MallocHook_GetCallerStackTrace 642 third_party/tcmalloc/chromium/src/malloc_hook.cc extern "C" int MallocHook_GetCallerStackTrace(void** result, int max_depth, MallocHook_GetCallerStackTrace 642 third_party/tcmalloc/vendor/src/malloc_hook.cc extern "C" int MallocHook_GetCallerStackTrace(void** result, int max_depth,