}  iprintf("writing:\n");  for(int i = 1; i <= rnum; i++){    char kbuf[RECBUFSIZ];    int ksiz = sprintf(kbuf, "[%d]", i);    char vbuf[RECBUFSIZ];    int vsiz = i % RECBUFSIZ;    memset(vbuf, '*', vsiz);    if(!tcbdbputkeep(bdb, kbuf, ksiz, vbuf, vsiz)){      eprint(bdb, "tcbdbputkeep");      err = true;      break;    }    if(vsiz < 1){      char tbuf[PATH_MAX];      for(int j = 0; j < PATH_MAX; j++){        tbuf[j] = myrand(0x100);      }      if(!tcbdbput(bdb, kbuf, ksiz, tbuf, PATH_MAX)){        eprint(bdb, "tcbdbput");        err = true;        break;      }    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  iprintf("erasing:\n");  for(int i = 1; i <= rnum; i++){    if(i % 2 == 1){      char kbuf[RECBUFSIZ];      int ksiz = sprintf(kbuf, "[%d]", i);      if(!tcbdbout(bdb, kbuf, ksiz)){        eprint(bdb, "tcbdbout");        err = true;        break;      }      if(tcbdbout(bdb, kbuf, ksiz) || tcbdbecode(bdb) != TCENOREC){        eprint(bdb, "tcbdbout");        err = true;        break;      }    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  iprintf("random writing and reopening:\n");  for(int i = 1; i <= rnum; i++){    if(myrand(10) == 0){      int ksiz, vsiz;      char *kbuf, *vbuf;      ksiz = (myrand(5) == 0) ? myrand(UINT16_MAX) : myrand(RECBUFSIZ);      kbuf = tcmalloc(ksiz + 1);      for(int j = 0; j < ksiz; j++){        kbuf[j] = 128 + myrand(128);      }      vsiz = (myrand(5) == 0) ? myrand(UINT16_MAX) : myrand(RECBUFSIZ);      vbuf = tcmalloc(vsiz + 1);      for(int j = 0; j < vsiz; j++){        vbuf[j] = myrand(256);      }      switch(myrand(5)){      case 0:        if(!tcbdbput(bdb, kbuf, ksiz, vbuf, vsiz)){          eprint(bdb, "tcbdbput");          err = true;        }        break;      case 1:        if(!tcbdbputcat(bdb, kbuf, ksiz, vbuf, vsiz)){          eprint(bdb, "tcbdbputcat");          err = true;        }        break;      case 2:        if(!tcbdbputdup(bdb, kbuf, ksiz, vbuf, vsiz)){          eprint(bdb, "tcbdbputdup");          err = true;        }        break;      case 3:        if(!tcbdbputdupback(bdb, kbuf, ksiz, vbuf, vsiz)){          eprint(bdb, "tcbdbputdupback");          err = true;        }        break;      default:        if(!tcbdbout(bdb, kbuf, ksiz) && tcbdbecode(bdb) != TCENOREC){          eprint(bdb, "tcbdbout");          err = true;        }        break;      }      tcfree(vbuf);      tcfree(kbuf);    } else {      char kbuf[RECBUFSIZ];      int ksiz = myrand(RECBUFSIZ);      memset(kbuf, '@', ksiz);      char vbuf[RECBUFSIZ];      int vsiz = myrand(RECBUFSIZ);      memset(vbuf, '@', vsiz);      if(!tcbdbput(bdb, kbuf, ksiz, vbuf, vsiz)){        eprint(bdb, "tcbdbputcat");        err = true;        break;      }    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  if(!tcbdbclose(bdb)){    eprint(bdb, "tcbdbclose");    err = true;  }  if(!tcbdbopen(bdb, path, BDBOWRITER | omode)){    eprint(bdb, "tcbdbopen");    err = true;  }  iprintf("checking:\n");  for(int i = 1; i <= rnum; i++){    char kbuf[RECBUFSIZ];    int ksiz = sprintf(kbuf, "[%d]", i);    int vsiz;    char *vbuf = tcbdbget(bdb, kbuf, ksiz, &vsiz);    if(i % 2 == 0){      if(!vbuf){        eprint(bdb, "tcbdbget");        err = true;        break;      }      if(vsiz != i % RECBUFSIZ && vsiz != PATH_MAX){        eprint(bdb, "(validation)");        err = true;        tcfree(vbuf);        break;      }    } else {      