VM_CHECKMATCH_TYPE_WHEN 4050 compile.c      		ADD_INSN1(ret, nd_line(vals), checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_WHEN | VM_CHECKMATCH_ARRAY));
VM_CHECKMATCH_TYPE_WHEN 1220 vm_insnhelper.c       case VM_CHECKMATCH_TYPE_WHEN: