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Change write_bytes test causing UB to no_run

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This also fixes improper text wrapping.
This commit is contained in:
Dylan MacKenzie 2018-04-07 15:51:25 -07:00
parent 8b8091d370
commit ee259e4dd3
1 changed files with 7 additions and 6 deletions
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13
src/libcore/intrinsics.rs
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@ -992,11 +992,11 @@ extern "rust-intrinsic" {
///
/// * The two regions of memory must *not* overlap.
///
/// Additionally, if `T` is not [`Copy`](../marker/trait.Copy), only the region at `src` *or* the
/// region at `dst` can be used or dropped after calling
/// `copy_nonoverlapping`. `copy_nonoverlapping` creates bitwise copies of
/// `T`, regardless of whether `T: Copy`, which can result in undefined
/// behavior if both copies are used.
/// Additionally, if `T` is not [`Copy`](../marker/trait.Copy), only the
/// region at `src` *or* the region at `dst` can be used or dropped after
/// calling `copy_nonoverlapping`. `copy_nonoverlapping` creates bitwise
/// copies of `T`, regardless of whether `T: Copy`, which can result in
/// undefined behavior if both copies are used.
///
/// [Undefined Behavior]: ../../reference/behavior-considered-undefined.html
///
@ -1149,7 +1149,7 @@ extern "rust-intrinsic" {
///
/// Creating an invalid value:
///
/// ```ignore
/// ```no_run
/// use std::{mem, ptr};
///
/// let mut v = Box::new(0i32);
@ -1161,6 +1161,7 @@ extern "rust-intrinsic" {
/// }
///
/// // At this point, using or dropping `v` results in undefined behavior.
/// // v = Box::new(0i32); // ERROR
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn write_bytes<T>(dst: *mut T, val: u8, count: usize);