032 in list_formatted_write_scalar
(/opt/gcc/gcc7a/lib/libgfortran.4.dylib+0x142032)
0x602000000150 is located 0 bytes inside of 10-byte region
[0x602000000150,0x60200000015a)
allocated by thread T0 here:
#0 0x10f4fa96d in wrap_malloc (/opt/gcc/gcc7a/lib/libasan.4.dylib+0x6296d)
#1 0x10f29b10d in MAIN__
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x10000110d)
#2 0x10f29b956 in main
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100001956)
#3 0x7fff94598254 in start (/usr/lib/system/libdyld.dylib+0x5254)
SUMMARY: AddressSanitizer: negative-size-param
(/opt/gcc/gcc7a/lib/libasan.4.dylib+0x41b3b) in wrap_memmove
==81688==ABORTING
Program received signal SIGABRT: Process abort signal.
Backtrace for this error:
#0 0x10f2a0979
#1 0x10f29fd13
#2 0x7fff947a5bb9
Abort
When compiled with '-m32 -fsanitize=address' they give
ASAN:DEADLYSIGNAL
=================================================================
==75073==ERROR: AddressSanitizer: SEGV on unknown address 0x24000000 (pc
0x00357260 bp 0x00000002 sp 0xbfffba20 T0)
#0 0x35725f in __sanitizer::mem_is_zero(char const*, unsigned long)
(/opt/gcc/gcc7a/lib/i386/libasan.4.dylib+0x8425f)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
(/opt/gcc/gcc7a/lib/i386/libasan.4.dylib+0x8425f) in
__sanitizer::mem_is_zero(char const*, unsigned long)
==75073==ABORTING
Program received signal SIGABRT: Process abort signal.
Backtrace for this error:
#0 0xf124f
#1 0xf05be
#2 0x9f98beba
Abort
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Subject: [Bug translation/78745] Truncated messages in po file
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Dec 30 19:15:42 2016
New Revision: 243981
URL: https://gcc.gnu.org/viewcvs?rev=243981&root=gcc&view=rev
Log:
PR translation/78745
* exgettext: Handle multi-line help texts in *.opt files.
* gcc.pot: Regenerate.
Modified:
trunk/gcc/po/ChangeLog
trunk/gcc/po/exgettext
trunk/gcc/po/gcc.pot
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Dec 30 19:18:25 2016
New Revision: 243982
URL: https://gcc.gnu.org/viewcvs?rev=243982&root=gcc&view=rev
Log:
PR translation/78745
* exgettext: Handle multi-line help texts in *.opt files.
* gcc.pot: Regenerate.
Modified:
branches/gcc-6-branch/gcc/po/ChangeLog
branches/gcc-6-branch/gcc/po/exgettext
branches/gcc-6-branch/gcc/po/gcc.pot
>From gcc-bugs-return-548971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 19:22:07 2016
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Subject: [Bug translation/78745] Truncated messages in po file
Date: Fri, 30 Dec 2016 19:22:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Dec 30 19:21:22 2016
New Revision: 243983
URL: https://gcc.gnu.org/viewcvs?rev=243983&root=gcc&view=rev
Log:
PR translation/78745
* exgettext: Handle multi-line help texts in *.opt files.
* gcc.pot: Regenerate.
Modified:
branches/gcc-5-branch/gcc/po/ChangeLog
branches/gcc-5-branch/gcc/po/exgettext
branches/gcc-5-branch/gcc/po/gcc.pot
>From gcc-bugs-return-548972-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 19:24:30 2016
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Subject: [Bug translation/78745] Truncated messages in po file
Date: Fri, 30 Dec 2016 19:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |jsm28 at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk and release branches, gcc.pot regenerated, but I haven't
submitted it to the translation project, will defer that to Joseph.
