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small bug in strfind.

This commit is contained in:
Roberto Ierusalimschy 1996-03-21 19:18:08 -03:00
parent 7ecc2ea597
commit f1d0276684
1 changed files with 2 additions and 2 deletions
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4
strlib.c
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@ -3,7 +3,7 @@
** String library to LUA
*/
char *rcs_strlib="$Id: strlib.c,v 1.19 1996/03/14 15:52:35 roberto Exp roberto $";
char *rcs_strlib="$Id: strlib.c,v 1.20 1996/03/19 22:28:37 roberto Exp roberto $";
#include <string.h>
#include <stdio.h>
@ -75,7 +75,7 @@ static void str_find (void)
char *s2 = lua_check_string(2, "strfind");
int init = (lua_getparam(3) == LUA_NOOBJECT) ? 0 :
(int)lua_check_number(3, "strfind")-1;
char *f = strstr(s1+init,s2);
char *f = (init>=0 && init<=strlen(s1)) ? strstr(s1+init,s2) : NULL;
if (f != NULL)
{
int pos = f-s1+1;