Don't check for revisions when assigning to grouped properties

This leads to wrong behavior in some cases, where we reject
valid revisions, and there is probably no case, where this could
lead to a conflict for the user of the API.

Change-Id: I1614332cf4c07c6a227551612331dd69b2ae71f3
Task-number: QTBUG-40043
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>

3 files changed, 16 insertions, 10 deletions

diff --git a/src/qml/compiler/qqmlirbuilder.cpp b/src/qml/compiler/qqmlirbuilder.cpp
index 16c4cb28ed..791355a668 100644
--- a/src/qml/compiler/qqmlirbuilder.cpp
+++ b/src/qml/compiler/qqmlirbuilder.cpp
@@ -1875,17 +1875,17 @@ QV4::IR::Expr *JSCodeGen::fallbackNameLookup(const QString &name, int line, int
 
 #ifndef V4_BOOTSTRAP
 
-QQmlPropertyData *PropertyResolver::property(const QString &name, bool *notInRevision, QObject *object, QQmlContextData *context)
+QQmlPropertyData *PropertyResolver::property(const QString &name, bool *notInRevision, RevisionCheck check)
 {
     if (notInRevision) *notInRevision = false;
 
-    QQmlPropertyData *d = cache->property(name, object, context);
+    QQmlPropertyData *d = cache->property(name, 0, 0);
 
     // Find the first property
     while (d && d->isFunction())
         d = cache->overrideData(d);
 
-    if (d && !cache->isAllowedInRevision(d)) {
+    if (check != IgnoreRevision && d && !cache->isAllowedInRevision(d)) {
         if (notInRevision) *notInRevision = true;
         return 0;
     } else {
@@ -1894,11 +1894,11 @@ QQmlPropertyData *PropertyResolver::property(const QString &name, bool *notInRev
 }
 
 
-QQmlPropertyData *PropertyResolver::signal(const QString &name, bool *notInRevision, QObject *object, QQmlContextData *context)
+QQmlPropertyData *PropertyResolver::signal(const QString &name, bool *notInRevision)
 {
     if (notInRevision) *notInRevision = false;
 
-    QQmlPropertyData *d = cache->property(name, object, context);
+    QQmlPropertyData *d = cache->property(name, 0, 0);
     if (notInRevision) *notInRevision = false;
 
     while (d && !(d->isFunction()))
@@ -1914,7 +1914,7 @@ QQmlPropertyData *PropertyResolver::signal(const QString &name, bool *notInRevis
     if (name.endsWith(QStringLiteral("Changed"))) {
         QString propName = name.mid(0, name.length() - static_cast<int>(strlen("Changed")));
 
-        d = property(propName, notInRevision, object, context);
+        d = property(propName, notInRevision);
         if (d)
             return cache->signal(d->notifyIndex);
     }
diff --git a/src/qml/compiler/qqmlirbuilder_p.h b/src/qml/compiler/qqmlirbuilder_p.h
index 9a659f4d72..633a4cc2fb 100644
--- a/src/qml/compiler/qqmlirbuilder_p.h
+++ b/src/qml/compiler/qqmlirbuilder_p.h
@@ -460,10 +460,15 @@ struct Q_QML_EXPORT PropertyResolver
         return cache->property(index);
     }
 
-    QQmlPropertyData *property(const QString &name, bool *notInRevision = 0, QObject *object = 0, QQmlContextData *context = 0);
+    enum RevisionCheck {
+        CheckRevision,
+        IgnoreRevision
+    };
+
+    QQmlPropertyData *property(const QString &name, bool *notInRevision = 0, RevisionCheck check = CheckRevision);
 
     // This code must match the semantics of QQmlPropertyPrivate::findSignalByName
-    QQmlPropertyData *signal(const QString &name, bool *notInRevision, QObject *object = 0, QQmlContextData *context = 0);
+    QQmlPropertyData *signal(const QString &name, bool *notInRevision);
 
     QQmlPropertyCache *cache;
 };
diff --git a/src/qml/compiler/qqmltypecompiler.cpp b/src/qml/compiler/qqmltypecompiler.cpp
index cde7a2acb4..6fd15d1eb8 100644
--- a/src/qml/compiler/qqmltypecompiler.cpp
+++ b/src/qml/compiler/qqmltypecompiler.cpp
@@ -1859,6 +1859,7 @@ bool QQmlPropertyValidator::validateObject(int objectIndex, const QV4::CompiledD
         }
 
         bool bindingToDefaultProperty = false;
+        bool isGroupProperty = instantiatingBinding && instantiatingBinding->type == QV4::CompiledData::Binding::Type_GroupProperty;
 
         bool notInRevision = false;
         QQmlPropertyData *pd = 0;
@@ -1867,7 +1868,7 @@ bool QQmlPropertyValidator::validateObject(int objectIndex, const QV4::CompiledD
                 || binding->flags & QV4::CompiledData::Binding::IsSignalHandlerObject)
                 pd = propertyResolver.signal(name, &notInRevision);
             else
-                pd = propertyResolver.property(name, &notInRevision);
+                pd = propertyResolver.property(name, &notInRevision, isGroupProperty ? QmlIR::PropertyResolver::IgnoreRevision : QmlIR::PropertyResolver::CheckRevision);
 
             if (notInRevision) {
                 QString typeName = stringAt(obj->inheritedTypeNameIndex);
@@ -1879,7 +1880,7 @@ bool QQmlPropertyValidator::validateObject(int objectIndex, const QV4::CompiledD
                 }
             }
         } else {
-           if (instantiatingBinding && instantiatingBinding->type == QV4::CompiledData::Binding::Type_GroupProperty)
+           if (isGroupProperty)
                COMPILE_EXCEPTION(binding, tr("Cannot assign a value directly to a grouped property"));
 
            pd = defaultProperty;