https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70955
--- Comment #24 from rguenther at suse dot de <rguenther at suse dot de> --- On Tue, 23 Aug 2016, vries at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70955 > > --- Comment #23 from Tom de Vries <vries at gcc dot gnu.org> --- > (In reply to Richard Biener from comment #22) > > (In reply to vries from comment #18) > > > Created attachment 39484 [details] > > > Tentative patch using attributes ms_abi/sysv_abi > > > > > > not build or regression tested yet, but at least makes test-case pass. > > > > LGTM. > > Just realized, there's a potential problem with the patch and > sysv_va_list_type_node. sysv_va_list_type_node is an array type (array with > length 1 and a struct as element type). > > grokdeclarator (in c-decl.c, see comment 'A parameter declared as an array of > T > is really a pointer to T') converts that type into a pointer to array element > type (as explained in more detail in build_va_arg) and drops the attributes. > > Perhaps we should mark the underlying element type with the attribute (as > well/instead? I'm not sure yet). Hmm, yeah. You'd have to do some experiments in which process we might get a few more testcases ;)
