Re: [Linaro-TCWG-CI] gcc-15-8947-g8ed2d5d219e: 5 regressions on master-thumb_m23_soft_eabi
On Fri, 28 Mar 2025 at 15:15, Jørgen Kvalsvik wrote:
>
> On 3/28/25 14:44, Christophe Lyon wrote:
> > Hi,
> >
> > On Fri, 28 Mar 2025 at 14:24, wrote:
> >>
> >> Dear contributor,
> >>
> >> Our automatic CI has detected problems related to your patch(es). Please
> >> find some details below.
> >>
> >> In arm-eabi cortex-m23 soft, after:
> >>| commit gcc-15-8947-g8ed2d5d219e
> >>| Author: Jørgen Kvalsvik
> >>| Date: Tue Jun 4 14:13:22 2024 +0200
> >>|
> >>| Add prime path coverage to gcc/gcov
> >>|
> >>| This patch adds prime path coverage to gcc/gcov. First, a quick
> >>| introduction to path coverage, before I explain a bit on the
> >> pieces of
> >>| the patch.
> >>| ... 404 lines of the commit log omitted.
> >>
> >> Produces 5 regressions:
> >>|
> >>| regressions.sum:
> >>| Running g++:g++.dg/gcov/gcov.exp ...
> >>| FAIL: g++.dg/gcov/gcov-22.C -std=gnu++17 gcov failed: spawn failed
> >>| FAIL: g++.dg/gcov/gcov-22.C -std=gnu++26 gcov failed: spawn failed
> >>| FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed
> >>| Running gcc:gcc.misc-tests/gcov.exp ...
> >>| ... and 2 more
> >>
> >
> > I've given a quick look at the logs, and gcov-22.C says:
> > spawn -ignore SIGHUP
> > /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/destdir/x86_64-pc-linux-gnu/bin/gcov
> > --prime-paths gcov-22.C
> > FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed
> >
> > I believe that rather than "dg-compile", it should use "dg-do run {
> > target native }" like almost all other gcov tests?
>
> Not necessarily -- the functions in this file is a distillation of the
> odd CFGs and functions that caused gnarly and unexpected errors, usually
> ICEs. There is no main() and some of the functions are infinite loops.
> We get enough information by simply compiling.
>
OK I've understood the issue. Our build system defines GXX_UNDER_TEST
(pointing to the just-installed compiler), but we still test "in build
tree".
So gcc-transform-out-of-tree will do nothing and we set GCOV to an invalid path
(
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/destdir/x86_64-pc-linux-gnu/bin/gcov
above)
because the actual binary is called $target-gcov, just like the
compiler is called $target-gcc.
I'll take a look at writing a patch to support a new variable (GCOV_UNDER_TEST).
>
> >
> > For the other errors:
> > FAIL: gcc.misc-tests/gcov-31.c (test for excess errors)
> > FAIL: gcc.misc-tests/gcov-32.c (test for excess errors)
> > the log actually says:
> > /gcov-31.c:12:8: error: unknown type name 'sigjmp_buf'; did you mean
> > 'jmp_buf'?
> > /gcov-31.c: In function 'run_pending_traps':
> > /gcov-31.c:22:5: error: implicit declaration of function '__sigsetjmp'
> > [-Wimplicit-function-declaration]
> >
> > /gcov-32.c:6:8: error: unknown type name 'sigjmp_buf'; did you mean
> > 'jmp_buf'?
> > /gcov-32.c:21:19: error: passing argument 1 of 'setjmp' makes pointer
> > from integer without a cast [-Wint-conversion]
> >
> > I haven't looked further, but does this indicate a dependency on
> > glibc? (this target "arm-none-eabi" uses newlib)
> >
>
> Looks like it. This is only partially intentional -- the tests are
> cleaned examples from real programs (bash, check) which use sigjmp_buf.
> The bash case (gcov-31.c) uses __sigsetjmp and surely has a glibc
> dependency, but gcov-32.c could maybe be tuned to use jmp_buf. I don't
> know if that will preserve the failure mode however, and the root of the
> problem was fixed when the test was added.
>
> Looks like Dimitar Dimitrov (CC) already addressed the failure.
