Fabian Maurer : vkd3d-shader/dxil: Check null pointer before it is dereferenced (Coverity).

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 9cb43723788994631ef322c6e43b14e0c79fec18
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/9cb43723788994631ef322c6e43b14...

Author: Fabian Maurer 
Date:   Sun Dec 10 19:58:37 2023 +0100

vkd3d-shader/dxil: Check null pointer before it is dereferenced (Coverity).

---

libs/vkd3d-shader/dxil.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index 9d1c69f1..4175a1af 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -3202,8 +3202,10 @@ static void sm6_parser_emit_binop(struct sm6_parser *sm6, const struct dxil_reco
     unsigned int i = 0;

a = sm6_parser_get_value_by_ref(sm6, record, NULL, &i);
+    if (!a)
+        return;
     b = sm6_parser_get_value_by_ref(sm6, record, a->type, &i);
-    if (!a || !b)
+    if (!b)
         return;

if (!dxil_record_validate_operand_count(record, i + 1, i + 2, sm6))
@@ -3994,8 +3996,10 @@ static void sm6_parser_emit_cmp2(struct sm6_parser *sm6, const struct dxil_recor
     }

a = sm6_parser_get_value_by_ref(sm6, record, NULL, &i);
+    if (!a)
+        return;
     b = sm6_parser_get_value_by_ref(sm6, record, a->type, &i);
-    if (!a || !b)
+    if (!b)
         return;

if (!dxil_record_validate_operand_count(record, i + 1, i + 2, sm6))