radeon/r200/r300/r600: fix blit BO buffer validation

[mesa.git] / src / glx / glx_pbuffer.c

diff --git a/src/glx/glx_pbuffer.c b/src/glx/glx_pbuffer.c
index 4c122ba6ddc99c109b4414bfe0b468acecd1aaec..52e067165c8c1a127f9ab289a8bd4708c4aef079 100644 (file)
--- a/src/glx/glx_pbuffer.c
+++ b/src/glx/glx_pbuffer.c
@@ -379,7 +379,8 @@ CreateDrawable(Display * dpy, const __GLcontextModes * fbconfig,
    req->glxwindow = (GLXWindow) XAllocID(dpy);
    req->numAttribs = (CARD32) i;
 
-   memcpy(data, attrib_list, 8 * i);
+   if (attrib_list)
+      memcpy(data, attrib_list, 8 * i);
 
    UnlockDisplay(dpy);
    SyncHandle();