Function pre::alloc::vec::Vec__impl__from_raw_parts__ [−][src]
pub fn Vec__impl__from_raw_parts__()
Expand description
A stub for the preconditions of the alloc_lib::vec::Vec<T>::from_raw_parts
function.
What is this function?
This function was generated by an impl
block inside a extern_crate
attribute that looked like this:
ⓘ
impl< T > Vec < T > {
unsafe fn from_raw_parts(ptr : * mut T, length : usize, capacity : usize) ->
Vec < T >;
/* 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:
ptr
has been previously allocated viaString
orVec<T>
T
has the same size and alignment as whatptr
was allocated withlength <= capacity
capacity
is the capacity thatptr
was allocated withptr
is not used after this call
To call the function you need to assure
that the preconditions hold:
ⓘ
#[forward(impl pre::alloc::vec::Vec)]
#[assure(
"`ptr` has been previously allocated via `String` or `Vec<T>`",
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
"`T` has the same size and alignment as what `ptr` was allocated with",
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
length <= capacity,
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
"`capacity` is the capacity that `ptr` was allocated with",
reason = "<specify the reason why you can assure this here>"
)]
#[assure(
"`ptr` is not used after this call",
reason = "<specify the reason why you can assure this here>"
)]
from_raw_parts(/* parameters omitted */);