[Mesa-dev] [RFC 6/7] nir/validate: fix null deref coverity warning

[Rob Clark]

From: Rob Clark <robclark at freedesktop.org>

CID 1265536 (#1 of 2): Explicit null dereferenced (FORWARD_NULL)6.
var_deref_op: Dereferencing null pointer parent.
---
 src/compiler/nir/nir_validate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/nir/nir_validate.c b/src/compiler/nir/nir_validate.c
index b186fd5..fa51e3c 100644
--- a/src/compiler/nir/nir_validate.c
+++ b/src/compiler/nir/nir_validate.c
@@ -376,6 +376,7 @@ validate_deref_chain(nir_deref *deref, validate_state *state)
          break;
 
       case nir_deref_type_struct:
+         assume(parent); /* cannot happen: deref change starts w/ nir_deref_var */
          validate_assert(state, deref->type ==
                 glsl_get_struct_field(parent->type,
                                       nir_deref_as_struct(deref)->index));
-- 
2.5.5