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From: "slyfox at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/96322] New: 22_locale/numpunct/members/char/3.cc is
 outdated: expects grouping=0, actual=3
Date: Sun, 26 Jul 2020 12:11:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96322

            Bug ID: 96322
           Summary: 22_locale/numpunct/members/char/3.cc is outdated:
                    expects grouping=3D0, actual=3D3
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: slyfox at gcc dot gnu.org
  Target Milestone: ---

Noticed as a test failure on glibc-2.31 system:

FAIL: 22_locale/numpunct/members/char/3.cc execution test

Test does
"""
  // nl_NL chosen because it has no thousands separator (at this time).
  locale loc_it =3D locale(ISO_8859(15,nl_NL));
  const numpunct<char>& nump_it =3D use_facet<numpunct<char> >(loc_it);
  string g =3D nump_it.grouping();
  // Ensure that grouping is empty for locales with empty thousands separat=
or.
  VERIFY( g =3D=3D "" );
"""
and expects "grouping 0;0".

The failure started after glibc-2.30 update which changed nl_NL locale
definition:

  -thousands_sep             ""
  -grouping                  0;0
  +thousands_sep             "."
  +grouping                  3;3

https://sourceware.org/git/?p=3Dglibc.git;a=3Dcommitdiff;h=3Dfefa21790b5081=
e5d04662a240e2efd18603ef86=