Mercurial > hg > index.cgi
view lwlib/lw_string.c @ 500:733fd05ca2a8
Initialize temporary line structures properly
Apparently, not initializing all elements of a struct can lead to random
problems if something somewhere decides it should reference one of those
uninitialized fields. Who knew. Set the temporary line_t structure to zeroes
before passing it into anything when calculating the stuff for "object"
output which should at least make things predictable.
This seems to fix a crash reported by "strick" in Discord.
author | William Astle <lost@l-w.ca> |
---|---|
date | Thu, 29 Aug 2019 17:00:17 -0600 |
parents | 8e25147c2aa8 |
children |
line wrap: on
line source
/* lw_string.c Copyright © 2010 William Astle This file is part of LWTOOLS. LWTOOLS 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 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 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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 <http://www.gnu.org/licenses/>. */ #include <string.h> #include <stdlib.h> #include "lw_alloc.h" #include "lw_string.h" char *lw_strdup(const char *s) { char *r; if (!s) s = "(null)"; r = lw_alloc(strlen(s) + 1); strcpy(r, s); return r; } char *lw_strndup(const char *s, int len) { char *r; int sl; sl = strlen(s); if (sl > len) sl = len; r = lw_alloc(sl + 1); memmove(r, s, sl); r[sl] = '\0'; return r; } char *lw_token(const char *s, int sep, const char **ap) { const char *p; char *r; if (!s) return NULL; p = strchr(s, sep); if (!p) { if (ap) *ap = NULL; return lw_strdup(s); } r = lw_alloc(p - s + 1); strncpy(r, (char *)s, p - s); r[p - s] = '\0'; if (ap) { while (*p && *p == sep) p++; *ap = p; } return r; }