dl_iterate_phdr   432 gc/dyn_load.c    if (dl_iterate_phdr) {
dl_iterate_phdr   434 gc/dyn_load.c      dl_iterate_phdr(GC_register_dynlib_callback, &did_something);
dl_iterate_phdr   453 gc/dyn_load.c    return (dl_iterate_phdr == 0);