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Subject: [Bug target/78900] ICE in gcc.target/powerpc/signbit-3.c
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Michael Meissner <meissner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-548974-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 20:57:41 2016
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Subject: [Bug target/78900] ICE in gcc.target/powerpc/signbit-3.c
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--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 40432
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40432&action=edit
Proposed patch to fix the problem
>From gcc-bugs-return-548975-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 23:10:54 2016
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/71880] pointer to allocatable character
Date: Fri, 30 Dec 2016 23:10:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
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----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
For a minor variant with NULLified p I get an ICE with trunk:
program t
character(:), dimension(:), allocatable, target :: c
character(:), dimension(:), pointer :: p => NULL()
allocate(c(10),source='X')
p=>c
end program t
% gfc-trunk -c pr71880.f90
pr71880.f90:1:0:
program t
internal compiler error: in gfc_get_symbol_decl, at fortran/trans-decl.c:1738
0x838f263 gfc_get_symbol_decl(gfc_symbol*)
../../trunk/gcc/fortran/trans-decl.c:1738
0x838f9b7 generate_local_decl
../../trunk/gcc/fortran/trans-decl.c:5356
0x8341e23 do_traverse_symtree
../../trunk/gcc/fortran/symbol.c:3986
0x83934c8 generate_local_vars
../../trunk/gcc/fortran/trans-decl.c:5556
0x83934c8 gfc_generate_function_code(gfc_namespace*)
../../trunk/gcc/fortran/trans-decl.c:6220
0x8312713 translate_all_program_units
../../trunk/gcc/fortran/parse.c:6008
0x8312713 gfc_parse_file()
../../trunk/gcc/fortran/parse.c:6208
0x8357ea5 gfc_be_parse_file
../../trunk/gcc/fortran/f95-lang.c:202
>From gcc-bugs-return-548976-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Dec 30 23:43:52 2016
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From: "jerry.c.t at web dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/77528] std::queue default constructor unnecessarily creates temporary of underlying Container
Date: Fri, 30 Dec 2016 23:43:00 -0000
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jerryct <jerry.c.t at web dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jerry.c.t at web dot de
--- Comment #4 from jerryct <jerry.c.t at web dot de> ---
Hi,
i would like to add another issue besides the number of allocations. I am using
special containers which have fixed size and don't use dynamic memory
allocation at all. Thus for example we use a static_vector<T, max_size>. The
container can get rather big, e.g., 4 mega byte. Using std::stack from
libstdc++ with this container produces a stack overflow in the constructor,
because of this temporary. Running the same code with libcxx does not produce
this error - it does not use such a temporary in the constructor.
Thus a constructor like libcxx has:
_LIBCPP_INLINE_VISIBILITY
stack()
_NOEXCEPT_(is_nothrow_default_constructible<container_type>::value)
: c() {}
would solve two problems:
- reduce the number of allocations
- make container adapaters usable for rather big containers.
jerry
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From: "webrown.cpp at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/78955] New: [c++ concepts] Concept requirements on functions cancels the private section method check in the following code
Date: Sat, 31 Dec 2016 04:29:00 -0000
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Bug ID: 78955
Summary: [c++ concepts] Concept requirements on functions
cancels the private section method check in the
following code
Product: gcc
Version: c++-concepts
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Reporter: sergstrukovlink at gmail dot com
CC: webrown.cpp at gmail dot com
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CC: webrown.cpp at gmail dot com
See the attached code example.
Checked on https://gcc.godbolt.org with gcc-6.2.0 , gcc-6.3.0 anf gcc-7.0.0.
Options: -std=c++1z -fconcepts .
>From gcc-bugs-return-548978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 05:30:13 2016
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Subject: [Bug libobjc/78698] [7 regression] Using static PIC libgc fails when it has dependencies
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--- Comment #4 from Matthias Klose <doko at gcc dot gnu.org> ---
patch posted at
https://gcc.gnu.org/ml/gcc-patches/2016-12/msg02004.html
>From gcc-bugs-return-548979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 05:33:35 2016
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From: "doko at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libobjc/78697] --with-target-bdw-gc-include shouldn't be required to be per multilib
Date: Sat, 31 Dec 2016 05:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78697
--- Comment #2 from Matthias Klose <doko at gcc dot gnu.org> ---
patch posted at
https://gcc.gnu.org/ml/gcc-patches/2016-12/msg02003.html
>From gcc-bugs-return-548980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 13:14:41 2016
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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++/78956] New: std::thread doesn't fully meet LWG 2097 requirement
Date: Sat, 31 Dec 2016 13:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78956
Bug ID: 78956
Summary: std::thread doesn't fully meet LWG 2097 requirement
Product: gcc
Version: unknown
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Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
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#include <thread>
static_assert( !std::is_constructible_v<std::thread, const std::thread> );
This assertion should pass according to LWG 2097. We only get it right for
lvalues and non-const rvalues.
