On Fri, Jul 21, 2017 at 11:36:05AM -0600, Jeff Law wrote: > On 07/20/2017 07:23 AM, Segher Boessenkool wrote: > > On Tue, Jul 18, 2017 at 11:17:19PM -0600, Jeff Law wrote: > > I think the documentation for the new option should say this only > > provides partial protection on targets that do not have fuller protection > > enabled. Is there some way for users to find out which targets those > > are / if their target is one of those? > Agreed. I've added a note in the documentation.
Thanks. > Sadly, there's no way short of listing them and keeping that list > up-to-date over time by hand. If we want to do that, I would suggest > we note the processors with full support as well as those with partial > support using the -fstack-check=specific prologues. Oh, I thought everything got the partial support. Targets that get _no_ protection should just warn whenever someone asks for it, I think. > I think we ought to provide that target specific information in the > documentation, though I worry it will get out of date. Thoughts? It's the same as with any other target-specific note in the generic documentation... You'll just have to hope if someone implements a cool feature for some target they remember to advertise that. Segher
