utils-std

commit: d813350977e45c9f130f7d62593011f5535ee7a4
parent f61758ada83cd313f92ab9e46862ce59dc6abaac
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Mon, 15 Sep 2025 05:12:44 +0200

libutils/err.c: save errno before calling fprintf

Diffstat:
M
libutils/err.c
8
++++++--

1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/libutils/err.c b/libutils/err.c
@@ -6,19 +6,22 @@
 
 #include "err.h"
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 void
 utils_vwarn(const char *fmt, va_list ap)
 {
+	int err = errno;
 	fprintf(stderr, "%s: warning: ", argv0);
 	if(fmt)
 	{
 		vfprintf(stderr, fmt, ap);
 		fputs(": ", stderr);
 	}
-	perror(NULL);
+	fputs(strerror(err), stderr);
 }
 
 void
@@ -32,13 +35,14 @@ utils_vwarnx(const char *fmt, va_list ap)
 _Noreturn void
 utils_verr(int status, const char *fmt, va_list ap)
 {
+	int err = errno;
 	fprintf(stderr, "%s: error: ", argv0);
 	if(fmt)
 	{
 		vfprintf(stderr, fmt, ap);
 		fputs(": ", stderr);
 	}
-	perror(NULL);
+	fputs(strerror(err), stderr);
 	exit(status);
 }