[Perl/perl5] 2d44f2: Check that positive subnormals are not constant-fo...

[email protected] (sisyphus via perl5-changes) Sun, 23 Aug 2026 03:33:54 -0700

Newsgroups	perl.perl5.changes
Message-ID	<Perl/perl5/push/refs/heads/blead/[email protected]>

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 2d44f2d4261190c808ac1d9b41d3061587cecb32
      https://github.com/Perl/perl5/commit/2d44f2d4261190c808ac1d9b41d3061587cecb32
  Author: Sisyphus <[email protected]>
  Date:   2026-08-23 (Sun, 23 Aug 2026)

  Changed paths:
    M t/op/arith2.t

  Log Message:
  -----------
  Check that positive subnormals are not constant-folded to zero

If nvtype is either double, DoubleDouble, or 80-bit extended precision long double, it checks the smallest possible positive value (aka DENORM_MIN).  Else, (IEEE 754 long double or __float128), it checks a subnormal that's larger than DENORM_MIN.  (It could easily be extended to cover DENORM_MIN for all nvtypes.)

Contributed by Sisyphus in GH #9388.

Committer: arith2.t: Accommodate variable number of tests run

When compiled with -Dusequadmath, one more element is added to @v in the
'unless' block starting at line 72.  Hence, don't specify number of
tests exactly; allow flexibility.



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