Novell bug #211314  (and probably others)
Maybe xorg bug #7205


The Mesa resize() function is called, while the current context _glapi_Context
is NULL. As this isn't checked in the function I assume that this should never
happen.

Actually, it seems that while the context is correctly lost, the dispatch
functions aren't cleared correctly. Resizing windows was the only (well, almost
only) function that didn't check the validity of the glx context.

Matthias Hopf <mhopf@suse.de>


--- src/mesa/drivers/x11/xm_api.c.orig 	2006-11-30 20:45:42.000000000 +0100
+++ src/mesa/drivers/x11/xm_api.c	2006-11-30 20:47:12.000000000 +0100
@@ -2101,7 +2101,11 @@ static void FXgetImage( XMesaBuffer b )
    static unsigned short pixbuf[MAX_WIDTH];
    GLuint x, y;
    GLuint width, height;
-   XMesaContext xmesa = XMESA_CONTEXT(ctx);
+   XMesaContext xmesa;
+   
+   if (! ctx)
+     return;
+   xmesa = XMESA_CONTEXT(ctx);
 
 #ifdef XFree86Server
    x = b->frontxrb->pixmap->x;
@@ -2535,7 +2539,9 @@ void
 XMesaResizeBuffers( XMesaBuffer b )
 {
    GET_CURRENT_CONTEXT(ctx);
-   XMesaContext xmctx = XMESA_CONTEXT(ctx);
-   xmesa_check_and_update_buffer_size(xmctx, b);
+   if (ctx) {
+     XMesaContext xmctx = XMESA_CONTEXT(ctx);
+     xmesa_check_and_update_buffer_size(xmctx, b);
+   }
 }