From 2338d3176bdb6fb607a8ce81534e88522d8c516c Mon Sep 17 00:00:00 2001
From: Matt Kraai <kraai@debian.org>
Date: Mon, 6 Aug 2001 16:09:09 +0000
Subject: [PATCH] Use ferror(3) to check for errors, rather than inspecting
 errno.  Thanks to David Douthitt for reporting, and shame on me for writing
 such crappy code.

---
 coreutils/head.c | 4 +---
 head.c           | 4 +---
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/coreutils/head.c b/coreutils/head.c
index 0c8ef3d59..688c250b1 100644
--- a/coreutils/head.c
+++ b/coreutils/head.c
@@ -22,7 +22,6 @@
  *
  */
 
-#include <errno.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <stdlib.h>
@@ -82,10 +81,9 @@ int head_main(int argc, char **argv)
 				printf("==> %s <==\n", argv[optind]);
 			}
 			head(len, fp);
-			if (errno) {
+			if (ferror(fp)) {
 				perror_msg("%s", argv[optind]);
 				status = EXIT_FAILURE;
-				errno = 0;
 			}
 			if (optind < argc - 1)
 				putchar('\n');
diff --git a/head.c b/head.c
index 0c8ef3d59..688c250b1 100644
--- a/head.c
+++ b/head.c
@@ -22,7 +22,6 @@
  *
  */
 
-#include <errno.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <stdlib.h>
@@ -82,10 +81,9 @@ int head_main(int argc, char **argv)
 				printf("==> %s <==\n", argv[optind]);
 			}
 			head(len, fp);
-			if (errno) {
+			if (ferror(fp)) {
 				perror_msg("%s", argv[optind]);
 				status = EXIT_FAILURE;
-				errno = 0;
 			}
 			if (optind < argc - 1)
 				putchar('\n');
-- 
2.25.1