We also need:
thread(const thread&&) = delete;
>From gcc-bugs-return-548981-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 16:14:06 2016
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Subject: [Bug driver/78957] New: ICE: SIGSEGV with -fno-sso-struct=web
Date: Sat, 31 Dec 2016 16:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78957
Bug ID: 78957
Summary: ICE: SIGSEGV with -fno-sso-struct=web
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: driver
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Likely similar to PR78933
Compiler output:
$ valgrind x86_64-pc-linux-gnu-gcc /dev/null -o /dev/null -fno-sso-struct=web
==24593== Invalid read of size 8
==24593== at 0x51972C: pp_format(pretty_printer*, text_info*)
(pretty-print.c:317)
==24593== by 0x4DEF55: diagnostic_report_diagnostic(diagnostic_context*,
diagnostic_info*) (diagnostic.c:961)
==24593== by 0x4E1B78: diagnostic_impl (diagnostic.c:1084)
==24593== by 0x4E1B78: internal_error(char const*, ...) (diagnostic.c:1395)
==24593== by 0x4DD13B: fancy_abort(char const*, int, char const*)
(diagnostic.c:1461)
==24593== by 0x496AD7: decode_cmdline_option (opts-common.c:671)
==24593== by 0x496AD7: decode_cmdline_options_to_array(unsigned int, char
const**, unsigned int, cl_decoded_option**, unsigned int*) (opts-common.c:836)
==24593== by 0x4034FF: driver::main(int, char**) (gcc.c:7209)
==24593== by 0x4039BB: main (gcc-main.c:46)
==24593== Address 0x8 is not stack'd, malloc'd or (recently) free'd
>From gcc-bugs-return-548982-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 20:00:29 2016
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/78958] New: FAIL: gfortran.dg/alloc_comp_class_5.f03 - Segmentation fault
Date: Sat, 31 Dec 2016 20:00:00 -0000
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Bug ID: 78958
Summary: FAIL: gfortran.dg/alloc_comp_class_5.f03 -
Segmentation fault
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
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Target Milestone: ---
Host: hppa64-hp-hpux11.11
Target: hppa64-hp-hpux11.11
Build: hppa64-hp-hpux11.11
spawn /test/gnu/gcc/objdir/gcc/testsuite/gfortran/../../gfortran
-B/test/gnu/gcc
/objdir/gcc/testsuite/gfortran/../../
-B/test/gnu/gcc/objdir/hppa64-hp-hpux11.11
/./libgfortran/
/test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/alloc_comp_class_5.f
03 -fno-diagnostics-show-caret -fdiagnostics-color=never -O0 -pedantic-errors
-B
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgfortran/.libs
-L/test/gnu/gcc/obj
dir/hppa64-hp-hpux11.11/./libgfortran/.libs
-L/test/gnu/gcc/objdir/hppa64-hp-hpu
x11.11/./libgfortran/.libs
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libatomic/.libs
-B/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs -lm -o
./alloc_comp_class_5.exePASS: gfortran.dg/alloc_comp_class_5.f03 -O0 (test
for excess errors)Setting LD_LIBRARY_PATH to
.:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgfortran/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgfortran/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libatomic/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs:/test/gnu/gcc/objdir/gcc:.:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgfortran/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgfortran/.libs
:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libatomic/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libquadmath/.libs:/test/gnu/gcc/objdir/gccspawn
[open ...]Program received signal SIGSEGV: Segmentation fault - invalid memory
reference.
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program:
/test/gnu/gcc/objdir/gcc/testsuite/gfortran/alloc_comp_class_5.exe
Program received signal SIGSEGV, Segmentation fault.
0x800003fffdd7d264 in ?? () from /lib/pa20_64/libc.2
(gdb) bt
#0 0x800003fffdd7d264 in ?? () from /lib/pa20_64/libc.2
#1 0x800003fffdd7ff38 in free () from /lib/pa20_64/libc.2
#2 0x4000000000006018 in array_list::add_item (
a=<error reading variable: Cannot access memory at address 0x148>,
e=<error reading variable: Cannot access memory at address 0x150>)
at /test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/alloc_comp_class_5.f03:28
Breakpoint 2, 0x800003fffdd7fc08 in free () from /lib/pa20_64/libc.2
(gdb) bt
#0 0x800003fffdd7fc08 in free () from /lib/pa20_64/libc.2
#1 0x4000000000006018 in array_list::add_item (
a=<error reading variable: Cannot access memory at address 0x3>,
e=<error reading variable: Cannot access memory at address 0xb>)
at /test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/alloc_comp_class_5.f03:28
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) p/x $r26
$3 = 0x800000010000b280
It looks like this address wasn't allocated or previously freed.
