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Port #[no_mangle] to new attribute parsing infrastructure

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Signed-off-by: Jonathan Brouwer <jonathantbrouwer@gmail.com>
This commit is contained in:
Jonathan Brouwer
2025-06-22 12:14:38 +02:00
parent 111e9bc64b
commit 2084831cd5
17 changed files with 120 additions and 80 deletions
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21
compiler/rustc_lint/src/builtin.rs
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@@ -21,6 +21,7 @@ use rustc_ast::tokenstream::{TokenStream, TokenTree};
use rustc_ast::visit::{FnCtxt, FnKind};
use rustc_ast::{self as ast, *};
use rustc_ast_pretty::pprust::expr_to_string;
use rustc_attr_data_structures::{AttributeKind, find_attr};
use rustc_errors::{Applicability, LintDiagnostic};
use rustc_feature::GateIssue;
use rustc_hir as hir;
@@ -954,7 +955,7 @@ declare_lint_pass!(InvalidNoMangleItems => [NO_MANGLE_CONST_ITEMS, NO_MANGLE_GEN
impl<'tcx> LateLintPass<'tcx> for InvalidNoMangleItems {
fn check_item(&mut self, cx: &LateContext<'_>, it: &hir::Item<'_>) {
let attrs = cx.tcx.hir_attrs(it.hir_id());
let check_no_mangle_on_generic_fn = |attr: &hir::Attribute,
let check_no_mangle_on_generic_fn = |attr_span: Span,
impl_generics: Option<&hir::Generics<'_>>,
generics: &hir::Generics<'_>,
span| {
@@ -967,7 +968,7 @@ impl<'tcx> LateLintPass<'tcx> for InvalidNoMangleItems {
cx.emit_span_lint(
NO_MANGLE_GENERIC_ITEMS,
span,
BuiltinNoMangleGeneric { suggestion: attr.span() },
BuiltinNoMangleGeneric { suggestion: attr_span },
);
break;
}
@@ -976,14 +977,15 @@ impl<'tcx> LateLintPass<'tcx> for InvalidNoMangleItems {
};
match it.kind {
hir::ItemKind::Fn { generics, .. } => {
if let Some(attr) = attr::find_by_name(attrs, sym::export_name)
.or_else(|| attr::find_by_name(attrs, sym::no_mangle))
if let Some(attr_span) = attr::find_by_name(attrs, sym::export_name)
.map(|at| at.span())
.or_else(|| find_attr!(attrs, AttributeKind::NoMangle(span) => *span))
{
check_no_mangle_on_generic_fn(attr, None, generics, it.span);
check_no_mangle_on_generic_fn(attr_span, None, generics, it.span);
}
}
hir::ItemKind::Const(..) => {
if attr::contains_name(attrs, sym::no_mangle) {
if find_attr!(attrs, AttributeKind::NoMangle(..)) {
// account for "pub const" (#45562)
let start = cx
.tcx
@@ -1008,11 +1010,12 @@ impl<'tcx> LateLintPass<'tcx> for InvalidNoMangleItems {
for it in *items {
if let hir::AssocItemKind::Fn { .. } = it.kind {
let attrs = cx.tcx.hir_attrs(it.id.hir_id());
if let Some(attr) = attr::find_by_name(attrs, sym::export_name)
.or_else(|| attr::find_by_name(attrs, sym::no_mangle))
if let Some(attr_span) = attr::find_by_name(attrs, sym::export_name)
.map(|at| at.span())
.or_else(|| find_attr!(attrs, AttributeKind::NoMangle(span) => *span))
{
check_no_mangle_on_generic_fn(
attr,
attr_span,
Some(generics),
cx.tcx.hir_get_generics(it.id.owner_id.def_id).unwrap(),
it.span,