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-rw-r--r--libio/putchar.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/libio/putchar.c b/libio/putchar.c
index bf10da9..d4d52f6 100644
--- a/libio/putchar.c
+++ b/libio/putchar.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -25,5 +25,15 @@ int
putchar (c)
int c;
{
- return _IO_putc (c, stdout);
+ int result;
+ _IO_flockfile (_IO_stdout);
+ result = _IO_putc_unlocked (c, _IO_stdout);
+ _IO_funlockfile (_IO_stdout);
+ return result;
}
+
+#ifdef _IO_MTSAFE_IO
+# undef putchar_locked
+
+weak_alias (putchar_locked, putchar)
+#endif