Function alloc::heap::deallocate

pub unsafe fn deallocate(ptr: *mut u8, old_size: usize, align: usize)

Unstable (heap_api #27700)

: the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector

Deallocates the memory referenced by ptr.

The ptr parameter must not be null.

The old_size and align parameters are the parameters that were used to create the allocation referenced by ptr. The old_size parameter may be any value in range_inclusive(requested_size, usable_size).