X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fcalloc.c;h=4ac06d2f6016253fec880cd69f50291f7b304ea7;hb=b344de996cd51f8a2f2558a3172016b64d99c622;hp=c8b1e1ebabd0d29c791b333b6f16234b45ebc254;hpb=0632e115747ff96e93330c88f536d7354a7ce507;p=gnulib.git
diff --git a/lib/calloc.c b/lib/calloc.c
index c8b1e1eba..4ac06d2f6 100644
--- a/lib/calloc.c
+++ b/lib/calloc.c
@@ -1,11 +1,11 @@
/* calloc() function that is glibc compatible.
- This wrapper function is required at least on Tru64 UNIX 5.1.
- Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+ This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
+ Copyright (C) 2004-2007, 2009-2011 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ This program 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 Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -13,32 +13,61 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see . */
-/* written by Jim Meyering */
+/* written by Jim Meyering and Bruno Haible */
#include
-#undef calloc
+/* Only the AC_FUNC_CALLOC macro defines 'calloc' already in config.h. */
+#ifdef calloc
+# define NEED_CALLOC_GNU 1
+# undef calloc
+/* Whereas the gnulib module 'calloc-gnu' defines HAVE_CALLOC_GNU. */
+#elif GNULIB_CALLOC_GNU && !HAVE_CALLOC_GNU
+# define NEED_CALLOC_GNU 1
+#endif
+/* Specification. */
#include
+#include
+
+/* Call the system's calloc below. */
+#undef calloc
+
/* Allocate and zero-fill an NxS-byte block of memory from the heap.
If N or S is zero, allocate and zero-fill a 1-byte block. */
void *
rpl_calloc (size_t n, size_t s)
{
- size_t bytes;
+ void *result;
+#if NEED_CALLOC_GNU
if (n == 0 || s == 0)
- return calloc (1, 1);
+ {
+ n = 1;
+ s = 1;
+ }
+ else
+ {
+ /* Defend against buggy calloc implementations that mishandle
+ size_t overflow. */
+ size_t bytes = n * s;
+ if (bytes / s != n)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ }
+#endif
+
+ result = calloc (n, s);
- /* Defend against buggy calloc implementations that mishandle
- size_t overflow. */
- bytes = n * s;
- if (bytes / s != n)
- return NULL;
+#if !HAVE_CALLOC_POSIX
+ if (result == NULL)
+ errno = ENOMEM;
+#endif
- return calloc (n, s);
+ return result;
}