X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=lib%2Fxmalloc.c;h=9a30d67b9fa89f52325fb3af863453b11496d056;hb=92249085071a973e2c0621b0415b93d2e48bb00d;hp=585fb4b1e860c27f5140d60c9847a0f8e8beab53;hpb=c7e61475680fa226bd9b8bdd469cd66914e630f5;p=debian%2Fgzip
diff --git a/lib/xmalloc.c b/lib/xmalloc.c
index 585fb4b..9a30d67 100644
--- a/lib/xmalloc.c
+++ b/lib/xmalloc.c
@@ -1,8 +1,6 @@
/* xmalloc.c -- malloc with out of memory checking
- Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2008-2009 Free Software Foundation,
- Inc.
+ Copyright (C) 1990-2000, 2002-2006, 2008-2018 Free Software Foundation, Inc.
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
@@ -15,23 +13,21 @@
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, see . */
+ along with this program. If not, see . */
#include
-#if ! HAVE_INLINE
-# define static_inline
-#endif
+#define XALLOC_INLINE _GL_EXTERN_INLINE
+
#include "xalloc.h"
-#undef static_inline
#include
#include
/* 1 if calloc is known to be compatible with GNU calloc. This
matters if we are not also using the calloc module, which defines
- HAVE_CALLOC and supports the GNU API even on non-GNU platforms. */
-#if defined HAVE_CALLOC || defined __GLIBC__
+ HAVE_CALLOC_GNU and supports the GNU API even on non-GNU platforms. */
+#if defined HAVE_CALLOC_GNU || (defined __GLIBC__ && !defined __UCLIBC__)
enum { HAVE_GNU_CALLOC = 1 };
#else
enum { HAVE_GNU_CALLOC = 0 };
@@ -54,8 +50,16 @@ xmalloc (size_t n)
void *
xrealloc (void *p, size_t n)
{
+ if (!n && p)
+ {
+ /* The GNU and C99 realloc behaviors disagree here. Act like
+ GNU, even if the underlying realloc is C99. */
+ free (p);
+ return NULL;
+ }
+
p = realloc (p, n);
- if (!p && n != 0)
+ if (!p && n)
xalloc_die ();
return p;
}
@@ -89,11 +93,11 @@ void *
xcalloc (size_t n, size_t s)
{
void *p;
- /* Test for overflow, since some calloc implementations don't have
- proper overflow checks. But omit overflow and size-zero tests if
- HAVE_GNU_CALLOC, since GNU calloc catches overflow and never
- returns NULL if successful. */
- if ((! HAVE_GNU_CALLOC && xalloc_oversized (n, s))
+ /* Test for overflow, since objects with size greater than
+ PTRDIFF_MAX cause pointer subtraction to go awry. Omit size-zero
+ tests if HAVE_GNU_CALLOC, since GNU calloc never returns NULL if
+ successful. */
+ if (xalloc_oversized (n, s)
|| (! (p = calloc (n, s)) && (HAVE_GNU_CALLOC || n != 0)))
xalloc_die ();
return p;