qt5-qtdeclarative/0014-Qml-Don-t-crash-when-a...

114 lines
4.4 KiB
Diff

From 7be5422134167fe6d9fd44ef683f407bbda1bce7 Mon Sep 17 00:00:00 2001
From: Ulf Hermann <ulf.hermann@qt.io>
Date: Tue, 30 Nov 2021 14:39:48 +0100
Subject: [PATCH 14/19] Qml: Don't crash when as-casting to type with errors
Such types don't have a compilation unit, but we still know their names.
Pick-to: 6.2
Fixes: QTBUG-98792
Change-Id: I2db8dea3a5a02ec1492f7f7a054fd3ad4c6ad69a
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
(cherry picked from commit e0cd201e91ae64b9c03e0128cd17656b00611fbb)
---
src/qml/qml/qqmltypewrapper.cpp | 6 ++++--
src/qml/types/qqmlconnections.cpp | 2 +-
tests/auto/qml/qqmllanguage/data/Broken.qml | 5 +++++
tests/auto/qml/qqmllanguage/data/asBroken.qml | 6 ++++++
tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp | 16 ++++++++++++++++
5 files changed, 32 insertions(+), 3 deletions(-)
create mode 100644 tests/auto/qml/qqmllanguage/data/Broken.qml
create mode 100644 tests/auto/qml/qqmllanguage/data/asBroken.qml
diff --git a/src/qml/qml/qqmltypewrapper.cpp b/src/qml/qml/qqmltypewrapper.cpp
index 175de8b936..a6ba4b8cb3 100644
--- a/src/qml/qml/qqmltypewrapper.cpp
+++ b/src/qml/qml/qqmltypewrapper.cpp
@@ -419,8 +419,10 @@ ReturnedValue QQmlTypeWrapper::virtualInstanceOf(const Object *typeObject, const
return Encode(false);
QQmlRefPointer<QQmlTypeData> td = qenginepriv->typeLoader.getType(typeWrapper->d()->type().sourceUrl());
- ExecutableCompilationUnit *cu = td->compilationUnit();
- myQmlType = qenginepriv->metaObjectForType(cu->metaTypeId);
+ if (ExecutableCompilationUnit *cu = td->compilationUnit())
+ myQmlType = qenginepriv->metaObjectForType(cu->metaTypeId);
+ else
+ return Encode(false); // It seems myQmlType has some errors, so we could not compile it.
} else {
myQmlType = qenginepriv->metaObjectForType(myTypeId);
}
diff --git a/src/qml/types/qqmlconnections.cpp b/src/qml/types/qqmlconnections.cpp
index 29ed62cd39..aba930dfe1 100644
--- a/src/qml/types/qqmlconnections.cpp
+++ b/src/qml/types/qqmlconnections.cpp
@@ -338,7 +338,7 @@ void QQmlConnections::connectSignalsToMethods()
&& propName.at(2).isUpper()) {
qmlWarning(this) << tr("Detected function \"%1\" in Connections element. "
"This is probably intended to be a signal handler but no "
- "signal of the target matches the name.").arg(propName);
+ "signal of the \"%2\" target matches the name.").arg(propName).arg(target->metaObject()->className());
}
}
}
diff --git a/tests/auto/qml/qqmllanguage/data/Broken.qml b/tests/auto/qml/qqmllanguage/data/Broken.qml
new file mode 100644
index 0000000000..e24d9112a8
--- /dev/null
+++ b/tests/auto/qml/qqmllanguage/data/Broken.qml
@@ -0,0 +1,5 @@
+import QtQml 2.15
+
+QtObject {
+ notThere: 5
+}
diff --git a/tests/auto/qml/qqmllanguage/data/asBroken.qml b/tests/auto/qml/qqmllanguage/data/asBroken.qml
new file mode 100644
index 0000000000..bd88d14c76
--- /dev/null
+++ b/tests/auto/qml/qqmllanguage/data/asBroken.qml
@@ -0,0 +1,6 @@
+import QtQml 2.15
+
+QtObject {
+ id: self
+ property var selfAsBroken: self as Broken
+}
diff --git a/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp b/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
index bffb62c59e..97cc64991f 100644
--- a/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
+++ b/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
@@ -336,6 +336,7 @@ private slots:
void bareInlineComponent();
void hangOnWarning();
+ void objectAsBroken();
void ambiguousContainingType();
@@ -5876,6 +5877,21 @@ void tst_qqmllanguage::ambiguousContainingType()
}
}
+void tst_qqmllanguage::objectAsBroken()
+{
+ QQmlEngine engine;
+ QQmlComponent c(&engine, testFileUrl("asBroken.qml"));
+ QVERIFY2(c.isReady(), qPrintable(c.errorString()));
+ QScopedPointer<QObject> o(c.create());
+ QVERIFY(!o.isNull());
+ QVariant selfAsBroken = o->property("selfAsBroken");
+ QVERIFY(selfAsBroken.isValid());
+ // QCOMPARE(selfAsBroken.metaType(), QMetaType::fromType<std::nullptr_t>());
+
+ QQmlComponent b(&engine, testFileUrl("Broken.qml"));
+ QVERIFY(b.isError());
+}
+
QTEST_MAIN(tst_qqmllanguage)
#include "tst_qqmllanguage.moc"
--
2.40.0