if(vbuf || tcbdbecode(bdb) != TCENOREC){        eprint(bdb, "(validation)");        err = true;        tcfree(vbuf);        break;      }    }    tcfree(vbuf);    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  iprintf("writing:\n");  for(int i = 1; i <= rnum; i++){    char buf[RECBUFSIZ];    int len = sprintf(buf, "%08d", i);    if(!tcbdbput(bdb, buf, len, buf, len)){      eprint(bdb, "tcbdbput");      err = true;      break;    }    if(i % 10 == 0){      TCLIST *vals = tclistnew();      for(int j = myrand(5) + 1; j >= 0; j--){        tclistpush(vals, buf, len);      }      if(!tcbdbputdup3(bdb, buf, len, vals)){        eprint(bdb, "tcbdbput3");        err = true;        break;      }      tclistdel(vals);    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  iprintf("reading:\n");  for(int i = 1; i <= rnum; i++){    char kbuf[RECBUFSIZ];    int ksiz = sprintf(kbuf, "%08d", i);    int vsiz;    char *vbuf = tcbdbget(bdb, kbuf, ksiz, &vsiz);    if(!vbuf){      eprint(bdb, "tcbdbget");      err = true;      break;    } else if(vsiz != ksiz || memcmp(vbuf, kbuf, vsiz)){      eprint(bdb, "(validation)");      err = true;      tcfree(vbuf);      break;    }    tcfree(vbuf);    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  iprintf("checking words:\n");  for(int i = 0; words[i] != NULL; i += 2){    const char *kbuf = words[i];    int ksiz = strlen(kbuf);    const char *vbuf = words[i+1];    int vsiz = strlen(vbuf);    int rsiz;    char *rbuf = tcbdbget(bdb, kbuf, ksiz, &rsiz);    if(!rbuf){      eprint(bdb, "tcbdbget");      err = true;      break;    } else if(rsiz != vsiz || memcmp(rbuf, vbuf, rsiz)){      eprint(bdb, "(validation)");      err = true;      tcfree(rbuf);      break;    }    tcfree(rbuf);    if(rnum > 250) iputchar('.');  }  if(rnum > 250) iprintf(" (%08d)\n", sizeof(words) / sizeof(*words));  iprintf("checking cursor:\n");  BDBCUR *cur = tcbdbcurnew(bdb);  if(!tcbdbcurfirst(cur)){    eprint(bdb, "tcbdbcurfirst");    err = true;  }  char *kbuf;  int ksiz;  int inum = 0;  for(int i = 1; (kbuf = tcbdbcurkey(cur, &ksiz)) != NULL; i++, inum++){    int vsiz;    char *vbuf = tcbdbget(bdb, kbuf, ksiz, &vsiz);    if(!vbuf){      eprint(bdb, "tcbdbget");      err = true;      tcfree(kbuf);      break;    }    tcfree(vbuf);    tcfree(kbuf);    tcbdbcurnext(cur);    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  if(rnum > 250) iprintf(" (%08d)\n", inum);  if(tcbdbecode(bdb) != TCENOREC || inum != tcbdbrnum(bdb)){    eprint(bdb, "(validation)");    err = true;  }  iprintf("cursor updating:\n");  if(!tcbdbcurfirst(cur)){    eprint(bdb, "tcbdbcurfirst");    err = true;  }  inum = 0;  for(int i = 1; !err && (kbuf = tcbdbcurkey(cur, &ksiz)) != NULL; i++, inum++){    switch(myrand(6)){    case 0:      if(!tcbdbputdup(bdb, kbuf, ksiz, "0123456789", 10)){        eprint(bdb, "tcbdbputcat");        err = true;      }      break;    case 1:      if(!tcbdbout(bdb, kbuf, ksiz)){        eprint(bdb, "tcbdbout");        err = true;      }      break;    case 2:      if(!tcbdbcurput(cur, kbuf, ksiz, BDBCPCURRENT)){        eprint(bdb, "tcbdbcurput");        err = true;      }      break;    case 3:      if(!tcbdbcurput(cur, kbuf, ksiz, BDBCPBEFORE)){        eprint(bdb, "tcbdbcurput");        err = true;      }      break;    case 4:      if(!tcbdbcurput(cur, kbuf, ksiz, BDBCPAFTER)){        eprint(bdb, "tcbdbcurput");        err = true;      }      break;    default:      if(!tcbdbcurout(cur) && tcbdbecode(bdb) != TCENOREC){        eprint(bdb, "tcbdbcurout");        err = true;      }      break;    }    tcfree(kbuf);    tcbdbcurnext(cur);    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  if(rnum > 250) iprintf(" (%08d)\n", inum);  if(tcbdbecode(bdb) != TCENOREC){    eprint(bdb, "(validation)");    err = true;  }  if(!tcbdbsync(bdb)){    eprint(bdb, "tcbdbsync");    err = true;  }  iprintf("cursor updating from empty:\n");  tcbdbcurfirst(cur);  inum = 0;  for(int i = 1; (kbuf = tcbdbcurkey(cur, &ksiz)) != NULL; i++, inum++){    tcfree(kbuf);    if(!tcbdbcurout(cur) && tcbdbecode(bdb) != TCENOREC){      eprint(bdb, "tcbdbcurout");      err = true;    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  if(rnum > 250) iprintf(" (%08d)\n", inum);  if(tcbdbrnum(bdb) != 0){    eprint(bdb, "(validation)");    err = true;  }  if(!tcbdbput2(bdb, "one", "first")){    eprint(bdb, "tcbdbput");    err = true;  }  if(!tcbdbcurlast(cur)){    eprint(bdb, "tcbdbcurlast");    err = true;  }  if(!tcbdbcurput2(cur, "second", BDBCPCURRENT) || !tcbdbcurput2(cur, "first", BDBCPBEFORE) ||     !tcbdbcurput2(cur, "zero", BDBCPBEFORE) || !tcbdbcurput2(cur, "top", BDBCPBEFORE)){    eprint(bdb, "tcbdbcurput2");    err = true;  }  if(!tcbdbcurlast(cur)){    eprint(bdb, "tcbdbcurlast");    err = true;  }  if(!tcbdbcurput2(cur, "third", BDBCPAFTER) || !tcbdbcurput2(cur, "fourth", BDBCPAFTER) ||     !tcbdbcurput2(cur, "end", BDBCPCURRENT) ||  !tcbdbcurput2(cur, "bottom", BDBCPAFTER)){    eprint(bdb, "tcbdbcurput2");    err = true;  }  iprintf("checking transaction commit:\n");  if(!tcbdbtranbegin(bdb)){    eprint(bdb, "tcbdbtranbegin");    err = true;  }  for(int i = 1; i <= rnum; i++){    char kbuf[RECBUFSIZ];    int ksiz = sprintf(kbuf, "%d", myrand(rnum));    if(!tcbdbputdup(bdb, kbuf, ksiz, kbuf, ksiz)){      eprint(bdb, "tcbdbputdup");      err = true;      break;    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  if(!tcbdbtrancommit(bdb)){    eprint(bdb, "tcbdbtrancommit");    err = true;  }  iprintf("checking transaction abort:\n");  uint64_t ornum = tcbdbrnum(bdb);  if(!tcbdbtranbegin(bdb)){    eprint(bdb, "tcbdbtranbegin");    err = true;  }  for(int i = 1; i <= rnum; i++){    char kbuf[RECBUFSIZ];    int ksiz = sprintf(kbuf, "%d", myrand(rnum));    if(!tcbdbout(bdb, kbuf, ksiz) && tcbdbecode(bdb) != TCENOREC){      eprint(bdb, "tcbdbout");      err = true;      break;    }    if(rnum > 250 && i % (rnum / 250) == 0){      iputchar('.');      if(i == rnum || i % (rnum / 10) == 0) iprintf(" (%08d)\n", i);    }  }  if(!tcbdbtranabort(bdb)){    eprint(bdb, "tcbdbtranabort");    err = true;  }  if(tcbdbrnum(bdb) != ornum){    eprint(bdb, "(validation)");    err = true;  }  if(ornum > 1000){    if(!tcbdbcurfirst(cur)){      eprint(bdb, "tcbdbcurfirst");      err = true;    }    for(int i = 1; i < 500 && !err && (kbuf = tcbdbcurkey(cur, &ksiz)) != NULL; i++){      int vsiz;      if(myrand(20) == 0){        if(!tcbdbget3(bdb, kbuf, ksiz, &vsiz)){          eprint(bdb, "tcbdbget3");          err = true;        }        if(myrand(2) == 0 && !tcbdbout(bdb, kbuf, ksiz)){          eprint(bdb, "tcbdbget3");          err = true;        }        if(myrand(2) == 0 && !tcbdbputdup(bdb, kbuf, ksiz, kbuf, ksiz)){          eprint(bdb, "tcbdbput");          err = true;        }      } else {        if(!tcbdbcurout(cur)){