[PATCH] [asan] disable fast unwind on ARM

[Kostya Serebryany]

On Tue, May 20, 2014 at 9:34 PM, Greg Fitzgerald <gregf at codeaurora.org>wrote:

> > 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.
>

I don't like this line ^^^^
(although it may be an unrelated problem)


>       #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
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20140520/34a3be9b/attachment.html>