1 files changed, 6 insertions, 1 deletions
diff --git a/newlib/libc/stdio/fputwc.c b/newlib/libc/stdio/fputwc.c
index 12a6170..e2aadef 100644
--- a/newlib/libc/stdio/fputwc.c
+++ b/newlib/libc/stdio/fputwc.c
@@ -181,5 +181,10 @@ fputwc (wchar_t wc,
   struct _reent *reent = _REENT;
 
   CHECK_INIT(reent, fp);
-  return _fputwc_r (reent, wc, fp);
+  wint_t r;
+
+  _newlib_flockfile_start (fp);
+  r = __fputwc(reent, wc, fp);
+  _newlib_flockfile_end (fp);
+  return r;
 }