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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/ui/rust-2018/edition-lint-uninferable-outlives.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/rust-2018/edition-lint-uninferable-outlives.rs')
-rw-r--r-- | tests/ui/rust-2018/edition-lint-uninferable-outlives.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ui/rust-2018/edition-lint-uninferable-outlives.rs b/tests/ui/rust-2018/edition-lint-uninferable-outlives.rs new file mode 100644 index 000000000..950ad1f50 --- /dev/null +++ b/tests/ui/rust-2018/edition-lint-uninferable-outlives.rs @@ -0,0 +1,30 @@ +// build-pass (FIXME(62277): could be check-pass?) + +#![allow(unused)] +#![deny(explicit_outlives_requirements)] + +// A case where we can't infer the outlives requirement. Example copied from +// RFC 2093. +// (https://rust-lang.github.io/rfcs/2093-infer-outlives.html +// #where-explicit-annotations-would-still-be-required) + + +trait MakeRef<'a> { + type Type; +} + +impl<'a, T> MakeRef<'a> for Vec<T> + where T: 'a // still required +{ + type Type = &'a T; +} + + +struct Foo<'a, T> + where T: 'a // still required, not inferred from `field` +{ + field: <Vec<T> as MakeRef<'a>>::Type +} + + +fn main() {} |