Re: malloc/free problems within a thread
Re: malloc/free problems within a thread
- Subject: Re: malloc/free problems within a thread
- From: Ken Tozier <email@hidden>
- Date: Sat, 29 Jul 2006 17:50:42 -0400
Well here are a couple of the errors I'm seeing
PMServer X(21089,0x1863800) malloc: *** error for object 0x1861c00:
incorrect checksum for freed object - object was probably modified
after being freed, break at szone_error to debug
PMServer X(21089,0x1863800) malloc: *** set a breakpoint in
szone_error to debug
I set the breakpoint as suggested but the debugger seems to be
basically worthless. It keeps throwing up this error ""MyApp exited
with status (1). The Debugger is still running. Use "Restart" to
debug again". Problem is though the restart button is grayed out and
the debugger it isn't in fact doing anything when I get this message.
I submitted a debugger specific question related to this on XCode forum.
It seems like the NSAutorelease pool destroys all objects created
within it regardless of whether they have a retain or not. That's the
only thing I can think of. Is that what it does?
On Jul 29, 2006, at 4:47 PM, Ken Tozier wrote:
Hi
I have a process that spawns threads and inside these threads I
malloc/free some memory but I'm getting either "xxx has exited due
to signal 11 (SIGSEGV)" or "sigbus 10" errors. I know from past
experience that these most likely indicate a non-retained object,
problem is though that I checked very carefully and everything that
I want to keep around is definitely retained. Could the fact that
some objects were created inside a thread's NSAutorelease alloc/
release override the retain commands?
Thanks
Ken
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