Merge Linux-specific bits from upstream asan_symbolize.py into Chrome

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.
 
 import os
 import re
 import sys
 import string
 import subprocess
 
 pipes = {}
+filetypes = {}
 vmaddrs = {}
+DEBUG=False
+
+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
 
 # TODO(glider): need some refactoring here
 def symbolize_addr2line(line):
   #0 0x7f6e35cf2e45  (/blah/foo.so+0x11fe45)
-  match = re.match('^( *#[0-9]+ *0x[0-9a-f]+) *\((.*)\+(0x[0-9a-f]+)\)', line)
+  match = re.match('^( *#([0-9]+) *0x[0-9a-f]+) *\((.*)\+(0x[0-9a-f]+)\)', line)
   if match:
-    binary = match.group(2)
-    addr = match.group(3)
+    frameno = match.group(2)
+    binary = match.group(3)
+    addr = match.group(4)
     if not pipes.has_key(binary):
       pipes[binary] = subprocess.Popen(["addr2line", "-f", "-e", binary],
                          stdin=subprocess.PIPE, stdout=subprocess.PIPE)
     p = pipes[binary]
     try:
       print >>p.stdin, addr
       function_name = p.stdout.readline().rstrip()
       file_name     = p.stdout.readline().rstrip()
     except:
       function_name = ""
       file_name = ""
-    for path_to_cut in sys.argv[1:]:
-      file_name = re.sub(".*" + path_to_cut, "", file_name)
-    file_name = re.sub(".*asan_rtl.cc:[0-9]*", "_asan_rtl_", file_name)
-    file_name = re.sub(".*crtstuff.c:0", "???:0", file_name)
+    file_name = fix_filename(file_name)
 
     print match.group(1), "in", function_name, file_name
   else:
     print line.rstrip()
 
 def fix_binary_for_chromium(binary):
   BUILDTYPE = 'Release'
   # Chromium Helper EH is the same binary as Chromium Helper, but there's no
   # .dSYM directory for it.
   binary = binary.replace('Chromium Helper EH', 'Chromium Helper')
@@ skipping 95 matching lines @@
     for line in sys.stdin:
       if system == 'Linux':
         symbolize_addr2line(line)
       elif system == 'Darwin':
         symbolize_atos(line)
   else:
     print 'Unknown system: ', system
 
 if __name__ == '__main__':
   main()