diff options
Diffstat (limited to 'src/lstrlib.c')
| -rw-r--r-- | src/lstrlib.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/lstrlib.c b/src/lstrlib.c index ca333ba1..1b4763d4 100644 --- a/src/lstrlib.c +++ b/src/lstrlib.c @@ -1,5 +1,5 @@ /* -** $Id: lstrlib.c,v 1.132.1.3 2007/12/28 15:32:23 roberto Exp $ +** $Id: lstrlib.c,v 1.132.1.4 2008/07/11 17:27:21 roberto Exp $ ** Standard library for string operations and pattern-matching ** See Copyright Notice in lua.h */ @@ -35,7 +35,8 @@ static int str_len (lua_State *L) { static ptrdiff_t posrelat (ptrdiff_t pos, size_t len) { /* relative string position: negative means back from end */ - return (pos>=0) ? pos : (ptrdiff_t)len+pos+1; + if (pos < 0) pos += (ptrdiff_t)len + 1; + return (pos >= 0) ? pos : 0; } |