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Make {align,size}_of_val const

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This commit is contained in:
Dylan MacKenzie
2020-07-29 14:56:58 -07:00
parent 8611e526b7
commit 9caf0b5222
4 changed files with 24 additions and 3 deletions
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8
library/core/src/mem/mod.rs
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@@ -332,7 +332,8 @@ pub const fn size_of<T>() -> usize {
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
pub fn size_of_val<T: ?Sized>(val: &T) -> usize {
#[rustc_const_unstable(feature = "const_size_of_val", issue = "46571")]
pub const fn size_of_val<T: ?Sized>(val: &T) -> usize {
intrinsics::size_of_val(val)
}
@@ -466,9 +467,10 @@ pub const fn align_of<T>() -> usize {
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature = "const_align_of_val", issue = "46571")]
#[allow(deprecated)]
pub fn align_of_val<T: ?Sized>(val: &T) -> usize {
min_align_of_val(val)
pub const fn align_of_val<T: ?Sized>(val: &T) -> usize {
intrinsics::min_align_of_val(val)
}
/// Returns the [ABI]-required minimum alignment of the type of the value that `val` points to.