Merge remote-tracking branch 'origin/5.5' into dev

Change-Id: I40f55a4eabaf2d0d6bcda0a4b6111b27130f24f3

src/xmlpatterns/expr/qunaryexpression.cpp

@@ -59,7 +59,10 @@ Item UnaryExpression::evaluateSingleton(const DynamicContext::Ptr &context) cons
     {
         const Item item(m_operand2->evaluateSingleton(context));
 
-        if(item)
+        if (item)
+            // If the item is an untypedAtomic (or atomicString), the cast to Numeric will
+            // return a garbage object and will most likely cause a crash.
+            // There is simply no way to static cast from an instance of AtomicString to a Number.
             return item.as<Numeric>()->toNegated();
         else
             return Item();

tests/auto/xmlpatternssdk/TestCase.cpp

@@ -77,6 +77,24 @@ TestResult::List TestCase::execute(const ExecutionStage stage,
             result.append(createTestResult(TestResult::Fail, QLatin1String("Skipped this test, we crash on it.")));
             return result;
     }
+    else if (name() == QLatin1String("op-numeric-unary-minus-1"))
+    {
+            TestResult::List result;
+            result.append(createTestResult(TestResult::Fail, QLatin1String("Skipped this test, we crash on it.")));
+            return result;
+    }
+    else if (name() == QLatin1String("emptyorderdecl-13"))
+    {
+        TestResult::List result;
+        result.append(createTestResult(TestResult::Fail, QLatin1String("Skipped this test, we crash on it.")));
+        return result;
+    }
+    else if (name() == QLatin1String("emptyorderdecl-21"))
+    {
+        TestResult::List result;
+        result.append(createTestResult(TestResult::Fail, QLatin1String("Skipped this test, we crash on it.")));
+        return result;
+    }
 
     qDebug() << "Running test case: " << name();