Add run-time CHECK to smoke-test allocator overrides

content/app/content_main_runner.cc

 // 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.
 
 #include "content/public/app/content_main_runner.h"
 
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <string>
 #include <utility>
 
+#include "base/allocator/allocator_check.h"
 #include "base/allocator/allocator_extension.h"
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/stack_trace.h"
 #include "base/files/file_path.h"
 #include "base/i18n/icu_util.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 624 matching lines @@
     }
 
     if (!process_type.empty() &&
         (!delegate_ || delegate_->ShouldSendMachPort(process_type))) {
       MachBroker::ChildSendTaskPortToParent();
     }
 #elif defined(OS_WIN)
     base::win::SetupCRT(command_line);
 #endif
 
+    // If we are on a platform where the default allocator is overridden (shim
+    // layer on windows, tcmalloc on Linux Desktop) smoke-tests that the
+    // overriding logic is working correctly. If not causes a hard crash, as its
+    // unexpected absence has security implications.
+    CHECK(base::allocator::IsAllocatorInitialized());
+
 #if defined(OS_POSIX)
     if (!process_type.empty()) {
       // When you hit Ctrl-C in a terminal running the browser
       // process, a SIGINT is delivered to the entire process group.
       // When debugging the browser process via gdb, gdb catches the
       // SIGINT for the browser process (and dumps you back to the gdb
       // console) but doesn't for the child processes, killing them.
       // The fix is to have child processes ignore SIGINT; they'll die
       // on their own when the browser process goes away.
       //
@@ skipping 172 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content