1 files changed, 44 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/trait-with-missing-associated-type-restriction.rs b/src/test/ui/suggestions/trait-with-missing-associated-type-restriction.rs
new file mode 100644
index 000000000..0d90e4495
--- /dev/null
+++ b/src/test/ui/suggestions/trait-with-missing-associated-type-restriction.rs
@@ -0,0 +1,44 @@
+// These are all the possible variations of this error I could think of for.
+// `trait-with-missing-associated-type-restriction-fixable.rs` contains the subset of these that
+// can be fixed with `rustfix`.
+
+trait Trait<T = Self> {
+    type A;
+
+    fn func(&self) -> Self::A;
+    fn funk(&self, _: Self::A);
+    fn funq(&self) -> Self::A {} //~ ERROR mismatched types
+}
+
+fn foo(_: impl Trait, x: impl Trait) {
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn bar<T: Trait>(x: T) {
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn foo2(x: impl Trait<i32>) {
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn bar2<T: Trait<i32>>(x: T) {
+    x.funk(3); //~ ERROR mismatched types
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn baz<D: std::fmt::Debug, T: Trait<A = D>>(x: T) {
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn bat(x: &mut dyn Trait<(), A = ()>) {
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn ban<T>(x: T) where T: Trait {
+    qux(x.func()) //~ ERROR mismatched types
+}
+
+fn qux(_: usize) {}
+
+fn main() {}