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CTFE: test size/align_of_val_raw on dangling pointers

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This commit is contained in:
Ralf Jung
2020-12-30 14:29:33 +01:00
parent 95aed7ab3b
commit f76bae9244
2 changed files with 11 additions and 2 deletions
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6
library/core/src/mem/mod.rs
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@@ -374,7 +374,8 @@ pub const fn size_of_val<T: ?Sized>(val: &T) -> usize {
/// ```
#[inline]
#[unstable(feature = "layout_for_ptr", issue = "69835")]
pub unsafe fn size_of_val_raw<T: ?Sized>(val: *const T) -> usize {
#[rustc_const_unstable(feature = "const_size_of_val_raw", issue = "46571")]
pub const unsafe fn size_of_val_raw<T: ?Sized>(val: *const T) -> usize {
intrinsics::size_of_val(val)
}
@@ -505,7 +506,8 @@ pub const fn align_of_val<T: ?Sized>(val: &T) -> usize {
/// ```
#[inline]
#[unstable(feature = "layout_for_ptr", issue = "69835")]
pub unsafe fn align_of_val_raw<T: ?Sized>(val: *const T) -> usize {
#[rustc_const_unstable(feature = "const_align_of_val_raw", issue = "46571")]
pub const unsafe fn align_of_val_raw<T: ?Sized>(val: *const T) -> usize {
intrinsics::min_align_of_val(val)
}