/* Testcase for https://freedesktop.org/bugzilla/show_bug.cgi?id=1416
 * ('"x11perf -copypixpix500" crashes Xprt's PostScript DDX [PsCreateAndCopyGC').
 *
 * * Preconditions to reproduce the crash:
 *   - Only one screen - the Postscript DDX screen - must be available.
 *   - No other client must be running.
 *
 * * Compile code with:
 *   % gcc -g xprtcrash_bug1416.c -L/usr/X11R6/lib -lX11 -o xprtcrash_bug1416
 * * Usage:
 *   1. Run Xprt server on display 40
 *   2. Run this tool like this: 
 *      % (DISPLAY=:40 ./xprtcrash_bug1416 )
 *
 * * Note:
 *   The crash will occur in XCopyArea() when source and destination
 *   pixmap are the same (which seems to be a quite common operation
 *   for some tookits... ;-(), regardless whether the pixmap has any
 *   content or not.
 */

#include <X11/Xlib.h>
#include <stdlib.h>
#include <stdio.h>

int main(int ac, char **av)
{
    Display        *d;
    Screen         *scr;
    int             scrnum;
    int             depth;
    Window          w;
    Pixmap          pix;
    GC              fggc;
    XGCValues       gcvalues;
    GC              pgc;

    puts("start.");

    d       = XOpenDisplay(NULL);
    XSynchronize(d, True);
    scr     = XDefaultScreenOfDisplay(d);
    scrnum  = XScreenNumberOfScreen(scr);
    depth   = 8;
    w       = XRootWindowOfScreen(scr);

    gcvalues.background = XWhitePixel(d, scrnum);
    gcvalues.foreground = XBlackPixel(d, scrnum);   

    fggc    = XCreateGC(d, w, GCBackground|GCForeground, &gcvalues);
    pix     = XCreatePixmap(d, w, 500, 500, depth);

    /* It does not matter whether the source pixmap contains any
     * content or not */
#if 0     
    pgc = XCreateGC(d, pix, GCBackground|GCForeground, &gcvalues);
    XDrawPoint(d, pix, pgc, 50, 50);
#endif

    XCopyArea(d, pix, pix, fggc, 400, 300, 500, 500, 200, 100);
        
    puts("done.");
    return EXIT_SUCCESS;
}