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/// Can create buffers of arbitrary lifetime.
/// Frees created buffers when dropped.
///
/// This struct is of course unsafe and the fact that
/// it must outlive the created slices has to be ensured by
/// the programmer.
///
/// Used at certain test scenarios as a safer version of
/// Vec::leak, to satisfy the address sanitizer.
pub struct LeakedBuffers {
leaked_vecs: Vec<Box<[u8]>>,
}
impl LeakedBuffers {
pub fn new() -> Self {
Self {
leaked_vecs: vec![],
}
}
pub unsafe fn create<'a>(&mut self, size: usize) -> &'a mut [u8] {
let new_mem = vec![0u8; size].into_boxed_slice();
self.leaked_vecs.push(new_mem);
let new_mem = self.leaked_vecs.last_mut().unwrap();
std::slice::from_raw_parts_mut(new_mem.as_mut_ptr(), new_mem.len())
}
}