• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: crashes on intel
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: crashes on intel


  • Subject: Re: crashes on intel
  • From: Buddy Kurz <email@hidden>
  • Date: Sat, 3 Jun 2006 08:03:37 -0700

FWIW: I experienced a similar problem when an application randomly crashed at the same spot on Intel but worked OK on PPC.
I was tracking a changing string value using something like if (! ([oldValue isEqualTo:newValue]) {...}
The crash occurred on Intel when the oldValue had not been set.
The problem was either -NSString isEqualTo:(NSString)arg crashing on a nil object value (on intel) or a non-nil un-initialized object pointer in the method. I was unable to duplicate the problem in a simpler test application.


My solution was to initialize the oldValue to @"" (I was assuming a nil value was the culprit)
In retrospect, I'm wondering if there was just some random value in the un-initialized variable.


Either way, there was a definite difference between platforms.





On Jun 3, 2006, at 3:38 AM, Karim Morsy wrote:

Hi,

my cocoa app runs without any problems on PPC based macs but I'm constantly getting the same crash on intel, however, it appears to occur very indeterminately.
I haven't been able to figure out where the problem exactly lies and how to reproduce it. the debugger always reports the same error.
can anybody help interpret this:
Unable to disassemble objc_msgSend_rtp.
(gdb) t a a bt
Thread 4 (process 9664 thread 0x9603):
#0 0xffff0b08 in objc_msgSend_rtp ()
Cannot access memory at address 0x4


it also says: Function "_pthread_body" not defined.

any hints would be much appreciated!

thanks in advance,
Karim

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden

_______________________________________________ Do not post admin requests to the list. They will be ignored. Cocoa-dev mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
  • Follow-Ups:
    • Re: crashes on intel
      • From: Shawn Erickson <email@hidden>
References: 
 >crashes on intel (From: Karim Morsy <email@hidden>)

  • Prev by Date: Re: 2nd fullscreen window and keyboard input
  • Next by Date: Link error when building with Release
  • Previous by thread: Re: crashes on intel
  • Next by thread: Re: crashes on intel
  • Index(es):
    • Date
    • Thread