>From gcc-bugs-return-548983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 20:06:38 2016
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Subject: [Bug tree-optimization/77318] [7 regression] FAIL: gfortran.dg/graphite/pr68279.f90 -O (internal compiler error)
Date: Sat, 31 Dec 2016 20:06:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |danglin at gcc dot gnu.org
--- Comment #8 from John David Anglin <danglin at gcc dot gnu.org> ---
Also seen on hppa64-hp-hpux11.11.
>From gcc-bugs-return-548984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 20:20:33 2016
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Subject: [Bug middle-end/78959] New: FAIL: gcc.c-torture/execute/pr78622.c
Date: Sat, 31 Dec 2016 20:20:00 -0000
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Bug ID: 78959
Summary: FAIL: gcc.c-torture/execute/pr78622.c
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
CC: msebor at gcc dot gnu.org
Target Milestone: ---
Host: hppa64-hp-hpux11.11
Target: hppa64-hp-hpux11.11
Build: hppa64-hp-hpux11.11
spawn /test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
/test/gnu/gcc/gcc/gcc/testsuite/gcc.c-torture/execute/pr78622.c
-fno-diagnostics-show-caret -fdi
agnostics-color=never -O0 -w -Wformat-length=2 -lm -o ./pr78622.exe
PASS: gcc.c-torture/execute/pr78622.c -O0 (test for excess errors)
Setting LD_LIBRARY_PATH to :/test/gnu/gcc/objdir/gcc::/test/gnu/gcc/objdir/gcc
spawn [open ...]
"4105" => 4
FAIL: gcc.c-torture/execute/pr78622.c -O0 execution test
Fails at all optimizations.
>From gcc-bugs-return-548985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 20:48:58 2016
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Subject: [Bug middle-end/78960] New: FAIL: gcc.dg/tree-ssa/builtin-sprintf.c execution test
Date: Sat, 31 Dec 2016 20:48:00 -0000
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Bug ID: 78960
Summary: FAIL: gcc.dg/tree-ssa/builtin-sprintf.c execution test
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
Host: hppa64-hp-hpux11.11
Target: hppa64-hp-hpux11.11
Build: hppa64-hp-hpux11.11
Executing on host: /test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -ansi -pedantic-errors
-O2 -Wall -Wno-pedantic -fprintf-return-value -lm -o ./builtin-sprintf.exe
(timeout = 300)
spawn /test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -ansi -pedantic-errors
-O2 -Wall -Wno-pedantic -fprintf-return-value -lm -o ./builtin-sprintf.exe
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c: In function
'test_d_i':
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c:304:20:
warning: '0' flag ignored with precision and '%i' gnu_printf format [-Wformat=]
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c:125:44: note:
in definition of macro 'RNG'
output is:
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c: In function
'test_d_i':
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c:304:20:
warning: '0' flag ignored with precision and '%i' gnu_printf format [-Wformat=]
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c:125:44: note:
in definition of macro 'RNG'
PASS: gcc.dg/tree-ssa/builtin-sprintf.c (test for warnings, line 304)
PASS: gcc.dg/tree-ssa/builtin-sprintf.c (test for excess errors)
Setting LD_LIBRARY_PATH to
:/test/gnu/gcc/objdir/gcc:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libatomic/.libs::/test/gnu/gcc/objdir/gcc:/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libatomic/.libs
spawn [open ...]
PASS: test_c:137: "%c" result 1: "?"
PASS: test_c:138: "%c" result 1: "?"
PASS: test_c:139: "%1c" result 1: "?"
PASS: test_c:140: "%1c" result 1: "?"
PASS: test_c:141: "%*c" result 1: "?"
PASS: test_c:142: "%*c" result 1: "?"
PASS: test_c:143: "%c%c" result 2: "12"
PASS: test_c:144: "%c%c" result 2: "12"
PASS: test_c:145: "%3c" result 3: " ?"
