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| author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2003-03-14 15:59:53 -0300 |
|---|---|---|
| committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2003-03-14 15:59:53 -0300 |
| commit | d8a3a00d8481a13a94247c3dc33f43ebf3569e0b (patch) | |
| tree | bcf9577770b8fd912e9e5aa1cead1adf5f49efa4 /lstrlib.c | |
| parent | c9ea94ec92a8dc02ff689aea3485c891780128b9 (diff) | |
| download | lua-github-d8a3a00d8481a13a94247c3dc33f43ebf3569e0b.tar.gz | |
`string.find' also accepts out-of-range indices
Diffstat (limited to 'lstrlib.c')
| -rw-r--r-- | lstrlib.c | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -1,5 +1,5 @@ /* -** $Id: lstrlib.c,v 1.94 2003/02/12 09:10:41 roberto Exp roberto $ +** $Id: lstrlib.c,v 1.95 2003/03/11 12:24:34 roberto Exp roberto $ ** Standard library for string operations and pattern-matching ** See Copyright Notice in lua.h */ @@ -478,7 +478,8 @@ static int str_find (lua_State *L) { const char *s = luaL_checklstring(L, 1, &l1); const char *p = luaL_checklstring(L, 2, &l2); sint32 init = posrelat(luaL_optlong(L, 3, 1), l1) - 1; - luaL_argcheck(L, 0 <= init && (size_t)(init) <= l1, 3, "out of range"); + if (init < 0) init = 0; + else if ((size_t)(init) > l1) init = l1; if (lua_toboolean(L, 4) || /* explicit request? */ strpbrk(p, SPECIALS) == NULL) { /* or no special characters? */ /* do a plain search */ |