[libcxx] r222051 - add debug info when compiling sanitizer tests

[Eric Fiselier]

I seem to get line numbers on certain things (It seems mostly template
instantiations) that I didn't get before. Here is an example.
You'll notice in the latter there are lines and files on #3 and #4.



=========================== without -g ===================================

WRITE of size 8 at 0x7fff55043588 thread T0
    #0 0x46b936 in __asan_memcpy
/home/eric/full-llvm/llvm/projects/compiler-rt/lib/asan/asan_interceptors.cc:370:5
    #1 0x4b673e in uw_install_context_1 (/tmp/tmpV_pKYRexe+0x4b673e)
    #2 0x4b6d26 in _Unwind_Resume (/tmp/tmpV_pKYRexe+0x4b6d26)
    #3 0x4b21bc in void std::__1::__assoc_state<int>::set_value<int
const&>(int const&) (/tmp/tmpV_pKYRexe+0x4b21bc)
    #4 0x4a61ff in std::__1::promise<int>::set_value(int const&)
(/tmp/tmpV_pKYRexe+0x4a61ff)
    #5 0x4a3921 in main (/tmp/tmpV_pKYRexe+0x4a3921)
    #6 0x2adefa479ec4 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)
    #7 0x417a16 in _start (/tmp/tmpV_pKYRexe+0x417a16)


============================= with -g ===================================

WRITE of size 8 at 0x7fff614945c8 thread T0
    #0 0x46b9f6 in __asan_memcpy
/home/eric/full-llvm/llvm/projects/compiler-rt/lib/asan/asan_interceptors.cc:370:5
    #1 0x4b875e in uw_install_context_1 (/tmp/tmpWegAIsexe+0x4b875e)
    #2 0x4b8d46 in _Unwind_Resume (/tmp/tmpWegAIsexe+0x4b8d46)
    #3 0x4b3e57 in void std::__1::__assoc_state<int>::set_value<int
const&>(int const&)
/home/eric/workspace/libcxx/test/../include/future:656:1
    #4 0x4a6799 in std::__1::promise<int>::set_value(int const&)
/home/eric/workspace/libcxx/test/../include/future:1467:5
    #5 0x4a39e1 in main
/home/eric/workspace/libcxx/test/thread/futures/futures.promise/set_value_const.pass.cpp:40:13
    #6 0x7fd782e11ec4 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)
    #7 0x417ad6 in _start (/tmp/tmpWegAIsexe+0x417ad6)





On Fri, Nov 14, 2014 at 3:33 PM, David Blaikie <dblaikie at gmail.com> wrote:

> Why -g? sanitizers should enable -gmlt by default which should suffice
>
> On Fri, Nov 14, 2014 at 2:18 PM, Eric Fiselier <eric at efcs.ca> wrote:
>
>> Author: ericwf
>> Date: Fri Nov 14 16:18:03 2014
>> New Revision: 222051
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=222051&view=rev
>> Log:
>> add debug info when compiling sanitizer tests
>>
>> Modified:
>>     libcxx/trunk/test/lit.cfg
>>
>> Modified: libcxx/trunk/test/lit.cfg
>> URL:
>> http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/lit.cfg?rev=222051&r1=222050&r2=222051&view=diff
>>
>> ==============================================================================
>> --- libcxx/trunk/test/lit.cfg (original)
>> +++ libcxx/trunk/test/lit.cfg Fri Nov 14 16:18:03 2014
>> @@ -435,7 +435,7 @@ class Configuration(object):
>>              llvm_symbolizer = lit.util.which('llvm-symbolizer',
>>                                               symbolizer_search_paths)
>>              # Setup the sanitizer compile flags
>> -            self.compile_flags += ['-fno-omit-frame-pointer']
>> +            self.compile_flags += ['-g', '-fno-omit-frame-pointer']
>>              if sys.platform.startswith('linux'):
>>                  self.link_flags += ['-ldl']
>>              if san == 'Address':
>>
>>
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>>
>
>
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