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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
commit | 17d40c6057c88f4c432b0d7bac88e1b84cb7e67f (patch) | |
tree | 3f66c4a5918660bb8a758ab6cda5ff8ee4f6cdcd /src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs | |
parent | Adding upstream version 1.64.0+dfsg1. (diff) | |
download | rustc-17d40c6057c88f4c432b0d7bac88e1b84cb7e67f.tar.xz rustc-17d40c6057c88f4c432b0d7bac88e1b84cb7e67f.zip |
Adding upstream version 1.65.0+dfsg1.upstream/1.65.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs')
-rw-r--r-- | src/test/ui/higher-rank-trait-bounds/hrtb-higher-ranker-supertraits-transitive.rs | 50 |
1 files changed, 50 insertions, 0 deletions
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() {} |