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divide by zero exception in time() function
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divide by zero exception in time() function


  • Subject: divide by zero exception in time() function
  • From: Buddy Kurz <email@hidden>
  • Date: Fri, 9 Jun 2006 13:45:33 -0700


Google has not been my friend in this matter - nor has my archive of 60,000 list eMails.
My app crashes occasionally and randomly apparently due to a divide by zero in the gettimeofday function (presumably in CoreFoundation)


Are there issues with this function being called by multiple threads?
Any other suggestions or comments? Workaround?

I have included parts of two crash logs - the first from my app, the second if found in a blog posted in march of this year.

any help would be appreciated.

-----------------------------------------------------------------

PID:    2475
Thread: 20

Exception:  EXC_ARITHMETIC (0x0003)
Codes:      EXC_I386_DIV (divide by zero)
...

Thread 20 Crashed:
0 <<00000000>> 0xffff0329 __gettimeofday + 73 (cpu_capabilities.h: 177)
1 libSystem.B.dylib 0x90004edb gettimeofday + 43
2 libSystem.B.dylib 0x90004e8d time + 29


-----------------------------------------------------------------

"Actually, it looks like the problem is in CoreFoundation:"

Exception: EXC_ARITHMETIC (0×0003)
Codes: EXC_I386_DIV (divide by zero)

Thread 0 Crashed:
0 > __gettimeofday + 73 (cpu_capabilities.h:177)
1 libSystem.B.dylib 0×90004ffb gettimeofday + 43
2 com.apple.CoreFoundation 0×9082d7a6 CFAbsoluteTimeGetCurrent + 31
3 com.apple.CoreFoundation 0×90854a0e CFRunLoopTimerSetNextFireDate + 61
4 com.apple.HIToolbox 0×92f58f29 SetEventLoopTimerNextFireTime + 106
5 com.apple.iTunes 0×00205d2c 0×1000 + 2116908

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