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empty string may cause out-of-bound access

This commit is contained in:
Roberto Ierusalimschy 2006-01-28 10:59:13 -02:00
parent 8173688542
commit 64205e91a3
1 changed files with 2 additions and 2 deletions
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4
liolib.c
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@ -1,5 +1,5 @@
/*
** $Id: liolib.c,v 2.70 2005/12/29 15:32:11 roberto Exp roberto $
** $Id: liolib.c,v 2.71 2006/01/17 13:54:02 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
@ -283,7 +283,7 @@ static int read_line (lua_State *L, FILE *f) {
return (lua_strlen(L, -1) > 0); /* check whether read something */
}
l = strlen(p);
if (p[l-1] != '\n')
if (l == 0 || p[l-1] != '\n')
luaL_addsize(&b, l);
else {
luaL_addsize(&b, l - 1); /* do not include `eol' */