Add test for issue 30472

Author: clubby789

tests/ui/traits/assoc-type-hrtb-normalization-30472.rs

@@ -0,0 +1,32 @@
+//@ check-pass
+//! Tests that associated type projections normalize properly in the presence of HRTBs.
+//! Original issue: <https://github.com/rust-lang/rust/issues/30472>
+
+
+pubtraitMyFrom<T>{}
+impl<T>MyFrom<T>forT{}
+
+pubtraitMyInto<T>{}
+impl<T,U>MyInto<U>forTwhereU:MyFrom<T>{}
+
+
+pubtraitA<'self_>{
+typeT;
+}
+pubtraitB:for<'self_>A<'self_>{
+// Originally caused the `type U = usize` example below to fail with a type mismatch error
+typeU:for<'self_>MyFrom<<SelfasA<'self_>>::T>;
+}
+
+
+pubstructM;
+impl<'self_>A<'self_>forM{
+typeT = usize;
+}
+
+implBforM{
+typeU = usize;
+}
+
+
+fnmain(){}