[Feature][ZXW-33]merge ZXW 0428 version

Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/libio/putc.c b/ap/libc/glibc/glibc-2.23/libio/putc.c
new file mode 100644
index 0000000..fd23391
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/libio/putc.c
@@ -0,0 +1,44 @@
+/* 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 _IO_putc
+
+int
+_IO_putc (int c, _IO_FILE *fp)
+{
+  int result;
+  CHECK_FILE (fp, EOF);
+  _IO_acquire_lock (fp);
+  result = _IO_putc_unlocked (c, fp);
+  _IO_release_lock (fp);
+  return result;
+}
+libc_hidden_def (_IO_putc)
+
+#undef putc
+
+#ifdef weak_alias
+weak_alias (_IO_putc, putc)
+
+#ifndef _IO_MTSAFE_IO
+#undef putc_unlocked
+weak_alias (_IO_putc, putc_unlocked)
+#endif
+#endif