Mercurial > code
view port/strndup.c @ 86:ff1fcb6e385f
Fix a possible infinite loop
author | David Demelier <markand@malikania.fr> |
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date | Sun, 20 Nov 2011 18:08:11 +0100 |
parents | e48757f916ae |
children | b1a084c030c8 |
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/* * strndup.c -- duplicate a string * * Copyright (c) 2011, David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <stdio.h> #include <stdlib.h> #include <string.h> char * strndup(const char *src, size_t len) { size_t tocopy; char *dst; for (tocopy = 0; tocopy < len && src[tocopy] != '\0'; ++tocopy) continue; if ((dst = calloc(tocopy + 1, 1)) != NULL) strncpy(dst, src, tocopy); return dst; }