9 files changed, 22 insertions, 16 deletions
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp
index 107ec60943..d57d7e7406 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp
@@ -277,7 +277,7 @@ GatherSourcesJob::GatherSourcesJob(QV4::ExecutionEngine *engine)
 
 void GatherSourcesJob::run()
 {
-    for (QV4::CompiledData::CompilationUnit *unit : qAsConst(engine->compilationUnits)) {
+    for (QV4::CompiledData::CompilationUnit *unit : engine->compilationUnits) {
         QString fileName = unit->fileName();
         if (!fileName.isEmpty())
             sources.append(fileName);
diff --git a/src/qml/compiler/qqmltypecompiler.cpp b/src/qml/compiler/qqmltypecompiler.cpp
index 697690984f..46f0c46b99 100644
--- a/src/qml/compiler/qqmltypecompiler.cpp
+++ b/src/qml/compiler/qqmltypecompiler.cpp
@@ -412,7 +412,7 @@ bool SignalHandlerConverter::convertSignalHandlerExpressionsToFunctionDeclaratio
                 const QString &originalPropertyName = stringAt(binding->propertyNameIndex);
 
                 auto *typeRef = resolvedTypes.value(obj->inheritedTypeNameIndex);
-                const QQmlType type = typeRef->type;
+                const QQmlType type = typeRef ? typeRef->type : QQmlType();
                 if (type.isValid()) {
                     COMPILE_EXCEPTION(binding, tr("\"%1.%2\" is not available in %3 %4.%5.").arg(typeName).arg(originalPropertyName).arg(type.module()).arg(type.majorVersion()).arg(type.minorVersion()));
                 } else {
diff --git a/src/qml/compiler/qv4compileddata.cpp b/src/qml/compiler/qv4compileddata.cpp
index d0b2e4f08a..292f5cde45 100644
--- a/src/qml/compiler/qv4compileddata.cpp
+++ b/src/qml/compiler/qv4compileddata.cpp
@@ -210,7 +210,7 @@ QV4::Function *CompilationUnit::linkToEngine(ExecutionEngine *engine)
 void CompilationUnit::unlink()
 {
     if (engine)
-        engine->compilationUnits.erase(engine->compilationUnits.find(this));
+        nextCompilationUnit.remove();
 
     if (isRegisteredWithEngine) {
         Q_ASSERT(data && propertyCaches.count() > 0 && propertyCaches.at(/*root object*/0));
diff --git a/src/qml/compiler/qv4compileddata_p.h b/src/qml/compiler/qv4compileddata_p.h
index ce54e4fae4..adf6c21cc3 100644
--- a/src/qml/compiler/qv4compileddata_p.h
+++ b/src/qml/compiler/qv4compileddata_p.h
@@ -66,6 +66,7 @@
 #ifndef V4_BOOTSTRAP
 #include <private/qqmltypenamecache_p.h>
 #include <private/qqmlpropertycache_p.h>
+#include "private/qintrusivelist_p.h"
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -880,6 +881,7 @@ struct Q_QML_PRIVATE_EXPORT CompilationUnit : public CompilationUnitBase, public
     virtual QV4::CompiledData::Unit *createUnitData(QmlIR::Document *irDocument);
 
 #ifndef V4_BOOTSTRAP
+    QIntrusiveListNode nextCompilationUnit;
     ExecutionEngine *engine;
     QQmlEnginePrivate *qmlEngine; // only used in QML environment for composite types, not in plain QJSEngine case.
 
diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp
index a5fc37b91b..7b298a302c 100644
--- a/src/qml/jsruntime/qv4engine.cpp
+++ b/src/qml/jsruntime/qv4engine.cpp
@@ -502,10 +502,8 @@ ExecutionEngine::~ExecutionEngine()
     delete identifierTable;
     delete memoryManager;
 
-    QSet<QV4::CompiledData::CompilationUnit*> remainingUnits;
-    qSwap(compilationUnits, remainingUnits);
-    for (QV4::CompiledData::CompilationUnit *unit : qAsConst(remainingUnits))
-        unit->unlink();
+    while (!compilationUnits.isEmpty())
+        (*compilationUnits.begin())->unlink();
 
     internalClasses[Class_Empty]->destroy();
     delete classPool;
@@ -970,9 +968,8 @@ void ExecutionEngine::markObjects(MarkStack *markStack)
     classPool->markObjects(markStack);
     markStack->drain();
 
