Do not instrument globals when running ASan on Mac.

build/common.gypi

 # 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 2960 matching lines @@
                   '-gline-tables-only',
                 ],
                 'ldflags': [
                   '-fsanitize=address',
                 ],
                 'defines': [
                   'ADDRESS_SANITIZER',
                 ],
               }],
             ],
+            'conditions': [
+              ['OS=="mac"', {
+                'cflags': [
+                  '-mllvm -asan-globals=0',  # http://crbug.com/196561

[Nico, 2013/04/22 22:20:29]

Sorry, I missed this: 'cflags' isn't used on mac. You probably want
'xcodesettings': { 'OTHER_CFLAGS': ...} instead. As is, this is a no-op.

[Alexander Potapenko, 2013/04/23 10:09:04]

See below, I'm also setting -asan-globals=0 in xcode_settings.

BTW, this is weird. Why can't we just append cflags to OTHER_CFLAGS when
generating Xcode projects?

+                ],
+              }],
+            ],
           }],
           ['tsan==1', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '-fsanitize=thread',
                   '-fno-omit-frame-pointer',
                   '-fPIC',
                   '-mllvm', '-tsan-blacklist=<(tsan_blacklist)',
                 ],
@@ skipping 601 matching lines @@
         'conditions': [
           ['clang==1', {
             'variables': {
               'clang_dir': '../third_party/llvm-build/Release+Asserts/bin',
             },
           }],
           ['asan==1', {
             'xcode_settings': {
               'OTHER_CFLAGS': [
                 '-fsanitize=address',
+                '-mllvm -asan-globals=0',  # http://crbug.com/196561
                 '-w',  # http://crbug.com/162783
               ],
             },
             'defines': [
               'ADDRESS_SANITIZER',
             ],
           }],
         ],
         'target_conditions': [
           ['_type!="static_library"', {
@@ skipping 620 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }