Disable xcb_xlib

Telegram/SourceFiles/platform/linux/specific_linux.cpp

@@ -54,12 +54,20 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <unistd.h>
 #include <dirent.h>
 #include <pwd.h>
+#include <dlfcn.h>
 
 #include <iostream>
 
 using namespace Platform;
 using Platform::internal::WaylandIntegration;
 
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+typedef struct _XDisplay Display;
+struct XErrorEvent;
+typedef int (*XErrorHandler)(Display*, XErrorEvent*);
+typedef XErrorHandler (*LPXSETERRORHANDLER)(XErrorHandler);
+#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 typedef GApplication TDesktopApplication;
 typedef GApplicationClass TDesktopApplicationClass;
@@ -877,6 +885,20 @@ void start() {
 	LOG(("Icon theme: %1").arg(QIcon::themeName()));
 	LOG(("Fallback icon theme: %1").arg(QIcon::fallbackThemeName()));
 
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+	// tdesktop doesn't use xlib by itself,
+	// but some libraries it depends on may do
+	const auto XSetErrorHandler = reinterpret_cast<LPXSETERRORHANDLER>(
+		dlsym(RTLD_DEFAULT, "XSetErrorHandler"));
+
+	// Reset errors if any
+	(void) dlerror();
+
+	if (XSetErrorHandler) {
+		XSetErrorHandler([](Display *dpy, XErrorEvent *err) { return 0; });
+	}
+#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	InstallLauncher();
 	LaunchGApplication();

Telegram/build/docker/centos_env/Dockerfile

@@ -734,6 +734,7 @@ RUN git clone -b {{ QT_TAG }} --depth=1 git://code.qt.io/qt/qt5.git qt_{{ QT }}
 		-qt-harfbuzz \
 		-qt-pcre \
 		-no-icu \
+		-no-feature-xcb-xlib \
 		-no-feature-xcb-sm \
 		-no-feature-egl-extension-platform-wayland \
 		-static \