From 7c78c678069ffd424460cb7a555c8569251c9549 Mon Sep 17 00:00:00 2001
From: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Mon, 19 Jul 2021 12:50:44 +0200
Subject: code-style: change gmtime to the reentrant/thread-safe gmtime_r

No functional or performance difference (intended) because these programs are
not threaded.
---
 sfeed_atom.c  | 4 ++--
 sfeed_mbox.c  | 4 ++--
 sfeed_twtxt.c | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/sfeed_atom.c b/sfeed_atom.c
index 66698e8..96376a8 100644
--- a/sfeed_atom.c
+++ b/sfeed_atom.c
@@ -38,7 +38,7 @@ static void
 printfeed(FILE *fp, const char *feedname)
 {
 	char *fields[FieldLast];
-	struct tm *tm;
+	struct tm parsedtm, *tm;
 	time_t parsedtime;
 	ssize_t linelen;
 
@@ -75,7 +75,7 @@ printfeed(FILE *fp, const char *feedname)
 
 		parsedtime = 0;
 		if (strtotime(fields[FieldUnixTimestamp], &parsedtime) ||
-		    !(tm = gmtime(&parsedtime)))
+		    !(tm = gmtime_r(&parsedtime, &parsedtm)))
 			tm = &tmnow;
 		fprintf(stdout, "\t<updated>%04d-%02d-%02dT%02d:%02d:%02dZ</updated>\n",
 		        tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
diff --git a/sfeed_mbox.c b/sfeed_mbox.c
index 5803cea..d16b8d3 100644
--- a/sfeed_mbox.c
+++ b/sfeed_mbox.c
@@ -57,7 +57,7 @@ static void
 printfeed(FILE *fp, const char *feedname)
 {
 	char *fields[FieldLast], timebuf[32];
-	struct tm *tm;
+	struct tm parsedtm, *tm;
 	time_t parsedtime;
 	unsigned long hash;
 	ssize_t linelen;
@@ -74,7 +74,7 @@ printfeed(FILE *fp, const char *feedname)
 
 		parsedtime = 0;
 		if (!strtotime(fields[FieldUnixTimestamp], &parsedtime) &&
-		    (tm = gmtime(&parsedtime)) &&
+		    (tm = gmtime_r(&parsedtime, &parsedtm)) &&
 		    strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S +0000", tm)) {
 			printf("Date: %s\n", timebuf);
 		} else {
diff --git a/sfeed_twtxt.c b/sfeed_twtxt.c
index b7d7fc4..231ad1f 100644
--- a/sfeed_twtxt.c
+++ b/sfeed_twtxt.c
@@ -13,7 +13,7 @@ static void
 printfeed(FILE *fp, const char *feedname)
 {
 	char *fields[FieldLast];
-	struct tm *tm;
+	struct tm parsedtm, *tm;
 	time_t parsedtime;
 	ssize_t linelen;
 
@@ -24,7 +24,7 @@ printfeed(FILE *fp, const char *feedname)
 
 		parsedtime = 0;
 		if (!strtotime(fields[FieldUnixTimestamp], &parsedtime) &&
-		    (tm = gmtime(&parsedtime))) {
+		    (tm = gmtime_r(&parsedtime, &parsedtm))) {
 			fprintf(stdout, "%04d-%02d-%02dT%02d:%02d:%02dZ\t",
 			        tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
 			        tm->tm_hour, tm->tm_min, tm->tm_sec);
-- 
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