Projucer: Fixed a crash in the live-build engine ComponentClassList

extras/Projucer/Source/CodeEditor/jucer_LiveBuildCodeEditor.h

@@ -231,24 +231,31 @@ private:
 
         void timerCallback() override
         {
-            Array<ClassDatabase::Class*> newClasses;
+            Array<WeakReference<ClassDatabase::Class>> newClasses;
 
             if (childProcess != nullptr)
                 const_cast <ClassDatabase::ClassList&> (childProcess->getComponentList()).globalNamespace.findClassesDeclaredInFile (newClasses, file);
 
             for (int i = newClasses.size(); --i >= 0;)
-                if (! newClasses.getUnchecked(i)->getInstantiationFlags().canBeInstantiated())
+            {
+                auto& c = newClasses.getReference (i);
+
+                if (c == nullptr || ! c->getInstantiationFlags().canBeInstantiated())
                     newClasses.remove (i);
+            }
 
             if (newClasses != classes)
             {
                 classes = newClasses;
                 deleteOverlays();
 
-                for (auto& c : classes)
+                for (auto c : classes)
                 {
-                    CodeDocument::Position pos (owner.getDocument(), c->getClassDeclarationRange().range.getStart());
-                    overlays.add (new LaunchClassOverlayComponent (owner, pos, pos, c->getName()));
+                    if (c != nullptr)
+                    {
+                        CodeDocument::Position pos (owner.getDocument(), c->getClassDeclarationRange().range.getStart());
+                        overlays.add (new LaunchClassOverlayComponent (owner, pos, pos, c->getName()));
+                    }
                 }
             }
         }
@@ -264,7 +271,7 @@ private:
         GenericCodeEditorComponent& owner;
         CompileEngineChildProcess::Ptr childProcess;
         File file;
-        Array<ClassDatabase::Class*> classes;
+        Array<WeakReference<ClassDatabase::Class>> classes;
         Array<Component::SafePointer<Component>> overlays;
 
         JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ComponentClassList)

extras/Projucer/Source/LiveBuildEngine/jucer_ClassDatabase.h

@@ -452,6 +452,7 @@ struct ClassDatabase
         InstantiationFlags instantiationFlags;
 
         JUCE_LEAK_DETECTOR (Class)
+        JUCE_DECLARE_WEAK_REFERENCEABLE (Class)
     };
 
     //==============================================================================
@@ -522,11 +523,11 @@ struct ClassDatabase
             return nullptr;
         }
 
-        void findClassesDeclaredInFile (Array<Class*>& results, const File& file)
+        void findClassesDeclaredInFile (Array<WeakReference<Class>>& results, const File& file)
         {
             for (int i = 0; i < components.size(); ++i)
             {
-                auto c = components.getReference (i);
+                auto& c = components.getReference (i);
 
                 if (c.isDeclaredInFile (file))
                     results.add (&c);