Enable assertions and debugging code in the release...

SConstruct

 # Copyright 2008 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 95 matching lines @@
     'profilingsupport:on': {
       'CPPDEFINES':   ['ENABLE_LOGGING_AND_PROFILING'],
     },
     'debuggersupport:on': {
       'CPPDEFINES':   ['ENABLE_DEBUGGER_SUPPORT'],
     }
   },
   'gcc': {
     'all': {
       'CCFLAGS':      ['$DIALECTFLAGS', '$WARNINGFLAGS'],
-      'CXXFLAGS':     ['$CCFLAGS', '-fno-rtti', '-fno-exceptions'],
+      'CXXFLAGS':     ['$CCFLAGS', '-fno-rtti', '-fno-exceptions',
+                       '-fno-strict-aliasing'],
     },
     'visibility:hidden': {
       # Use visibility=default to disable this.
       'CXXFLAGS':     ['-fvisibility=hidden']
     },
     'mode:debug': {
       'CCFLAGS':      ['-g', '-O0'],
       'CPPDEFINES':   ['ENABLE_DISASSEMBLER', 'DEBUG'],
       'os:android': {
         'CCFLAGS':    ['-mthumb']
       }
     },
     'mode:release': {
       'CCFLAGS':      ['-O3', '-fomit-frame-pointer', '-fdata-sections',
                        '-ffunction-sections'],
+      'CPPDEFINES':   ['DEBUG'],
       'os:android': {
         'CCFLAGS':    ['-mthumb', '-Os'],
-        'CPPDEFINES': ['SK_RELEASE', 'NDEBUG']
+        'CPPDEFINES': ['SK_RELEASE']
       }
     },
     'os:linux': {
       'CCFLAGS':      ['-ansi'] + GCC_EXTRA_CCFLAGS,
       'library:shared': {
         'CPPDEFINES': ['V8_SHARED'],
         'LIBS': ['pthread']
       }
     },
     'os:macos': {
@@ skipping 79 matching lines @@
       'LINKFLAGS':    ['/DEBUG'],
       'msvcrt:static': {
         'CCFLAGS': ['/MTd']
       },
       'msvcrt:shared': {
         'CCFLAGS': ['/MDd']
       }
     },
     'mode:release': {
       'CCFLAGS':      ['/O2'],
+      'CPPDEFINES':   ['_DEBUG', 'DEBUG'],
       'LINKFLAGS':    ['/OPT:REF', '/OPT:ICF'],
       'msvcrt:static': {
         'CCFLAGS': ['/MT']
       },
       'msvcrt:shared': {
         'CCFLAGS': ['/MD']
       },
       'msvcltcg:on': {
         'CCFLAGS':      ['/GL'],
         'LINKFLAGS':    ['/LTCG'],
@@ skipping 126 matching lines @@
     },
     'os:android': {
       'CPPDEFINES':   ['ANDROID', '__ARM_ARCH_5__', '__ARM_ARCH_5T__',
                        '__ARM_ARCH_5E__', '__ARM_ARCH_5TE__'],
       'CCFLAGS':      ANDROID_FLAGS,
       'CPPPATH':      ANDROID_INCLUDES,
       'LIBPATH':     [ANDROID_TOP + '/out/target/product/generic/obj/lib'],
       'LINKFLAGS':    ANDROID_LINKFLAGS,
       'LIBS':         ['log', 'c', 'stdc++', 'm'],
       'mode:release': {
-        'CPPDEFINES': ['SK_RELEASE', 'NDEBUG']
+        'CPPDEFINES': ['SK_RELEASE']
       }
     },
   },
   'msvc': {
     'all': {
       'CPPDEFINES': ['_HAS_EXCEPTIONS=0'],
       'LIBS': ['winmm', 'ws2_32']
     },
     'library:shared': {
       'CPPDEFINES': ['USING_V8_SHARED']
@@ skipping 38 matching lines @@
     },
     'os:android': {
       'CPPDEFINES':   ['ANDROID', '__ARM_ARCH_5__', '__ARM_ARCH_5T__',
                        '__ARM_ARCH_5E__', '__ARM_ARCH_5TE__'],
       'CCFLAGS':      ANDROID_FLAGS,
       'CPPPATH':      ANDROID_INCLUDES,
       'LIBPATH':     [ANDROID_TOP + '/out/target/product/generic/obj/lib'],
       'LINKFLAGS':    ANDROID_LINKFLAGS,
       'LIBS':         ['log', 'c', 'stdc++', 'm'],
       'mode:release': {
-        'CPPDEFINES': ['SK_RELEASE', 'NDEBUG']
+        'CPPDEFINES': ['SK_RELEASE']
       }
     },
     'arch:ia32': {
       'CCFLAGS':      ['-m32'],
       'LINKFLAGS':    ['-m32']
     },
     'arch:x64': {
       'CCFLAGS':      ['-m64'],
       'LINKFLAGS':    ['-m64']
     },
@@ skipping 569 matching lines @@
 # version of scons.  Also, there's a bug in some revisions that
 # doesn't allow this flag to be set, so we swallow any exceptions.
 # Lovely.
 try:
   SetOption('warn', 'no-deprecated')
 except:
   pass
 
 
 Build()