No takers?
> On 4 Nov 2015, at 22:19, 2551 <2551p...@gmail.com> wrote: > > I have an OSX app built on 10.11.1, deployment target 10.9. The app builds > and runs without any AutoLayout issues or warnings from Xcode. I have > ambiguities turned on. > > The problem is when I try to run the app on 10.9. Although the app will run > without fatally crashing, one of its main windows won’t open. In Console, on > launch I first see the message > > > “Unable to create description in > descriptionForLayoutAttribute_layoutItem_coefficient. Something is nil.” > > > If I then try to open the window from a menu command, I get the stacktrace > (relevant part appended below). I see the ‘mutually exclusive’ error starting > at line 18 in the trace, but I’ve manually been through the constraints and > can’t see any conflicts. I’ve also removed all constraints and had Xcode do > “Add Missing Constraints” after that. Again, no AutoLayout errors on build, > but still the mutually exclusive exception occurs on 10.9. > > Does anyone have any debugging tips as to how do I can find the source of the > problem when neither Xcode nor Console on my build machine make any > complaints? > > > Best > > > Phil > > > > > > 0 CoreFoundation 0x00007fff9497025c > __exceptionPreprocess + 172 > > 1 libobjc.A.dylib 0x00007fff92de3e75 > objc_exception_throw + 43 > > 2 CoreFoundation 0x00007fff9497010c > +[NSException raise:format:] + 204 > > 3 Foundation 0x00007fff8f98cc55 > descriptionForLayoutAttribute_layoutItem_coefficient + 145 > > 4 Foundation 0x00007fff8f98caaf > -[NSLayoutConstraint equationDescription] + 215 > > 5 Foundation 0x00007fff8f98cf3e > -[NSLayoutConstraint description] + 298 > > 6 CoreFoundation 0x00007fff949620e1 -[NSArray > descriptionWithLocale:indent:] + 481 > > 7 Foundation 0x00007fff8f7517bb > _NSDescriptionWithLocaleFunc + 64 > > 8 CoreFoundation 0x00007fff9485ece4 > __CFStringAppendFormatCore + 7332 > > 9 CoreFoundation 0x00007fff9488d263 > _CFStringCreateWithFormatAndArgumentsAux + 115 > > 10 CoreFoundation 0x00007fff948c4aeb _CFLogvEx + > 123 > > 11 Foundation 0x00007fff8f77b32c NSLogv + 79 > > 12 Foundation 0x00007fff8f77b2b8 NSLog + 148 > > 13 AppKit 0x00007fff8f1dc194 > -[NSView(NSConstraintBasedLayout) > engine:willBreakConstraint:dueToMutuallyExclusiveConstraints:] + 114 > > 14 Foundation 0x00007fff8f98713e -[NSISEngine > handleUnsatisfiableRowWithHead:body:usingInfeasibilityHandlingBehavior:mutuallyExclusiveConstraints:] > + 507 > > 15 Foundation 0x00007fff8f98789c -[NSISEngine > tryUsingArtificialVariableToAddConstraintWithMarker:rowBody:usingInfeasibilityHandlingBehavior:mutuallyExclusiveConstraints:] > + 379 > > 16 Foundation 0x00007fff8f784e89 -[NSISEngine > tryToAddConstraintWithMarker:expression:integralizationAdjustment:mutuallyExclusiveConstraints:] > + 663 > > 17 Foundation 0x00007fff8f98d897 > -[NSLayoutConstraint > _addLoweredExpression:toEngine:integralizationAdjustment:lastLoweredConstantWasRounded:mutuallyExclusiveConstraints:] > + 285 > > 18 Foundation 0x00007fff8f7792cf > -[NSLayoutConstraint > _addToEngine:integralizationAdjustment:mutuallyExclusiveConstraints:] + 204 > > 19 AppKit 0x00007fff8e97520b > __52-[NSView(NSConstraintBasedLayout) _setLayoutEngine:]_block_invoke_2 + 411 > > 20 Foundation 0x00007fff8f7873aa -[NSISEngine > withBehaviors:performModifications:] + 119 > > 21 AppKit 0x00007fff8e8d795c > -[NSView(NSConstraintBasedLayout) _withAutomaticEngineOptimizationDisabled:] > + 66 > > 22 AppKit 0x00007fff8e975049 > __52-[NSView(NSConstraintBasedLayout) _setLayoutEngine:]_block_invoke + 433 > > 23 AppKit 0x00007fff8e8da4fa > -[NSView(NSConstraintBasedLayout) _setLayoutEngine:] + 229 > > 24 AppKit 0x00007fff8e975122 > __52-[NSView(NSConstraintBasedLayout) _setLayoutEngine:]_block_invoke_2 + 178 > > 25 Foundation 0x00007fff8f7873aa -[NSISEngine > withBehaviors:performModifications:] + 119 > > 26 AppKit 0x00007fff8e8d795c > -[NSView(NSConstraintBasedLayout) _withAutomaticEngineOptimizationDisabled:] > + 66 > > 27 AppKit 0x00007fff8e975049 > __52-[NSView(NSConstraintBasedLayout) _setLayoutEngine:]_block_invoke + 433 > > 28 AppKit 0x00007fff8e8da4fa > -[NSView(NSConstraintBasedLayout) _setLayoutEngine:] + 229 > > 29 AppKit 0x00007fff8e97ab9e > make_and_host_engine + 256 > > 30 AppKit 0x00007fff8e97a8e7 > -[NSView(NSConstraintBasedLayout) _didChangeHostsAutolayoutEngineTo:] + 165 > > 31 AppKit 0x00007fff8e91ccce > -[NSView(NSConstraintBasedLayout) _engageAutolayout] + 81 > > 32 AppKit 0x00007fff8e91cceb > -[NSView(NSConstraintBasedLayout) _engageAutolayout] + 110 > > 33 AppKit 0x00007fff8e8e240a > -[NSView(NSConstraintBasedLayout) _layoutEngine_windowDidChange] + 87 > > 34 AppKit 0x00007fff8f01c8ee __21-[NSView > _setWindow:]_block_invoke643 + 67 > > > > > _______________________________________________ > > 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/sqwarqdev%40icloud.com > > This email sent to sqwarq...@icloud.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. 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