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ensure argument to 'string.format("%s")' does not contain zeros

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Roberto Ierusalimschy 2015-11-23 09:31:21 -02:00
parent c5112f7b15
commit 3feb702df8
1 changed files with 2 additions and 1 deletions
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3
lstrlib.c
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@ -1,5 +1,5 @@
/*
** $Id: lstrlib.c,v 1.236 2015/10/28 17:56:51 roberto Exp roberto $
** $Id: lstrlib.c,v 1.237 2015/10/29 15:11:41 roberto Exp roberto $
** Standard library for string operations and pattern-matching
** See Copyright Notice in lua.h
*/
@ -1031,6 +1031,7 @@ static int str_format (lua_State *L) {
case 's': {
size_t l;
const char *s = luaL_tolstring(L, arg, &l);
luaL_argcheck(L, l == strlen(s), arg, "string cannot contain zeros");
if (!strchr(form, '.') && l >= 100) {
/* no precision and string is too long to be formatted;
keep original string */