SET_MARK_BIT_EXIT_IF_SET  212 gc/include/private/gc_pmark.h #   define SET_MARK_BIT_EXIT_IF_SET(hhdr,displ,exit_label) \
SET_MARK_BIT_EXIT_IF_SET  222 gc/include/private/gc_pmark.h #   define SET_MARK_BIT_EXIT_IF_SET(hhdr,displ,exit_label) \