fix GC-related crash

For some reason our Global Object is not marked by the collector.
This fixes the case when you invoke GC explicitly by calling
collectGarbage(), but the issue is probably still there when GC
is invoked implicitly.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/script/api/qscriptengine.cpp b/src/script/api/qscriptengine.cpp
index c88f464..df31acd 100644
--- a/src/script/api/qscriptengine.cpp
+++ b/src/script/api/qscriptengine.cpp
@@ -3130,9 +3130,11 @@ QStringList QScriptEngine::importedExtensions() const
 void QScriptEngine::collectGarbage()
 {
     Q_D(QScriptEngine);
+    // ### why isn't the global object always marked by the Collector?
+    if (!d->globalObject->marked())
+        d->globalObject->mark();
     JSC::JSLock lock(false);
-    JSC::ExecState* exec = d->globalObject->globalExec();
-    exec->heap()->collect();
+    d->globalData->heap.collect();
 }
 
 /*!