[PATCH] D151087: [Clang] Permit address space casts with 'reinterpret_cast' in C++

Mon May 22 07:18:03 PDT 2023

jhuber6 added a comment.

In D151087#4360668 <https://reviews.llvm.org/D151087#4360668>, @arsenm wrote:

>> It would most likely invalid, but I'm not asserting that `clang` should be responsible for diagnosing misuse in these cases. Especially because in generic freestanding C++ we don't have any language options to suggest the actual semantics.
>
> If the pointer sizes don’t match I think it has to be rejected since it’s no longer a pure bitcast

I don't think that's something we can diagnose here with just the address space number. it would require information from the underlying target for the expected pointer qualities to the address space.

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https://reviews.llvm.org/D151087