QLatin1String: add default ctor

A pending change in uic depends on this.

[ChangeLog][QtCore][QLatin1String] Added default constructor.

Change-Id: Ie6f5dfc7b38683a488b0ff7f31404800ef5ee188
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qlatin1string/tst_qlatin1string.cpp b/tests/auto/corelib/tools/qlatin1string/tst_qlatin1string.cpp
index 5b83fe1958..290c9fc12a 100644
--- a/tests/auto/corelib/tools/qlatin1string/tst_qlatin1string.cpp
+++ b/tests/auto/corelib/tools/qlatin1string/tst_qlatin1string.cpp
@@ -46,6 +46,16 @@ private Q_SLOTS:
 
 void tst_QLatin1String::nullString()
 {
+    // default ctor
+    {
+        QLatin1String l1;
+        QCOMPARE(static_cast<const void*>(l1.data()), static_cast<const void*>(Q_NULLPTR));
+        QCOMPARE(l1.size(), 0);
+
+        QString s = l1;
+        QVERIFY(s.isNull());
+    }
+
     // from nullptr
     {
         const char *null = Q_NULLPTR;