illumos gate

Build errors:

    splpkgmap.c: In function 'store':
    splpkgmap.c:406: error: 'svnodes' may be used uninitialized in this function [-Wuninitialized]
    *** Error code 1
    dmake: Fatal error: Command failed for target `splpkgmap.o'
    Current working directory /code/illumos-gate/usr/src/cmd/svr4pkg/pkgmk

    pkgdbmerg.c: In function 'do_like_ent':
    pkgdbmerg.c:292: error: 'mrg_result' may be used uninitialized in this function [-Wuninitialized]
    *** Error code 1
    dmake: Fatal error: Command failed for target `pkgdbmerg.o'
    Current working directory /code/illumos-gate/usr/src/cmd/svr4pkg/libinst

    mntinfo.c: In function 'mount_client':
    mntinfo.c:440: error: 'errcode' may be used uninitialized in this function [-Wuninitialized]
    mntinfo.c: In function 'unmount_client':
    mntinfo.c:320: error: 'errcode' may be used uninitialized in this function [-Wuninitialized]
    *** Error code 1
    dmake: Fatal error: Command failed for target `mntinfo.o'
    Current working directory /code/illumos-gate/usr/src/cmd/svr4pkg/libinst

    main.c: In function 'rmclass':
    main.c:1205:11: error: 'fp' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     1205 |    (void) fprintf(fp, "%s\n", ept->path);
          |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors

    main.c: In function 'main':
    main.c:345:12: error: 'dvalue' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      345 |   device = flex_device(dvalue, 1);
          |            ^~~~~~~~~~~~~~~~~~~~~~
    main.c:338:8: error: 'Rvalue' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      338 |   if (!set_inst_root(Rvalue)) {
          |        ^~~~~~~~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors

    ckentry.c: In function 'xdir':
    ckentry.c:256:27: error: 'pos' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      256 |    vfpGetCurrCharPtr(vfp) = pos;

    ocfile.c: In function 'pkgWlock':
    ocfile.c:614:5: error: 'retval' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      614 |  if (retval == 0) {
          |     ^
    cc1: all warnings being treated as errors

    lock.c: In function '_lockMatch':
    lock.c:1488:19: error: 's2Cnt' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     1488 |  if ((s1Cnt == 0) && (s2Cnt == 0)) {
          |      ~~~~~~~~~~~~~^~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors

    lock.c: In function 'admin_lock':
    lock.c:453:24: error: 'rs' may be used uninitialized in this function [-Werror=maybe-uninitialized]
       return (rx == rs ? 0 : 1);
              ~~~~~~~~~~~~~~^~~~
    cc1: all warnings being treated as errors
    *** Error code 1
    dmake: Fatal error: Command failed for target `lock.o'
    Current working directory /code/illumos-gate/usr/src/cmd/svr4pkg/pkgadm

Got some errors with shadow gcc 7, cleaning it all up.