[PATCH v2] libstdc++: add range support to std::optional (P3168)

[Giuseppe D'Angelo]

Hello,

On 10/06/2025 16:32, Jonathan Wakely wrote:
>> Whops, I again addedstd::string to a constexpr test, so this will fail
>> on the old ABI. Should I change it to e.g.std::vector, or should I keep
>> it and add a `{ dg-require-effective-target cxx11_abi }` directive?
> 
> Would string_view work instead? If not, please change it to vector.

Added both and removed string. New patch attached.

Thank you,

-- 
Giuseppe D'Angelo
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