End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

ObjectSpace.undefine_finalizer

ObjectSpace.undefine_finalizer(obj)

static VALUE
undefine_final(VALUE os, VALUE obj)
{
    return rb_undefine_finalizer(obj);
}

Removes all finalizers for obj.

See also .trace_object_allocations_stop #dump .trace_object_allocations_start #dump_all also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1