>
> commit 1c5c57092cf23ac6eae139627d2406f67fe3303b
> Author: Dimitar Dimitrov
> Date: Thu Mar 27 20:31:17 2025 +0200
>
> testsuite: Require effective target sigsetjmp for gcov-31/32
>
Indeed, thanks for the heads-up!
Thanks,
Christophe
>
> >
> > Thanks,
> >
> > Christophe
> >
> >> Used configuration :
> >> *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb
> >> -march=armv8-m.base -mtune=cortex-m23 -mfloat-abi=soft -mfpu=auto
> >> *configure and test flags:* --target arm-eabi --disable-multilib
> >> --with-mode=thumb --with-cpu=cortex-m23 --with-float=soft
> >> --target_board=-mthumb/-march=armv8-m.base/-mtune=cortex-m23/-mfloat-abi=soft/-mfpu=auto
> >> qemu_cpu=cortex-m33
> >>
> >> We track this bug report under
> >> https://linaro.atlassian.net/browse/GNU-1551. Please let us know if you
> >> have a fix.
> >>
> >> If you have any questions regarding this report, please ask on
> >> linaro-toolch...@lists.linaro.org mailing list.
> >>
> >> -8<--8<--8<--
> >>
> >> The information below contains the details of the failures, and the ways
> >> to reproduce a debug environment:
> >>
> >> You can find the failure logs in *.log.1.xz files in
> >> *
> >> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc
[Linaro-TCWG-CI] gcc-15-8947-g8ed2d5d219e: 5 regressions on master-thumb_m23_soft_eabi
Dear contributor, Our automatic CI has detected problems related to your patch(es). Please find some details below. In arm-eabi cortex-m23 soft, after: | commit gcc-15-8947-g8ed2d5d219e | Author: Jørgen Kvalsvik | Date: Tue Jun 4 14:13:22 2024 +0200 | | Add prime path coverage to gcc/gcov | | This patch adds prime path coverage to gcc/gcov. First, a quick | introduction to path coverage, before I explain a bit on the pieces of | the patch. | ... 404 lines of the commit log omitted. Produces 5 regressions: | | regressions.sum: | Running g++:g++.dg/gcov/gcov.exp ... | FAIL: g++.dg/gcov/gcov-22.C -std=gnu++17 gcov failed: spawn failed | FAIL: g++.dg/gcov/gcov-22.C -std=gnu++26 gcov failed: spawn failed | FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed | Running gcc:gcc.misc-tests/gcov.exp ... | ... and 2 more Used configuration : *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.base -mtune=cortex-m23 -mfloat-abi=soft -mfpu=auto *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m23 --with-float=soft --target_board=-mthumb/-march=armv8-m.base/-mtune=cortex-m23/-mfloat-abi=soft/-mfpu=auto qemu_cpu=cortex-m33 We track this bug report under https://linaro.atlassian.net/browse/GNU-1551. Please let us know if you have a fix. If you have any questions regarding this report, please ask on linaro-toolch...@lists.linaro.org mailing list. -8<--8<--8<-- The information below contains the details of the failures, and the ways to reproduce a debug environment: You can find the failure logs in *.log.1.xz files in * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/00-sumfiles/ The full lists of regressions and improvements as well as configure and make commands are in * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/notify/ The list of [ignored] baseline and flaky failures are in * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/sumfiles/xfails.xfail Current build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/311/artifact/artifacts Instruction to reproduce the build : https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/8ed2d5d219e999aee42015a0db38612011c2c507/tcwg_gnu_embed_check_gcc/master-thumb_m23_soft_eabi/reproduction_instructions.txt Full commit : https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=8ed2d5d219e999aee42015a0db38612011c2c507
[Linaro-TCWG-CI] gcc-15-8956-ge90d6c2639c: 8 regressions on aarch64
