[perl #133150] sprintf2.t tests fail on Linux/ia64

On Tue, 24 Apr 2018 11:24:06 -0700, jkeenan wrote:
> On Tue, 24 Apr 2018 16:17:44 GMT, jason.duerstock@gmail.com wrote:
> >
> > This is a bug report for perl from jason.duerstock@gmail.com,
> > generated with the help of perlbug 1.40 running under perl 5.26.1.
> >
> >
> > -----------------------------------------------------------------
> > [Please describe your issue here]
> >
> > This is actually for 5.26.2.
> >
> > The perl testsuite fails in t/op/sprintf2.t:
> >
> > $ ./perl t/op/sprintf2.t |grep -v ^ok
> > # uvsize = 8
> > # nvsize = 8
> > # nv_preserves_uv_bits = 53
> > # d_quad = define
> > # uselongdouble = undef
> > # Failed test 1492 - subnormal 0x1.fffffffffffffp-1022 %a
> > 0x1.fffffffffffffp-1022 got 0x0p+0 at t/op/sprintf2.t line 812
> > #      got "0x0p+0"
> > # expected "0x1.fffffffffffffp-1022"
> > # Failed test 1493 - subnormal 0x0.fffffffffffffp-1022 %a
> > 0x1.ffffffffffffep-1023 got 0x0p+0 at t/op/sprintf2.t line 812
> > #      got "0x0p+0"
> > # expected "0x1.ffffffffffffep-1023"
> > # Failed test 1494 - subnormal 0x0.7ffffffffffffp-1022 %a
> > 0x1.ffffffffffffcp-1024 got 0x0p+0 at t/op/sprintf2.t line 812
> > #      got "0x0p+0"
> > # expected "0x1.ffffffffffffcp-1024"
> > # Failed test 1495 - subnormal 0x0.3ffffffffffffp-1022 %a
> > 0x1.ffffffffffff8p-1025 got 0x0p+0 at t/op/sprintf2.t line 812
> > #      got "0x0p+0"
> > # expected "0x1.ffffffffffff8p-1025"
> > # Failed test 1496 - subnormal 0x0.1ffffffffffffp-1022 %a
> > 0x1.ffffffffffffp-1026 got 0x0p+0 at t/op/sprintf2.t line 812
> > #      got "0x0p+0"
> > # expected "0x1.ffffffffffffp-1026"
> > # Failed test 1497 - subnormal 0x0.0ffffffffffffp-1022 %a
> > 0x1.fffffffffffep-1027 got 0x0p+0 at t/op/sprintf2.t line 812
> > #      got "0x0p+0"
> > # expected "0x1.fffffffffffep-1027"
> > not ok 1492 - subnormal 0x1.fffffffffffffp-1022 %a
> > 0x1.fffffffffffffp-
> > 1022 got 0x0p+0
> > not ok 1493 - subnormal 0x0.fffffffffffffp-1022 %a
> > 0x1.ffffffffffffep-
> > 1023 got 0x0p+0
> > not ok 1494 - subnormal 0x0.7ffffffffffffp-1022 %a
> > 0x1.ffffffffffffcp-
> > 1024 got 0x0p+0
> > not ok 1495 - subnormal 0x0.3ffffffffffffp-1022 %a
> > 0x1.ffffffffffff8p-
> > 1025 got 0x0p+0
> > not ok 1496 - subnormal 0x0.1ffffffffffffp-1022 %a 0x1.ffffffffffffp-
> > 1026 got 0x0p+0
> > not ok 1497 - subnormal 0x0.0ffffffffffffp-1022 %a 0x1.fffffffffffep-
> > 1027 got 0x0p+0
> > 1..1555
> >
> > The Debian build log is here:
> >
> > https://buildd.debian.org/status/fetch.php?pkg=perl&arch=Ia64&ver=5.26.2-
> > 2&stamp=1523994239&raw=0
> >
> >
> 
> This is probably the same problem as previously reported here:
> 
> https://rt.perl.org/Ticket/Display.html?id= (sprintf2.t subnormal %a
> failures on g++ 6.2)
> 
> https://rt.perl.org/Ticket/Display.html?id=131388 (g++ vs subnormals
> in 5.26.0)
> 
> Thank you very much.

Would it be possible for you to bisect this?  If you need instructions, we can provide them.
-- 
Karl Williamson

---
via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=133150

• [perl #133150] sprintf2.t tests fail on Linux/ia64 by James E Keenan via RT
• [perl #133150] sprintf2.t tests fail on Linux/ia64 by Karl Williamson via RT
• [perl #133150] sprintf2.t tests fail on Linux/ia64 by James E Keenan via RT