From 4cc97303072009efe5da7fa2bc707f8058b3c53d Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Thu, 17 Oct 2024 11:21:43 -0500
Subject: [PATCH] compiler/rust: Fix a bad cast in the memstream abstraction

If you just do ref.cast(), it will cast the thing it's a reference to.
If you want to turn a reference into a pointer, you need to explicitly
use "as".

Fixes: 279f38918f03 ("nak: memstream: move into common code")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31718>
---
 src/compiler/rust/memstream.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/rust/memstream.rs b/src/compiler/rust/memstream.rs
index 3d7bdcda01c..00adaa71517 100644
--- a/src/compiler/rust/memstream.rs
+++ b/src/compiler/rust/memstream.rs
@@ -33,7 +33,7 @@ impl MemStream {
             let stream_impl = stream_impl.as_mut().get_unchecked_mut();
             if !bindings::u_memstream_open(
                 &mut stream_impl.stream,
-                (&mut stream_impl.buffer).cast(),
+                (&mut stream_impl.buffer as *mut *mut u8).cast(),
                 &mut stream_impl.buffer_size,
             ) {
                 return Err(io::Error::last_os_error());