i965: Put an assertion to check valid varying_to_slot[varying]

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/mesa/drivers/dri/i965/gen7_sol_state.c b/src/mesa/drivers/dri/i965/gen7_sol_state.c
index 1b58efbf829e8d32225db8c4cb7b73a7ad933378..06a4cdf36c9cc846d3106ebb8ee58318c0702dfe 100644 (file)
--- a/src/mesa/drivers/dri/i965/gen7_sol_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_sol_state.c
@@ -132,6 +132,7 @@ gen7_upload_3dstate_so_decl_list(struct brw_context *brw,
       buffer_mask |= 1 << buffer;
 
       decl |= buffer << SO_DECL_OUTPUT_BUFFER_SLOT_SHIFT;
+      assert(vue_map->varying_to_slot[varying] >= 0);
       decl |= vue_map->varying_to_slot[varying] <<
         SO_DECL_REGISTER_INDEX_SHIFT;
       decl |= component_mask << SO_DECL_COMPONENT_MASK_SHIFT;