> On Nov 7, 2014, at 5:06 AM, Jerry Krinock <je...@ieee.org> wrote: > >> On 2014 Nov 04, at 01:33, Quincey Morris >> <quinceymor...@rivergatesoftware.com> wrote: >> >> The fact that NSNotificationCenter is involved tells you that this is *not* >> KVO related. > > OK, then that makes me even more upset that all I can get from po $rdi, po > $rdx, po $rcx, etc. when I need them nowadays is those damned “Couldn’t > materialize: couldn’t read the value of register” errors, even though my Edit > Scheme > Info says my configuration is Debug, whose optimization setting is > -O0, Deployment Postprocessing is NO and Strip Linked Product is NO. Does > anyone know - is this new opacity the price we must pay for recent > optimizations in OS X?
Which frame are you in when you try to read the register (the top frame, or some other frame)? What does `register read rdi` display in the top frame? >> Personally, I’d worry about entry #4. Surely >> ‘objc_msgSend_corrupt_cache_error’ has got to be very, very bad. > > I hadn’t noticed that, but your remark makes sense. Unfortunately, a Google > search of objc_msgSend_corrupt_cache_error returns 0 results. If I remove > the underscores, I get one result indicating that, yes, this could be due to > a deallocced observer. objc_msgSend_corrupt_cache_error is trying to print some diagnostic info before crashing. You should usually debug it as if it were a crash in objc_msgSend itself: zombies, guard malloc, etc. The contents of the diagnostics will occasionally offer clues that the object was valid but the class was hit by a memory smasher. In this case objc_msgSend_corrupt_cache_error is itself crashing while trying to decode the data, which doesn't help distinguish "good object" from "bad object". -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
