Add rudimentary support for ASan's intra-object-overflow detection.

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 364 matching lines @@
       # If this is set, the clang plugins used on the buildbot will be used.
       # Run tools/clang/scripts/update.sh to make sure they are compiled.
       # This causes 'clang_chrome_plugins_flags' to be set.
       # Has no effect if 'clang' is not set as well.
       'clang_use_chrome_plugins%': 1,
 
       # Enable building with ASAN (Clang's -fsanitize=address option).
       # -fsanitize=address only works with clang, but asan=1 implies clang=1
       # See https://sites.google.com/a/chromium.org/dev/developers/testing/addresssanitizer
       'asan%': 0,
+      'asan_blacklist%': '<(PRODUCT_DIR)/../../tools/memory/asan/blacklist.txt',
       # Enable coverage gathering instrumentation in ASan. This flag also
       # controls coverage granularity (1 for function-level coverage, 2 for
       # block-level coverage).
       'asan_coverage%': 0,
+      # Enable intra-object-overflow detection in ASan (experimental).
+      'asan_field_padding%': 0,
 
       # Enable Chromium overrides of the default configurations for various
       # dynamic tools (like ASan).
       'use_sanitizer_options%': 0,
 
       # Enable building with SyzyAsan.
       # See https://code.google.com/p/sawbuck/wiki/SyzyASanHowTo
       'syzyasan%': 0,
 
       # Enable building with LSan (Clang's -fsanitize=leak option).
@@ skipping 699 matching lines @@
     'enable_pre_sync_backup%': '<(enable_pre_sync_backup)',
     'enable_webrtc%': '<(enable_webrtc)',
     'chromium_win_pch%': '<(chromium_win_pch)',
     'configuration_policy%': '<(configuration_policy)',
     'safe_browsing%': '<(safe_browsing)',
     'enable_web_speech%': '<(enable_web_speech)',
     'notifications%': '<(notifications)',
     'clang_use_chrome_plugins%': '<(clang_use_chrome_plugins)',
     'mac_want_real_dsym%': '<(mac_want_real_dsym)',
     'asan%': '<(asan)',
+    'asan_blacklist%': '<(asan_blacklist)',
     'asan_coverage%': '<(asan_coverage)',
+    'asan_field_padding%': '<(asan_field_padding)',
     'use_sanitizer_options%': '<(use_sanitizer_options)',
     'syzyasan%': '<(syzyasan)',
     'syzygy_optimize%': '<(syzygy_optimize)',
     'lsan%': '<(lsan)',
     'msan%': '<(msan)',
     'msan_blacklist%': '<(msan_blacklist)',
     'msan_track_origins%': '<(msan_track_origins)',
     'tsan%': '<(tsan)',
     'tsan_blacklist%': '<(tsan_blacklist)',
     'ubsan%': '<(ubsan)',
@@ skipping 2928 matching lines @@
                   'MEMORY_SANITIZER_INITIAL_SIZE',
                 ],
               }],
             ],
           }],
           ['asan==1', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '-fsanitize=address',
+                  '-fsanitize-blacklist=<(asan_blacklist)',
                 ],
                 'ldflags': [
                   '-fsanitize=address',
                 ],
               }],
             ],
             'conditions': [
               ['OS=="mac"', {
                 'cflags': [
                   '-mllvm -asan-globals=0',  # http://crbug.com/352073
@@ skipping 41 matching lines @@
           }],
           ['asan_coverage!=0', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '-mllvm -asan-coverage=<(asan_coverage)',
                 ],
               }],
             ],
           }],
+          ['asan_field_padding!=0', {
+            'target_conditions': [
+              ['_toolset=="target"', {
+                'cflags': [
+                  '-fsanitize-address-field-padding=<(asan_field_padding)',
+                ],
+              }],
+            ],
+          }],
           ['lsan==1', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '-fsanitize=leak',
                 ],
                 'ldflags': [
                   '-fsanitize=leak',
                 ],
                 'defines': [
@@ skipping 1614 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',
   },
 }