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-rw-r--r--src/plugins/platforms/xcb/qxcbwindowsurface.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/plugins/platforms/xcb/qxcbwindowsurface.cpp b/src/plugins/platforms/xcb/qxcbwindowsurface.cpp
index 61239af..110aa10 100644
--- a/src/plugins/platforms/xcb/qxcbwindowsurface.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindowsurface.cpp
@@ -120,7 +120,8 @@ void QXcbShmImage::destroy()
void QXcbShmImage::put(xcb_window_t window, const QPoint &target, const QRect &source)
{
if (m_gc_window != window) {
- Q_XCB_CALL(xcb_free_gc(xcb_connection(), m_gc));
+ if (m_gc)
+ Q_XCB_CALL(xcb_free_gc(xcb_connection(), m_gc));
m_gc = xcb_generate_id(xcb_connection());
Q_XCB_CALL(xcb_create_gc(xcb_connection(), m_gc, window, 0, 0));