From d494d88c95516a87aaa16d5a915d92b5c213eafa Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Tue, 22 Mar 2022 17:25:11 -0400
Subject: datetime: Don't forget to copy NUL chars to buffer

---
diff --git a/src/datetime.c b/src/datetime.c
index ffc3329..08ed9a6 100644
--- a/src/datetime.c
+++ b/src/datetime.c
@@ -142,7 +142,7 @@ datetime_parse(struct tm *now_tm, const char *input, time_t *arg_sec)
 	sec = *arg_sec;  /* GCC is dumb. */
 	got = false;
 	for (t = 0; t < sizeof(FORMATS_TIME) / sizeof(FORMATS_TIME[0]) ; ++t) {
-		memcpy(fmt_buf, FORMATS_TIME[t], time_fmt_len);
+		memcpy(fmt_buf, FORMATS_TIME[t], time_fmt_len + 1);
 		_datetime_reset_tm(&arg_tm);
 		end = strptime(input, fmt_buf, &arg_tm);
 		if (end != NULL && *end == '\0') {
@@ -159,11 +159,11 @@ datetime_parse(struct tm *now_tm, const char *input, time_t *arg_sec)
 		if (FORMATS_DATE[d][0] == '\0') {
 			break;
 		}
-		memcpy(fmt_buf, FORMATS_DATE[d], date_fmt_len);
+		memcpy(fmt_buf, FORMATS_DATE[d], date_fmt_len + 1);
 		for (t = 0; t < sizeof(FORMATS_TIME) / sizeof(FORMATS_TIME[0]);
 				++t) {
 			memcpy(fmt_buf + date_fmt_len, FORMATS_TIME[t],
-					time_fmt_len);
+					time_fmt_len + 1);
 			_datetime_reset_tm(&arg_tm);
 			end = strptime(input, fmt_buf, &arg_tm);
 			if (end != NULL && *end == '\0') {
@@ -178,14 +178,14 @@ datetime_parse(struct tm *now_tm, const char *input, time_t *arg_sec)
 		}
 	}
 	for (t = 0; t < sizeof(FORMATS_TIME) / sizeof(FORMATS_TIME[0]); ++t) {
-		memcpy(fmt_buf, FORMATS_TIME[t], time_fmt_len);
+		memcpy(fmt_buf, FORMATS_TIME[t], time_fmt_len + 1);
 		for (d = 0; d < sizeof(FORMATS_DATE) / sizeof(FORMATS_DATE[0]);
 				++d) {
 			if (FORMATS_DATE[d][0] == '\0') {
 				break;
 			}
 			memcpy(fmt_buf + time_fmt_len, FORMATS_DATE[d],
-					date_fmt_len);
+					date_fmt_len + 1);
 			_datetime_reset_tm(&arg_tm);
 			end = strptime(input, fmt_buf, &arg_tm);
 			if (end != NULL && *end == '\0') {
@@ -200,7 +200,7 @@ datetime_parse(struct tm *now_tm, const char *input, time_t *arg_sec)
 		}
 	}
 	for (d = 0; d < sizeof(FORMATS_MISC) / sizeof(FORMATS_MISC[0]) ; ++d) {
-		memcpy(fmt_buf, FORMATS_MISC[d], misc_fmt_len);
+		memcpy(fmt_buf, FORMATS_MISC[d], misc_fmt_len + 1);
 		_datetime_reset_tm(&arg_tm);
 		end = strptime(input, fmt_buf, &arg_tm);
 		if (end != NULL && *end == '\0') {
--
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