Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 54 insertions, 0 deletions

diff --git a/REORG.TODO/debug/fread_chk.c b/REORG.TODO/debug/fread_chk.c
new file mode 100644
index 0000000000..b99a4e477f
--- /dev/null
+++ b/REORG.TODO/debug/fread_chk.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1993-2017 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 <stdio.h>
+
+size_t
+__fread_chk (void *__restrict ptr, size_t ptrlen,
+	     size_t size, size_t n, FILE *__restrict stream)
+{
+  size_t bytes_requested = size * n;
+  if (__builtin_expect ((n | size)
+			>= (((size_t) 1) << (8 * sizeof (size_t) / 2)), 0))
+    {
+      if (size != 0 && bytes_requested / size != n)
+	__chk_fail ();
+    }
+
+  if (__glibc_unlikely (bytes_requested > ptrlen))
+    __chk_fail ();
+
+  CHECK_FILE (stream, 0);
+  if (bytes_requested == 0)
+    return 0;
+
+  size_t bytes_read;
+  _IO_acquire_lock (stream);
+  bytes_read = _IO_sgetn (stream, (char *) ptr, bytes_requested);
+  _IO_release_lock (stream);
+  return bytes_requested == bytes_read ? n : bytes_read / size;
+}