*/staticvoidtest_overlap(intm){char*tname;size_tlen;inti, n, fd[MIN_PTYS];for(i =0; i < MIN_PTYS; i++) {if((fd[i] =posix_openpt(O_RDWR | O_NOCTTY)) <0)break;/* out of PTYs */if(grantpt(fd[i]) <0) e(0);if(unlockpt(fd[i]) <0) e(0);if((tname = ptsname(...