i965: Assert that the GL primitive isn't out of range.

Coverity sees the if (mode >= BRW_PRIM_OFFSET (128)) test and assumes
that the else-branch might execute for mode to up 127, which out be out
of bounds.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

diff --git a/src/mesa/drivers/dri/i965/brw_draw.c b/src/mesa/drivers/dri/i965/brw_draw.c
index a7164dbf7d8bd5fcc42c02e8bfa7b00f0c71e134..b91597a9f5dbbdec0c9d050155aff7cd0c7cd768 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_draw.c
+++ b/src/mesa/drivers/dri/i965/brw_draw.c
@@ -92,8 +92,10 @@ get_hw_prim_for_gl_prim(int mode)
 {
    if (mode >= BRW_PRIM_OFFSET)
       return mode - BRW_PRIM_OFFSET;
-   else
+   else {
+      assert(mode < ARRAY_SIZE(prim_to_hw_prim));
       return prim_to_hw_prim[mode];
+   }
 }