How to parse a log file
How to parse a log file
- Subject: How to parse a log file
- From: Gabriel Zachmann via Cocoa-dev <email@hidden>
- Date: Mon, 26 Oct 2020 23:01:21 +0100
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
)
Attachment:
smime.p7s
Description: S/MIME cryptographic signature
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