debugger: fix display of QObject properties

This is a backport of 5d645bfdfe

share/qtcreator/gdbmacros/dumper.py

@@ -1326,6 +1326,13 @@ class Dumper:
         nsStrippedType = self.stripNamespaceFromType(
             typedefStrippedType).replace("::", "__")
 
+        # Is this derived from QObject?
+        try:
+            item.value['staticMetaObject']
+            hasMetaObject = True
+        except:
+            hasMetaObject = False
+
         #warn(" STRIPPED: %s" % nsStrippedType)
         #warn(" DUMPERS: %s" % self.dumpers)
         #warn(" DUMPERS: %s" % (nsStrippedType in self.dumpers))
@@ -1336,6 +1343,10 @@ class Dumper:
             self.putValue(value)
             self.putNumChild(0)
 
+        elif hasMetaObject and self.useFancy:
+            self.putType(item.value.type)
+            qdump__QObject(self, item)
+
         elif nsStrippedType in self.dumpers:
             #warn("IS DUMPABLE: %s " % type)
             self.putType(item.value.type)