Mesa (master): rbug: fix crash in set_vertex_buffers

[Marek Olšák]

Module: Mesa
Branch: master
Commit: b7b1ad9c6c6534757b3f30c493c425b9ffbfcf2e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b7b1ad9c6c6534757b3f30c493c425b9ffbfcf2e

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Sun Aug 17 01:33:27 2014 +0200

rbug: fix crash in set_vertex_buffers

Reviewed-by: Roland Scheidegger <sroland at vmware.com>

---

 src/gallium/drivers/rbug/rbug_context.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/drivers/rbug/rbug_context.c b/src/gallium/drivers/rbug/rbug_context.c
index ca94590..d6fca2e 100644
--- a/src/gallium/drivers/rbug/rbug_context.c
+++ b/src/gallium/drivers/rbug/rbug_context.c
@@ -758,7 +758,7 @@ rbug_set_vertex_buffers(struct pipe_context *_pipe,
 
    pipe_mutex_lock(rb_pipe->call_mutex);
 
-   if (num_buffers) {
+   if (num_buffers && _buffers) {
       memcpy(unwrapped_buffers, _buffers, num_buffers * sizeof(*_buffers));
       for (i = 0; i < num_buffers; i++)
          unwrapped_buffers[i].buffer = rbug_resource_unwrap(_buffers[i].buffer);