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Graph/so-79823226

Question

so-79823226

so-79823226

so-79823226

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DESCRIBESProblem

Could the user observe a difference? — libc++ and libstdc++ do not implement this using an "intermediate alias template" as specified. Tension: Starting with C++26, this is obviously a bug because the user could reflect like `^^_Atomic(int)` and tell apart alias templates from class templates. Outcome: Prior to C++26, is there any way the user could tell?

DESCRIBESProblem

If a standard library makes `_Atomic` expand to a class template. Tension: it would not be compliant to let it compile without any warnings or errors. Outcome: a compiler would need to at least raise a warning.

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