Imported from ../bash-1.14.7.tar.gz.

lib/malloclib/morecore.c

@@ -0,0 +1,44 @@
+/* Copyright (C) 1991, 1992 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 General Public License as published by
+the Free Software Foundation; either version 2, 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU C Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifndef	_MALLOC_INTERNAL
+#define	_MALLOC_INTERNAL
+#include <malloc.h>
+#endif
+
+#ifndef	__GNU_LIBRARY__
+#define	__sbrk	sbrk
+#endif
+
+extern __ptr_t __sbrk __P ((int increment));
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+/* Allocate INCREMENT more bytes of data space,
+   and return the start of data space, or NULL on errors.
+   If INCREMENT is negative, shrink data space.  */
+__ptr_t
+__default_morecore (increment)
+     ptrdiff_t increment;
+{
+  __ptr_t result = __sbrk ((int) increment);
+  if (result == (__ptr_t) -1)
+    return NULL;
+  return result;
+}