Re: Crash on app start due to icon

[Riccardo Mottola]

Hi,

I was just finished updating my NetBSD laptop (8.0 is out) and 
rebuilding all packages, so everything is clean, then I rebuilt GNUstep too!

Here it also crashes! making the bug very reproducable across platforms. 
Here the trace is similar:
Program received signal SIGSEGV, Segmentation fault.
0xade46638 in objc_msg_lookup () from /usr/lib/libobjc.so.4
(gdb) bt
#0  0xade46638 in objc_msg_lookup () from /usr/lib/libobjc.so.4
#1  0xae40f5b5 in -[NSApplication setApplicationIconImage:] 
(self=0xae40c6e2 <-[NSApplication(Private) _loadAppIconImage]+577>, 
_cmd=0xab2172c0,
    anImage=0xae6e1638 <_OBJC_SELECTOR_TABLE+3256>) at NSApplication.m:2392
#2  0xae6e1630 in _OBJC_SELECTOR_TABLE () from 
/System/Library/Libraries/libgnustep-gui.so.0.26.2
#3  0xae40c6e2 in -[NSApplication(Private) _loadAppIconImage] 
(self=0xab2172c0, _cmd=0xae6e1008 <_OBJC_SELECTOR_TABLE+1672>) at 
NSApplication.m:3834
#4  0xae4158d8 in -[NSApplication _init] (self=0xab2172c0, 
_cmd=0xae6e1068 <_OBJC_SELECTOR_TABLE+1768>) at NSApplication.m:885
#5  0xae016c16 in -[NSObject performSelector:withObject:] 
(self=0xab2172c0, _cmd=0xae2f7138 <_OBJC_SELECTOR_TABLE+280>,
    aSelector=0xae6e1068 <_OBJC_SELECTOR_TABLE+1768>, 
anObject=0xab2172c0) at NSObject.m:2009
#6  0xae08940a in -[NSObject(NSThreadPerformAdditions) 
performSelector:onThread:withObject:waitUntilDone:modes:] (self=0xab2172c0,
    _cmd=0xae2f7240 <_OBJC_SELECTOR_TABLE+544>, aSelector=0xae6e1068 
<_OBJC_SELECTOR_TABLE+1768>, aThread=<optimized out>, anObject=0xab2172c0,
    aFlag=1 '\001', anArray=0xab2a3800) at NSThread.m:2136
#7  0xae084c68 in -[NSObject(NSThreadPerformAdditions) 
performSelectorOnMainThread:withObject:waitUntilDone:modes:] 
(self=self@entry=0xab2172c0,
    _cmd=_cmd@entry=0xae2f7248 <_OBJC_SELECTOR_TABLE+552>, 
aSelector=aSelector@entry=0xae6e1068 <_OBJC_SELECTOR_TABLE+1768>,
    anObject=anObject@entry=0xab2172c0, aFlag=aFlag@entry=1 '\001', 
anArray=0xab2a3800) at NSThread.m:2095
#8  0xae087272 in -[NSObject(NSThreadPerformAdditions) 
performSelectorOnMainThread:withObject:waitUntilDone:] (self=0xab2172c0,
    _cmd=0xae6e1070 <_OBJC_SELECTOR_TABLE+1776>, aSelector=0xae6e1068 
<_OBJC_SELECTOR_TABLE+1768>, anObject=0xab2172c0, aFlag=1 '\001') at 
NSThread.m:2105
#9  0xae414115 in -[NSApplication init] (self=0xab2172c0, 
_cmd=0xae6e0dd0 <_OBJC_SELECTOR_TABLE+1104>) at NSApplication.m:984
#10 0xae40a39e in +[NSApplication sharedApplication] (self=0xae6e19c0 
<_OBJC_Class_NSApplication>, _cmd=0xae6d57c8 <_OBJC_SELECTOR_TABLE+872>)
    at NSApplication.m:851
#11 0xae3f0c60 in NSApplicationMain (argc=argc@entry=1, 
argv=argv@entry=0xbfb1fe60) at Functions.m:78
#12 0x0804abef in gnustep_base_user_main (argc=1, argv=0xbfb1fe60) at 
main.m:15
#13 0xae12da28 in main (argc=1, argv=0xbfb1fe60, env=0xbfb1fe68) at 
NSProcessInfo.m:1002
#14 0x0804a614 in ___start ()
#15 0x0804a508 in _start ()


(gdb) p anImage
$1 = (struct NSImage *) 0xae6e1638 <_OBJC_SELECTOR_TABLE+3256>
(gdb) p *anImage
$2 = {{isa = 0x1d006b}, _name = 0xae6dde84 <_OBJC_METH_VAR_TYPE_0>, 
_fileName = 0x16009c, _size = {width = -5.40798517e-11, height = 
1.92876542e-39},
  _flags = {archiveByName = 0, scalable = 0, dataRetained = 0, flipDraw 
= 0, sizeWasExplicitlySet = 0, useEPSOnResolutionMismatch = 1,
    colorMatchPreferred = 0, multipleResolutionMatching = 0, 
cacheSeparately = 0, unboundedCacheDepth = 0, syncLoad = 0}, _reps = 
0xa006e,
  _color = 0xae6dd7e0 <_OBJC_METH_VAR_TYPE_437>, _lockedView = 
0x1a006e, _delegate = 0xae6dde84 <_OBJC_METH_VAR_TYPE_0>, _cacheMode = 
1507351}


I tried compiling in debug without optimization, and it works! This 
hints even more at memory corruption, more than a retain issue.

Riccardo