/*
 * Copyright status: This file is in the public domain.  In
 *  jurisdictions where a copyright holder cannot explicitly release IP
 *  into the public domain, this should be interpreted as the closest
 *  available approximation, probably something like "you are granted a
 *  license to use this file in any way you see fit".
 *
 * This is a tiny test program to test for an X server bug.
 *
 * The bug is that, when issuing a ChangeGC request with the invalid
 *  clip pixmap ID 0x2000001a, the returned error reports the invalid
 *  pixmap value as 0, not 0x2000001a.
 *
 * The XDrawPoint call is just to force use of the GC.  Without this or
 *  something like it, Xlib "helpfully" won't push the GC change, at
 *  least in some versions.
 */

#include <X11/Xlib.h>

extern const char *__progname;

static Display *disp;
static Screen *scr;
static Window rootwin;
static GC gc;

int main(void);
int main(void)
{
 XGCValues v;

 disp = XOpenDisplay(0);
 scr = XDefaultScreenOfDisplay(disp);
 rootwin = XRootWindowOfScreen(scr);
 gc = XDefaultGCOfScreen(scr);
 v.clip_mask = 0x2000001a;
 XChangeGC(disp,gc,GCClipMask,&v);
 XDrawPoint(disp,rootwin,gc,0,0);
 XSync(disp,True);
 exit(0);
}