[ddbg] finding source files

[Bill Baxter]

Jascha Wetzel wrote:
> 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.

Great.  Here you go.
I don't know if all the different files are strictly necessary to 
reproduce it but this does reproduce the problem for me.

When you run it, 'us' should give frame 2 as something like main.d:22.
But doing "f 2" then "ps" says "source file for current location unknown".

ps *does* try to print source from the current active frame, right?  If 
instead it always tries to print the source of frame 0 then that would 
explain it, but that's odd behavior and isn't in line with how other 
debuggers work.

This is with ddbg v0.10b, DMD 1.021 compiler.

--bb
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