Enable --verify-heap in release mode

build/common.gypi

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 55 matching lines @@
     # Default arch variant for MIPS.
     'mips_arch_variant%': 'mips32r2',
 
     'v8_enable_debugger_support%': 1,
 
     'v8_enable_disassembler%': 0,
 
     # Enable extra checks in API functions and other strategic places.
     'v8_enable_extra_checks%': 1,
 
+    'v8_enable_gdbjit%': 0,
+
     'v8_object_print%': 0,
 
-    'v8_enable_gdbjit%': 0,
-
     # Enable profiling support. Only required on Windows.
     'v8_enable_prof%': 0,
 
+    'v8_enable_verify_heap%': 0,
+
     # Some versions of GCC 4.5 seem to need -fno-strict-aliasing.
     'v8_no_strict_aliasing%': 0,
 
     # Chrome needs this definition unconditionally. For standalone V8 builds,
     # it's handled in build/standalone.gypi.
     'want_separate_host_toolset%': 1,
 
     'v8_use_snapshot%': 'true',
     'host_os%': '<(OS)',
     'v8_use_liveobjectlist%': 'false',
@@ skipping 15 matching lines @@
     'conditions': [
       ['v8_enable_debugger_support==1', {
         'defines': ['ENABLE_DEBUGGER_SUPPORT',],
       }],
       ['v8_enable_disassembler==1', {
         'defines': ['ENABLE_DISASSEMBLER',],
       }],
       ['v8_enable_extra_checks==1', {
         'defines': ['ENABLE_EXTRA_CHECKS',],
       }],
+      ['v8_enable_gdbjit==1', {
+        'defines': ['ENABLE_GDB_JIT_INTERFACE',],
+      }],
       ['v8_object_print==1', {
         'defines': ['OBJECT_PRINT',],
       }],
-      ['v8_enable_gdbjit==1', {
-        'defines': ['ENABLE_GDB_JIT_INTERFACE',],
+      ['v8_enable_verify_heap==1', {
+        'defines': ['VERIFY_HEAP',],
       }],
       ['v8_interpreted_regexp==1', {
         'defines': ['V8_INTERPRETED_REGEXP',],
       }],
       ['v8_target_arch=="arm"', {
         'defines': [
           'V8_TARGET_ARCH_ARM',
         ],
         'conditions': [
           [ 'v8_can_use_unaligned_accesses=="true"', {
@@ skipping 190 matching lines @@
         'cflags': [ '-I/usr/pkg/include' ],
       }],
     ],  # conditions
     'configurations': {
       'Debug': {
         'defines': [
           'DEBUG',
           'ENABLE_DISASSEMBLER',
           'V8_ENABLE_CHECKS',
           'OBJECT_PRINT',
+          'VERIFY_HEAP',
         ],
         'msvs_settings': {
           'VCCLCompilerTool': {
             'Optimization': '0',
 
             'conditions': [
               ['OS=="win" and component=="shared_library"', {
                 'RuntimeLibrary': '3',  # /MDd
               }, {
                 'RuntimeLibrary': '1',  # /MTd
@@ skipping 84 matching lines @@
                 'OptimizeReferences': '2',
                 'EnableCOMDATFolding': '2',
               },
             },
           }],  # OS=="win"
         ],  # conditions
       },  # Release
     },  # configurations
   },  # target_defaults
 }