Merge remote-tracking branch 'origin/5.6' into dev

Conflicts:
	src/gui/painting/painting.pri
	src/plugins/platforms/xcb/qxcbconnection.cpp
	tests/auto/corelib/thread/qthreadstorage/qthreadstorage.pro
	tests/auto/corelib/tools/qlocale/test/test.pro
	tests/auto/gui/kernel/qwindow/tst_qwindow.cpp
	tools/configure/environment.cpp

Change-Id: I9c40f458b89b2c206de2d2c24e90b5f679c93495

1 files changed, 7 insertions, 4 deletions

diff --git a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
index 8097cce709..1a123703a5 100644
--- a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
@@ -406,6 +406,9 @@ XInput2TouchDeviceData *QXcbConnection::touchDeviceForId(int id)
 #endif // XCB_USE_XINPUT22
             case XIValuatorClass: {
                 XIValuatorClassInfo *vci = reinterpret_cast<XIValuatorClassInfo *>(classinfo);
+                // Some devices (mice) report a resolution of 0; they will be excluded later,
+                // for now just prevent a division by zero
+                const int vciResolution = vci->resolution ? vci->resolution : 1;
                 if (vci->label == atom(QXcbAtom::AbsMTPositionX))
                     caps |= QTouchDevice::Position | QTouchDevice::NormalizedPosition;
                 else if (vci->label == atom(QXcbAtom::AbsMTTouchMajor))
@@ -414,16 +417,16 @@ XInput2TouchDeviceData *QXcbConnection::touchDeviceForId(int id)
                     caps |= QTouchDevice::Pressure;
                 else if (vci->label == atom(QXcbAtom::RelX)) {
                     hasRelativeCoords = true;
-                    dev->size.setWidth((vci->max - vci->min) * 1000.0 / vci->resolution);
+                    dev->size.setWidth((vci->max - vci->min) * 1000.0 / vciResolution);
                 } else if (vci->label == atom(QXcbAtom::RelY)) {
                     hasRelativeCoords = true;
-                    dev->size.setHeight((vci->max - vci->min) * 1000.0 / vci->resolution);
+                    dev->size.setHeight((vci->max - vci->min) * 1000.0 / vciResolution);
                 } else if (vci->label == atom(QXcbAtom::AbsX)) {
                     caps |= QTouchDevice::Position;
-                    dev->size.setHeight((vci->max - vci->min) * 1000.0 / vci->resolution);
+                    dev->size.setHeight((vci->max - vci->min) * 1000.0 / vciResolution);
                 } else if (vci->label == atom(QXcbAtom::AbsY)) {
                     caps |= QTouchDevice::Position;
-                    dev->size.setWidth((vci->max - vci->min) * 1000.0 / vci->resolution);
+                    dev->size.setWidth((vci->max - vci->min) * 1000.0 / vciResolution);
                 }
                 break;
             }