On Tue, 28 Oct 2025, Qing Zhao wrote: > > counted_by itself is an extension, so I don't think it makes any sense for > > flag_iso to affect what cases are accepted, or to produce pedwarns for > > certain cases. Rather, just do a warning, not a pedwarn, with > > OPT_Wpointer_arith (since it does make sense for -Wpointer-arith to affect > > whether this is diagnosed, just not for it to be an error or pedwarn). > > Yeah, I think you are correct. The “counted_by” attribute is an GNU extension > itself already. > > So, you are suggesting to support “counted_by” for VOID pointer by default, > but > Issue warnings when -Wpointer-arith is presenting?
Yes, exactly. -- Joseph S. Myers [email protected]
