[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/libio/putchar.c b/ap/libc/glibc/glibc-2.23/libio/putchar.c
new file mode 100644
index 0000000..5df3dec
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/libio/putchar.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 1991-2016 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "libioP.h"
+#include "stdio.h"
+
+#undef putchar
+
+int
+putchar (int c)
+{
+ int result;
+ _IO_acquire_lock (_IO_stdout);
+ result = _IO_putc_unlocked (c, _IO_stdout);
+ _IO_release_lock (_IO_stdout);
+ return result;
+}
+
+#if defined weak_alias && !defined _IO_MTSAFE_IO
+#undef putchar_unlocked
+weak_alias (putchar, putchar_unlocked)
+#endif