PASS: test_c:146: "%3c" result 3: " ?"
PASS: test_c:147: "%*c" result 3: " ?"
PASS: test_c:148: "%*c" result 3: " ?"
PASS: test_c:150: "%*c%*c" result 3: " ??"
PASS: test_c:151: "%*c%*c" result 3: "? ?"
PASS: test_c:152: "%c%c%c" result 3: "123"
PASS: test_c:153: "%*c%c%c" result 3: "123"
PASS: test_c:154: "%*c%*c%c" result 3: "123"
PASS: test_c:155: "%*c%*c%*c" result 3: "123"
PASS: test_c:157: "%*c%*c" result 3: " ??"
PASS: test_c:158: "%*c%*c" result 3: "? ?"
PASS: test_c:159: "%c%c%c" result 3: "123"
PASS: test_c:160: "%*c%c%c" result 3: "123"
PASS: test_c:161: "%*c%*c%c" result 3: "123"
PASS: test_c:162: "%*c%*c%*c" result 3: "123"
PASS: test_c:164: "%c%c %c" result 4: "12 3"
PASS: test_c:165: "%c %c %c" result 5: "1 2 3"
PASS: test_c:166: "%c %c %c" result 5: "? ? ?"
PASS: test_d_i:220: "%d" result 1: "0"
PASS: test_d_i:221: "%d%d" result 2: "01"
PASS: test_d_i:222: "%d%d" result 3: "910"
PASS: test_d_i:223: "%d%d" result 4: "1112"
PASS: test_d_i:224: "%d:%d" result 5: "12:34"
PASS: test_d_i:225: "%d" result 5: "12345"
PASS: test_d_i:226: "%d" result 6: "-12345"
PASS: test_d_i:227: "%d:%d:%d:%d" result 15: "123:124:125:126"
PASS: test_d_i:229: "%i" result 1: "0"
PASS: test_d_i:230: "%i" result 1: "0"
PASS: test_d_i:248: "%11d" result 11: " -559038737"
PASS: test_d_i:249: "%+11d" result 11: " -559038737"
PASS: test_d_i:250: "%-11d" result 11: "-559038737 "
PASS: test_d_i:251: "%011d" result 11: "-0559038737"
PASS: test_d_i:270: "%20ld" result 20: " 3735928559"
PASS: test_d_i:271: "%+20ld" result 20: " +3735928559"
PASS: test_d_i:272: "%-20ld" result 20: "3735928559 "
PASS: test_d_i:273: "%020ld" result 20: "00000000003735928559"
FAIL: test_d_i:287: "%hhi" expected result for "-16657" doesn't match function
call return value: 6 not in [1, 4]
FAIL: test_d_i:288: "%hhu" expected result for "48879" doesn't match function
call return value: 5 not in [1, 3]
PASS: test_d_i:290: "%hhi" result 4: "-128"
PASS: test_d_i:291: "%hhi" result 4: "-128"
PASS: test_d_i:292: "%hhi" result 4: "-128"
PASS: test_d_i:294: "%1hhi" result 4: "-128"
PASS: test_d_i:295: "%2hhi" result 4: "-128"
PASS: test_d_i:296: "%3hhi" result 4: "-128"
PASS: test_d_i:297: "%4hhi" result 4: "-128"
PASS: test_d_i:298: "%5hhi" result 5: " -128"
PASS: test_d_i:299: "%6hhi" result 6: " -128"
PASS: test_d_i:300: "%6hhi" result 6: " -128"
PASS: test_d_i:302: "%.hhi" result 0: ""
PASS: test_d_i:303: "%.0hhi" result 0: ""
PASS: test_d_i:304: "%0.0hhi" result 0: ""
PASS: test_d_i:305: "%*.0hhi" result 0: ""
FAIL: test_d_i:307: "%hhi" expected result for "1024" doesn't match output
length: 4 not in [1, 2]
PASS: test_d_i:308: "%hhi" result 4: "1024"
FAIL: test_d_i:309: "%hhi" expected result for "1034" doesn't match output
length: 4 not in [2, 3]
FAIL: test_d_i:311: "%hhu" expected result for "1024" doesn't match output
length: 4 not in [1, 2]
FAIL: test_d_i:312: "%hhu" expected result for "1024" doesn't match output
length: 4 not in [1, 3]
FAIL: test_d_i:313: "%hhu" expected result for "1034" doesn't match output
length: 4 not in [2, 3]
PASS: test_d_i:316: "%hi" result 6: "-16657"
PASS: test_d_i:317: "%hu" result 5: "48879"
PASS: test_d_i:328: "%i" result 10: "-559038737"
PASS: test_d_i:329: "%u" result 10: "3735928559"
PASS: test_d_i:339: "%li" result 10: "3735928559"
PASS: test_d_i:340: "%lu" result 10: "3735928559"
PASS: test_x:347: "%hhx" result 1: "0"
