Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 28 insertions, 0 deletions

diff --git a/src/test/ui/associated-types/associated-types-outlives.rs b/src/test/ui/associated-types/associated-types-outlives.rs
new file mode 100644
index 000000000..55c276280
--- /dev/null
+++ b/src/test/ui/associated-types/associated-types-outlives.rs
@@ -0,0 +1,28 @@
+// Regression test for issue #24622. The older associated types code
+// was erroneously assuming that all projections outlived the current
+// fn body, causing this (invalid) code to be accepted.
+
+pub trait Foo<'a> {
+    type Bar;
+}
+
+impl<'a, T:'a> Foo<'a> for T {
+    type Bar = &'a T;
+}
+
+fn denormalise<'a, T>(t: &'a T) -> <T as Foo<'a>>::Bar {
+    t
+}
+
+pub fn free_and_use<T: for<'a> Foo<'a>,
+                    F: for<'a> FnOnce(<T as Foo<'a>>::Bar)>(x: T, f: F) {
+    let y;
+    'body: loop { // lifetime annotations added for clarity
+        's: loop { y = denormalise(&x); break }
+        drop(x); //~ ERROR cannot move out of `x` because it is borrowed
+        return f(y);
+    }
+}
+
+pub fn main() {
+}