From 74d9c4b312ee1a3149df2cf0bb8662ddcd5752ba Mon Sep 17 00:00:00 2001
From: Mazdak Farrokhzad <twingoow@gmail.com>
Date: Tue, 3 Dec 2019 07:23:09 +0100
Subject: [PATCH] parse_stmt_mac: add a comment

---
 src/librustc_parse/parser/stmt.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/librustc_parse/parser/stmt.rs b/src/librustc_parse/parser/stmt.rs
index 6f27fdc1a25f..3d2773cdc307 100644
--- a/src/librustc_parse/parser/stmt.rs
+++ b/src/librustc_parse/parser/stmt.rs
@@ -180,6 +180,7 @@ impl<'a> Parser<'a> {
             self.warn_missing_semicolon();
             StmtKind::Mac(P((mac, style, attrs)))
         } else {
+            // Since none of the above applied, this is an expression statement macro.
             let e = self.mk_expr(lo.to(hi), ExprKind::Mac(mac), ThinVec::new());
             let e = self.maybe_recover_from_bad_qpath(e, true)?;
             let e = self.parse_dot_or_call_expr_with(e, lo, attrs)?;