Hard-code the symbolizer path in asan_symbolize.py

tools/valgrind/asan/asan_symbolize.py

 #!/usr/bin/env python
 
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from third_party import asan_symbolize
 
 import os
 import re
 import sys
 
 def fix_filename(file_name):
   for path_to_cut in sys.argv[1:]:
     file_name = re.sub(".*" + path_to_cut, "", file_name)
   file_name = re.sub(".*asan_[a-z_]*.cc:[0-9]*", "_asan_rtl_", file_name)
   file_name = re.sub(".*crtstuff.c:0", "???:0", file_name)
   return file_name
 
+
 class LineBuffered(object):
   """Disable buffering on a file object."""
   def __init__(self, stream):
     self.stream = stream
 
   def write(self, data):
     self.stream.write(data)
     if '\n' in data:
       self.stream.flush()
 
   def __getattr__(self, attr):
     return getattr(self.stream, attr)
 
 
 def disable_buffering():
   """Makes this process and child processes stdout unbuffered."""
   if not os.environ.get('PYTHONUNBUFFERED'):
     # Since sys.stdout is a C++ object, it's impossible to do
     # sys.stdout.write = lambda...
     sys.stdout = LineBuffered(sys.stdout)
     os.environ['PYTHONUNBUFFERED'] = 'x'
 
 
+def set_symbolizer_path():
+  """Set the path to the llvm-symbolize binary in the Chromium source tree."""
+  if not os.environ.get('LLVM_SYMBOLIZER_PATH'):
+    script_dir = os.path.dirname(os.path.abspath(__file__))
+    # Assuming this script resides in src/tools/valgrind/asan.

[Alexander Potapenko, 2014/09/19 13:08:06]

Can you please assert this and/or check that symbolizer_path exists?

+    src_root = os.path.join(script_dir, "..", "..", "..")
+    symbolizer_path = os.path.join(src_root, 'third_party',
+        'llvm-build', 'Release+Asserts', 'bin', 'llvm-symbolizer')
+    os.environ['LLVM_SYMBOLIZER_PATH'] = os.path.abspath(symbolizer_path)
+
+
 def main():
   disable_buffering()
+  set_symbolizer_path()
   asan_symbolize.demangle = True
   loop = asan_symbolize.SymbolizationLoop(binary_name_filter=fix_filename)
   loop.process_stdin()
 
 if __name__ == '__main__':
   main()