Function fuckit::summon_clones

pub fn summon_clones<T: Clone>(value: &T, len: usize) -> &'static mut [T]

Allocates space for a slice of len clones/copies of value, which will never be freed, so they can have unbounded 'static lifetimes. This leaks memory.

Example

Returning a reference to a locally-created slice of clones without manually making it owned by some longer-lived value.

fn inner_function() -> &'static mut [Vec<usize>] {
    let on_stack = vec![1, 2, 3];
    let on_heap = fuckit::summon_clones(&on_stack, 32);
    on_heap
}

let vs = inner_function();

// Ensure the value was actually cloned:
for v in vs.iter() {
    assert_eq!(*v, vec![1, 2, 3]);
}

// Ensure the value wasn't just aliased: modifying one vec shouldn't
// affect the others:
vs[0][0] = 99;
vs[1].clear();
assert_eq!(1, vs[2][0]);
assert_eq!(1, vs[31][0]);