rust
/
reference
mirror of https://github.com/rust-lang/reference
1
0
Fork 0
Code Issues Releases Wiki Activity

Update type-layout.md

This commit is contained in:
Joshua Liebow-Feeser 2023-08-19 13:43:48 -07:00 committed by GitHub
parent 2e430462db
commit 2f82b7ff3b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/type-layout.md
View File

@ -60,9 +60,9 @@ For every primitive numeric type (`u8`, `i8`, `u16`, `i16`, `u32`, `i32`, `u64`,
`i64`, `u128`, `i128`, `usize`, `isize`, `f32`, and `f64`), `T`, the bit validity
of `T` is equivalent to the bit validity of `[u8; size_of::<T>()]`. `u8` has 256
valid representations (namely, every 8-bit sequence). An uninitialized byte is not
a valid u8. A byte at any offset in a reference or pointer type may not be a valid
u8 (the semantics of transmuting a reference or pointer to a non-pointer type is
currently undecided).
a valid `u8`. A byte at any offset in a reference or pointer type may not be a
valid `u8` (the semantics of transmuting a reference or pointer to a non-pointer
type is currently undecided).
For the primitive numeric types and also for `bool` and `char`, every byte is
guaranteed to be initialized (in other words, for every such type, `T`,