PASS: test_x:348: "%2hhx" result 2: " 0"
PASS: test_x:349: "%02hhx" result 2: "00"
PASS: test_x:350: "%#02hhx" result 2: "00"
PASS: test_x:352: "%hhx" result 1: "1"
PASS: test_x:353: "%2hhx" result 2: " 1"
PASS: test_x:354: "%02hhx" result 2: "01"
PASS: test_x:355: "%#02hhx" result 3: "0x1"
PASS: test_x:357: "%2hhx" result 2: "3f"
PASS: test_x:358: "%02hhx" result 2: "3f"
PASS: test_x:359: "%#05hhx" result 5: "0x03f"
FAIL: test_x:361: "%2hhx" expected result for "dead" doesn't match function
call return value: 4 != 2
FAIL: test_x:362: "%02hhx" expected result for "dead" doesn't match function
call return value: 4 != 2
FAIL: test_x:363: "%#05hhx" expected result for "0xdead" doesn't match function
call return value: 6 != 5
FAIL: test_x:365: "%2hhx" expected result for "beef" doesn't match function
call return value: 4 != 2
FAIL: test_x:366: "%02hhx" expected result for "beef" doesn't match function
call return value: 4 != 2
FAIL: test_x:367: "%#05hhx" expected result for "0xbeef" doesn't match function
call return value: 6 != 5
PASS: test_x:369: "%x" result 1: "0"
PASS: test_x:370: "%#x" result 1: "0"
PASS: test_x:371: "%#0x" result 1: "0"
PASS: test_x:372: "%x" result 1: "1"
PASS: test_x:373: "%x" result 1: "f"
PASS: test_x:374: "%x" result 2: "10"
PASS: test_x:375: "%x" result 2: "ff"
PASS: test_x:376: "%x" result 3: "100"
PASS: test_x:378: "%02x:%02x:%02x:%02x" result 11: "de:ad:be:ef"
PASS: test_x:387: "%02hhx:%02hhx:%02hhx:%02hhx" result 11: "3f:3f:3f:3f"
PASS: test_x:390: "%04hx" result 4: "dead"
PASS: test_x:391: "%04hx:%04hx" result 9: "dead:dead"
PASS: test_x:392: "%04hx:%04hx:%04hx" result 14: "dead:dead:dead"
PASS: test_x:393: "%04hx:%04hx:%04hx:%04hx" result 19: "dead:dead:dead:dead"
PASS: test_x:400: "%08x" result 8: "deadbeef"
PASS: test_x:401: "%#010x" result 10: "0xdeadbeef"
FAIL: test_a_double:411: "%.0a" expected result for "a" doesn't match function
call return value: 1 != 6
FAIL: test_a_double:412: "%.0a" expected result for "a" doesn't match function
call return value: 1 != 6
FAIL: test_a_double:413: "%.0a" expected result for "a" doesn't match function
call return value: 1 != 6
FAIL: test_a_double:414: "%.1a" expected result for "a" doesn't match function
call return value: 1 != 8
FAIL: test_a_double:415: "%.2a" expected result for "a" doesn't match function
call return value: 1 != 9
FAIL: test_a_double:416: "%.3a" expected result for "a" doesn't match function
call return value: 1 != 10
FAIL: test_a_double:419: "%.0a" expected result for "a" doesn't match output
length: 1 not in [6, 10]
FAIL: test_a_double:420: "%.1a" expected result for "a" doesn't match output
length: 1 not in [6, 12]
FAIL: test_a_double:421: "%.2a" expected result for "a" doesn't match output
length: 1 not in [6, 13]
PASS: test_e_double:437: "%e" result 12: "1.000000e+00"
PASS: test_e_double:438: "%e" result 13: "-1.000000e+00"
PASS: test_e_double:439: "%e" result 12: "1.000000e+01"
PASS: test_e_double:440: "%e" result 13: "-1.000000e+01"
PASS: test_e_double:441: "%e" result 12: "1.000000e+12"
PASS: test_e_double:442: "%e" result 13: "-1.000000e+12"
PASS: test_e_double:443: "%e" result 13: "1.000000e+123"
PASS: test_e_double:444: "%e" result 14: "-1.000000e+123"
PASS: test_e_double:446: "%e" result 12: "9.999000e+99"
PASS: test_e_double:447: "%e" result 12: "9.999900e+99"
