1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/layout/layout-cycle.rs b/tests/ui/layout/layout-cycle.rs
new file mode 100644
index 000000000..85685058e
--- /dev/null
+++ b/tests/ui/layout/layout-cycle.rs
@@ -0,0 +1,31 @@
+// build-fail
+//~^ ERROR: a cycle occurred during layout computation
+//~| ERROR: cycle detected when computing layout of
+
+// Issue #111176 -- ensure that we do not emit ICE on layout cycles
+
+use std::mem;
+
+pub struct S<T: Tr> {
+    pub f: <T as Tr>::I,
+}
+
+pub trait Tr {
+    type I: Tr;
+}
+
+impl<T: Tr> Tr for S<T> {
+    type I = S<S<T>>;
+}
+
+impl Tr for () {
+    type I = ();
+}
+
+fn foo<T: Tr>() -> usize {
+    mem::size_of::<S<T>>()
+}
+
+fn main() {
+    println!("{}", foo::<S<()>>());
+}