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Diffstat (limited to 'library/core/src/array/mod.rs')
| -rw-r--r-- | library/core/src/array/mod.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/library/core/src/array/mod.rs b/library/core/src/array/mod.rs index d14419a23a1..d713e575b58 100644 --- a/library/core/src/array/mod.rs +++ b/library/core/src/array/mod.rs @@ -472,6 +472,11 @@ impl<T: Copy> SpecArrayClone for T { // The Default impls cannot be done with const generics because `[T; 0]` doesn't // require Default to be implemented, and having different impl blocks for // different numbers isn't supported yet. +// +// Trying to improve the `[T; 0]` situation has proven to be difficult. +// Please see these issues for more context on past attempts and crater runs: +// - https://github.com/rust-lang/rust/issues/61415 +// - https://github.com/rust-lang/rust/pull/145457 macro_rules! array_impl_default { {$n:expr, $t:ident $($ts:ident)*} => { |