PASS: test_e_double:448: "%e" result 12: "9.999990e+99"
PASS: test_e_double:454: "%e" result 12: "1.000000e-01"
PASS: test_e_double:455: "%e" result 12: "1.000000e-12"
PASS: test_e_double:456: "%e" result 13: "1.000000e-123"
PASS: test_f_double:498: "%f" result 8: "0.000000"
PASS: test_f_double:499: "%f" result 8: "0.100000"
PASS: test_f_double:500: "%f" result 8: "0.120000"
PASS: test_f_double:501: "%f" result 8: "0.123000"
PASS: test_f_double:502: "%f" result 8: "0.123400"
PASS: test_f_double:503: "%f" result 8: "0.123450"
PASS: test_f_double:504: "%f" result 8: "0.123456"
PASS: test_f_double:505: "%f" result 8: "1.234567"
PASS: test_f_double:507: "%f" result 9: "10.000000"
PASS: test_f_double:508: "%f" result 20: "1000000000000.000000"
PASS: test_f_double:509: "%f" result 130:
"999999999999999980000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.000000"
PASS: test_f_double:511: "%f" result 8: "0.100000"
PASS: test_f_double:512: "%f" result 8: "0.000000"
PASS: test_f_double:513: "%f" result 8: "0.000000"
FAIL: test_a_long_double:427: "%.0La" expected result for "a" doesn't match
function call return value: 1 != 6
FAIL: test_a_long_double:428: "%.0La" expected result for "a" doesn't match
function call return value: 1 != 6
FAIL: test_a_long_double:429: "%.0La" expected result for "a" doesn't match
function call return value: 1 != 6
FAIL: test_a_long_double:430: "%.1La" expected result for "a" doesn't match
function call return value: 1 != 8
FAIL: test_a_long_double:431: "%.2La" expected result for "a" doesn't match
function call return value: 1 != 9
PASS: test_e_long_double:462: "%Le" result 12: "1.000000e+00"
PASS: test_e_long_double:463: "%Le" result 13: "-1.000000e+00"
PASS: test_e_long_double:464: "%Le" result 12: "1.000000e+01"
PASS: test_e_long_double:465: "%Le" result 13: "-1.000000e+01"
PASS: test_e_long_double:466: "%Le" result 12: "1.000000e+12"
PASS: test_e_long_double:467: "%Le" result 13: "-1.000000e+12"
PASS: test_e_long_double:468: "%Le" result 13: "1.000000e+123"
PASS: test_e_long_double:469: "%Le" result 14: "-1.000000e+123"
PASS: test_e_long_double:471: "%Le" result 12: "9.999000e+99"
PASS: test_e_long_double:472: "%Le" result 12: "9.999900e+99"
PASS: test_e_long_double:473: "%Le" result 12: "9.999990e+99"
PASS: test_e_long_double:476: "%Le" result 12: "9.999999e+99"
PASS: test_e_long_double:485: "%Le" result 12: "1.000000e-01"
PASS: test_e_long_double:486: "%Le" result 12: "1.000000e-12"
PASS: test_e_long_double:487: "%Le" result 13: "1.000000e-123"
PASS: test_e_long_double:489: "%.0Le" result 6: "1e-111"
PASS: test_e_long_double:490: "%.1Le" result 8: "1.0e-111"
PASS: test_e_long_double:491: "%.12Le" result 19: "1.000000000000e-112"
PASS: test_e_long_double:492: "%.13Le" result 20: "1.0000000000000e-113"
PASS: test_f_long_double:519: "%Lf" result 8: "0.000000"
PASS: test_f_long_double:520: "%Lf" result 8: "0.100000"
PASS: test_f_long_double:521: "%Lf" result 8: "0.120000"
PASS: test_f_long_double:522: "%Lf" result 8: "0.123000"
PASS: test_f_long_double:523: "%Lf" result 8: "0.123400"
PASS: test_f_long_double:524: "%Lf" result 8: "0.123450"
PASS: test_f_long_double:525: "%Lf" result 8: "0.123456"
PASS: test_f_long_double:526: "%Lf" result 8: "1.234567"
PASS: test_f_long_double:528: "%Lf" result 9: "10.000000"
PASS: test_f_long_double:529: "%Lf" result 20: "1000000000000.000000"
