Fix infinite recursion when changing geometry on Mac

Some complex widgets might get a negatively sized rectangle when
calling QWidgetPrivate:setGeometry_sys_helper(), triggering a infinite
recursion. Normalizing the rectangle size before checking for size
change is enough to break this infinite recursion.

Task-number: QTBUG-17333
Change-Id: I4682c3088ea53fb9f28f746c8264f573b5284825
Reviewed-on: http://codereview.qt.nokia.com/156
Reviewed-by: Olivier Goffart <olivier.goffart@nokia.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/auto/qwidget/tst_qwidget.cpp b/tests/auto/qwidget/tst_qwidget.cpp
index f070d24ec3..eb110a246e 100644
--- a/tests/auto/qwidget/tst_qwidget.cpp
+++ b/tests/auto/qwidget/tst_qwidget.cpp
@@ -67,6 +67,7 @@
 #include <QtGui/qpaintengine.h>
 #include <private/qbackingstore_p.h>
 #include <qmenubar.h>
+#include <qtableview.h>
 
 #include <QtGui/QGraphicsView>
 #include <QtGui/QGraphicsProxyWidget>
@@ -403,6 +404,7 @@ private slots:
     void taskQTBUG_11373();
 #endif // QT_MAC_USE_COCOA
 #endif
+    void taskQTBUG_17333_ResizeInfiniteRecursion();
 
     void nativeChildFocus();
 
@@ -10464,6 +10466,18 @@ void tst_QWidget::taskQTBUG_11373()
 #endif // QT_MAC_USE_COCOA
 #endif
 
+void tst_QWidget::taskQTBUG_17333_ResizeInfiniteRecursion()
+{
+    QTableView tb;
+    const char *s = "border: 1px solid;";
+    tb.setStyleSheet(s);
+    tb.show();
+
+    QTest::qWaitForWindowShown(&tb);
+    tb.setGeometry(QRect(100, 100, 0, 100));
+    // No crash, it works.
+}
+
 void tst_QWidget::nativeChildFocus()
 {
     QWidget w;