From b3925d944ed94cc76bbcbb14a799ec9beeb8d1bf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:25:44 +0200 Subject: Adding upstream version 1.21.4. Signed-off-by: Daniel Baumann --- lib/realloc.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 lib/realloc.c (limited to 'lib/realloc.c') diff --git a/lib/realloc.c b/lib/realloc.c new file mode 100644 index 0000000..1063eb0 --- /dev/null +++ b/lib/realloc.c @@ -0,0 +1,63 @@ +/* realloc() function that is glibc compatible. + + Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2023 Free Software + Foundation, Inc. + + This file 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. + + This file 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 this program. If not, see . */ + +/* written by Jim Meyering and Bruno Haible */ + +#include + +#include + +#include + +#include "xalloc-oversized.h" + +/* Call the system's realloc below. This file does not define + _GL_USE_STDLIB_ALLOC because it needs Gnulib's malloc if present. */ +#undef realloc + +/* Change the size of an allocated block of memory P to N bytes, + with error checking. If P is NULL, use malloc. Otherwise if N is zero, + free P and return NULL. */ + +void * +rpl_realloc (void *p, size_t n) +{ + if (p == NULL) + return malloc (n); + + if (n == 0) + { + free (p); + return NULL; + } + + if (xalloc_oversized (n, 1)) + { + errno = ENOMEM; + return NULL; + } + + void *result = realloc (p, n); + +#if !HAVE_MALLOC_POSIX + if (result == NULL) + errno = ENOMEM; +#endif + + return result; +} -- cgit v1.2.3