Function rustc_const_eval::interpret::intern::intern_shallow

fn intern_shallow<'rt, 'mir, 'tcx, T, M: CompileTimeMachine<'mir, 'tcx, T>>(
    ecx: &'rt mut InterpCx<'mir, 'tcx, M>,
    alloc_id: AllocId,
    mutability: Mutability,
    recursive_alloc: impl FnMut(&InterpCx<'mir, 'tcx, M>, CtfeProvenance)
) -> Result<(), ()>

Intern an allocation. Returns Err if the allocation does not exist in the local memory.

mutability can be used to force immutable interning: if it is Mutability::Not, the allocation is interned immutably; if it is Mutability::Mut, then the allocation must be already mutable (as a sanity check).

recursive_alloc is called for all recursively encountered allocations.