Mike Ash c42ec7ab35 [Runtime] Don't check objc_debug_isa_class_mask when back deploying. ...

Older OSes may not have this value or may have a different value. We only want to check going forward, because newer runtimes don't run on older OSes except in certain testing scenarios.

rdar://problem/50700856

2019-05-13 11:37:19 -04:00

50 KiB

Raw Blame History

View Raw