Hi there, if you are not building a threaded perl then I don't think you linked to the relevant issue. This seems to be an issue with stat.t which is thus far unreported.

I note that on Sierra also, with an unthreaded 5.26.1, the latest Time::HiRes fails to install, as does the one installed as the Core version (1.9741) when I try to reinstall it from CPAN. Very odd. It obviously installed correctly when I built my perl(s). Given that, you might simply try building Perl 5.26.1 as your next attempt.

Hope this helps!

PS I guess CPAN Testers needs more Mac OS test reports, see App::Cpanminus::reporter.

PPS I guess this is an intermittent issue; I am able to install Time::HiRes 1.9758 successfully on 5.26.1 about half the time.

PPPS Given that it's intermittent, I would be wary of trusting Time::HiRes for accuracy. Maybe the issue is that it's just blocking your Perl install, in which case you could almost ignore it, or maybe it's critical to you, in which case you might have to install a Linux VM on your Macbook, I guess :-(

Yes - I think something is up here (macOS & Time::HiRes) in general. Assuming there is no one to notify regarding the issues(s), I will just slink back to my Solaris install till this gets addressed! I may try to force the install of perl and then layer a newer version of Time::HiRes...

Thanks for taking a look!

I think it is definitely worth filing a bug report, since the failures in stat.tseem to be unreported at this point. https://rt.cpan.org/Dist/Display.html?Name=Time-HiRes.



The way forward always starts with a minimal test.

Apologies I did not cite the root bug, but where the discussion about incorporating the fix was elaborated on. For completeness here is the actual source bug that does not involve threaded perl:

https://rt.perl.org/Public/Bug/Display.html?id=128972

This bug is a match for me. I have not hit the bug you are seeing yet. So I should not file.

Last question: for your bug - did you upgrade Time::HiRes prior to building perl? Trying to confirm that is how I should do things with perlbrew.

Hm, so your build is failing with the

HiRes.xs:945:15: error: use of undeclared identifier 'darwin_time_mute
+x'
  MUTEX_INIT(&darwin_time_mutex);
[download]

failure?

There's no way that I know of to upgrade a module before building Perl. That doesn't make sense to me. What I did most recently (bear in mind I am on Sierra):

$ perlbrew install perl-5.26.2
...

$ perlbrew use 5.26.2

$ perl -MTime::HiRes -E 'say $Time::HiRes::VERSION'
1.9741

$ cpanm https://cpan.metacpan.org/authors/id/J/JH/JHI/Time-HiRes-1.975
+8.tar.gz
...

Looking for stat() subsecond timestamps...
Trying struct stat st_atimespec.tv_nsec...found.
Trying struct stat st_atimensec...NOT found.
Trying struct stat st_atime_n...NOT found.
Trying struct stat st_atim.tv_nsec...NOT found.
Trying struct stat st_uatime...NOT found.
You seem to have subsecond timestamp reading.
(Your struct stat has them, but the filesystems must help.)

...

#   Failed test at t/stat.t line 35.
#     Structures begin differing at:
#          $got->[8] = '1525293104'
#     $expected->[8] = '1525293103'

#   Failed test at t/stat.t line 35.
#     Structures begin differing at:
#          $got->[8] = '1525293105'
#     $expected->[8] = '1525293104'
# Looks like you failed 2 tests of 43.
t/stat.t ..........
Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/43 subtests
    (less 1 skipped subtest: 40 okay)

...

Test Summary Report
-------------------
t/stat.t        (Wstat: 512 Tests: 43 Failed: 2)
  Failed tests:  13, 34
  Non-zero exit status: 2
Files=12, Tests=107, 27 wallclock secs ( 0.06 usr  0.03 sys + 14.64 cu
+sr  0.18 csys = 14.91 CPU)
Result: FAIL
Failed 1/12 test programs. 2/107 subtests failed.
make: *** [test_dynamic] Error 255
[download]



The way forward always starts with a minimal test.