From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/macros/issue-41803.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 tests/ui/macros/issue-41803.rs

(limited to 'tests/ui/macros/issue-41803.rs')

diff --git a/tests/ui/macros/issue-41803.rs b/tests/ui/macros/issue-41803.rs
new file mode 100644
index 000000000..bccfdc611
--- /dev/null
+++ b/tests/ui/macros/issue-41803.rs
@@ -0,0 +1,23 @@
+// run-pass
+#![allow(unused_macro_rules)]
+
+/// A compile-time map from identifiers to arbitrary (heterogeneous) expressions
+macro_rules! ident_map {
+    ( $name:ident = { $($key:ident => $e:expr,)* } ) => {
+        macro_rules! $name {
+            $(
+                ( $key ) => { $e };
+            )*
+            // Empty invocation expands to nothing. Needed when the map is empty.
+            () => {};
+        }
+    };
+}
+
+ident_map!(my_map = {
+    main => 0,
+});
+
+fn main() {
+    my_map!(main);
+}
-- 
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