--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgfortran/intrinsics/size.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,61 @@
+/* Implementation of the size intrinsic.
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   Contributed by Paul Brook <paul@nowt.org>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran 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 General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "libgfortran.h"
+
+index_type
+size0 (const array_t * array)
+{
+  int n;
+  index_type size;
+  index_type len;
+
+  size = 1;
+  for (n = 0; n < GFC_DESCRIPTOR_RANK (array); n++)
+    {
+      len = GFC_DESCRIPTOR_EXTENT(array,n);
+      if (len < 0)
+        len = 0;
+      size *= len;
+    }
+  return size;
+}
+iexport(size0);
+
+extern index_type size1 (const array_t * array, index_type dim);
+export_proto(size1);
+
+index_type
+size1 (const array_t * array, index_type dim)
+{
+  index_type size;
+
+  dim--;
+
+  size = GFC_DESCRIPTOR_EXTENT(array,dim);
+  if (size < 0)
+    size = 0;
+  return size;
+}