1 files changed, 5 insertions, 0 deletions
diff --git a/newlib/libc/stdio/clearerr.c b/newlib/libc/stdio/clearerr.c
index e242ff5e1..0923ff84d 100644
--- a/newlib/libc/stdio/clearerr.c
+++ b/newlib/libc/stdio/clearerr.c
@@ -54,12 +54,17 @@ No supporting OS subroutines are required.
 
 #include <_ansi.h>
 #include <stdio.h>
+#include "local.h"
+
+/* A subroutine version of the macro clearerr.  */
+
 #undef	clearerr
 
 _VOID
 _DEFUN(clearerr, (fp),
        FILE * fp)
 {
+  CHECK_INIT(_REENT);
   _flockfile (fp);
   __sclearerr (fp);
   _funlockfile (fp);