LIBC_MALLOC_DEBUG {
  global:
    debug_calloc;
    debug_finalize;
    debug_free;
    debug_free_malloc_leak_info;
    debug_get_malloc_leak_info;
    debug_initialize;
    debug_iterate;
    debug_mallinfo;
    debug_malloc;
    debug_malloc_backtrace;
    debug_malloc_disable;
    debug_malloc_enable;
    debug_malloc_usable_size;
    debug_mallopt;
    debug_memalign;
    debug_posix_memalign;
    debug_realloc;

  local:
    *;
};