[−][src]Function pre::std::mut_pointer__impl__write_bytes__
pub fn mut_pointer__impl__write_bytes__()
A stub for the preconditions of the std::mut_pointer<T>::write_bytes
function.
What is this function?
This function was generated by an impl
block inside a extern_crate
attribute that looked like this:
ⓘThis example is not tested
impl< T > mut_pointer < T > where T : ? Sized { unsafe fn write_bytes(self, val : u8, 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 writes self
is valid forcount * size_of::<T>()
bytes- the pointer
self
must have a proper alignment for its type - a valid value of
T
is written to*self
or*self
is never used
To call the function you need to assure
that the preconditions hold:
ⓘThis example is not tested
#[forward(impl pre::std::mut_pointer)] #[assure( valid_ptr(self, 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( proper_align(self), reason = "<specify the reason why you can assure this here>" )] #[assure( "a valid value of `T` is written to `*self` or `*self` is never used", reason = "<specify the reason why you can assure this here>" )] x.write_bytes(/* parameters omitted */);