1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/consts/miri_unleashed/feature-gate-unleash_the_miri_inside_of_you.rs b/src/test/ui/consts/miri_unleashed/feature-gate-unleash_the_miri_inside_of_you.rs
new file mode 100644
index 000000000..8b17f6885
--- /dev/null
+++ b/src/test/ui/consts/miri_unleashed/feature-gate-unleash_the_miri_inside_of_you.rs
@@ -0,0 +1,28 @@
+#![allow(const_err)]
+
+// a test demonstrating why we do need to run static const qualification on associated constants
+// instead of just checking the final constant
+
+trait Foo<T> {
+    const X: T;
+}
+
+trait Bar<T, U: Foo<T>> {
+    const F: u32 = (U::X, 42).1; //~ ERROR destructors cannot be evaluated at compile-time
+}
+
+impl Foo<u32> for () {
+    const X: u32 = 42;
+}
+
+impl Foo<Vec<u32>> for String {
+    const X: Vec<u32> = Vec::new();
+}
+
+impl Bar<u32, ()> for () {}
+impl Bar<Vec<u32>, String> for String {}
+
+fn main() {
+    let x = <() as Bar<u32, ()>>::F;
+    let y = <String as Bar<Vec<u32>, String>>::F;
+}