Dear contributor, Our automatic CI has detected problems related to your patch(es). Please find some details below. In gcc_check master-aarch64, after: | commit gcc-15-8956-ge90d6c2639c | Author: Sam James | Date: Thu Mar 27 00:21:43 2025 + | | testsuite: more (mostly cosmetic) dg- whitespace fixes | | Some of these are harmless but still inconsistent (and asking for trouble | given it may give people the wrong idea about similar "style"). | | ... 9 lines of the commit log omitted. Produces 8 regressions: | | regressions.sum: | Running gcc:gcc.target/aarch64/aarch64.exp ... | ERROR: tcl error code NONE | ERROR: tcl error sourcing gcc.target/aarch64/aarch64.exp. | UNRESOLVED: testcase gcc.target/aarch64/aarch64.exp' aborted due to Tcl error | ERROR: unmatched open brace in list | ... and 5 more Used configuration : *CI config* tcwg_gcc_check master-aarch64 *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu We track this bug report under https://linaro.atlassian.net/browse/GNU-1552. Please let us know if you have a fix. If you have any questions regarding this report, please ask on linaro-toolch...@lists.linaro.org mailing list. -8<--8<--8<-- The information below contains the details of the failures, and the ways to reproduce a debug environment: You can find the failure logs in *.log.1.xz files in * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3503/artifact/artifacts/00-sumfiles/ The full lists of regressions and improvements as well as configure and make commands are in * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3503/artifact/artifacts/notify/ The list of [ignored] baseline and flaky failures are in * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3503/artifact/artifacts/sumfiles/xfails.xfail Current build : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3503/artifact/artifacts Reference build : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3502/artifact/artifacts Instruction to reproduce the build : https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/e90d6c2639c39266479085a5f8df443b56eca259/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt Full commit : https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=e90d6c2639c39266479085a5f8df443b56eca259
Re: [Linaro-TCWG-CI] gcc-15-8947-g8ed2d5d219e: 5 regressions on master-thumb_m23_soft_eabi
Hi,
On Fri, 28 Mar 2025 at 14:24, wrote:
>
> Dear contributor,
>
> Our automatic CI has detected problems related to your patch(es). Please find
> some details below.
>
> In arm-eabi cortex-m23 soft, after:
> | commit gcc-15-8947-g8ed2d5d219e
> | Author: Jørgen Kvalsvik
> | Date: Tue Jun 4 14:13:22 2024 +0200
> |
> | Add prime path coverage to gcc/gcov
> |
> | This patch adds prime path coverage to gcc/gcov. First, a quick
> | introduction to path coverage, before I explain a bit on the pieces of
> | the patch.
> | ... 404 lines of the commit log omitted.
>
> Produces 5 regressions:
> |
> | regressions.sum:
> | Running g++:g++.dg/gcov/gcov.exp ...
> | FAIL: g++.dg/gcov/gcov-22.C -std=gnu++17 gcov failed: spawn failed
> | FAIL: g++.dg/gcov/gcov-22.C -std=gnu++26 gcov failed: spawn failed
> | FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed
> | Running gcc:gcc.misc-tests/gcov.exp ...
> | ... and 2 more
>
I've given a quick look at the logs, and gcov-22.C says:
spawn -ignore SIGHUP
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/destdir/x86_64-pc-linux-gnu/bin/gcov
--prime-paths gcov-22.C
FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed
I believe that rather than "dg-compile", it should use "dg-do run {
target native }" like almost all other gcov tests?
For the other errors:
FAIL: gcc.misc-tests/gcov-31.c (test for excess errors)
FAIL: gcc.misc-tests/gcov-32.c (test for excess errors)
the log actually says:
/gcov-31.c:12:8: error: unknown type name 'sigjmp_buf'; did you mean 'jmp_buf'?
/gcov-31.c: In function 'run_pending_traps':
/gcov-31.c:22:5: error: implicit declaration of function '__sigsetjmp'
[-Wimplicit-function-declaration]
/gcov-32.c:6:8: error: unknown type name 'sigjmp_buf'; did you mean 'jmp_buf'?
/gcov-32.c:21:19: error: passing argument 1 of 'setjmp' makes pointer
from integer without a cast [-Wint-conversion]
I haven't looked further, but does this indicate a dependency on
glibc? (this target "arm-none-eabi" uses newlib)
Thanks,
Christophe
> Used configuration :
> *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.base
> -mtune=cortex-m23 -mfloat-abi=soft -mfpu=auto
> *configure and test flags:* --target arm-eabi --disable-multilib
> --with-mode=thumb --with-cpu=cortex-m23 --with-float=soft
> --target_board=-mthumb/-march=armv8-m.base/-mtune=cortex-m23/-mfloat-abi=soft/-mfpu=auto
> qemu_cpu=cortex-m33
>
> We track this bug report under https://linaro.atlassian.net/browse/GNU-1551.
