I have a user running MacOS 10.13.3, and he recently reported my app (Lightwright) crashing. The code is really trivial:
WhichWnd.DragObject.Drag
The DragObject isn’t nil, and has PrivateRowData that’s a very short string.
The app is built in Xojo 2016r3 because I haven’t been able to rewrite my code for 2017R3’s new graphics paradigms.
I have a horrible feeling it’s another High Sierra headache, but here’s the system crash log - if anyone could give this a quick look and tell me whether it’s Lightwright’s fault, or HS’s, I’d really appreciate it.
=================
Process: Lightwright 6 [11078]
Path: /Applications/Lightwright 6.app/Contents/MacOS/Lightwright 6
Identifier: com.mckernon.lightwright6
Version: 6.0.16 beta build 179 (6.0.16.2.179)
Code Type: X86 (Native)
Parent Process: ??? [1]
Responsible: Lightwright 6 [11078]
User ID: 501
Date/Time: 2018-02-11 14:26:22.408 -0500
OS Version: Mac OS X 10.13.3 (17D47)
Report Version: 12
Bridge OS Version: 3.0 (14Y661)
Anonymous UUID: 12B5A55F-0E19-0C19-B9A9-0D1639F3C144
Sleep/Wake UUID: F5A31708-E8BE-44C6-87C9-2535FF0F5992
Time Awake Since Boot: 380000 seconds
Time Since Wake: 400 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000021
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
VM Regions Near 0x21:
–>
__TEXT 0000000000001000-0000000006034000 [ 96.2M] r-x/rwx SM=COW /Applications/Lightwright 6.app/Contents/MacOS/Lightwright 6
Application Specific Information:
objc_msgSend() selector name: unlock
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libobjc.A.dylib 0xa6af1163 objc_msgSend + 19
1 com.apple.CoreFoundation 0x93a5e069 __raiseError + 345
2 libobjc.A.dylib 0xa6afb346 objc_exception_throw + 273
3 com.apple.CoreFoundation 0x93a5dee5 +[NSException raise:format:] + 101
4 com.apple.AppKit 0x9139f047 NSNewBitmapBackingStore + 229
5 com.apple.AppKit 0x9139ee7e __79-[NSBitmapImageRep _withoutChangingBackingPerformBlockUsingBackingMutableData:]_block_invoke + 286
6 com.apple.AppKit 0x9139e8b5 -[NSBitmapImageRep _performBlockUsingBacking:] + 39
7 com.apple.AppKit 0x9139ed59 -[NSBitmapImageRep _withoutChangingBackingPerformBlockUsingBackingMutableData:] + 85
8 com.apple.AppKit 0x9139ece4 __57-[NSBitmapImageRep _performBlockUsingBackingMutableData:]_block_invoke + 104
9 com.apple.AppKit 0x9139e8b5 -[NSBitmapImageRep _performBlockUsingBacking:] + 39
10 com.apple.AppKit 0x9139ec75 -[NSBitmapImageRep _performBlockUsingBackingMutableData:] + 85
11 com.apple.AppKit 0x9139ec19 -[NSBitmapImageRep getBitmapDataPlanes:] + 85
12 com.apple.AppKit 0x9139eba9 -[NSBitmapImageRep bitmapData] + 47
13 com.apple.AppKit 0x9149dedc -[NSBitmapGraphicsContext _initWithBitmapImageRep:] + 280
14 com.apple.AppKit 0x9149ddad +[NSGraphicsContext graphicsContextWithBitmapImageRep:] + 71
15 com.xojo.XojoFramework 0x0654daeb 0x653f000 + 60139
16 com.mckernon.lightwright6 0x00007b02 DragItem.Drag%%o + 42
17 com.mckernon.lightwright6 0x03baf42c Display4.DoColumnDrag%%o<DisplayWnd.DisplayWnd> + 6616
18 com.mckernon.lightwright6 0x004c50df DisplayWnd.DisplayWnd.SelCanvas_MouseDrag%%o<DisplayWnd.DisplayWnd>oi4i4 + 3893
19 com.mckernon.lightwright6 0x0080363d Delegate.IM_Invoke%%oi4i4 + 103
20 com.mckernon.lightwright6 0x008036e9 AddHandler.Stub.22%%i4i4 + 74
21 com.xojo.XojoFramework 0x066029c8 0x653f000 + 801224
22 com.xojo.XojoFramework 0x065950d1 0x653f000 + 352465
23 com.xojo.XojoFramework 0x06590283 0x653f000 + 332419
24 com.apple.AppKit 0x91c0f21e -[NSWindow _handleMouseDraggedEvent:] + 35
25 com.apple.AppKit 0x91c86c63 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 6621
26 com.apple.AppKit 0x91c84ed4 -[NSWindow(NSEventRouting) sendEvent:] + 475
27 com.xojo.XojoFramework 0x0659135f 0x653f000 + 336735
28 com.apple.AppKit 0x91ae20be -[NSApplication(NSEvent) sendEvent:] + 2590
29 com.xojo.XojoFramework 0x065810e6 0x653f000 + 270566
30 com.apple.AppKit 0x91366c64 -[NSApplication run] + 838
31 com.xojo.XojoFramework 0x066edbba 0x653f000 + 1764282
32 com.xojo.XojoFramework 0x066ebd94 RuntimeRun + 49
33 com.mckernon.lightwright6 0x001637b8 REALbasic._RuntimeRun + 34
34 com.mckernon.lightwright6 0x05e4b2c0 _Main + 295
35 com.mckernon.lightwright6 0x05e42fc1 main + 36
36 com.mckernon.lightwright6 0x05e91cb9 start + 53