3 files changed, 56 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/issue-74906.rs b/src/test/ui/const-generics/issue-74906.rs
new file mode 100644
index 00000000000..9162d1142b6
--- /dev/null
+++ b/src/test/ui/const-generics/issue-74906.rs
@@ -0,0 +1,25 @@
+// edition:2018
+// check-pass
+// revisions: full min
+#![cfg_attr(full, feature(const_generics))]
+#![cfg_attr(full, allow(incomplete_features))]
+#![cfg_attr(min, feature(min_const_generics))]
+
+const SIZE: usize = 16;
+
+struct Bar<const H: usize> {}
+
+struct Foo<const H: usize> {}
+
+impl<const H: usize> Foo<H> {
+    async fn biz(_: &[[u8; SIZE]]) -> Vec<()> {
+        vec![]
+    }
+
+    pub async fn baz(&self) -> Bar<H> {
+        Self::biz(&vec![]).await;
+        Bar {}
+    }
+}
+
+fn main() { }
diff --git a/src/test/ui/type-alias-impl-trait/issue-74761.rs b/src/test/ui/type-alias-impl-trait/issue-74761.rs
new file mode 100644
index 00000000000..4345b5d886e
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-74761.rs
@@ -0,0 +1,16 @@
+#![feature(member_constraints)]
+#![feature(type_alias_impl_trait)]
+
+pub trait A {
+    type B;
+    fn f(&self) -> Self::B;
+}
+impl<'a, 'b> A for () {
+    //~^ ERROR the lifetime parameter `'a` is not constrained
+    //~| ERROR the lifetime parameter `'b` is not constrained
+    type B = impl core::fmt::Debug;
+
+    fn f(&self) -> Self::B {}
+}
+
+fn main() {}
diff --git a/src/test/ui/type-alias-impl-trait/issue-74761.stderr b/src/test/ui/type-alias-impl-trait/issue-74761.stderr
new file mode 100644
index 00000000000..3f38fa4de01
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-74761.stderr
@@ -0,0 +1,15 @@
+error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates
+  --> $DIR/issue-74761.rs:8:6
+   |
+LL | impl<'a, 'b> A for () {
+   |      ^^ unconstrained lifetime parameter
+
+error[E0207]: the lifetime parameter `'b` is not constrained by the impl trait, self type, or predicates
+  --> $DIR/issue-74761.rs:8:10
+   |
+LL | impl<'a, 'b> A for () {
+   |          ^^ unconstrained lifetime parameter
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0207`.