1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/associated-types-region-erasure-issue-20582.rs b/src/test/ui/associated-types/associated-types-region-erasure-issue-20582.rs
new file mode 100644
index 000000000..b722506db
--- /dev/null
+++ b/src/test/ui/associated-types/associated-types-region-erasure-issue-20582.rs
@@ -0,0 +1,21 @@
+// run-pass
+#![allow(dead_code)]
+// Regression test for #20582. This test caused an ICE related to
+// inconsistent region erasure in codegen.
+
+// pretty-expanded FIXME #23616
+
+struct Foo<'a> {
+    buf: &'a[u8]
+}
+
+impl<'a> Iterator for Foo<'a> {
+    type Item = &'a[u8];
+
+    fn next(&mut self) -> Option<<Self as Iterator>::Item> {
+        Some(self.buf)
+    }
+}
+
+fn main() {
+}