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-rw-r--r--src/plugins/platforms/xcb/qxcbconnection.cpp8
-rw-r--r--src/plugins/platforms/xcb/qxcbconnection_basic.cpp8
2 files changed, 14 insertions, 2 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index fda0b6353e..b83c740420 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -851,7 +851,13 @@ xcb_timestamp_t QXcbConnection::getTimestamp()
xcb_window_t QXcbConnection::getSelectionOwner(xcb_atom_t atom) const
{
- return Q_XCB_REPLY(xcb_get_selection_owner, xcb_connection(), atom)->owner;
+ auto reply = Q_XCB_REPLY(xcb_get_selection_owner, xcb_connection(), atom);
+ if (!reply) {
+ qCDebug(lcQpaXcb) << "failed to query selection owner";
+ return XCB_NONE;
+ }
+
+ return reply->owner;
}
xcb_window_t QXcbConnection::getQtSelectionOwner()
diff --git a/src/plugins/platforms/xcb/qxcbconnection_basic.cpp b/src/plugins/platforms/xcb/qxcbconnection_basic.cpp
index 020412fc87..cfd4fbf9b7 100644
--- a/src/plugins/platforms/xcb/qxcbconnection_basic.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection_basic.cpp
@@ -176,7 +176,13 @@ xcb_atom_t QXcbBasicConnection::internAtom(const char *name)
if (!name || *name == 0)
return XCB_NONE;
- return Q_XCB_REPLY(xcb_intern_atom, m_xcbConnection, false, strlen(name), name)->atom;
+ auto reply = Q_XCB_REPLY(xcb_intern_atom, m_xcbConnection, false, strlen(name), name);
+ if (!reply) {
+ qCDebug(lcQpaXcb) << "failed to query intern atom: " << name;
+ return XCB_NONE;
+ }
+
+ return reply->atom;
}
QByteArray QXcbBasicConnection::atomName(xcb_atom_t atom)