From: helly <helly@642ea486-5414-0410-9d7f-a0204ed87703>
Date: Wed, 12 May 2004 09:46:18 +0000 (+0000)
Subject: Fix possible SEGV
X-Git-Tag: 0.13.6~709
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6e01668c1fcc9c33e66de243398cdc39084912df;p=re2c

Fix possible SEGV
---

diff --git a/dfa.h b/dfa.h
index 6bd78248..9761e4e4 100644
--- a/dfa.h
+++ b/dfa.h
@@ -145,7 +145,7 @@ inline bool Action::isMatch() const
 	{ return false; }
 
 inline bool Action::readAhead() const
-	{ return !isMatch() || !state->next->action->isRule(); }
+	{ return !isMatch() || (state && state->next && state->next->action && !state->next->action->isRule()); }
 
 inline Match::Match(State *s) : Action(s)
     { }