libc {

  GLIBC_2.0 {

    # global variables

    _obstack;

    # interface of malloc functions

    __libc_calloc; __libc_free; __libc_mallinfo; __libc_malloc;

    __libc_mallopt; __libc_memalign; __libc_pvalloc; __libc_realloc;

    __libc_valloc;

    __malloc_initialize_hook; __free_hook; __malloc_hook; __realloc_hook;

    __memalign_hook; __after_morecore_hook;

    __malloc_initialized; __default_morecore; __morecore;

    # functions used in inline functions or macros

    _obstack_allocated_p; _obstack_begin; _obstack_begin_1;

    _obstack_free; _obstack_memory_used; _obstack_newchunk;

    # variables in normal name space

    mallwatch; obstack_alloc_failed_handler; obstack_exit_failure;

    # c*

    calloc; cfree;

    # f*

    free;

    # m*

    mallinfo; malloc; malloc_get_state; malloc_set_state; malloc_stats;

    malloc_trim; malloc_usable_size; mallopt; memalign; mprobe; mtrace;

    muntrace;

    # o*

    obstack_free;

    # p*

    pvalloc;

    # r*

    realloc;

    # t*

    tr_break;

    # v*

    valloc;

  }

  GLIBC_2.1 {

    # Special functions.

    __libc_freeres;

  }

  GLIBC_2.2 {

    # m*

    mcheck_check_all; mcheck_pedantic;

    # p*

    posix_memalign;

  }

  GLIBC_2.10 {

    malloc_info;

  }

  GLIBC_2.16 {

    aligned_alloc;

  }

  GLIBC_2.26 {

    reallocarray;

  }

  GLIBC_PRIVATE {

    # Internal startup hook for libpthread.

    __libc_malloc_pthread_startup;

    # Internal destructor hook for libpthread.

    __libc_thread_freeres;

    # struct scratch_buffer support

    __libc_scratch_buffer_grow;

    __libc_scratch_buffer_grow_preserve;

    __libc_scratch_buffer_set_array_size;

    # Internal name for reallocarray

    __libc_reallocarray;

    # dynarray support

    __libc_dynarray_at_failure;

    __libc_dynarray_emplace_enlarge;

    __libc_dynarray_finalize;

    __libc_dynarray_resize;

    __libc_dynarray_resize_clear;

    # struct alloc_buffer support

    __libc_alloc_buffer_alloc_array;

    __libc_alloc_buffer_allocate;

    __libc_alloc_buffer_copy_bytes;

    __libc_alloc_buffer_copy_string;

    __libc_alloc_buffer_create_failure;

  }

}