From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/consts/issue-79137-monomorphic.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 tests/ui/consts/issue-79137-monomorphic.rs

(limited to 'tests/ui/consts/issue-79137-monomorphic.rs')

diff --git a/tests/ui/consts/issue-79137-monomorphic.rs b/tests/ui/consts/issue-79137-monomorphic.rs
new file mode 100644
index 000000000..58e0c387f
--- /dev/null
+++ b/tests/ui/consts/issue-79137-monomorphic.rs
@@ -0,0 +1,19 @@
+// check-pass
+
+// Verify that variant count intrinsic can still evaluate for types like `Option<T>`.
+
+#![feature(variant_count)]
+
+pub struct GetVariantCount<T>(T);
+
+impl<T> GetVariantCount<T> {
+    pub const VALUE: usize = std::mem::variant_count::<T>();
+}
+
+const fn check_variant_count<T>() -> bool {
+    matches!(GetVariantCount::<Option<T>>::VALUE, GetVariantCount::<Option<()>>::VALUE)
+}
+
+fn main() {
+    assert!(check_variant_count::<()>());
+}
-- 
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