new_hdr_p         138 gc/include/private/gc_pmark.h   ptr_t GC_find_start(ptr_t current, hdr *hhdr, hdr **new_hdr_p);
new_hdr_p         548 gc/mark.c      ptr_t GC_find_start(current, hhdr, new_hdr_p)
new_hdr_p         550 gc/mark.c      register hdr *hhdr, **new_hdr_p;
new_hdr_p         568 gc/mark.c      	    *new_hdr_p = hhdr;