From 246f239d9f40f633160f0c18f87a20922d4e77bb Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:06:37 +0200
Subject: Merging debian version 1.65.0+dfsg1-2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../hrtb-higher-ranker-supertraits-transitive.rs   | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs

(limited to 'src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs')

diff --git a/src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs b/src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs
new file mode 100644
index 000000000..f9ae1429e
--- /dev/null
+++ b/src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs
@@ -0,0 +1,50 @@
+// Test HRTB supertraits with several levels of expansion required.
+
+trait Foo<'tcx>
+{
+    fn foo(&'tcx self) -> &'tcx isize;
+}
+
+trait Bar<'ccx>
+    : for<'tcx> Foo<'tcx>
+{
+    fn bar(&'ccx self) -> &'ccx isize;
+}
+
+trait Baz
+    : for<'ccx> Bar<'ccx>
+{
+    fn dummy(&self);
+}
+
+trait Qux
+    : Bar<'static>
+{
+    fn dummy(&self);
+}
+
+fn want_foo_for_any_tcx<F>(f: &F)
+    where F : for<'tcx> Foo<'tcx>
+{
+}
+
+fn want_bar_for_any_ccx<B>(b: &B)
+    where B : for<'ccx> Bar<'ccx>
+{
+}
+
+fn want_baz<B>(b: &B)
+    where B : Baz
+{
+    want_foo_for_any_tcx(b);
+    want_bar_for_any_ccx(b);
+}
+
+fn want_qux<B>(b: &B)
+    where B : Qux
+{
+    want_foo_for_any_tcx(b);
+    want_bar_for_any_ccx(b); //~ ERROR
+}
+
+fn main() {}
-- 
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