Re: Kerberos delegation question, and Solaris 10 x86 problems in unittests

2010/9/15 Peter C. Norton <[email protected]>

> Greetings lists,
>
>
... omissis ...

Second, we've found that under some circumstances, there are now 2
> tests that fail under Solaris 10 x86.
>
> Test #1 is in src/dblib/unittests/done_handling.c:err_handler.  The fix is:
>
> diff -r 0de86646fcd3 src/dblib/unittests/done_handling.c
> --- a/src/dblib/unittests/done_handling.c       Tue Sep 14 15:57:39 2010
> -0400
> +++ b/src/dblib/unittests/done_handling.c       Wed Sep 15 11:00:02 2010
> -0400
> @@ -221,8 +221,14 @@
>        fflush(stdout);
>        fprintf(stderr, "DB-Library error (severity %d):\n\t%s\n", severity,
> dberrstr);
>
> -       if (oserr != DBNOERR)
> -               fprintf(stderr, "Operating-system error:\n\t%s\n",
> oserrstr);
> +       if (oserr != DBNOERR) {
> +               if (oserrstr != NULL) {
> +                       fprintf(stderr, "Operating-system error:\n\t%s\n",
> oserrstr);
> +               } else {
> +                       fprintf(stderr, "Operating-system error, NULL error
> string (probable bogon in the test)\n", oserrstr);
> +               }
> +
> +       }
>        fflush(stderr);
>
>        return INT_CANCEL;
>
> it seems that on recent updates to Solaris 10, if oserrstr is NULL,
> the test will segfault.  In prior updates to the OS, this test passed.
> The man page for fprintf only specifies that passing in a non-null
> terminated pointer to the *printf calls will result in "unspecified
> behavior", while it seems like on linux, glibc will protect the caller
> by printing something like (null).
>
>
Yes, fix is fine, I think in this case test is broken, not library although
I cannot grant there is similar problem in library (mainly in dump code).


> Test #2 is in src/ctlib/unittests/cancel.c.  I don't have a fix at the
> moment, and I don't know if the failure is of an OS-specific nature,
> but this one actually bothers me more because it seems like the
> expected behavior of setting a SIGALARM handler isn't working properly:
>
> ~/work/freetds-0.83.dev.20100902/src/ctlib/unittests $ ./cancel
> cancel.c: Check asynchronous called ct_cancel()
> connecting as sa to SYBQA1.tempdb
> SYBQA1 Message 5704 severity 10 state 1 line 0:
>        "Changed client character set setting to 'iso_1'.
> "
> Changed database context to 'master'.
>
> Changed database context to 'tempdb'.
>
> More results?...
> do_fetch retrieved 10000 rows
> do_fetch() returned: 0
> More results?...
> All rows read, this may not occur.
>
> I expect this to match the output at
> http://freetds.sourceforge.net/up/out82/test3/ctlib_cancel.1.html,
> which it doesnt :(
>
>
Mmm.... perhaps your system is too fast... test set an alarm condition than
try to send a cancel in signal handler (I don't remember where but I found
this specification and I wrote the test). Try replacing 100000 value (micro
seconds) with something smaller.


> I'm able to tests out any suggestions for the next few days.
>
> Thanks,
>
> -Peter
>
>
bye
  freddy77