From d1be63c355b2cd95c4634706f11fa0da2475c39b Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Mon, 21 Jul 2025 15:03:01 -0400
Subject: [PATCH] spirv: Assert that vtn_pointer_to_deref() doesn't return NULL

There are a few things that could cause us to return NULL here and we
should just fail to parse the SPIR-V if that ever happens instead of
crashing when someone tries to access it.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36427>
---
 src/compiler/spirv/vtn_variables.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/compiler/spirv/vtn_variables.c b/src/compiler/spirv/vtn_variables.c
index 7891e6c1c20..def039bc341 100644
--- a/src/compiler/spirv/vtn_variables.c
+++ b/src/compiler/spirv/vtn_variables.c
@@ -524,6 +524,8 @@ vtn_pointer_to_deref(struct vtn_builder *b, struct vtn_pointer *ptr)
       ptr = vtn_pointer_dereference(b, ptr, &chain);
    }
 
+   vtn_assert(ptr->deref != NULL);
+
    return ptr->deref;
 }