1. Enable large object pointer offset check in release build.

third_party/tcmalloc/chromium/src/internal_logging.h

 // Copyright (c) 2005, 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:
 // 
 //     * 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
@@ skipping 95 matching lines @@
 
 // Like assert(), but executed even in NDEBUG mode
 #undef CHECK_CONDITION
 #define CHECK_CONDITION(cond)                                            \
 do {                                                                     \
   if (!(cond)) {                                                         \
     ::tcmalloc::Log(::tcmalloc::kCrash, __FILE__, __LINE__, #cond);      \
   }                                                                      \
 } while (0)
 
+#define CHECK_CONDITION_PRINT(cond, str)                                 \
+do {                                                                     \
+  if (!(cond)) {                                                         \
+    ::tcmalloc::Log(::tcmalloc::kCrash, __FILE__, __LINE__, str);        \
+  }                                                                      \
+} while (0)
+
 // Our own version of assert() so we can avoid hanging by trying to do
 // all kinds of goofy printing while holding the malloc lock.
 #ifndef NDEBUG
 #define ASSERT(cond) CHECK_CONDITION(cond)
+#define ASSERT_PRINT(cond, str) CHECK_CONDITION_PRINT(cond, str)
 #else
 #define ASSERT(cond) ((void) 0)
+#define ASSERT_PRINT(cond, str) ((void) 0)
 #endif
 
 // Print into buffer
 class TCMalloc_Printer {
  private:
   char* buf_;           // Where should we write next
   int   left_;          // Space left in buffer (including space for \0)
 
  public:
   // REQUIRES: "length > 0"
   TCMalloc_Printer(char* buf, int length) : buf_(buf), left_(length) {
     buf[0] = '\0';
   }
 
   void printf(const char* format, ...)
 #ifdef HAVE___ATTRIBUTE__
     __attribute__ ((__format__ (__printf__, 2, 3)))
 #endif
 ;
 };
 
 #endif  // TCMALLOC_INTERNAL_LOGGING_H_