[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/libio/iogets.c b/ap/libc/glibc/glibc-2.23/libio/iogets.c
new file mode 100644
index 0000000..4e2c99f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/libio/iogets.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 1993-2016 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/>.
+
+ As a special exception, if you link the code in this file with
+ files compiled with a GNU compiler to produce an executable,
+ that does not cause the resulting executable to be covered by
+ the GNU Lesser General Public License. This exception does not
+ however invalidate any other reasons why the executable file
+ might be covered by the GNU Lesser General Public License.
+ This exception applies to code released by its copyright holders
+ in files containing the exception. */
+
+#include "libioP.h"
+#include <limits.h>
+
+char *
+_IO_gets (char *buf)
+{
+ _IO_size_t count;
+ int ch;
+ char *retval;
+
+ _IO_acquire_lock (_IO_stdin);
+ ch = _IO_getc_unlocked (_IO_stdin);
+ if (ch == EOF)
+ {
+ retval = NULL;
+ goto unlock_return;
+ }
+ if (ch == '\n')
+ count = 0;
+ else
+ {
+ /* This is very tricky since a file descriptor may be in the
+ non-blocking mode. The error flag doesn't mean much in this
+ case. We return an error only when there is a new error. */
+ int old_error = _IO_stdin->_IO_file_flags & _IO_ERR_SEEN;
+ _IO_stdin->_IO_file_flags &= ~_IO_ERR_SEEN;
+ buf[0] = (char) ch;
+ count = _IO_getline (_IO_stdin, buf + 1, INT_MAX, '\n', 0) + 1;
+ if (_IO_stdin->_IO_file_flags & _IO_ERR_SEEN)
+ {
+ retval = NULL;
+ goto unlock_return;
+ }
+ else
+ _IO_stdin->_IO_file_flags |= old_error;
+ }
+ buf[count] = 0;
+ retval = buf;
+unlock_return:
+ _IO_release_lock (_IO_stdin);
+ return retval;
+}
+
+#ifdef weak_alias
+weak_alias (_IO_gets, gets)
+#endif
+
+#ifdef _LIBC
+link_warning (gets, "the `gets' function is dangerous and should not be used.")
+#endif