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Auto merge of #130697 - bjoernager:const-char-make-ascii, r=dtolnay

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Mark `char::make_ascii_uppercase` and `char::make_ascii_lowercase` as const.

Relevant tracking issue: #130698

The `make_ascii_uppercase` and `make_ascii_lowercase` methods in `char` should be marked "const."

With the stabilisation of [`const_mut_refs`](https://github.com/rust-lang/rust/issues/57349/), this simply requires adding the `const` specifier to the function signatures.
This commit is contained in:
bors 2024-09-22 13:55:07 +00:00
commit 0af7f0f4c4
1 changed files with 4 additions and 2 deletions
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6
library/core/src/char/methods.rs
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@ -1279,8 +1279,9 @@ impl char {
///
/// [`to_ascii_uppercase()`]: #method.to_ascii_uppercase
#[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
#[rustc_const_unstable(feature = "const_char_make_ascii", issue = "130698")]
#[inline]
pub fn make_ascii_uppercase(&mut self) {
pub const fn make_ascii_uppercase(&mut self) {
*self = self.to_ascii_uppercase();
}
@ -1304,8 +1305,9 @@ impl char {
///
/// [`to_ascii_lowercase()`]: #method.to_ascii_lowercase
#[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
#[rustc_const_unstable(feature = "const_char_make_ascii", issue = "130698")]
#[inline]
pub fn make_ascii_lowercase(&mut self) {
pub const fn make_ascii_lowercase(&mut self) {
*self = self.to_ascii_lowercase();
}