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-rw-r--r--tests/ui/const-generics/projection-as-arg-const.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/const-generics/projection-as-arg-const.rs b/tests/ui/const-generics/projection-as-arg-const.rs
new file mode 100644
index 000000000..903548c75
--- /dev/null
+++ b/tests/ui/const-generics/projection-as-arg-const.rs
@@ -0,0 +1,20 @@
+// This is currently not possible to use projections as const generics.
+// More information about this available here:
+// https://github.com/rust-lang/rust/pull/104443#discussion_r1029375633
+
+pub trait Identity {
+ type Identity;
+}
+
+impl<T> Identity for T {
+ type Identity = Self;
+}
+
+pub fn foo<const X: <i32 as Identity>::Identity>() {
+//~^ ERROR
+ assert!(X == 12);
+}
+
+fn main() {
+ foo::<12>();
+}