[libcxx] r221966 - Setup llvm-symbolizer when running the tests with sanitizers

[Alexey Samsonov]

FYI ASan/MSan should discover llvm-symbolizer from PATH env var. So, as an
alternative, you could just propagate necessary PATH bits to lit-tests.

On Thu, Nov 13, 2014 at 6:47 PM, Eric Fiselier <eric at efcs.ca> wrote:

> Author: ericwf
> Date: Thu Nov 13 20:47:08 2014
> New Revision: 221966
>
> URL: http://llvm.org/viewvc/llvm-project?rev=221966&view=rev
> Log:
> Setup llvm-symbolizer when running the tests with sanitizers
>
> 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=221966&r1=221965&r2=221966&view=diff
>
> ==============================================================================
> --- libcxx/trunk/test/lit.cfg (original)
> +++ libcxx/trunk/test/lit.cfg Thu Nov 13 20:47:08 2014
> @@ -425,16 +425,30 @@ class Configuration(object):
>      def configure_sanitizer(self):
>          san = self.get_lit_conf('llvm_use_sanitizer', '').strip()
>          if san:
> +            # Search for llvm-symbolizer along the compiler path first
> +            # and then along the PATH env variable.
> +            symbolizer_search_paths = os.environ.get('PATH', '')
> +            cxx_path = lit.util.which(self.cxx)
> +            if cxx_path is not None:
> +                symbolizer_search_paths = os.path.dirname(cxx_path) + \
> +                                          os.pathsep +
> symbolizer_search_paths
> +            llvm_symbolizer = lit.util.which('llvm-symbolizer',
> +                                             symbolizer_search_paths)
> +            # Setup the sanitizer compile flags
>              self.compile_flags += ['-fno-omit-frame-pointer']
>              if sys.platform.startswith('linux'):
>                  self.link_flags += ['-ldl']
>              if san == 'Address':
>                  self.compile_flags += ['-fsanitize=address']
> +                if llvm_symbolizer is not None:
> +                    self.env['ASAN_SYMBOLIZER_PATH'] = llvm_symbolizer
>                  self.config.available_features.add('asan')
>              elif san == 'Memory' or san == 'MemoryWithOrigins':
>                  self.compile_flags += ['-fsanitize=memory']
>                  if san == 'MemoryWithOrigins':
>                      self.compile_flags +=
> ['-fsanitize-memory-track-origins']
> +                if llvm_symbolizer is not None:
> +                    self.env['MSAN_SYMBOLIZER_PATH'] = llvm_symbolizer
>                  self.config.available_features.add('msan')
>              elif san == 'Undefined':
>                  self.compile_flags += ['-fsanitize=undefined',
>
>
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-- 
Alexey Samsonov
vonosmas at gmail.com
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