1 files changed, 14 insertions, 1 deletions

diff --git a/lib/libc/stdio/getc.c b/lib/libc/stdio/getc.c
index 1e900cd6e64a..c0726ee2db64 100644
--- a/lib/libc/stdio/getc.c
+++ b/lib/libc/stdio/getc.c
@@ -39,14 +39,27 @@ static char sccsid[] = "@(#)getc.c	8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
 
 #include <stdio.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+#endif
 
 /*
  * A subroutine version of the macro getc.
  */
 #undef getc
 
+int
 getc(fp)
 	register FILE *fp;
 {
-	return (__sgetc(fp));
+	int retval;
+#ifdef _THREAD_SAFE
+	_thread_flockfile(fp,__FILE__,__LINE__);
+#endif
+	retval = __sgetc(fp);
+#ifdef _THREAD_SAFE
+	_thread_funlockfile(fp);
+#endif
+	return (retval);
 }