_ASM_PTR "(marker_probe_cb)\n\t" /* call */ \
_ASM_PTR "(__mark_empty_function)\n\t" /* marker_probe_closure single.field1 */ \
_ASM_PTR "0\n\t" /* marker_probe_closure single.field2 */ \
_ASM_PTR "(marker_probe_cb)\n\t" /* call */ \
_ASM_PTR "(__mark_empty_function)\n\t" /* marker_probe_closure single.field1 */ \
_ASM_PTR "0\n\t" /* marker_probe_closure single.field2 */ \