[PATCH] [asan] disable fast unwind on ARM
Greg Fitzgerald
gregf at codeaurora.org
Tue May 20 10:34:21 PDT 2014
> Fast stack unwind should work on ARM for Clang-compiled code, no matter Android or not.
It requires -marm -fno-omit-frame-pointer.
Hmm, I'm not seeing that. Zooming in on "TestCases/double-free.cc", I see that it is being compiled with -fno-omit-frame-pointer (and -marm is the default for armv7 targets). I double-checked and recompiled with those flags tacked onto the end of the clang invocation, but the result is the same:
==12127==ERROR: AddressSanitizer: attempting double-free on 0x41e007f0 in thread T0:
#0 0x7269b in free compiler-rt/lib/asan/asan_malloc_linux.cc:65
#1 0x896e3 in main compiler-rt/test/asan/TestCases/double-free.cc:15
LLVMSymbolizer: error reading file: No such file or directory.
#2 0x40a142cb (/lib/arm-linux-gnueabi/libc.so.6+0x182cb)
0x41e007f0 is located 0 bytes inside of 10-byte region [0x41e007f0,0x41e007fa)
freed by thread T0 here:
#0 0x7269b in free compiler-rt/lib/asan/asan_malloc_linux.cc:65
previously allocated by thread T0 here:
#0 0x72859 in malloc compiler-rt/lib/asan/asan_malloc_linux.cc:75
SUMMARY: AddressSanitizer: double-free compiler-rt/lib/asan/asan_malloc_linux.cc:65 free
==12127==ABORTING
What am I missing?
http://reviews.llvm.org/D3814
More information about the llvm-commits
mailing list