ilya-biryukov wrote: Among the people in the thread @hokein, @sam-mccall and myself are not working on Clang anymore and definitely not on this PR.
There were some follow-ups not mention here, though. We ended up going a different route and implementing a builtin to check if doing `memcpy` will not break in practice, even if not strictly allowed by the standard. The particular case we were interested in was copying objects with vtables, but no interior pointers. This turned out to only break in practice in certain sanitizer configurations (that used the padding bytes for sanitizer checks) and it was good enough for our use-case (copying some types like that in protobuf for performance reasons). The relevant changed landed as a `__is_bitwise_cloneable` type trait in https://github.com/llvm/llvm-project/commit/f6c1e65ddfa9e1a07919104be543a1f9eccbb519 https://github.com/llvm/llvm-project/pull/82776 _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
