Rust, i386, accelerator changes for 2025-10-14

[PULL 03/28] rust: migration: hide more warnings from call_func_with_field!

Paolo Bonzini posted 28 patches 1 month ago

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Maintainers: Paolo Bonzini <pbonzini@redhat.com>, "Dr. David Alan Gilbert" <dave@treblig.org>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Zhao Liu <zhao1.liu@intel.com>, "Michael S. Tsirkin" <mst@redhat.com>, Eric Blake <eblake@redhat.com>, Markus Armbruster <armbru@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Manos Pitsidianakis <manos.pitsidianakis@linaro.org>, Peter Maydell <peter.maydell@linaro.org>, Marcelo Tosatti <mtosatti@redhat.com>, Song Gao <gaosong@loongson.cn>, Huacai Chen <chenhuacai@kernel.org>, Aurelien Jarno <aurelien@aurel32.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Aleksandar Rikalo <arikalo@gmail.com>, Nicholas Piggin <npiggin@gmail.com>, Harsh Prateek Bora <harshpb@linux.ibm.com>, Chinmay Rath <rathc@linux.ibm.com>, Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Weiwei Li <liwei1518@gmail.com>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, Halil Pasic <pasic@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Eric Farman <farman@linux.ibm.com>, Matthew Rosato <mjrosato@linux.ibm.com>, Thomas Huth <thuth@redhat.com>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Stefan Hajnoczi <stefanha@redhat.com>, Fam Zheng <fam@euphon.net>

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[PULL 03/28] rust: migration: hide more warnings from call_func_with_field!

Posted by Paolo Bonzini 1 month ago

The call_func_with_field! macro uses dead code willingly to infer
the appropriate type.  This has started adding a new warning:

error: unused variable: `value__`
 79 |             break phantom__(&{ let value__: $typ; value__.$($field).+ })

So shut it up together with the existing unreachable_code warning.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/migration/src/vmstate.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/migration/src/vmstate.rs b/rust/migration/src/vmstate.rs
index e04b19b3c9f..5f5708ad39e 100644
--- a/rust/migration/src/vmstate.rs
+++ b/rust/migration/src/vmstate.rs
@@ -72,6 +72,7 @@ macro_rules! call_func_with_field {
     ($func:expr, $typ:ty, $($field:tt).+) => {
         $func(loop {
             #![allow(unreachable_code)]
+            #![allow(unused_variables)]
             const fn phantom__<T>(_: &T) -> ::core::marker::PhantomData<T> { ::core::marker::PhantomData }
             // Unreachable code is exempt from checks on uninitialized values.
             // Use that trick to infer the type of this PhantomData.
-- 
2.51.0