From: Alex Coyte <a.coyte@intel.com>
Date: Wed, 2 Aug 2017 03:36:24 +0000 (+1000)
Subject: make ComponentRepeat::vacuous_everywhere() more accurate
X-Git-Tag: v4.6.0^2~77
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9e2c3daca396309f4fb72c22f7b075ff0cba1bd;p=thirdparty%2Fvectorscan.git

make ComponentRepeat::vacuous_everywhere() more accurate
---

diff --git a/src/parser/ComponentRepeat.cpp b/src/parser/ComponentRepeat.cpp
index ff02703c..09f59d05 100644
--- a/src/parser/ComponentRepeat.cpp
+++ b/src/parser/ComponentRepeat.cpp
@@ -234,7 +234,7 @@ void ComponentRepeat::optimise(bool connected_to_sds) {
 }
 
 bool ComponentRepeat::vacuous_everywhere() const {
-    return !m_min;
+    return !m_min || sub_comp->vacuous_everywhere();
 }
 
 bool ComponentRepeat::checkEmbeddedStartAnchor(bool at_start) const {