26810258: PXSourceList hangs immediately on Sierra

[openradar-mirror]

Description

Summary:
The very popular PXSourceList framework (https://github.com/Perspx/PXSourceList) crashes when trying to load from nib on macOS Sierra.

Steps to Reproduce:

1. Open the attached sample project and run it (or download from https://github.com/Perspx/PXSourceList).
2. When the initial window tries to appear it will crash within NSProxy.

Expected Results:
You expect the initial window to appear.

Actual Results:
It crashes and here is the stack trace:
#0 0x00007fff8ec74322 in _forwarding_ ()
#1 0x00007fff8ec73e88 in forwarding_prep_0_ ()
#2 0x00007fff90731699 in -NSProxy isKindOfClass:
#3 0x00007fff8d0ede0c in -NSTableView _setDataSourceIvar:
#4 0x00007fff8cab8028 in -NSOutlineView setDataSource:
#5 0x00000001000c0cb1 in -[PXSourceList setDataSource:] at /Users/gbrowning/Downloads/PXSourceList-master-2/PXSourceList/PXSourceList.m:109
#6 0x00007fff8c98753e in -NSIBObjectData nibInstantiateWithOwner:options:topLevelObjects:
#7 0x00007fff8c97e86a in loadNib ()
#8 0x00007fff8c97ddae in +NSBundle(NSNibLoading) _loadNibFile:nameTable:options:withZone:ownerBundle:
#9 0x00007fff8c97db63 in -NSBundle(NSNibLoading) loadNibNamed:owner:topLevelObjects:
#10 0x00007fff8c97d920 in +NSBundle(NSNibLoading) loadNibNamed:owner:
#11 0x00007fff8c979084 in NSApplicationMain ()

Version:
10.12 Beta (16A201w)

Notes:

Configuration:
Hardware Overview:

Model Name: iMac
Model Identifier: iMac13,2
Processor Name: Intel Core i7
Processor Speed: 3.4 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 32 GB
Boot ROM Version: IM131.010A.B09
SMC Version (system): 2.11f14

Attachments:
'PXSourceList-master.zip' was successfully uploaded.

Product Version: 10.12 Beta (16A201w)
Created: 2016-06-15T10:49:23.386300
Originated: 2016-06-15T00:00:00
Open Radar Link: http://www.openradar.me/26810258