1 files changed, 5 insertions, 1 deletions
diff --git a/newlib/libc/stdio/ferror.c b/newlib/libc/stdio/ferror.c
index 19fa78d14..ef17fd89d 100644
--- a/newlib/libc/stdio/ferror.c
+++ b/newlib/libc/stdio/ferror.c
@@ -63,5 +63,9 @@ int
 _DEFUN (ferror, (fp),
 	FILE * fp)
 {
-  return __sferror (fp);
+  int result;
+  _flockfile(fp);
+  result = __sferror (fp);
+  _funlockfile(fp);
+  return result;
 }