https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63651
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- (In reply to Francois-Xavier Coudert from comment #2) > > I suppose as a first approach, we could make it equivalent to id. > > Not really, apparently: the answer there gives a quite complete description > (and quotes the official Apple docs): http://stackoverflow.com/a/14652187 Does it means that 'id' should be replaced with 'instancetype' in failing tests? What about the gnu-runtime?