From 2dcbf7b29510a99168b1ab3f7d67d21a28a70eaf Mon Sep 17 00:00:00 2001
From: Dimitri van Heesch <doxygen@gmail.com>
Date: Sun, 20 Dec 2020 21:16:11 +0100
Subject: Regression: Fixed crash while processing the Kafka package.

---
 src/classdef.cpp | 7 +++++--
 src/doxygen.cpp  | 1 -
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/classdef.cpp b/src/classdef.cpp
index a1c9287..d4c14d6 100644
--- a/src/classdef.cpp
+++ b/src/classdef.cpp
@@ -4046,8 +4046,11 @@ ClassDef *ClassDefImpl::insertTemplateInstance(const QCString &fileName,
   {
     Debug::print(Debug::Classes,0,"      New template instance class '%s''%s'\n",qPrint(name()),qPrint(templSpec));
     QCString tcname = removeRedundantWhiteSpace(localName()+templSpec);
-    templateClass = new ClassDefImpl(
-        fileName,startLine,startColumn,tcname,ClassDef::Class);
+    templateClass =
+      toClassDefMutable(
+          Doxygen::classLinkedMap->add(tcname,
+            std::unique_ptr<ClassDef>(
+              new ClassDefImpl(fileName,startLine,startColumn,tcname,ClassDef::Class))));
     templateClass->setTemplateMaster(this);
     templateClass->setOuterScope(getOuterScope());
     templateClass->setHidden(isHidden());
diff --git a/src/doxygen.cpp b/src/doxygen.cpp
index 52cd4ac..64e5ac3 100644
--- a/src/doxygen.cpp
+++ b/src/doxygen.cpp
@@ -4106,7 +4106,6 @@ static bool findTemplateInstanceRelation(const Entry *root,
   if (freshInstance)
   {
     Debug::print(Debug::Classes,0,"      found fresh instance '%s'!\n",qPrint(instanceClass->name()));
-    Doxygen::classLinkedMap->add(instanceClass->name(),std::unique_ptr<ClassDef>(instanceClass));
     instanceClass->setTemplateBaseClassNames(templateNames);
 
     // search for new template instances caused by base classes of
-- 
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