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[PULL,9/9] rust: restrict missing_const_for_fn to qemu_api crate

Message ID 20250210102255.2555097-10-pbonzini@redhat.com (mailing list archive)
State New
Headers show
Series [PULL,1/9] rust: remove unnecessary Cargo.toml metadata | expand

Commit Message

Paolo Bonzini Feb. 10, 2025, 10:22 a.m. UTC
missing_const_for_fn is not necessarily useful or good.  For example in
a private API you can always add const later, and in a public API
it can be unnecessarily restrictive to annotate everything with const
(blocking further improvements to the API).

Nevertheless, QEMU turns it on because qemu_api uses const quite
aggressively and therefore it can be handy to have as much as possible
annotated with const.  Outside qemu_api though, not so much: devices
are self contained consumers and if there is nothing that could use
their functions in const contexts that were not anticipated.

Since missing_const_for_fn can be a bit noisy and trigger on trivial
functions that no one would ever call in const context, do not
turn it on everywhere and only keep it in qemu_api as a special case.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/Cargo.toml          | 1 -
 rust/qemu-api/src/lib.rs | 1 +
 2 files changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 5b6b6ca4382..5b0cb559286 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -52,7 +52,6 @@  empty_structs_with_brackets = "deny"
 ignored_unit_patterns = "deny"
 implicit_clone = "deny"
 macro_use_imports = "deny"
-missing_const_for_fn = "deny"
 missing_safety_doc = "deny"
 multiple_crate_versions = "deny"
 mut_mut = "deny"
diff --git a/rust/qemu-api/src/lib.rs b/rust/qemu-api/src/lib.rs
index 83c6a987c05..3cf9371cff0 100644
--- a/rust/qemu-api/src/lib.rs
+++ b/rust/qemu-api/src/lib.rs
@@ -3,6 +3,7 @@ 
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #![cfg_attr(not(MESON), doc = include_str!("../README.md"))]
+#![deny(clippy::missing_const_for_fn)]
 
 #[rustfmt::skip]
 pub mod bindings;