[Clang] Explain satisfaction failure for more type traits
#141 911 ouverte le 29 mai 2025
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Description
Last week, we added the scaffolding for clang to explain why a standard type trait is not satisfied - when used either in a static_assert or as atomic constraint, in Sema::DiagnoseTypeTraitDetails (#141238)
https://gcc.godbolt.org/z/xb7PcxzTx
So far, this has only been done for std::is_trivially_relocatable.
There are plenty of type traits that could benefit from additional diagnostics https://eel.is/c++draft/type.traits#meta.type.synop
I figure adding support for more type traits (one at a time!) could be a good first issue, and it's always nice to improve our diagnostics.