DW_FORM_CLASS_BLOCK
if (class == DW_FORM_CLASS_REFERENCE || class == DW_FORM_CLASS_BLOCK)
case DW_FORM_block: return DW_FORM_CLASS_BLOCK;
case DW_FORM_block1: return DW_FORM_CLASS_BLOCK;
case DW_FORM_block2: return DW_FORM_CLASS_BLOCK;
case DW_FORM_block4: return DW_FORM_CLASS_BLOCK;