https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71255
--- Comment #8 from rguenther at suse dot de <rguenther at suse dot de> --- On Tue, 24 May 2016, mpolacek at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71255 > > --- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> --- > But before I start, do y'all feel like this attribute should be applicable too > all symbols the may_alias attribute is applicable to? I.e. not just structs, > but other decls, too. While a pragma might work I'd say for the case in question we'd like to have a "tentative" forward declaration that can be merged with subsequent forward declarations but isn't found itself by name lookup until declared itself. In any case consider what happens for a program doing int sockaddr = 1; or void sockaddr (void) {} that is, a program using the identifier for sth that is not close enough to 'struct sockaddr'. One option is to ignore the pragma for non-structs if it said 'struct sockaddr' for example.
