Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1

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

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits.rs b/tests/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits.rs
new file mode 100644
index 000000000..48ebe5017
--- /dev/null
+++ b/tests/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits.rs
@@ -0,0 +1,48 @@
+// Test a trait (`Bar`) with a higher-ranked supertrait.
+
+trait Foo<'tcx>
+{
+    fn foo(&'tcx self) -> &'tcx isize;
+}
+
+trait Bar<'ccx>
+    : for<'tcx> Foo<'tcx>
+{
+    fn bar(&'ccx self) -> &'ccx isize;
+}
+
+fn want_foo_for_some_tcx<'x,F>(f: &'x F)
+    where F : Foo<'x>
+{
+    want_foo_for_some_tcx(f);
+    want_foo_for_any_tcx(f); //~ ERROR not satisfied
+}
+
+fn want_foo_for_any_tcx<F>(f: &F)
+    where F : for<'tcx> Foo<'tcx>
+{
+    want_foo_for_some_tcx(f);
+    want_foo_for_any_tcx(f);
+}
+
+fn want_bar_for_some_ccx<'x,B>(b: &B)
+    where B : Bar<'x>
+{
+    want_foo_for_some_tcx(b);
+    want_foo_for_any_tcx(b);
+
+    want_bar_for_some_ccx(b);
+    want_bar_for_any_ccx(b); //~ ERROR not satisfied
+}
+
+fn want_bar_for_any_ccx<B>(b: &B)
+    where B : for<'ccx> Bar<'ccx>
+{
+    want_foo_for_some_tcx(b);
+    want_foo_for_any_tcx(b);
+
+    want_bar_for_some_ccx(b);
+    want_bar_for_any_ccx(b);
+}
+
+fn main() {}