Re: test-parse-datetime assertion failure on NetBSD

[Bruno Haible via Gnulib discussion list]

Hi,

Thomas Klausner wrote:
> While updating gnutls in pkgsrc to 3.8.13 and running the test suite
> on NetBSD 11.99.5/x86_64, I had a test failure:
> 
> [1]   Abort trap (core dumped) "${@}" >>"${log_file}" 2>&1
> FAIL: test-parse-datetime
> 
> test-suite.log has:
> 
> FAIL: test-parse-datetime
> =========================
> 
> test-parse-datetime.c:577: assertion 'parse_datetime (&result, buf, &now)' 
> failed
> FAIL test-parse-datetime (exit status: 134)
> 
> I can reproduce this with a gnulib git checkout from just now.

I can reproduce it with a testdir for module 'parse-datetime' on NetBSD 
11.0_RC3.

In this code:

#ifdef _SC_TZNAME_MAX
    tzname_max = sysconf (_SC_TZNAME_MAX);
#endif
    enum { tzname_alloc = 2000 };
    if (tzname_max < 0)
      tzname_max = errno ? 6 : tzname_alloc;
    int tzname_len = tzname_alloc < tzname_max ? tzname_alloc : tzname_max;

tzname_max is 511, and for values of tzname_len that are <= 254, the test
succeeds. Whereas for tzname_len >= 255, the test fails.

So, either sysconf (_SC_TZNAME_MAX) is too large (should be 254 instead of 511),
or the time zone processing inside libc needs bigger buffers.

Are you in a position to report this back to the NetBSD people?

Bruno