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| author | Bastian Kauschke <bastian_kauschke@hotmail.de> | 2020-03-08 14:24:32 +0100 |
|---|---|---|
| committer | Bastian Kauschke <bastian_kauschke@hotmail.de> | 2020-03-08 14:24:32 +0100 |
| commit | 6d03bbd480ef9bef09321fbfdc00229a03091b11 (patch) | |
| tree | dcf7fd10df1455d72968a192223a3a73ce56d6ce /src/libcore/mem | |
| parent | f943349eafaa75a60c05b0c84dcdb771d0eae8c9 (diff) | |
| download | rust-6d03bbd480ef9bef09321fbfdc00229a03091b11.tar.gz rust-6d03bbd480ef9bef09321fbfdc00229a03091b11.zip | |
constify `mem::discriminant`
Diffstat (limited to 'src/libcore/mem')
| -rw-r--r-- | src/libcore/mem/mod.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libcore/mem/mod.rs b/src/libcore/mem/mod.rs index 90144d11dc9..c23d0adab5c 100644 --- a/src/libcore/mem/mod.rs +++ b/src/libcore/mem/mod.rs @@ -864,6 +864,7 @@ impl<T> fmt::Debug for Discriminant<T> { /// assert_ne!(mem::discriminant(&Foo::B(3)), mem::discriminant(&Foo::C(3))); /// ``` #[stable(feature = "discriminant_value", since = "1.21.0")] -pub fn discriminant<T>(v: &T) -> Discriminant<T> { +#[rustc_const_unstable(feature = "const_discriminant", issue = "69821")] +pub const fn discriminant<T>(v: &T) -> Discriminant<T> { Discriminant(intrinsics::discriminant_value(v), PhantomData) } |