buildbot failure in LLVM on sanitizer-x86_64-linux (-Wframe-larger-than)

[Alexey Samsonov]

Hi Alp,

This warning should be fixed by r210301. However, consider investigating
why the frame size appears to be that large. I believe we build this code
with GCC as well and have seen no complaints
from its implementation of -Wframe-larger-than.

And thanks for implementing this flag!


On Thu, Jun 5, 2014 at 4:00 PM, Alp Toker <alp at nuanti.com> wrote:

> Hi Kostya,
>
> Looks like our new clang diagnostic from r210293 has caught a potential
> issue in compiler-rt which is now breaking the build due to -Werror:
>
> /home/dtoolsbot/build/sanitizer-x86_64-linux/build/
> llvm/projects/compiler-rt/lib/tsan/rtl/tsan_rtl_mutex.cc:460:6: error:
> stack frame size of 536 bytes in function '__tsan::ReportDeadlock'
> [-Werror,-Wframe-larger-than]
> void ReportDeadlock(ThreadState *thr, uptr pc, DDReport *r) {
>      ^
> [ 93%] [ 93%] Building C object lib/builtins/CMakeFiles/clang_
> rt.builtins-i386.dir/udivti3.c.o
> [ 93%] Building CXX object lib/tsan/CMakeFiles/clang_rt.
> tsan-x86_64.dir/rtl/tsan_suppressions.cc.o
> 1 error generated.
>
> Can you confirm that the stack frame report is legitimate?
>
> Assuming it is, you'll probably want to either fix the function or relax
> the byte limit passed to clang in your build system.
>
> Let me know if I can help.
>
> Alp.
>
>
>
> -------- Original Message --------
> Subject:        buildbot failure in LLVM on sanitizer-x86_64-linux
> Date:   Thu, 05 Jun 2014 15:53:19 -0700
> From:   llvm.buildmaster at lab.llvm.org
> To:     Alp Toker <alp at nuanti.com>, Eric Christopher <echristo at gmail.com>,
> Jingyue Wu <jingyue at google.com>
> CC:     gkistanova at gmail.com
>
>
>
> The Buildbot has detected a new failure on builder sanitizer-x86_64-linux
> while building llvm.
> Full details are available at:
>  http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/10266
>
> Buildbot URL: http://lab.llvm.org:8011/
>
> Buildslave for this Build: sanitizer-buildbot1
>
> Build Reason: scheduler
> Build Source Stamp: [branch trunk] 210295
> Blamelist: alp,echristo,jingyue
>
> BUILD FAILED: failed annotate failed bootstrap clang failed run asan tests
> failed run msan unit tests failed run 64-bit tsan unit tests failed run
> 64-bit lsan unit tests failed run sanitizer_common tests
>
> sincerely,
>  -The Buildbot
>
>
>
>
>
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-- 
Alexey Samsonov
vonosmas at gmail.com
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