From dc0db358abe19481e475e10c32149b53370f1a1c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 30 May 2024 05:57:31 +0200 Subject: Merging upstream version 1.72.1+dfsg1. Signed-off-by: Daniel Baumann --- .../trait-bounds/hrtb-higher-ranker-supertraits.rs | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 tests/ui/higher-ranked/trait-bounds/hrtb-higher-ranker-supertraits.rs (limited to 'tests/ui/higher-ranked/trait-bounds/hrtb-higher-ranker-supertraits.rs') diff --git a/tests/ui/higher-ranked/trait-bounds/hrtb-higher-ranker-supertraits.rs b/tests/ui/higher-ranked/trait-bounds/hrtb-higher-ranker-supertraits.rs new file mode 100644 index 000000000..48ebe5017 --- /dev/null +++ b/tests/ui/higher-ranked/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) + 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) + 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() {} -- cgit v1.2.3