On 26/02/2025 16:22, Jonathan Wakely wrote:
Clang 17/18 rejects 'constexpr' on non-template functions that use (non-constexpr) placement new but accepts it on templates (silently dropping constexpr at instantiation time):https://godbolt.org/z/Tqnvc1f1W So it seems Clang 17/18 behavior is consistent enough with P2448R2 that there should be no compatibility issues.Oh great, thanks for checking.EDG is also OK with it, I checked back to v6.0 from 2020. So making it unconditionally constexpr seems fine then.
Whops, sorry, missed this sub-thread (while replying to the other one). Change of plans then, I'll amend and remove the ad-hoc constexpr macro. Thanks, -- Giuseppe D'Angelo
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