Attachment 993 Details for Bug 1416 – Reduced testcase ("xprtcrash_bug1416.c")

Reduced testcase ("xprtcrash_bug1416.c")

xprtcrash_bug1416.c (text/plain), 1.86 KB, created by Roland Mainz on 2004-10-03 00:07:39 UTC

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Creator: Roland Mainz

Created: 2004-10-03 00:07:39 UTC

Size: 1.86 KB

patch

obsolete

>
>/* 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;
>}
>
>

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