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Re: NSObject Foundation tool memory issue?
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Re: NSObject Foundation tool memory issue?


  • Subject: Re: NSObject Foundation tool memory issue?
  • From: Niko Matsakis <email@hidden>
  • Date: Thu, 8 Dec 2005 10:46:02 +0100

Bus errors are usually caused my pointers that are not properly aligned, or other accesses to invalid memory.

If you load this program into gdb and execute it, you will be able to get a backtrace of where the bus error occurred. Do something like:

gdb -args ./a.out arg1 arg2
(within gdb:)
run
(after crash:)
bt


Niko

On Dec 8, 2005, at 9:17 AM, Lee Cullens wrote:

I'm new to ObjC/Cocoa and have a dumb problem I can't seem to find. I'm using Terminal gcc to compile and link a small Foundation Tool I' m working on. I have not really got into Xcode yet.

Anyway, the short of it is that at the end of my test output I see the line "Bus error." I "assume" for the moment that it is an indication of a memory problem in my code, but I'm having problems tracking it down. I've read everything I could find about memory management (NSAutoreleasePool) and think I understand ownership, responsibilities, nested pools and the like.

My question is: What all (generally :-) might cause a Bus error and is my concentration on a memory management issue a potential candidate? If it is a memory management issue, what tools, methods, whatever might help me find the problem. I'm old-school (a retired SE dating back to the 60's) and have a trace option in my code, but have not yet been able to find something that might cause the issue. So I'm resorting to bothering you-all for possible pointers :-)

Thank you,
Lee C

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