GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdlib/reallocarray.c Lines: 0 5 0.0 %
Date: 2017-11-13 Branches: 0 4 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: reallocarray.c,v 1.3 2015/09/13 08:31:47 guenther Exp $	*/
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/*
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 * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <sys/types.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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/*
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 * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
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 * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
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 */
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#define MUL_NO_OVERFLOW	((size_t)1 << (sizeof(size_t) * 4))
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void *
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reallocarray(void *optr, size_t nmemb, size_t size)
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{
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	if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
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	    nmemb > 0 && SIZE_MAX / nmemb < size) {
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		errno = ENOMEM;
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		return NULL;
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	}
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	return realloc(optr, size * nmemb);
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}
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DEF_WEAK(reallocarray);