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, 19 insertions, 0 deletions

diff --git a/src/test/ui/where-clauses/where-for-self.rs b/src/test/ui/where-clauses/where-for-self.rs
new file mode 100644
index 000000000..9380e72cd
--- /dev/null
+++ b/src/test/ui/where-clauses/where-for-self.rs
@@ -0,0 +1,19 @@
+// Test that we can quantify lifetimes outside a constraint (i.e., including
+// the self type) in a where clause. Specifically, test that we cannot nest
+// quantification in constraints (to be clear, there is no reason this should not
+// we're testing we don't crash or do something stupid).
+
+trait Bar<'a> {
+    fn bar(&self);
+}
+
+impl<'a, 'b> Bar<'b> for &'a u32 {
+    fn bar(&self) {}
+}
+
+fn foo<T>(x: &T)
+    where for<'a> &'a T: for<'b> Bar<'b>
+    //~^ error: nested quantification of lifetimes
+{}
+
+fn main() {}