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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/const-generics/generic_const_exprs/infer-too-generic.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/const-generics/generic_const_exprs/infer-too-generic.rs')
-rw-r--r-- | src/test/ui/const-generics/generic_const_exprs/infer-too-generic.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/generic_const_exprs/infer-too-generic.rs b/src/test/ui/const-generics/generic_const_exprs/infer-too-generic.rs new file mode 100644 index 000000000..b8058c252 --- /dev/null +++ b/src/test/ui/const-generics/generic_const_exprs/infer-too-generic.rs @@ -0,0 +1,24 @@ +// run-pass +#![feature(generic_const_exprs)] +#![allow(incomplete_features)] + +use std::{mem, ptr}; + +fn split_first<T, const N: usize>(arr: [T; N]) -> (T, [T; N - 1]) +where + [T; N - 1]: Sized, +{ + let arr = mem::ManuallyDrop::new(arr); + unsafe { + let head = ptr::read(&arr[0]); + let tail = ptr::read(&arr[1..] as *const [T] as *const [T; N - 1]); + (head, tail) + } +} + +fn main() { + let arr = [0, 1, 2, 3, 4]; + let (head, tail) = split_first(arr); + assert_eq!(head, 0); + assert_eq!(tail, [1, 2, 3, 4]); +} |