From 710407b11dce7274ccf16b072fb500b9e5d4fb15 Mon Sep 17 00:00:00 2001
From: Edwin Cheng <edwin0cheng@gmail.com>
Date: Mon, 28 Dec 2020 19:53:00 +0800
Subject: Fix mbe fail to pass expr with attr

---
 crates/mbe/src/tests.rs      | 12 ++++++++++++
 crates/parser/src/grammar.rs |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/crates/mbe/src/tests.rs b/crates/mbe/src/tests.rs
index 6cd0ed205..0147506c7 100644
--- a/crates/mbe/src/tests.rs
+++ b/crates/mbe/src/tests.rs
@@ -760,6 +760,18 @@ fn test_last_expr() {
     );
 }
 
+#[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(
diff --git a/crates/parser/src/grammar.rs b/crates/parser/src/grammar.rs
index f08c8bab7..63cc90027 100644
--- a/crates/parser/src/grammar.rs
+++ b/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) {
-- 
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