FAIL: test_f_long_double:530: "%Lf" expected result for
"1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.000000"
doesn't match function call return value: 131 != 130
PASS: test_f_long_double:532: "%Lf" result 8: "0.100000"
PASS: test_f_long_double:533: "%Lf" result 8: "0.000000"
PASS: test_f_long_double:534: "%Lf" result 8: "0.000000"
PASS: test_s:540: "%s" result 0: ""
PASS: test_s:541: "%s" result 0: ""
PASS: test_s:542: "%1s" result 1: " "
PASS: test_s:543: "%s" result 1: "1"
PASS: test_s:544: "%2s" result 2: " "
PASS: test_s:545: "%s" result 2: "12"
PASS: test_s:546: "%s%s" result 2: "12"
PASS: test_s:547: "%s%s" result 2: "12"
PASS: test_s:548: "%s%s" result 2: "12"
PASS: test_s:549: "%3s" result 3: " "
PASS: test_s:550: "%3s" result 3: " 1"
PASS: test_s:551: "%3s" result 3: " 12"
PASS: test_s:552: "%3s" result 3: "123"
PASS: test_s:553: "%3.3s" result 3: " 1"
PASS: test_s:554: "%3.3s" result 3: " 12"
PASS: test_s:555: "%3.3s" result 3: "123"
PASS: test_s:556: "%3.3s" result 3: "123"
PASS: test_s:557: "%3.3s" result 3: "123"
PASS: test_s:558: "%s %s" result 3: "1 2"
PASS: test_s:559: "%s %s" result 4: "12 3"
PASS: test_s:560: "%s %s" result 5: "12 34"
PASS: test_s:561: "[%s %s]" result 5: "[1 2]"
PASS: test_s:562: "[%s %s]" result 6: "[12 3]"
PASS: test_s:563: "[%s %s]" result 7: "[12 34]"
PASS: test_s:567: "%-s" result 3: "123"
PASS: test_s:568: "%-s" result 4: "1234"
PASS: test_s:569: "%-s" result 5: "12345"
PASS: test_s:570: "%-s" result 6: "123456"
28 out of 209 tests failed
FAIL: gcc.dg/tree-ssa/builtin-sprintf.c execution test
>From gcc-bugs-return-548986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Dec 31 21:15:39 2016
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/78961] New: [7 Regression] FAIL: gcc.dg/tree-ssa/scev-3.c scan-tree-dump-times optimized "&a" 1
Date: Sat, 31 Dec 2016 21:15:00 -0000
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X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 7.0
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X-Bugzilla-Severity: normal
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78961
Bug ID: 78961
Summary: [7 Regression] FAIL: gcc.dg/tree-ssa/scev-3.c
scan-tree-dump-times optimized "&a" 1
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa64-hp-hpux11.11
Target: hppa64-hp-hpux11.11
Build: hppa64-hp-hpux11.11
Created attachment 40433
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40433&action=edit
Tree dump
Executing on host: /test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/scev-3.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2
-fdump-tree-optimized -S -o scev-3.s (timeout = 300)
spawn /test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
/test/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/scev-3.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -fdump-tree-optimized
-S -o scev-3.s
PASS: gcc.dg/tree-ssa/scev-3.c (test for excess errors)
FAIL: gcc.dg/tree-ssa/scev-3.c scan-tree-dump-times optimized "&a" 1
Similar fail:
FAIL: gcc.dg/tree-ssa/scev-4.c scan-tree-dump-times optimized "&a" 1
The above also fails on hppa-unknown-linux-gnu.
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2016-12-20 14:27 ` [Bug driver/78863] [6/7 Regression] error on -fsanitize suggests invalid -fsanitize=all marxin at gcc dot gnu.org
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