[LLVMdev] Need help reproducing a sanitizer buildbot failure

[Kostya Serebryany]

Ah, I see.
The bot actually symbolizes the asan's output just fine:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/2959/steps/annotate/logs/stdio

 #1 0x2888c1d in llvm::raw_ostream::write(char const*, unsigned long)
/home/dtoolsbot/build/sanitizer-x86_64-linux-bootstrap/build/llvm/lib/Support/raw_ostream.cpp:332

But since this is a lit test, we don't see the whole output and so this
requires a local rebuild and rerun
(and then you need llvm-symbolizer in PATH).

I wonder if we can configure the lit test runner to print the (tail of)
test output on failure.

--kcc



On Fri, Apr 11, 2014 at 9:59 AM, Evgeniy Stepanov <eugenis at google.com>wrote:

> You need llvm-symbolizer in PATH.
> On Apr 11, 2014 3:16 AM, "Diego Novillo" <dnovillo at google.com> wrote:
>
>> OK, so now I've gotten a build but the output from asan is less than
>> helpful:
>>
>> $ llvm/x/llvm_build_asan/./bin/opt llvm/x/llvm/test/Other/optimization-remarks-inline.ll
>> -inline -pass-remarks=inline -S
>> =================================================================
>> ==6791==ERROR: AddressSanitizer: heap-use-after-free on address
>> 0x6040000016a8 at pc 0x1e70553 bp 0x7fff29de4fb0 sp 0x7fff29de4fa8
>> READ of size 13 at 0x6040000016a8 thread T0
>>     #0 0x1e70552 (/ssd/dnovillo/llvm/x/llvm_build_asan/bin/opt+0x1e70552)
>>     #1 0x1e6f3d3 (/ssd/dnovillo/llvm/x/llvm_build_asan/bin/opt+0x1e6f3d3)
>>     #2 0x7ab722 (/ssd/dnovillo/llvm/x/llvm_build_asan/bin/opt+0x7ab722)
>>     #3 0x19eacc5 (/ssd/dnovillo/llvm/x/llvm_build_asan/bin/opt+0x19eacc5)
>>     #4 0x1892f92 (/ssd/dnovillo/llvm/x/llvm_build_asan/bin/opt+0x1892f92)
>> [ ... ]
>>
>> Is there an option for asan to show me source file locations?  Or at
>> least function names.  I'm not sure what to do with this.
>>
>>
>> Thanks.  Diego.
>>
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