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-rw-r--r--misc/mntent_r.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/misc/mntent_r.c b/misc/mntent_r.c
index 39fa08f2c6..b963c9af61 100644
--- a/misc/mntent_r.c
+++ b/misc/mntent_r.c
@@ -253,7 +253,7 @@ __addmntent (FILE *stream, const struct mntent *mnt)
   write_string (stream, mnt->mnt_opts);
   fprintf (stream, "%d %d\n", mnt->mnt_freq, mnt->mnt_passno);
 
-  ret = ferror (stream) != 0 || fflush (stream) != 0;
+  ret = __ferror_unlocked (stream) != 0 || fflush (stream) != 0;
 
   funlockfile (stream);