* [Bug testsuite/100073] [11 regression] test case gcc.dg/pr86058.c fails after r11-8161
2021-04-13 23:49 [Bug testsuite/100073] New: [11 regression] test case gcc.dg/pr86058.c fails after r11- seurer at gcc dot gnu.org
@ 2021-04-14 6:54 ` rguenth at gcc dot gnu.org
2021-04-14 16:15 ` msebor at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-04-14 6:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.0
Keywords| |diagnostic
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The testcase seems new - whether a TARGET_MEM_REF appears or not is obviously
dependent on the target.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug testsuite/100073] [11 regression] test case gcc.dg/pr86058.c fails after r11-8161
2021-04-13 23:49 [Bug testsuite/100073] New: [11 regression] test case gcc.dg/pr86058.c fails after r11- seurer at gcc dot gnu.org
2021-04-14 6:54 ` [Bug testsuite/100073] [11 regression] test case gcc.dg/pr86058.c fails after r11-8161 rguenth at gcc dot gnu.org
@ 2021-04-14 16:15 ` msebor at gcc dot gnu.org
2021-04-14 16:45 ` cvs-commit at gcc dot gnu.org
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From: msebor at gcc dot gnu.org @ 2021-04-14 16:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-04-14
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Looks like powerpc64 doesn't warn for the code, and apparently neither does
aarch64 with -mabi=ilp32, due to what seems like a limitation in the uninit
pass which sees this IL:
<bb 3> [local count: 105119324]:
doloop.6_16 = (unsigned int) indx_9(D);
ivtmp.9_22 = (unsigned long) &MEM <int[10]> [(void *)&arr + -4B]; <<<
&arr[-1]
_27 = out_11(D) + 18446744073709551612;
ivtmp.11_26 = (unsigned long) _27;
<bb 4> [local count: 955630225]:
# doloop.6_20 = PHI <doloop.6_17(6), doloop.6_16(3)>
# ivtmp.9_7 = PHI <ivtmp.9_6(6), ivtmp.9_22(3)> <<< ivtmp.9_22(3)
points to arr[-1]
# ivtmp.11_24 = PHI <ivtmp.11_25(6), ivtmp.11_26(3)>
ivtmp.9_6 = ivtmp.9_7 + 4; <<< &arr[0]
_28 = (void *) ivtmp.9_6;
_1 = MEM[(int *)_28]; <<< uninitialized
read, no warning
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug testsuite/100073] [11 regression] test case gcc.dg/pr86058.c fails after r11-8161
2021-04-13 23:49 [Bug testsuite/100073] New: [11 regression] test case gcc.dg/pr86058.c fails after r11- seurer at gcc dot gnu.org
2021-04-14 6:54 ` [Bug testsuite/100073] [11 regression] test case gcc.dg/pr86058.c fails after r11-8161 rguenth at gcc dot gnu.org
2021-04-14 16:15 ` msebor at gcc dot gnu.org
@ 2021-04-14 16:45 ` cvs-commit at gcc dot gnu.org
2021-04-14 16:48 ` [Bug tree-optimization/100073] missing warning on an uninitialized array read in a loop msebor at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2021-04-14 16:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Sebor <msebor@gcc.gnu.org>:
https://gcc.gnu.org/g:785209fc464ee3efec2b2a8e8244b7292c251ad8
commit r11-8179-g785209fc464ee3efec2b2a8e8244b7292c251ad8
Author: Martin Sebor <msebor@redhat.com>
Date: Wed Apr 14 10:43:22 2021 -0600
PR testsuite/100073 - test case gcc.dg/pr86058.c fails on arm, powerpc64
gcc/testsuite/ChangeLog:
* gcc.dg/pr86058.c: Limit to just x86_64.
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2021-04-14 16:45 ` cvs-commit at gcc dot gnu.org
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2021-04-14 16:50 ` msebor at gcc dot gnu.org
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From: msebor at gcc dot gnu.org @ 2021-04-14 16:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[11 regression] test case |missing warning on an
|gcc.dg/pr86058.c fails |uninitialized array read in
|after r11-8161 |a loop
Target|powerpc64*-linux-gnu |arm-eabi,
| |powerpc64*-linux-gnu
Host|powerpc64*-linux-gnu |
Build|powerpc64*-linux-gnu |
Blocks| |24639
Status|ASSIGNED |NEW
Component|testsuite |tree-optimization
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
I have limited the test to just x86_64 for now and repurposed this bug to track
the missing warning on arm, aarch64 (with -mabi=ilp32) and powerpc64.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues
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2021-04-14 16:48 ` [Bug tree-optimization/100073] missing warning on an uninitialized array read in a loop msebor at gcc dot gnu.org
@ 2021-04-14 16:50 ` msebor at gcc dot gnu.org
2021-04-15 12:09 ` cvs-commit at gcc dot gnu.org
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From: msebor at gcc dot gnu.org @ 2021-04-14 16:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|msebor at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also https://gcc.gnu.org/pipermail/gcc-patches/2021-April/568002.html
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` (4 preceding siblings ...)
2021-04-14 16:50 ` msebor at gcc dot gnu.org
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2021-04-27 11:40 ` jakub at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2021-04-15 12:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:4d1fa72894e3fbc5f331d2e8984e990307396124
commit r11-8194-g4d1fa72894e3fbc5f331d2e8984e990307396124
Author: Jakub Jelinek <jakub@redhat.com>
Date: Thu Apr 15 14:08:03 2021 +0200
testsuite: enable pr86058.c also on i?86-*-* [PR100073]
The test also works with -m32 or -mx32 the same as it does for -m64,
therefore it should be enabled for i?86-*-* x86_64-*-* targets,
x86_64-*-* alone is never right.
2021-04-15 Jakub Jelinek <jakub@redhat.com>
PR testsuite/100073
* gcc.dg/pr86058.c: Enable also on i?86-*-*.
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2021-04-15 12:09 ` cvs-commit at gcc dot gnu.org
@ 2021-04-27 11:40 ` jakub at gcc dot gnu.org
2021-07-28 7:06 ` rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2021-04-27 11:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.0 |11.2
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.1 has been released, retargeting bugs to GCC 11.2.
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2021-04-13 23:49 [Bug testsuite/100073] New: [11 regression] test case gcc.dg/pr86058.c fails after r11- seurer at gcc dot gnu.org
` (6 preceding siblings ...)
2021-04-27 11:40 ` jakub at gcc dot gnu.org
@ 2021-07-28 7:06 ` rguenth at gcc dot gnu.org
2022-04-21 7:49 ` rguenth at gcc dot gnu.org
2023-05-29 10:04 ` jakub at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-07-28 7:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.2 |11.3
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.2 is being released, retargeting bugs to GCC 11.3
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` (7 preceding siblings ...)
2021-07-28 7:06 ` rguenth at gcc dot gnu.org
@ 2022-04-21 7:49 ` rguenth at gcc dot gnu.org
2023-05-29 10:04 ` jakub at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2022-04-21 7:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.3 |11.4
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.3 is being released, retargeting bugs to GCC 11.4.
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2022-04-21 7:49 ` rguenth at gcc dot gnu.org
@ 2023-05-29 10:04 ` jakub at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2023-05-29 10:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100073
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.4 |11.5
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.4 is being released, retargeting bugs to GCC 11.5.
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