Function pre::std::mut_pointer__impl__copy_to__ [−][src]
pub fn mut_pointer__impl__copy_to__()
Expand description
A stub for the preconditions of the std::mut_pointer<T>::copy_to
function.
What is this function?
This function was generated by an impl
block inside a extern_crate
attribute that looked like this:
ⓘ
impl< T > mut_pointer < T > where T : ? Sized {
unsafe fn copy_to(self, dest : * mut T, count : usize);
/* other items omitted */
}
Preconditions on external functions inside of an impl
block are attached to empty functions like this one.
When the preconditions should be checked, a call to this function is inserted, which triggers checking the preconditions.
This function has preconditions
This function has the following preconditions generated by pre
attributes:
- the pointer
self
must be valid for reads - the pointer
dest
must be valid for writes self
is valid forcount * size_of::<T>()
bytesdest
is valid forcount * size_of::<T>()
bytes- the pointer
self
must have a proper alignment for its type - the pointer
dest
must have a proper alignment for its type T
isCopy
or only the values in one of the regions are used after this call
To call the function you need to assure
that the preconditions hold:
ⓘ
#[forward(impl pre::std::mut_pointer)]
#[assure(
valid_ptr(self, r),
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
valid_ptr(dest, w),
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
"`self` is valid for `count * size_of::<T>()` bytes",
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
"`dest` is valid for `count * size_of::<T>()` bytes",
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
proper_align(self),
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
proper_align(dest),
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
"`T` is `Copy` or only the values in one of the regions are used after this call",
reason = "<specify the reason why you can assure this here>"
)]
x.copy_to(/* parameters omitted */);