Ref8 method

P Ref8([
  1. X? o
])

Allocates o into slot '8', or reuses the existing slot '8' allocation if o is null.

Intended as a short-lived scratch reference within a single C call. Use RefUpdate8 if the callee may write back into the pointer.

Implementation

P Ref8([X? o]) => _Ref(o, '8');