regehr added a comment. Well, my second program should subtract a multiple of sizeof(T). But anyway, my view is that this is a real overflow and a nasty consequence of the unsigned size_t and the usual arithmetic conversions and I don't think we want to try to poke a hole in UBSan to allow this idiom unless it turns out to be extremely common.
I think it would be better style to cast the sizeof() to a ptrdiff_t rather than to an int, but as long as d is a ptrdiff_t this won't matter. Repository: rL LLVM https://reviews.llvm.org/D33305 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
