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Rollup merge of #142876 - JonathanBrouwer:target_feature_parser, r=oli-obk

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Port `#[target_feature]` to new attribute parsing infrastructure

Ports `target_feature` to the new attribute parsing infrastructure for https://github.com/rust-lang/rust/issues/131229#issuecomment-2971353197

r? ``@jdonszelmann``
This commit is contained in:
Jana Dönszelmann
2025-07-03 13:29:36 +02:00
committed by GitHub
parent f6d37a25a9 3d5d72b761
commit 5026d0cd8e
25 changed files with 438 additions and 310 deletions
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6
compiler/rustc_trait_selection/src/error_reporting/infer/note_and_explain.rs
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@@ -1,3 +1,4 @@
use rustc_attr_data_structures::{AttributeKind, find_attr};
use rustc_errors::Applicability::{MachineApplicable, MaybeIncorrect};
use rustc_errors::{Diag, MultiSpan, pluralize};
use rustc_hir as hir;
@@ -8,7 +9,7 @@ use rustc_middle::ty::fast_reject::DeepRejectCtxt;
use rustc_middle::ty::print::{FmtPrinter, Printer};
use rustc_middle::ty::{self, Ty, suggest_constraining_type_param};
use rustc_span::def_id::DefId;
use rustc_span::{BytePos, Span, Symbol, sym};
use rustc_span::{BytePos, Span, Symbol};
use tracing::debug;
use crate::error_reporting::TypeErrCtxt;
@@ -535,8 +536,7 @@ impl<T> Trait<T> for X {
}
}
TypeError::TargetFeatureCast(def_id) => {
let target_spans =
tcx.get_attrs(def_id, sym::target_feature).map(|attr| attr.span());
let target_spans = find_attr!(tcx.get_all_attrs(def_id), AttributeKind::TargetFeature(.., span) => *span);
diag.note(
"functions with `#[target_feature]` can only be coerced to `unsafe` function pointers"
);