From: Michele Ballabio <barra_cuda@katamail.com>
Date: Wed, 18 Mar 2009 20:53:27 +0000 (+0100)
Subject: git log: avoid segfault with --all-match
X-Git-Tag: v1.6.3-rc0~135
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=ba150a3fdce48e4b973db6e153e6b3ffb28a0cea;p=git.git

git log: avoid segfault with --all-match

Avoid a segfault when the command

	git log --all-match

was issued, by ignoring the option.

Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/grep.c b/grep.c
index be99b3416..f3a27d7d6 100644
--- a/grep.c
+++ b/grep.c
@@ -192,7 +192,8 @@ void compile_grep_patterns(struct grep_opt *opt)
 	 * A classic recursive descent parser would do.
 	 */
 	p = opt->pattern_list;
-	opt->pattern_expression = compile_pattern_expr(&p);
+	if (p)
+		opt->pattern_expression = compile_pattern_expr(&p);
 	if (p)
 		die("incomplete pattern expression: %s", p->pattern);
 }