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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/const-generics/issues/issue-82956.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/const-generics/issues/issue-82956.rs')
-rw-r--r-- | tests/ui/const-generics/issues/issue-82956.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/const-generics/issues/issue-82956.rs b/tests/ui/const-generics/issues/issue-82956.rs new file mode 100644 index 000000000..3539e9b96 --- /dev/null +++ b/tests/ui/const-generics/issues/issue-82956.rs @@ -0,0 +1,33 @@ +#![feature(generic_const_exprs)] +#![allow(incomplete_features)] + +pub struct ConstCheck<const CHECK: bool>; + +pub trait True {} +impl True for ConstCheck<true> {} + +pub trait OrdesDec { + type Newlen; + type Output; + + fn pop(self) -> (Self::Newlen, Self::Output); +} + +impl<T, const N: usize> OrdesDec for [T; N] +where + ConstCheck<{N > 1}>: True, + [T; N - 1]: Sized, +{ + type Newlen = [T; N - 1]; + type Output = T; + + fn pop(self) -> (Self::Newlen, Self::Output) { + let mut iter = IntoIter::new(self); + //~^ ERROR: failed to resolve: use of undeclared type `IntoIter` + let end = iter.next_back().unwrap(); + let new = [(); N - 1].map(move |()| iter.next().unwrap()); + (new, end) + } +} + +fn main() {} |