From b02f095b0f06333a4dc09d50d87a10559dc8e177 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 29 Feb 2012 21:40:58 +0300
Subject: [PATCH] flow: fix segfault on parse error

The code below has a syntax error which caused a segfault.  This adds a
check to take care of it.

void func(void)
{
        u8 ac_to_queue[4];
        ac_to_queue = { 0, 1, 2, 3 };
}

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 smatch_flow.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/smatch_flow.c b/smatch_flow.c
index 460950ad..ed90775b 100644
--- a/smatch_flow.c
+++ b/smatch_flow.c
@@ -126,6 +126,9 @@ void __split_expr(struct expression *expr)
 	case EXPR_ASSIGNMENT: {
 		struct expression *tmp;
 
+		if (!expr->right)
+			break;
+
 		__pass_to_client(expr, RAW_ASSIGNMENT_HOOK);
 
 		/* foo = !bar() */
-- 
2.11.4.GIT