src/hotspot/share/runtime/os.hpp

*** 738,10 ***
--- 738,11 ---
    static void* malloc  (size_t size, MEMFLAGS flags, const NativeCallStack& stack);
    static void* malloc  (size_t size, MEMFLAGS flags);
    static void* realloc (void *memblock, size_t size, MEMFLAGS flag, const NativeCallStack& stack);
    static void* realloc (void *memblock, size_t size, MEMFLAGS flag);
  
+   // handles NULL pointers
    static void  free    (void *memblock);
    static char* strdup(const char *, MEMFLAGS flags = mtInternal);  // Like strdup
    // Like strdup, but exit VM when strdup() returns NULL
    static char* strdup_check_oom(const char*, MEMFLAGS flags = mtInternal);