+/*** Xlib ****/
+#ifdef HAVE_X11_XLIB_H
+# include <X11/Xlib.h>
+
+static pthread_mutex_t xlib_lock = PTHREAD_MUTEX_INITIALIZER;
+
+int (*XSetErrorHandler (int (*handler) (Display *, XErrorEvent *)))
+ (Display *, XErrorEvent *)
+{
+ if (override)
+ {
+ int (*ret) (Display *, XErrorEvent *);
+
+ pthread_mutex_lock (&xlib_lock);
+ LOG("Error", "%p", handler);
+ ret = CALL(XSetErrorHandler, handler);
+ pthread_mutex_unlock (&xlib_lock);
+ return ret;
+ }
+ return CALL(XSetErrorHandler, handler);
+}
+
+int (*XSetIOErrorHandler (int (*handler) (Display *))) (Display *)
+{
+ if (override)
+ {
+ int (*ret) (Display *);
+
+ pthread_mutex_lock (&xlib_lock);
+ LOG("Error", "%p", handler);
+ ret = CALL(XSetIOErrorHandler, handler);
+ pthread_mutex_unlock (&xlib_lock);
+ return ret;
+ }
+ return CALL(XSetIOErrorHandler, handler);
+}
+#endif