From ac6224d2dfa3307855af7c927a89c203266da407 Mon Sep 17 00:00:00 2001
From: Roman Telezhynskyi <kroluku@gmail.com>
Date: Thu, 20 Dec 2018 16:43:18 +0200
Subject: [PATCH] Because VDomDocument::find checks for unique id we must use
 temp cache. ref #905 (grafted from 660b90b7a2c64837148237902a3fb11e73ef49f0)

--HG--
branch : develop
---
 src/libs/ifc/xml/vdomdocument.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/libs/ifc/xml/vdomdocument.cpp b/src/libs/ifc/xml/vdomdocument.cpp
index a9acc8b00..f4444b476 100644
--- a/src/libs/ifc/xml/vdomdocument.cpp
+++ b/src/libs/ifc/xml/vdomdocument.cpp
@@ -232,10 +232,14 @@ QDomElement VDomDocument::elementById(quint32 id, const QString &tagName)
 
     if (tagName.isEmpty())
     {
-        if (VDomDocument::find(m_elementIdCache, this->documentElement(), id))
+        // Because VDomDocument::find checks for unique id we must use temp cache
+        QHash<quint32, QDomElement> tmpCache;
+        if (VDomDocument::find(tmpCache, this->documentElement(), id))
         {
-           return m_elementIdCache.value(id);
+            m_elementIdCache = tmpCache;
+            return m_elementIdCache.value(id);
         }
+        m_elementIdCache = tmpCache;
     }
     else
     {