> Please let us know if you have a fix.
>
> If you have any questions regarding this report, please ask on
> linaro-toolch...@lists.linaro.org mailing list.
>
> -8<--8<--8<--
>
> The information below contains the details of the failures, and the ways to
> reproduce a debug environment:
>
> You can find the failure logs in *.log.1.xz files in
> *
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/00-sumfiles/
> The full lists of regressions and improvements as well as configure and make
> commands are in
> *
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/notify/
> The list of [ignored] baseline and flaky failures are in
> *
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/sumfiles/xfails.xfail
>
> Current build :
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts
> Reference build :
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/311/artifact/artifacts
>
> Instruction to reproduce the build :
> https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/8ed2d5d219e999aee42015a0db38612011c2c507/tcwg_gnu_embed_check_gcc/master-thumb_m23_soft_eabi/reproduction_instructions.txt
>
> Full commit :
> https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=8ed2d5d219e999aee42015a0db38612011c2c507
Re: [Linaro-TCWG-CI] gcc-15-8947-g8ed2d5d219e: 5 regressions on master-thumb_m23_soft_eabi
On 3/28/25 14:44, Christophe Lyon wrote:
Hi,
On Fri, 28 Mar 2025 at 14:24, wrote:
Dear contributor,
Our automatic CI has detected problems related to your patch(es). Please find
some details below.
In arm-eabi cortex-m23 soft, after:
| commit gcc-15-8947-g8ed2d5d219e
| Author: Jørgen Kvalsvik
| Date: Tue Jun 4 14:13:22 2024 +0200
|
| Add prime path coverage to gcc/gcov
|
| This patch adds prime path coverage to gcc/gcov. First, a quick
| introduction to path coverage, before I explain a bit on the pieces of
| the patch.
| ... 404 lines of the commit log omitted.
Produces 5 regressions:
|
| regressions.sum:
| Running g++:g++.dg/gcov/gcov.exp ...
| FAIL: g++.dg/gcov/gcov-22.C -std=gnu++17 gcov failed: spawn failed
| FAIL: g++.dg/gcov/gcov-22.C -std=gnu++26 gcov failed: spawn failed
| FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed
| Running gcc:gcc.misc-tests/gcov.exp ...
| ... and 2 more
I've given a quick look at the logs, and gcov-22.C says:
spawn -ignore SIGHUP
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/destdir/x86_64-pc-linux-gnu/bin/gcov
--prime-paths gcov-22.C
FAIL: g++.dg/gcov/gcov-22.C -std=gnu++98 gcov failed: spawn failed
I believe that rather than "dg-compile", it should use "dg-do run {
target native }" like almost all other gcov tests?
Not necessarily -- the functions in this file is a distillation of the
odd CFGs and functions that caused gnarly and unexpected errors, usually
ICEs. There is no main() and some of the functions are infinite loops.
We get enough information by simply compiling.
For the other errors:
FAIL: gcc.misc-tests/gcov-31.c (test for excess errors)
FAIL: gcc.misc-tests/gcov-32.c (test for excess errors)
the log actually says:
/gcov-31.c:12:8: error: unknown type name 'sigjmp_buf'; did you mean 'jmp_buf'?
/gcov-31.c: In function 'run_pending_traps':
/gcov-31.c:22:5: error: implicit declaration of function '__sigsetjmp'
[-Wimplicit-function-declaration]
/gcov-32.c:6:8: error: unknown type name 'sigjmp_buf'; did you mean 'jmp_buf'?
/gcov-32.c:21:19: error: passing argument 1 of 'setjmp' makes pointer
from integer without a cast [-Wint-conversion]
I haven't looked further, but does this indicate a dependency on
glibc? (this target "arm-none-eabi" uses newlib)
Looks like it. This is only partially intentional -- the tests are
cleaned examples from real programs (bash, check) which use sigjmp_buf.
The bash case (gcov-31.c) uses __sigsetjmp and surely has a glibc
dependency, but gcov-32.c could maybe be tuned to use jmp_buf. I don't
know if that will preserve the failure mode however, and the root of the
problem was fixed when the test was added.
