Merge #7060

7060: Fix mbe fail to pass expr with attr r=edwin0cheng a=edwin0cheng

bors r+

Fixes #5896

Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>

crates/hir_def/src/nameres/tests/macros.rs

@@ -677,7 +677,7 @@ fn macro_expansion_overflow() {
         r#"
 macro_rules! a {
     ($e:expr; $($t:tt)*) => {
-        b!($($t)*);
+        b!(static = (); $($t)*);
     };
     () => {};
 }

crates/mbe/src/tests.rs

@@ -760,6 +760,18 @@ macro_rules! vec {
     );
 }
 
+#[test]
+fn test_expr_with_attr() {
+    parse_macro(
+        r#"
+macro_rules! m {
+    ($a:expr) => {0}
+}
+"#,
+    )
+    .assert_expand_items("m!(#[allow(a)]())", "0");
+}
+
 #[test]
 fn test_ty() {
     parse_macro(

crates/parser/src/grammar.rs

@@ -59,7 +59,7 @@ pub(crate) mod fragments {
     };
 
     pub(crate) fn expr(p: &mut Parser) {
-        let _ = expressions::expr(p);
+        let _ = expressions::expr_with_attrs(p);
     }
 
     pub(crate) fn stmt(p: &mut Parser) {