[src/trunk]: src/lib/libc/regex if we don't have any sets yet, don't try to l...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b0097aa83f8c
branches:  trunk
changeset: 771091:b0097aa83f8c
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Nov 08 19:25:45 2011 +0000

description:
if we don't have any sets yet, don't try to look in them.

diffstat:

 lib/libc/regex/regcomp.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (36 lines):

diff -r 688fd8b1352b -r b0097aa83f8c lib/libc/regex/regcomp.c
--- a/lib/libc/regex/regcomp.c  Tue Nov 08 19:11:19 2011 +0000
+++ b/lib/libc/regex/regcomp.c  Tue Nov 08 19:25:45 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: regcomp.c,v 1.31 2011/10/09 22:14:17 christos Exp $    */
+/*     $NetBSD: regcomp.c,v 1.32 2011/11/08 19:25:45 christos Exp $    */
 
 /*-
  * Copyright (c) 1992, 1993, 1994
@@ -76,7 +76,7 @@
 #if 0
 static char sccsid[] = "@(#)regcomp.c  8.5 (Berkeley) 3/20/94";
 #else
-__RCSID("$NetBSD: regcomp.c,v 1.31 2011/10/09 22:14:17 christos Exp $");
+__RCSID("$NetBSD: regcomp.c,v 1.32 2011/11/08 19:25:45 christos Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -761,7 +761,6 @@
 {
        cset *cs;
        int invert = 0;
-
        _DIAGASSERT(p != NULL);
 
        cs = allocset(p);
@@ -1562,6 +1561,9 @@
 
        _DIAGASSERT(g != NULL);
 
+       if (g->setbits == NULL)
+               return 0;
+
        ncols = (g->ncsets+(CHAR_BIT-1)) / CHAR_BIT;
 
        for (i = 0, col = g->setbits; i < ncols; i++, col += g->csetsize)