Looks like Dimitar Dimitrov (CC) already addressed the failure.
commit 1c5c57092cf23ac6eae139627d2406f67fe3303b
Author: Dimitar Dimitrov
Date: Thu Mar 27 20:31:17 2025 +0200
testsuite: Require effective target sigsetjmp for gcov-31/32
Thanks,
Christophe
Used configuration :
*CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.base
-mtune=cortex-m23 -mfloat-abi=soft -mfpu=auto
*configure and test flags:* --target arm-eabi --disable-multilib
--with-mode=thumb --with-cpu=cortex-m23 --with-float=soft
--target_board=-mthumb/-march=armv8-m.base/-mtune=cortex-m23/-mfloat-abi=soft/-mfpu=auto
qemu_cpu=cortex-m33
We track this bug report under https://linaro.atlassian.net/browse/GNU-1551.
Please let us know if you have a fix.
If you have any questions regarding this report, please ask on
linaro-toolch...@lists.linaro.org mailing list.
-8<--8<--8<--
The information below contains the details of the failures, and the ways to
reproduce a debug environment:
You can find the failure logs in *.log.1.xz files in
*
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make
commands are in
*
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
*
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts/sumfiles/xfails.xfail
Current build :
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/312/artifact/artifacts
Reference build :
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_eabi-build/311/artifact/artifacts
Instruction to reproduce the build :
https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/8ed2d5d219e999aee42015a0db38612011c2c507/tcwg_gnu_embed_check_gcc/master-thumb_m23_soft_eabi/reproduction_instructions.txt
Full commit :
https://gcc.gnu.org/git/?p=gcc.git;a=commitd
Regressions on native/releases/gcc-13 at commit r13-9442 vs commit r13-9441 on Linux/x86_64
Regressions on releases/gcc-13 at commit r13-9442 vs commit r13-9441 on Linux/x86_64 New failures: FAIL: c-c++-common/tsan/atomic_stack.c -O0 output pattern test FAIL: c-c++-common/tsan/atomic_stack.c -O2 output pattern test FAIL: c-c++-common/tsan/bitfield_race.c -O0 output pattern test FAIL: c-c++-common/tsan/bitfield_race.c -O2 output pattern test FAIL: c-c++-common/tsan/fd_pipe_race.c -O0 output pattern test FAIL: c-c++-common/tsan/fd_pipe_race.c -O2 output pattern test FAIL: c-c++-common/tsan/free_race2.c -O0 output pattern test FAIL: c-c++-common/tsan/free_race2.c -O2 output pattern test FAIL: c-c++-common/tsan/free_race.c -O0 output pattern test FAIL: c-c++-common/tsan/free_race.c -O2 output pattern test FAIL: c-c++-common/tsan/mutexset1.c -O0 output pattern test FAIL: c-c++-common/tsan/mutexset1.c -O2 output pattern test FAIL: c-c++-common/tsan/pr65400-1.c -O0 output pattern test FAIL: c-c++-common/tsan/pr65400-1.c -O2 output pattern test New passes: FAIL: c-c++-common/tsan/simple_race.c -O0 output pattern test FAIL: c-c++-common/tsan/simple_race.c -O2 output pattern test FAIL: c-c++-common/tsan/simple_stack.c -O0 output pattern test FAIL: c-c++-common/tsan/simple_stack.c -O2 output pattern test FAIL: c-c++-common/tsan/thread_leak1.c -O0 output pattern test FAIL: c-c++-common/tsan/thread_leak1.c -O2 output pattern test FAIL: c-c++-common/tsan/thread_leak2.c -O0 output pattern test FAIL: c-c++-common/tsan/thread_leak2.c -O2 output pattern test FAIL: c-c++-common/tsan/thread_leak.c -O0 execution test FAIL: c-c++-common/tsan/thread_leak.c -O2 execution test FAIL: c-c++-common/tsan/tiny_race.c -O0 output pattern test FAIL: c-c++-common/tsan/tls_race.c -O0 output pattern test FAIL: c-c++-common/tsan/tls_race.c -O2 output pattern test FAIL: c-c++-common/tsan/volatile.c -O0 execution test FAIL: c-c++-common/tsan/volatile.c -O2 execution test
