From: Mike Yuan <me@yhndnzj.com>
Date: Wed, 25 Mar 2026 15:03:07 +0000 (+0100)
Subject: creds: minor tweak for fputc() error handling
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=734af2908a803c17ad587da7db334fc225f18dde;p=thirdparty%2Fsystemd.git

creds: minor tweak for fputc() error handling

Let's do not assume errno is set for return values other than
EOF, following what we do in fileio.c.
---

diff --git a/src/creds/creds.c b/src/creds/creds.c
index 3103686a9f8..3b1cc8e86b6 100644
--- a/src/creds/creds.c
+++ b/src/creds/creds.c
@@ -416,7 +416,7 @@ static int print_newline(FILE *f, const char *data, size_t l) {
                         return 0;
         }
 
-        if (fputc('\n', f) != '\n')
+        if (fputc('\n', f) == EOF)
                 return log_error_errno(errno, "Failed to write trailing newline: %m");
 
         return 1;