https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93731
--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> --- These systems are EOL so we can't expect any fixes to the systems themselves. The question is "is the latest imported as an version even supposed to support 10.7"? I have a patch to unsupport the sanitiser for <= 10.6 [where it has been unsupported upstream since at least the last release]. That is something that I can apply immediately. If the latest sanitiser code is _supposed_ to work on 10.7 - we should at least take a cursory look at why/where it's failing before punting. I agree that spending much time on making the sanitisers work on EOL machines is not a priority. I don't have access to my 10.7 box right now - but will take a look next week.