1#include <time.h>
2#include <stdio.h>
3#include <langinfo.h>
4#include "locale_impl.h"
5#include "atomic.h"
6
7const char *__nl_langinfo_l(nl_item, locale_t);
8
9char *__asctime(const struct tm *restrict tm, char *restrict buf)
10{
11	if (snprintf(buf, 26, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
12		__nl_langinfo_l(ABDAY_1+tm->tm_wday, C_LOCALE),
13		__nl_langinfo_l(ABMON_1+tm->tm_mon, C_LOCALE),
14		tm->tm_mday, tm->tm_hour,
15		tm->tm_min, tm->tm_sec,
16		1900 + tm->tm_year) >= 26)
17	{
18		/* ISO C requires us to use the above format string,
19		 * even if it will not fit in the buffer. Thus asctime_r
20		 * is _supposed_ to crash if the fields in tm are too large.
21		 * We follow this behavior and crash "gracefully" to warn
22		 * application developers that they may not be so lucky
23		 * on other implementations (e.g. stack smashing..).
24		 */
25		a_crash();
26	}
27	return buf;
28}
29