From: Ben Harris <bjh21@bjh21.me.uk>
Date: Thu, 27 Feb 2025 22:48:52 +0000 (+0000)
Subject: Handle SOURCE_DATE_EPOCH in unsigned long long, not unitmax_t
X-Git-Tag: bedstead-3.252~6
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=528c0542ede8d861ace92ff36c4e66281c405537;p=bedstead.git

Handle SOURCE_DATE_EPOCH in unsigned long long, not unitmax_t

unsigned long long is guaranteed to be big enough.  No need to go
bigger.
---

diff --git a/bedstead.c b/bedstead.c
index fe87a1a..a4f30e4 100644
--- a/bedstead.c
+++ b/bedstead.c
@@ -99,7 +99,6 @@
 #include <assert.h>
 #include <ctype.h>
 #include <errno.h>
-#include <inttypes.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>
@@ -3145,26 +3144,26 @@ static char *
 time_for_ttx(void)
 {
 	struct tm *timeptr, tm;
-	uintmax_t epochumax;
+	unsigned long long epochull;
 	char *epochstr, *endptr, *timestr;
 
 	/* Work out what timestamp to use. */
 	if ((epochstr = getenv("SOURCE_DATE_EPOCH")) != NULL) {
 		errno = 0;
-		epochumax = strtoumax(epochstr, &endptr, 10);
+		epochull = strtoull(epochstr, &endptr, 10);
 		if (!isdigit((unsigned char)epochstr[0]) ||
 		    endptr == epochstr || *endptr != '\0' ||
 		    errno == ERANGE ||
 		    /* Allow years up to 9999. */
-		    epochumax >= 253402300800) {
+		    epochull >= 253402300800) {
 			fprintf(stderr, "Invalid SOURCE_DATE_EPOCH\n");
 			return NULL;
 		}
 		tm.tm_isdst = -1;
-		tm.tm_sec = epochumax % 60;
-		tm.tm_min = epochumax / 60 % 60;
-		tm.tm_hour = epochumax / 3600 % 24;
-		long day = epochumax / 86400;
+		tm.tm_sec = epochull % 60;
+		tm.tm_min = epochull / 60 % 60;
+		tm.tm_hour = epochull / 3600 % 24;
+		long day = epochull / 86400;
 		tm.tm_wday = (day + 4) % 7; /* 1970-01-01 was a Thursday. */
 		int y = 1970 + (day / 146097) * 400;
 		day = day % 146097;