2 files changed, 7 insertions, 3 deletions
diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/CMakeLists.txt b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/CMakeLists.txt
index 24a5e31063..f9f78ad1eb 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/CMakeLists.txt
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/CMakeLists.txt
@@ -1,8 +1,6 @@
 # Copyright (C) 2022 The Qt Company Ltd.
 # SPDX-License-Identifier: BSD-3-Clause
 
-# Generated from xcb_glx.pro.
-
 #####################################################################
 ## QXcbGlxIntegrationPlugin Plugin:
 #####################################################################
@@ -27,6 +25,7 @@ qt_internal_add_plugin(QXcbGlxIntegrationPlugin
         Qt::Gui
         Qt::GuiPrivate
         Qt::XcbQpaPrivate
+    NO_UNITY_BUILD # X11 define clashes
 )
 
 ## Scopes:
diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
index 103bb1e22b..04eac027cd 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
@@ -395,14 +395,19 @@ QGLXContext::QGLXContext(Display *display, GLXContext context, void *visualInfo,
         int numConfigs = 0;
         static const int attribs[] = { GLX_FBCONFIG_ID, configId, None };
         configs = glXChooseFBConfig(m_display, screenNumber, attribs, &numConfigs);
-        if (!configs || numConfigs < 1) {
+        if (!configs) {
+            qWarning("QGLXContext: Failed to find config(invalid arguments for glXChooseFBConfig)");
+            return;
+        } else if (numConfigs < 1) {
             qWarning("QGLXContext: Failed to find config");
+            XFree(configs);
             return;
         }
         if (configs && numConfigs > 1) // this is suspicious so warn but let it continue
             qWarning("QGLXContext: Multiple configs for FBConfig ID %d", configId);
 
         m_config = configs[0];
+        XFree(configs);
     }
 
     Q_ASSERT(vinfo || m_config);