[PATCH] libstdc++: Only append "@euro" to locale names for Glibc testing

[Rainer Orth]

Hi Jonathan,

> On Wed, 31 Jul 2024 at 13:27, Jonathan Wakely <jwakely@redhat.com> wrote:
>>
>> I doubt we want the @euro suffix anywhere except Glibc-based targets. We
>> certainly don't want to append "@euro" on Solaris, where this change
>> flips some tests from UNSUPPORTED to PASS, e.g.
>> 21_strings/basic_string/numeric_conversions/char/to_string_float.cc
>> It will probably also cause some to flip from UNSUPPORTED to FAIL, which
>> we'll need to address.
>
> Oh, I've just realised that the UNSUPPORTED -> PASS I observed on
> Solaris was a build using my patch for PR 57585, which is not pushed
> yet. I think without that all uses of dg-require-namedlocale might
> fail on Solaris, so this change won't actually change anything ...
> yet.
>
> It still seems worth doing now though.

agreed: while Solaris 11.4 does have a few *.ISO8859-15@euro locales

da_DK.ISO8859-15@euro
en_GB.ISO8859-15@euro
en_US.ISO8859-15@euro
sv_SE.ISO8859-15@euro

the majority (17) are not.

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University