Yuki Okushi 77c985f765 Rollup merge of #90607 - WaffleLapkin:const_str_from_utf8, r=oli-obk ... Make slice->str conversion and related functions `const` This PR marks the following APIs as `const`: ```rust // core::str pub const fn from_utf8(v: &[u8]) -> Result<&str, Utf8Error>; pub const fn from_utf8_mut(v: &mut [u8]) -> Result<&mut str, Utf8Error>; pub const unsafe fn from_utf8_unchecked_mut(v: &mut [u8]) -> &mut str; impl Utf8Error { pub const fn valid_up_to(&self) -> usize; pub const fn error_len(&self) -> Option<usize>; } ``` Everything but `from_utf8_unchecked_mut` uses `const_str_from_utf8` feature gate, `from_utf8_unchecked_mut` uses `const_str_from_utf8_unchecked_mut` feature gate. --- I'm not sure why `from_utf8_unchecked_mut` was left out being non-`const`, considering that `from_utf8_unchecked` is not only `const`, but **`const` stable**. --- r? ```@oli-obk``` (performance-only `const_eval_select` use)		2021-11-19 02:22:57 +09:00
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benches	Add #[must_use] to remaining alloc functions	2021-10-15 11:46:49 -04:00
src	Rollup merge of #90480 - r00ster91:remove, r=kennytm	2021-11-19 02:22:56 +09:00
tests	Make slice->str conversion and related functions const	2021-11-18 00:50:42 +03:00
Cargo.toml	rfc3052: Remove authors field from Cargo manifests	2021-07-29 14:56:05 -07:00