vsapsai added a comment. There should be no error for `blockWithParam = genericBlockWithParam;` because `blockWithParam` is called with `I *` and it is safe to substitute `genericBlockWithParam`. Basically you have
I *blockArg; id<P> genericParam = blockArg; And for `genericBlockWithParam = blockWithParam;` you have id<P> blockArg; I *blockParam = blockArg; // Or as a concrete example // id<NSCopying> blockArg_thatHappensToBeNumber = @42; // NSString *blockParam = blockArg_thatHappensToBeNumber; It is not safe to make such assignments, that's why there is an error now. Repository: rL LLVM CHANGES SINCE LAST ACTION https://reviews.llvm.org/D66831/new/ https://reviews.llvm.org/D66831 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
