From e2c1da36f59cd99d4da4c1d5f8f323626d3dbe61 Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Sat, 10 Apr 2021 23:12:02 +0200
Subject: Support macros in pattern position

---
 crates/hir_def/src/item_tree.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'crates/hir_def/src/item_tree.rs')

diff --git a/crates/hir_def/src/item_tree.rs b/crates/hir_def/src/item_tree.rs
index 240662486..94e08f835 100644
--- a/crates/hir_def/src/item_tree.rs
+++ b/crates/hir_def/src/item_tree.rs
@@ -99,6 +99,11 @@ impl ItemTree {
                     // items.
                     ctx.lower_macro_stmts(stmts)
                 },
+                ast::Pat(_pat) => {
+                    // FIXME: This occurs because macros in pattern position are treated as inner
+                    // items and expanded during block DefMap computation
+                    return Default::default();
+                },
                 ast::Expr(e) => {
                     // Macros can expand to expressions. We return an empty item tree in this case, but
                     // still need to collect inner items.
-- 
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