Function, file and line information out of '_Unwind_Context' ptr

[Gerrit Bruchhäuser]

Hi all,

how can I retreive a backtrace which includes function-name, file and 
line information on Tr64-OSF-Alpha (glibc is not supported on this 
platform).
Well, I tried:
---
#include <iostream>
#include <stdlib.h>
#include <unwind.h>

static _Unwind_Reason_Code
Trace_cb(struct _Unwind_Context *, void *)
{
       std::cout << "Function: " << std::endl;
       return _URC_CONTINUE_UNWIND;
}


void
foo()
{
       _Unwind_Backtrace(Trace_cb, NULL);
}

int main()
{
       foo();
       return 0;
}
---

But I don't know how to reteive the information out of 'Unwind_Context' 
pointer.
Any idea??

Many thanks,
Gerrit