sounds like an attribute can't encode itself. I know CGColorRef doesn't know
how to encode itself, which is what CoreText uses to render. If try and pull
the string out and serial size the attributes separately, or find a way to
serialize CGColorRef. Sorry I'm not much help.
Please excuse mobile typos
> On Jan 19, 2014, at 10:54 AM, Markus Spoettl <ms_li...@shiftoption.com> wrote:
>
> Hello,
>
> I got a crash log from a user that's mildly puzzling. It happens somewhere
> deep down CoreText it seems, while encoding an NSAttributedString (whose
> content I don't know). Any ideas how it can some to this?
>
> My app has a standard UITextView that feeds the model property that is
> encoded here. There is no processing of the attributed string going on in the
> App. The UITextView is created dynamically (not loaded from a NIB), it is
> embedded in a custom UITableViewCell (just in case that influences the way it
> constructs attributed strings it spits out).
>
> Google turns up some crashes with a similar top end of the call stack, but
> those happen while drawing the attributed string. Does iOS draw a
> NSAttributedString in order to object-encode it?
>
> The code that eventually ends up crashing is
>
> - (void)encodeWithCoder:(NSCoder *)encoder
> {
> ....
> [encoder encodeObject:notes forKey:@"notes"];
> ....
> }
>
> Does this ring a bell for anyone?
>
> Regards
> Markus
>
> Hardware Model: iPhone6,2
> Process: MyApp [3818]
> Path:
> /var/mobile/Applications/9C395437-7BC5-47A8-B4BE-C659F61F5628/MyApp.app/MyApp
> Identifier: com.bla.MyApp
> Version: 162 (1.0)
> Code Type: ARM-64 (Native)
> Parent Process: launchd [1]
>
> Date/Time: 2014-01-19 06:44:51.347 +0000
> OS Version: iOS 7.0.4 (11B554a)
> Report Version: 104
>
> Exception Type: EXC_BAD_ACCESS (SIGSEGV)
> Exception Subtype: KERN_INVALID_ADDRESS at 0x7300786966657250
> Triggered by Thread: 0
>
> Thread 0 Crashed:
> 0 ??? 0x7300786966657250 0 + 8286755708446536272
> 1 CoreText 0x000000018c689bd8
> TBaseFont::CalculateFontMetrics(bool) const + 100
> 2 CoreText 0x000000018c699930
> TComponentFont::CalculateFontMetrics(bool) const + 52
> 3 CoreText 0x000000018c689a2c TBaseFont::InitFontMetrics() const +
> 64
> 4 CoreText 0x000000018c70bec8 TBaseFont::GetStrikeMetrics(double,
> CGAffineTransform const*, bool) const + 96
> 5 CoreText 0x000000018c689774 TFont::InitStrikeMetrics() const + 64
> 6 CoreText 0x000000018c689704 CTFontGetAscent + 120
> 7 GraphicsServices 0x00000001917ffc14 GSFontEnsureExtraData + 256
> 8 GraphicsServices 0x0000000191802940 GSFontGetExtraData + 52
> 9 UIFoundation 0x0000000194c3ee00 -[UIFont isIBTextStyleFont] + 12
> 10 UIFoundation 0x0000000194c3e904 -[UIFont encodeWithCoder:] + 112
> 11 Foundation 0x000000018c9dc210 _encodeObject + 1244
> 12 Foundation 0x000000018c9dd74c -[NSKeyedArchiver
> _encodeArrayOfObjects:forKey:] + 468
> 13 Foundation 0x000000018c9dd374 -[NSDictionary(NSDictionary)
> encodeWithCoder:] + 1024
> 14 Foundation 0x000000018c9dc210 _encodeObject + 1244
> 15 Foundation 0x000000018c9e9a80 -[NSAttributedString
> encodeWithCoder:] + 252
> 16 Foundation 0x000000018c9dc210 _encodeObject + 1244
> 17 MyApp 0x000000010014bb64 -[Activity encodeWithCoder:]
> (SRC.m:2319)
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