Rollup merge of #143857 - Periodic1911:macro-export, r=jdonszelmann

Port #[macro_export] to the new attribute parsing infrastructure

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

r? ``@oli-obk``

cc ``@JonathanBrouwer`` ``@jdonszelmann``

1 files changed, 5 insertions, 2 deletions

diff --git a/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs b/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs
index 9071c9c95f9..c5acaf09993 100644
--- a/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs
+++ b/src/tools/clippy/clippy_lints/src/macro_metavars_in_unsafe.rs
@@ -5,10 +5,12 @@ use itertools::Itertools;
 use rustc_hir::def_id::LocalDefId;
 use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_stmt};
 use rustc_hir::{BlockCheckMode, Expr, ExprKind, HirId, Stmt, UnsafeSource};
+use rustc_hir::attrs::AttributeKind;
+use rustc_hir::find_attr;
 use rustc_lint::{LateContext, LateLintPass, Level, LintContext};
 use rustc_middle::lint::LevelAndSource;
 use rustc_session::impl_lint_pass;
-use rustc_span::{Span, SyntaxContext, sym};
+use rustc_span::{Span, SyntaxContext};
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry;
 
@@ -146,7 +148,8 @@ struct BodyVisitor<'a, 'tcx> {
 }
 
 fn is_public_macro(cx: &LateContext<'_>, def_id: LocalDefId) -> bool {
-    (cx.effective_visibilities.is_exported(def_id) || cx.tcx.has_attr(def_id, sym::macro_export))
+    ( cx.effective_visibilities.is_exported(def_id) ||
+        find_attr!(cx.tcx.get_all_attrs(def_id), AttributeKind::MacroExport{..}) )
         && !cx.tcx.is_doc_hidden(def_id)
 }