1 files changed, 2 insertions, 0 deletions
diff --git a/newlib/libc/stdio/ferror.c b/newlib/libc/stdio/ferror.c
index 6f665d4c8..ea701bec7 100644
--- a/newlib/libc/stdio/ferror.c
+++ b/newlib/libc/stdio/ferror.c
@@ -55,6 +55,7 @@ static char sccsid[] = "%W% (Berkeley) %G%";
 
 #include <_ansi.h>
 #include <stdio.h>
+#include "local.h"
 
 /* A subroutine version of the macro ferror.  */
 
@@ -65,6 +66,7 @@ _DEFUN(ferror, (fp),
        FILE * fp)
 {
   int result;
+  CHECK_INIT(_REENT);
   _flockfile (fp);
   result = __sferror (fp);
   _funlockfile (fp);