From 5df3fe062fb0be9a6689dc0336087b214dd30e5c Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 14 Feb 2025 11:34:44 +0100
Subject: rust: enable clippy::ptr_cast_constness

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/qemu-api/src/cell.rs    | 2 +-
 rust/qemu-api/src/chardev.rs | 2 +-
 rust/qemu-api/src/qom.rs     | 4 ++--
 rust/qemu-api/src/timer.rs   | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

(limited to 'rust/qemu-api')

diff --git a/rust/qemu-api/src/cell.rs b/rust/qemu-api/src/cell.rs
index ab0785a..1cb9fdc 100644
--- a/rust/qemu-api/src/cell.rs
+++ b/rust/qemu-api/src/cell.rs
@@ -1016,7 +1016,7 @@ impl<T> Opaque<T> {
 
     /// Returns a raw pointer to the opaque data.
     pub const fn as_ptr(&self) -> *const T {
-        self.as_mut_ptr() as *const _
+        self.as_mut_ptr().cast_const()
     }
 
     /// Returns a raw pointer to the opaque data that can be passed to a
diff --git a/rust/qemu-api/src/chardev.rs b/rust/qemu-api/src/chardev.rs
index 146a485..6e0590d 100644
--- a/rust/qemu-api/src/chardev.rs
+++ b/rust/qemu-api/src/chardev.rs
@@ -160,7 +160,7 @@ impl CharBackend {
                 receive_cb,
                 event_cb,
                 None,
-                (owner as *const T as *mut T).cast::<c_void>(),
+                (owner as *const T).cast_mut().cast::<c_void>(),
                 core::ptr::null_mut(),
                 true,
             );
diff --git a/rust/qemu-api/src/qom.rs b/rust/qemu-api/src/qom.rs
index 52e3a1e..41e5a5e 100644
--- a/rust/qemu-api/src/qom.rs
+++ b/rust/qemu-api/src/qom.rs
@@ -388,7 +388,7 @@ where
     {
         #[allow(clippy::as_ptr_cast_mut)]
         {
-            self.as_ptr::<U>() as *mut _
+            self.as_ptr::<U>().cast_mut()
         }
     }
 }
@@ -638,7 +638,7 @@ impl<T: ObjectType> Owned<T> {
         // SAFETY NOTE: while NonNull requires a mutable pointer, only
         // Deref is implemented so the pointer passed to from_raw
         // remains const
-        Owned(NonNull::new(ptr as *mut T).unwrap())
+        Owned(NonNull::new(ptr.cast_mut()).unwrap())
     }
 
     /// Obtain a raw C pointer from a reference.  `src` is consumed
diff --git a/rust/qemu-api/src/timer.rs b/rust/qemu-api/src/timer.rs
index d697fd7..868bd88 100644
--- a/rust/qemu-api/src/timer.rs
+++ b/rust/qemu-api/src/timer.rs
@@ -81,7 +81,7 @@ impl Timer {
                 scale as c_int,
                 attributes as c_int,
                 Some(timer_cb),
-                (opaque as *const T).cast::<c_void>() as *mut c_void,
+                (opaque as *const T).cast::<c_void>().cast_mut(),
             )
         }
     }
-- 
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