{ environ; __environ; stdin; stdout; stderr; malloc; calloc; realloc; free; memalign; posix_memalign; aligned_alloc; malloc_usable_size; timezone; daylight; tzname; __timezone; __daylight; __tzname; signgam; __signgam; optarg; optind; opterr; optreset; __optreset; getdate_err; h_errno; program_invocation_name; program_invocation_short_name; __progname; __progname_full; __stack_chk_guard; };