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-rw-r--r--tests/ui/issues/issue-5708.rs55
1 files changed, 55 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-5708.rs b/tests/ui/issues/issue-5708.rs
new file mode 100644
index 000000000..6fe9943d3
--- /dev/null
+++ b/tests/ui/issues/issue-5708.rs
@@ -0,0 +1,55 @@
+// run-pass
+#![allow(unused_variables)]
+/*
+# ICE when returning struct with reference to trait
+
+A function which takes a reference to a trait and returns a
+struct with that reference results in an ICE.
+
+This does not occur with concrete types, only with references
+to traits.
+*/
+
+
+// original
+trait Inner {
+ fn print(&self);
+}
+
+impl Inner for isize {
+ fn print(&self) { print!("Inner: {}\n", *self); }
+}
+
+struct Outer<'a> {
+ inner: &'a (dyn Inner+'a)
+}
+
+impl<'a> Outer<'a> {
+ fn new(inner: &dyn Inner) -> Outer {
+ Outer {
+ inner: inner
+ }
+ }
+}
+
+pub fn main() {
+ let inner: isize = 5;
+ let outer = Outer::new(&inner as &dyn Inner);
+ outer.inner.print();
+}
+
+
+// minimal
+pub trait MyTrait<T> {
+ fn dummy(&self, t: T) -> T { panic!() }
+}
+
+pub struct MyContainer<'a, T:'a> {
+ foos: Vec<&'a (dyn MyTrait<T>+'a)> ,
+}
+
+impl<'a, T> MyContainer<'a, T> {
+ pub fn add (&mut self, foo: &'a dyn MyTrait<T>) {
+ self.foos.push(foo);
+ }
+}