Allow assertions to be enabled in Blink Release builds.

Source/wtf/Assertions.h

 /*
  * Copyright (C) 2003, 2006, 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 25 matching lines @@
    For non-debug builds, everything is disabled by default, except for the
    RELEASE_ASSERT family of macros.
 
    Defining any of the symbols explicitly prevents this from having any effect.
 
 */
 
 #include "wtf/Compiler.h"
 #include "wtf/WTFExport.h"
 
+// Users must test "#if ENABLE(ASSERT)", which helps ensure that code
+// testing this macro has included this header.
+#ifndef ENABLE_ASSERT
 #ifdef NDEBUG
-/* Disable ASSERT* macros in release mode. */
-#define ASSERTIONS_DISABLED_DEFAULT 1
+/* Disable ASSERT* macros in release mode by default. */
+#define ENABLE_ASSERT 0
 #else
-#define ASSERTIONS_DISABLED_DEFAULT 0
+#define ENABLE_ASSERT 1
+#endif /* NDEBUG */
 #endif
 
 #ifndef BACKTRACE_DISABLED
-#define BACKTRACE_DISABLED ASSERTIONS_DISABLED_DEFAULT
-#endif
-
-#ifndef ASSERT_ENABLED
-// Notice the not below:
-#define ASSERT_ENABLED !ASSERTIONS_DISABLED_DEFAULT
+#define BACKTRACE_DISABLED !ENABLE(ASSERT)
 #endif
 
 #ifndef ASSERT_MSG_DISABLED
-#define ASSERT_MSG_DISABLED ASSERTIONS_DISABLED_DEFAULT
+#define ASSERT_MSG_DISABLED !ENABLE(ASSERT)
 #endif
 
 #ifndef ASSERT_ARG_DISABLED
-#define ASSERT_ARG_DISABLED ASSERTIONS_DISABLED_DEFAULT
+#define ASSERT_ARG_DISABLED !ENABLE(ASSERT)
 #endif
 
 #ifndef FATAL_DISABLED
-#define FATAL_DISABLED ASSERTIONS_DISABLED_DEFAULT
+#define FATAL_DISABLED !ENABLE(ASSERT)
 #endif
 
 #ifndef ERROR_DISABLED
-#define ERROR_DISABLED ASSERTIONS_DISABLED_DEFAULT
+#define ERROR_DISABLED !ENABLE(ASSERT)
 #endif
 
 #ifndef LOG_DISABLED
-#define LOG_DISABLED ASSERTIONS_DISABLED_DEFAULT
+#define LOG_DISABLED !ENABLE(ASSERT)
 #endif
 
 /* WTF logging functions can process %@ in the format string to log a NSObject* but the printf format attribute
    emits a warning when %@ is used in the format string.  Until <rdar://problem/5195437> is resolved we can't include
    the attribute when being used from Objective-C code in case it decides to use %@. */
 #if COMPILER(GCC) && !defined(__OBJC__)
 #define WTF_ATTRIBUTE_PRINTF(formatStringArgument, extraArguments) __attribute__((__format__(printf, formatStringArgument, extraArguments)))
 #else
 #define WTF_ATTRIBUTE_PRINTF(formatStringArgument, extraArguments)
 #endif
@@ skipping 99 matching lines @@
 /* ASSERT, ASSERT_NOT_REACHED, ASSERT_UNUSED
 
   These macros are compiled out of release builds.
   Expressions inside them are evaluated in debug builds only.
 */
 #if OS(WIN)
 /* FIXME: Change to use something other than ASSERT to avoid this conflict with the underlying platform */
 #undef ASSERT
 #endif
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 
 #define ASSERT(assertion) \
     (!(assertion) ? \
         (WTFReportAssertionFailure(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, #assertion), \
          CRASH()) : \
         (void)0)
 
 #define ASSERT_AT(assertion, file, line, function) \
     (!(assertion) ? \
         (WTFReportAssertionFailure(file, line, function, #assertion), \
@@ skipping 38 matching lines @@
 
 #define RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(assertion) ASSERT_WITH_SECURITY_IMPLICATION(assertion)
 
 #else
 
 #define ASSERT_WITH_SECURITY_IMPLICATION(assertion) ASSERT(assertion)
 #define RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(assertion) RELEASE_ASSERT(assertion)
 
 #endif
 
-#if defined(ADDRESS_SANITIZER) || ASSERT_ENABLED
-#define SECURITY_ASSERT_ENABLED 1
+/* Users must test "#if ENABLE(SECURITY_ASSERT)", which helps ensure
+ * that code testing this macro has included this header. */
+#if defined(ADDRESS_SANITIZER) || ENABLE(ASSERT)
+#define ENABLE_SECURITY_ASSERT 1
 #else
-#define SECURITY_ASSERT_ENABLED 0
+#define ENABLE_SECURITY_ASSERT 0
 #endif
 
 /* ASSERT_WITH_MESSAGE */
 
 #if ASSERT_MSG_DISABLED
 #define ASSERT_WITH_MESSAGE(assertion, ...) ((void)0)
 #else
 #define ASSERT_WITH_MESSAGE(assertion, ...) do \
     if (!(assertion)) { \
         WTFReportAssertionFailureWithMessage(__FILE__, __LINE__, WTF_PRETTY_FUNCTION, #assertion, __VA_ARGS__); \
@@ skipping 90 matching lines @@
 #endif
 
 /* RELEASE_ASSERT
 
    Use in places where failure of an assertion indicates a definite security
    vulnerability from which execution must not continue even in a release build.
    Please sure to file bugs for these failures using the security template:
       http://code.google.com/p/chromium/issues/entry?template=Security%20Bug
 */
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 #define RELEASE_ASSERT(assertion) ASSERT(assertion)
 #define RELEASE_ASSERT_WITH_MESSAGE(assertion, ...) ASSERT_WITH_MESSAGE(assertion, __VA_ARGS__)
 #define RELEASE_ASSERT_NOT_REACHED() ASSERT_NOT_REACHED()
 #else
 #define RELEASE_ASSERT(assertion) (UNLIKELY(!(assertion)) ? (IMMEDIATE_CRASH()) : (void)0)
 #define RELEASE_ASSERT_WITH_MESSAGE(assertion, ...) RELEASE_ASSERT(assertion)
 #define RELEASE_ASSERT_NOT_REACHED() IMMEDIATE_CRASH()
 #endif
 
 /* DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES */
@@ skipping 35 matching lines @@
 } \
 inline const thisType& to##thisType(const argumentType& argumentName) \
 { \
     ASSERT_WITH_SECURITY_IMPLICATION(referencePredicate); \
     return static_cast<const thisType&>(argumentName); \
 } \
 void to##thisType(const thisType*); \
 void to##thisType(const thisType&)
 
 #endif /* WTF_Assertions_h */