From cb1e87f221384d4a61cc5b91d2952ff3cfd2f9b1 Mon Sep 17 00:00:00 2001
From: Ulya Trofimovich <skvadrik@gmail.com>
Date: Fri, 13 Mar 2015 18:34:14 +0000
Subject: [PATCH] Don't segfault if span has zero length.

---
 re2c/cases.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/re2c/cases.cc b/re2c/cases.cc
index 4cb50dfb..294f1ace 100644
--- a/re2c/cases.cc
+++ b/re2c/cases.cc
@@ -3,7 +3,7 @@
 namespace re2c {
 
 Cases::Cases (const Span * span, uint span_size)
-	: def (span[span_size - 1].to)
+	: def (span_size == 0 ? NULL : span[span_size - 1].to)
 	, cases (new Case[span_size])
 	, cases_size (0)
 {
-- 
2.40.0