aaron.ballman added a comment. In https://reviews.llvm.org/D48852#1153598, @arphaman wrote:
> In https://reviews.llvm.org/D48852#1153415, @aaron.ballman wrote: > > > > This is acceptable because Darwin guarantees that, despite the watchOS > > > ABI differences, sizeof(ptrdiff_t) == sizeof(NS[U]Integer) > > > > Can you describe these ABI differences please? Also, does Darwin guarantee > > that alignof(ptrdiff_t) == alignof(NS[U]Integer)? > > > The ABI difference boils down to the following: > > Regular 32-bit Darwin targets (like armv7) use 'ptrdiff_t' of type 'int', > which matches 'NSInteger'. > WatchOS arm iOS target (armv7k) uses 'ptrdiff_t' of type 'long', which > doesn't match 'NSInteger' of type 'int'. Thank you for the explanation, I appreciate it. https://reviews.llvm.org/D48852 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
