Fix QTest::qExec crash with no command line arguments

The documentation for QTest::qExec states that command line arguments
are optional and gives the following example:

 MyTestObject test1;
 QTest::qExec(&test1);

However, running this example leads to crash as argv[0] is accessed
without testing argc. This change fixes this bug.

Change-Id: I2ec016e02869d21b24bc11f1851a760036640191
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jason McDonald <macadder1@gmail.com>

diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index 3bd6848..11d7f68 100644 (file)
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -2114,7 +2114,8 @@ int QTest::qExec(QObject *testObject, int argc, char **argv)
     QTEST_ASSERT(metaObject);
 
     QTestResult::setCurrentTestObject(metaObject->className());
-    QTestResult::setCurrentAppname(argv[0]);
+    if (argc > 0)
+        QTestResult::setCurrentAppname(argv[0]);
 
     qtest_qParseArgs(argc, argv, false);