PC segmentation fault

[Riccardo Mottola]

Hi,

while working in PC, I got a segmentation fault. I tried to reproduce it 
within GDB, but I couldn't.

I did a post-mortem check on the core and found this:

Core was generated by `ProjectCenter'.
Program terminated with signal 11, Segmentation fault.

<...>

#0  0x0fc7c5f6 in codeType (ch=0x8a05b000) at PCParser.m:99
99        if ( ((*ch > 0x40) && (*ch < 0x5B)) ||
(gdb) bt
#0  0x0fc7c5f6 in codeType (ch=0x8a05b000) at PCParser.m:99
#1  0x0fc7cc73 in -[PCParser parse] (self=0x7d9c6728, _cmd=0x2fc7b4f8)
    at PCParser.m:162
#2  0x0fc7c9c4 in -[PCParser classNames] (self=0x7d9c6728, _cmd=0x29788728)
    at PCParser.m:77
#3  0x0978c988 in -[PCEditor browserItemsForItem:] (self=0x7c03e308,
    _cmd=0x232af690, item=0x8b39db48) at PCEditor.m:539
#4  0x032c5b3b in -[PCProject(ProjectBrowser) contentAtCategoryPath:] (
    self=0x83a73308, _cmd=0x232c0510, categoryPath=0x8bf0e8e8)
    at PCProject.m:1795
#5  0x032e1c9f in -[PCProjectBrowser(ProjectBrowserDelegate) 
browser:createRowsForColumn:inMatrix:] (self=0x8a3c6848, 
_cmd=0x2d9a4d68, sender=0x84c10608,
    column=2, matrix=0x7e241c08) at PCProjectBrowser.m:544
#6  0x0da6ea4d in -[NSBrowser(Private) _performLoadOfColumn:] (
    self=0x84c10608, _cmd=0x2d9a48d8, column=2) at NSBrowser.m:3072
#7  0x0da6c735 in -[NSBrowser reloadColumn:] (self=0x84c10608,
    _cmd=0x232c0428, column=2) at NSBrowser.m:1082
#8  0x032e2810 in -[PCProjectBrowser reloadLastColumnAndNotify:] (
    self=0x8a3c6848, _cmd=0x232be670, yn=0 '\0') at PCProjectBrowser.m:337
#9  0x032e070c in -[PCProjectEditor openEditorForCategoryPath:windowed:] (
    self=0x860dc3c8, _cmd=0x232c0480, categoryPath=0x81ed54a8, 
windowed=Variable "windowed" is not available.
)
    at PCProjectEditor.m:241
#10 0x032e3f27 in -[PCProjectBrowser click:] (self=0x8a3c6848,
---Type <return> to continue, or q <return> to quit---q
_cmd=0x232c02b0, Quit
) at PCProjectBrowser.m:411
#11 0x0da40b22 in -[NSApplication sendAction:to:from:] (self=0x7e833888,
    _cmd=0x2d9bde70, aSelector=0x232c02b0, aTarget=0x8a3c6848,
    sender=0x84c10608) at NSApplication.m:2230
#12 0x0daaba34 in -[NSControl sendAction:to:] (self=0x84c10608,
    _cmd=0x2d9a4aa8, theAction=0x232c02b0, theTarget=0x8a3c6848)
    at NSControl.m:760
#13 0x0da6b656 in -[NSBrowser sendAction] (self=0x84c10608, _cmd=0x2d9a4ae0)
    at NSBrowser.m:2100
#14 0x0da6b45f in -[NSBrowser doClick:] (self=0x84c10608, _cmd=0x2d9a4d30,
    sender=0x7e243208) at NSBrowser.m:2182
#15 0x0da40b22 in -[NSApplication sendAction:to:from:] (self=0x7e833888,
    _cmd=0x2d9bde70, aSelector=0x2d9a4d30, aTarget=0x84c10608,
    sender=0x7e243208) at NSApplication.m:2230
#16 0x0daaba34 in -[NSControl sendAction:to:] (self=0x7e243208,
    _cmd=0x2d9e8188, theAction=0x2d9a4d30, theTarget=0x84c10608)
    at NSControl.m:760
#17 0x0db07c17 in -[NSMatrix sendAction:to:] (self=0x7e243208,
    _cmd=0x2d9e8188, theAction=0x0, theTarget=0x0) at NSMatrix.m:2170
#18 0x0db07d0a in -[NSMatrix sendAction] (self=0x7e243208, _cmd=0x2d9e8120)
    at NSMatrix.m:2146
#19 0x0db0a5e0 in -[NSMatrix _mouseDownListMode:] (self=0x7e243208,
    _cmd=0x2d9e82e8, theEvent=0x7e940b88) at NSMatrix.m:2486

the "ch" is:
(gdb) p ch
$1 = (unichar *) 0x8a05b000


but how can I get a segmentation fault in the line shown in #0 ? it is 
only a comparison and the char value is apparently valid, I see no array 
access or other pointer usage.

Riccardo