stpcpy
__ssp_bos_icheck2_restrict(stpcpy, char *, const char *)
#define stpcpy(dst, src) __ssp_bos_check2(stpcpy, dst, src)
char *stpcpy(char * __restrict, const char * __restrict);
bp = stpcpy(bp, blk->path.cp);
bp = stpcpy(bp, blk->dbg.cp);
bp = stpcpy(bp, DNS_PREFIX);
bp = stpcpy(bp, ipv6_addr(&ip6addr[0]));
bp = stpcpy(bp, ipv6_addr(&ip6addr[i]));
bp = stpcpy(bp, DNS_PREFIX);
bp = stpcpy(bp, ipv4_addr(ip4addr[0]));
bp = stpcpy(bp, ipv4_addr(ip4addr[i]));
char *q = stpcpy(b, argv[1]);