-    for (QSet<CompiledData::CompilationUnit*>::ConstIterator it = compilationUnits.constBegin(), end = compilationUnits.constEnd();
-         it != end; ++it) {
-        (*it)->markObjects(markStack);
+    for (auto compilationUnit: compilationUnits) {
+        compilationUnit->markObjects(markStack);
         markStack->drain();
     }
 }
diff --git a/src/qml/jsruntime/qv4engine_p.h b/src/qml/jsruntime/qv4engine_p.h
index 3b4212020d..4549cda5b9 100644
--- a/src/qml/jsruntime/qv4engine_p.h
+++ b/src/qml/jsruntime/qv4engine_p.h
@@ -59,6 +59,7 @@
 
 #ifndef V4_BOOTSTRAP
 #  include <private/qv8engine_p.h>
+#  include <private/qv4compileddata_p.h>
 #endif
 
 namespace WTF {
@@ -314,7 +315,9 @@ public:
     String *id_buffer() const { return reinterpret_cast<String *>(jsStrings + String_buffer); }
     String *id_lastIndex() const { return reinterpret_cast<String *>(jsStrings + String_lastIndex); }
 
-    QSet<CompiledData::CompilationUnit*> compilationUnits;
+#ifndef V4_BOOTSTRAP
+    QIntrusiveList<CompiledData::CompilationUnit, &CompiledData::CompilationUnit::nextCompilationUnit> compilationUnits;
+#endif
 
     quint32 m_engineId;
 
diff --git a/src/qml/jsruntime/qv4numberobject.cpp b/src/qml/jsruntime/qv4numberobject.cpp
index 8cfa930888..d5c80dbf80 100644
--- a/src/qml/jsruntime/qv4numberobject.cpp
+++ b/src/qml/jsruntime/qv4numberobject.cpp
@@ -213,7 +213,9 @@ void NumberPrototype::method_isNaN(const BuiltinFunction *, Scope &scope, CallDa
     }
 
     double v = callData->args[0].toNumber();
-    scope.result = Encode(std::isnan(v));
+    // cast to bool explicitly as std::isnan() may give us ::isnan(), which
+    // sometimes returns an int and we don't want the Encode(int) overload.
+    scope.result = Encode(bool(std::isnan(v)));
 }
 
 void NumberPrototype::method_toString(const BuiltinFunction *, Scope &scope, CallData *callData)
diff --git a/src/qml/qml/qqmltypeloader_p.h b/src/qml/qml/qqmltypeloader_p.h
index c214f0cd43..abc0df9068 100644
--- a/src/qml/qml/qqmltypeloader_p.h
+++ b/src/qml/qml/qqmltypeloader_p.h
@@ -322,8 +322,8 @@ public:
     void invalidate();
 
 #ifdef QT_NO_QML_DEBUGGER
-    QQmlProfiler *profiler() const { return nullptr; }
-    void setProfiler(QQmlProfiler *) {}
+    quintptr profiler() const { return 0; }
+    void setProfiler(quintptr) {}
 #else
     QQmlProfiler *profiler() const { return m_profiler.data(); }
     void setProfiler(QQmlProfiler *profiler);
diff --git a/src/quickwidgets/qquickwidget.cpp b/src/quickwidgets/qquickwidget.cpp
index 6784155d25..326f0f7dd4 100644
--- a/src/quickwidgets/qquickwidget.cpp
+++ b/src/quickwidgets/qquickwidget.cpp
@@ -1392,8 +1392,6 @@ bool QQuickWidget::event(QEvent *e)
     Q_D(QQuickWidget);
 
     switch (e->type()) {
-    case QEvent::InputMethod:
-    case QEvent::InputMethodQuery:
 
     case QEvent::TouchBegin:
     case QEvent::TouchEnd:
@@ -1402,6 +1400,10 @@ bool QQuickWidget::event(QEvent *e)
         // Touch events only have local and global positions, no need to map.
         return QCoreApplication::sendEvent(d->offscreenWindow, e);
 
+    case QEvent::InputMethod:
+    case QEvent::InputMethodQuery:
+        return QCoreApplication::sendEvent(d->offscreenWindow->focusObject(), e);
+
     case QEvent::WindowChangeInternal:
         d->handleWindowChange();
         break;