Starting with Gabriel’s comment. We can see that at line 2, we have this. NSCFString characterAtIndex:
And on line 1, we have the thrown exception. If I’m correct, the assumption here is thatthe operation is trying to get the first character of a a string at index 0 and there isn’t any, so the exception is thrown. This indicates a nil string. Looking at the lines until line 6 (Gabriel says 7 and he is right, but the line is labeled as 6), the array is allocated with an object. This object is probably nil, which caused the error on line 2. Checks can be written to Gabriel and myself. Or use PayPal. : D I hope this is a correct explanation of how Gabriel got to the answer he mentioned. Alex Zavatone > On Oct 26, 2020, at 5:01 PM, Gabriel Zachmann via Cocoa-dev > <cocoa-dev@lists.apple.com> wrote: > > From a user, I received a log file that contains an error (see below) > and a stack trace of my macOS app. > > Is it possible to determine the exact line in the source code where the error > occurred? > > Best regards, Gabriel > > > Encl: > excerpt from log. > "ArtSaverApp" is my macOS app. > > > 2020-10-23 10:47:30.410560-0400 0x2318d Error 0x0 > 6750 0 ArtSaverApp: (AppKit) [com.apple.AppKit:General] *** > -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object > from objects[0] > 2020-10-23 10:47:30.433412-0400 0x2318d Error 0x0 > 6750 0 ArtSaverApp: (AppKit) [com.apple.AppKit:General] ( > 0 CoreFoundation 0x00007fff2d796b57 > __exceptionPreprocess + 250 > 1 libobjc.A.dylib 0x00007fff664475bf > objc_exception_throw + 48 > 2 CoreFoundation 0x00007fff2d84559e > -[__NSCFString characterAtIndex:].cold.1 + 0 > 3 CoreFoundation 0x00007fff2d8438c4 > -[__NSPlaceholderArray initWithCapacity:].cold.1 + 0 > 4 CoreFoundation 0x00007fff2d69a8ae > -[__NSPlaceholderArray initWithObjects:count:] + 154 > 5 CoreFoundation 0x00007fff2d6fff7e > __createArray + 47 > 6 CoreFoundation 0x00007fff2d6fff41 +[NSArray > arrayWithObject:] + 25 > 7 ArtSaverApp 0x0000000109f12466 ArtSaverApp > + 46182 > 8 ArtSaverApp 0x0000000109f1598d ArtSaverApp > + 59789 > 9 AppKit 0x00007fff2abcd7a7 > -[NSApplication(NSResponder) sendAction:to:from:] + 299 > 10 AppKit 0x00007fff2abcd642 -[NSControl > sendAction:to:] + 86 > 11 AppKit 0x00007fff2abcd574 __26-[NSCell > _sendActionFrom:]_block_invoke + 136 > 12 AppKit 0x00007fff2abcd476 -[NSCell > _sendActionFrom:] + 171 > 13 AppKit 0x00007fff2abcd3bd > -[NSButtonCell _sendActionFrom:] + 96 > 14 AppKit 0x00007fff2abc969b > NSControlTrackMouse + 1745 > 15 AppKit 0x00007fff2abc8fa2 -[NSCell > trackMouse:inRect:ofView:untilMouseUp:] + 130 > 16 AppKit 0x00007fff2abc8e61 > -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] + 691 > 17 AppKit 0x00007fff2abc81dd -[NSControl > mouseDown:] + 748 > 18 AppKit 0x00007fff2abc65f0 > -[NSWindow(NSEventRouting) _handleMouseDownEvent:isDelayedEvent:] + 4914 > 19 AppKit 0x00007fff2ab30e21 > -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 2612 > 20 AppKit 0x00007fff2ab301c9 > -[NSWindow(NSEventRouting) sendEvent:] + 349 > 21 AppKit 0x00007fff2ab2e554 > -[NSApplication(NSEvent) sendEvent:] + 352 > 22 AppKit 0x00007fff2a97b5bf > -[NSApplication run] + 707 > 23 AppKit 0x00007fff2a94d396 > NSApplicationMain + 777 > 24 libdyld.dylib 0x00007fff675efcc9 start + 1 > ) > > > > _______________________________________________ > > 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/zav%40mac.com > > This email sent to z...@mac.com _______________________________________________ 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
