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-rw-r--r--tests/ui/const-generics/const-param-with-additional-obligations.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/const-generics/const-param-with-additional-obligations.rs b/tests/ui/const-generics/const-param-with-additional-obligations.rs
new file mode 100644
index 000000000..f53cf85cd
--- /dev/null
+++ b/tests/ui/const-generics/const-param-with-additional-obligations.rs
@@ -0,0 +1,17 @@
+#![feature(adt_const_params)]
+#![allow(incomplete_features)]
+
+use std::marker::ConstParamTy;
+
+#[derive(Eq, PartialEq)]
+struct Foo<T>(T);
+
+trait Other {}
+
+impl<T> ConstParamTy for Foo<T> where T: Other + ConstParamTy {}
+
+fn foo<const N: Foo<u8>>() {}
+//~^ ERROR `Foo<u8>` must implement `ConstParamTy` to be used as the type of a const generic parameter
+//~| NOTE `u8` must implement `Other`, but it does not
+
+fn main() {}