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| author | Zalathar <Zalathar@users.noreply.github.com> | 2025-09-14 14:37:10 +1000 |
|---|---|---|
| committer | Zalathar <Zalathar@users.noreply.github.com> | 2025-09-14 14:45:50 +1000 |
| commit | 16c720645cac29e71cc897374bb462fab42a8682 (patch) | |
| tree | 4d7b32d8103756092fbac2082dcc63e861db0033 | |
| parent | a015919e54c60b1b2bec7a98dec478cfc4a48f4e (diff) | |
| download | rust-16c720645cac29e71cc897374bb462fab42a8682.tar.gz rust-16c720645cac29e71cc897374bb462fab42a8682.zip | |
Note some previous attempts to change the Default impl for `[T; 0]`
| -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)*} => { |