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

[Alp Toker]

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