Compiler: Support >32k stack slots

Previously, the code generator would truncate the stack slots when
writing the compiled function, as that one only had a 16bit field for
them.

Also, add a debug-mode check for stack overflows to the interpreter.

Unfortunately, as it triggers a stack overflow, the test will not
reliably fail without this change.

Fixes: QTBUG-80511
Change-Id: I3019bb2de657ae4c3e1040db798a83533f854bff
Reviewed-by: Paolo Angelelli <paolo.angelelli@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
index 8824dfd019..70885eb69c 100644
--- a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
+++ b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
@@ -379,6 +379,7 @@ private slots:
     void singletonTypeWrapperLookup();
     void getThisObject();
     void semicolonAfterProperty();
+    void hugeStack();
 
 private:
 //    static void propertyVarWeakRefCallback(v8::Persistent<v8::Value> object, void* parameter);
@@ -9198,6 +9199,18 @@ void tst_qqmlecmascript::semicolonAfterProperty()
     QVERIFY(!test.isNull());
 }
 
+void tst_qqmlecmascript::hugeStack()
+{
+    QQmlEngine engine;
+    QQmlComponent component(&engine, testFileUrl("hugeStack.qml"));
+    QVERIFY(component.isReady());
+    QScopedPointer<QObject> test(component.create());
+    QVERIFY(!test.isNull());
+
+    QVariant huge = test->property("longList");
+    QCOMPARE(qvariant_cast<QJSValue>(huge).property(QLatin1String("length")).toInt(), 33059);
+}
+
 QTEST_MAIN(tst_qqmlecmascript)
 
 #include "tst_qqmlecmascript.moc"