| @@ -674,8 +674,9 @@ impl char { |
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| 674 |
674 |
/// 'ß'.encode_utf8(&mut b); |
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/// ``` |
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#[stable(feature = "unicode_encode_char", since = "1.15.0")] |
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-#[rustc_const_unstable(feature = "const_char_encode_utf8", issue = "130512")] |
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+#[rustc_const_stable(feature = "const_char_encode_utf8", since = "CURRENT_RUSTC_VERSION")] |
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#[inline] |
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+#[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))] |
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pub const fn encode_utf8(self, dst: &mut [u8]) -> &mut str { |
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// SAFETY: `char` is not a surrogate, so this is valid UTF-8. |
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unsafe { from_utf8_unchecked_mut(encode_utf8_raw(self as u32, dst)) } |
| @@ -1770,9 +1771,11 @@ const fn len_utf16(code: u32) -> usize { |
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/// Panics if the buffer is not large enough. |
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/// A buffer of length four is large enough to encode any `char`. |
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#[unstable(feature = "char_internals", reason = "exposed only for libstd", issue = "none")] |
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-#[rustc_const_unstable(feature = "const_char_encode_utf8", issue = "130512")] |
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+#[rustc_const_stable(feature = "const_char_encode_utf8", since = "CURRENT_RUSTC_VERSION")] |
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#[doc(hidden)] |
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#[inline] |
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+#[rustc_allow_const_fn_unstable(const_eval_select)] |
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+#[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))] |
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pub const fn encode_utf8_raw(code: u32, dst: &mut [u8]) -> &mut [u8] { |
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const fn panic_at_const(_code: u32, _len: usize, _dst_len: usize) { |
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// Note that we cannot format in constant expressions. |