Re: [PATCH v8 2/2] Y2038: make __tz_convert compatible with 64-bit-time

[Joseph Myers <joseph at codesourcery dot com>]

On Sat, 29 Sep 2018, Albert ARIBAUD wrote:

> > [...]
> > Summary of test results:                                       
> >     132 FAIL
> >    5788 PASS
> >      11 UNSUPPORTED
> >      17 XFAIL
> >       2 XPASS
> > Makefile:345: recipe for target 'tests' failed
> > make[1]: *** [tests] Error 1
> > make[1] : on quitte le répertoire « /home/3adev/glibc/src »
> > Makefile:9: recipe for target 'check' failed
> > make: *** [check] Error 2
> 
> Is it normal that the make check fail with a non-zero number of FAIL and
> XFAIL?

You should expect XFAILs (for example, for conform/ tests that 
deliberately test features of the relevant standard that are either not 
provided by glibc, or are deliberately unsupported).

You should not expect anything like 132 FAILs; you'll need to get a 
working configuration for testing without so many FAILs on unmodified 
sources before you can effectively test proposed patches.

> Is it is a normal result (i.e. this release of glibc is known to FAIL
> and XFAIL this way for x86_64), then where can I find the expected FAIL
> and XFAIL details for a given architecture and a given release of glibc?

See the per-release wiki pages, e.g. 
<https://sourceware.org/glibc/wiki/Release/2.28>.  That shows 17 XFAILs as 
expected for x86_64, but no FAILs.  (Ignore the results for WSL - the 
Windows subsystem for Linux emulation - all they show is defects in that 
subsystem, it's not a suitable environment for normal glibc testing.)

On Ubuntu 18.04 (using a locally built compiler - if you do that, note you 
need to copy libgcc_s.so.* and libstdc++.so.* into the build directory 
before running the tests) I get two FAILs:

FAIL: resolv/tst-resolv-ai_idn
FAIL: resolv/tst-resolv-ai_idn-latin1

Those appear in the architecture-independent section of the wiki page, for 
systems with too-old libidn2.

For 32-bit testing on 64-bit Ubuntu 18.04 (again, with a locally built 
compiler) I get one FAIL:

FAIL: nss/tst-nss-test3

-- 
Joseph S. Myers
joseph@codesourcery.com