Debugging "SIGSEGV" error?

Questions & Answers
1

After playing my game for a couple of minutes, the game freezes with "program received single: "SIGSEGV". After I press pause/continue in Xcode, I get this:

Data Formatters temporarily unavailable, will re-try after a 'continue'. (Unknown error loading shared library "/Developer/usr/lib/libXcodeDebuggerSupport.dylib")

That's all the info I've been able to get from the crash. Is there any way to debug this error? I'm running xcode 3.2.2, SDK 3.0 and Unity 1.7.

2

Have you tried doing what that message is hinting at, and press the 'continue' button in the Xcode debugger window?

3

I found a great answer to this on the forums today here.

Follow the instructions there to disable the debug stripping on your debug build, then within gdb when a SIGSEGV occurs, run 'thread apply all bt'.

This helped me track down an error that was occurring in a really unusual line that must have been a timing bug.