[ddbg] finding source files

[Jascha Wetzel]

Bill Baxter wrote:
> What's up with finding source files in ddbg?
> 
> What I do most for testing is run my program.
> If it crashes, I run it again inside ddbg.
> It crashes again and then I type 'ps'.
> 
> At that point it pretty much always tells me "source file for current 
> location unknown".  Ok, so that's probably because I'm on the wrong 
> frame (I'd think even then it should print out the topmost frame that 
> does have source).  But if I 'f 2' to get to what should be my code it 
> *still* says 'source file for current location unknown'.
> 
> 'lsm' though, tells me all the files just fine.
> 
> If I set a breakpoint and run to that, though, 'ps' works.
> 
> Any chance listing could be made to work without having to set breakpoints?
> 
> --bb

i will add printing the "last known" source position in the next 
release. it should certainly work in all the other situations.
i will try to reproduce this problem. it would be great if you could 
provide me with a testcase to do so.