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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/impl-trait/needs_least_region_or_bound.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/impl-trait/needs_least_region_or_bound.rs')
-rw-r--r-- | tests/ui/impl-trait/needs_least_region_or_bound.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/needs_least_region_or_bound.rs b/tests/ui/impl-trait/needs_least_region_or_bound.rs new file mode 100644 index 000000000..c4bcfe5b2 --- /dev/null +++ b/tests/ui/impl-trait/needs_least_region_or_bound.rs @@ -0,0 +1,21 @@ +// check-pass + +trait MultiRegionTrait<'a, 'b> {} +impl<'a, 'b> MultiRegionTrait<'a, 'b> for (&'a u32, &'b u32) {} + +fn no_least_region<'a, 'b>(x: &'a u32, y: &'b u32) -> impl MultiRegionTrait<'a, 'b> { + // Here we have a constraint that: + // + // (x, y) has type (&'0 u32, &'1 u32) + // + // where + // + // 'a: '0 + // + // then we require that `('0 u32, &'1 u32): MultiRegionTrait<'a, + // 'b>`, which winds up imposing a requirement that `'0 = 'a` and + // `'1 = 'b`. + (x, y) +} + +fn main() {} |