Re: clang / libobjc2 stability / crashes

[Riccardo Mottola]

Hi,

as a reference. The stacktrace of hitting "set font" in Terminal is:

(gdb) bt
#0  +[NSFont _fontWithName:size:role:] (self=0xbfbfdc1c, 
_cmd=0xbfbfdc1c, fontSize=Error accessing memory address 0x21b: Bad address.
)
    at NSFont.m:749
#1  0x28315ef2 in +[NSFont fontWithName:size:] (self=0xbfbfdc7c, 
_cmd=0xbfbfdc7c,
    aFontName=0xbfbfdc7c, fontSize=-1.49891615) at NSFont.m:739
#2  0x283244c6 in -[NSFontPanel(Private) _fontForSelection:] 
(self=Unhandled dwarf expression opcode 0xd4
) at NSFontPanel.m:892
#3  0x283208e4 in -[NSFontPanel panelConvertFont:] (self=dwarf 
expression stack underflow
) at NSFontPanel.m:317
#4  0x2831c5ed in -[NSFontManager convertFont:] (self=Unhandled dwarf 
expression opcode 0x0
) at NSFontManager.m:394
#5  0x0807191a in -[TerminalViewDisplayPrefs changeFont:] (self=dwarf 
expression stack underflow
) at TerminalViewPrefs.m:504
#6  0x2a84d777 in ffi_call_SYSV () from /usr/local/lib/libffi.so.5
#7  0x2a84d5be in ffi_call (cif=0x2ad2e520,
    fn=0x80718a0 <-[TerminalViewDisplayPrefs changeFont:]>, rvalue=0x0, 
avalue=0x2ad2e558)
    at src/x86/ffi.c:326
#8  0x28b09d44 in -[GSFFIInvocation invokeWithTarget:] 
(self=dwarf2_read_address: Corrupted DWARF expression.
) at GSFFIInvocation.m:420
#9  0x08079846 in -[PreferencesWindowController forwardInvocation:] 
(self=Unhandled dwarf expression opcode 0x1
)
    at PreferencesWindowController.m:260
#10 0x28b0a67e in GSFFIInvocationCallback (args=Variable "args" is not 
available.
) at GSFFIInvocation.m:650
#11 0x2a84d4ae in ffi_closure_SYSV_inner (closure=0x2b88a008, 
respp=0xbfbfdf5c, args=0xbfbfdf70)
    at src/x86/ffi.c:414
#12 0x2a84d84a in ffi_closure_SYSV () from /usr/local/lib/libffi.so.5
#13 0x2827bd3c in -[NSApplication sendAction:to:from:] (self=0xbfbfdf70, 
_cmd=0xbfbfdf70,
    aSelector=Variable "aSelector" is not available.
) at NSApplication.m:2232
#14 0x2831ebb4 in -[NSFontManager sendAction] (self=dwarf2_read_address: 
Corrupted DWARF expression.
) at NSFontManager.m:1024
#15 0x2831c4d2 in -[NSFontManager modifyFontViaPanel:] 
(self=dwarf2_read_address: Corrupted DWARF expression.
) at NSFontManager.m:356
#16 0x28324154 in -[NSFontPanel(Private) ok:] (self=0xbfbfe030, 
_cmd=0xbfbfe030,
    sender=0xbfbfe030) at NSFontPanel.m:829
#17 0x2827bd3c in -[NSApplication sendAction:to:from:] (self=0xbfbfe060, 
_cmd=0xbfbfe060,
    aSelector=Variable "aSelector" is not available.
) at NSApplication.m:2232
#18 0x282eebc0 in -[NSControl sendAction:to:] (self=That operation is 
not available on integers of more than 8 bytes.