Merging upstream version 1.75.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs
new file mode 100644
index 000000000..6863a3c73
--- /dev/null
+++ b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs
@@ -0,0 +1,25 @@
+// This test should never pass!
+
+#![feature(type_alias_impl_trait)]
+
+trait Captures<'a> {}
+impl<T> Captures<'_> for T {}
+
+struct MyTy<'a, 'b>(Option<*mut &'a &'b ()>);
+unsafe impl Send for MyTy<'_, 'static> {}
+
+fn step1<'a, 'b: 'a>() -> impl Sized + Captures<'b> + 'a {
+    MyTy::<'a, 'b>(None)
+}
+
+fn step2<'a, 'b: 'a>() -> impl Sized + 'a {
+    step1::<'a, 'b>()
+    //~^ ERROR hidden type for `impl Sized + 'a` captures lifetime that does not appear in bounds
+}
+
+fn step3<'a, 'b: 'a>() -> impl Send + 'a {
+    step2::<'a, 'b>()
+    // This should not be Send unless `'b: 'static`
+}
+
+fn main() {}