1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-assoc-type-in-supertrait-outlives-container.rs b/src/test/ui/regions/regions-assoc-type-in-supertrait-outlives-container.rs
new file mode 100644
index 000000000..eb6e66818
--- /dev/null
+++ b/src/test/ui/regions/regions-assoc-type-in-supertrait-outlives-container.rs
@@ -0,0 +1,41 @@
+// Test that we are imposing the requirement that every associated
+// type of a bound that appears in the where clause on a struct must
+// outlive the location in which the type appears, even when the
+// associted type is in a supertype. Issue #22246.
+
+#![allow(dead_code)]
+
+pub trait TheTrait {
+    type TheAssocType;
+}
+
+pub trait TheSubTrait : TheTrait {
+}
+
+pub struct TheType<'b> {
+    m: [fn(&'b()); 0]
+}
+
+impl<'b> TheTrait for TheType<'b> {
+    type TheAssocType = &'b ();
+}
+
+impl<'b> TheSubTrait for TheType<'b> {
+}
+
+pub struct WithAssoc<T:TheSubTrait> {
+    m: [T; 0]
+}
+
+fn with_assoc<'a,'b>() {
+    // For this type to be valid, the rules require that all
+    // associated types of traits that appear in `WithAssoc` must
+    // outlive 'a. In this case, that means TheType<'b>::TheAssocType,
+    // which is &'b (), must outlive 'a.
+
+    let _: &'a WithAssoc<TheType<'b>> = loop { };
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn main() {
+}