[ddbg] finding source files

[Bill Baxter]

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

[Jascha Wetzel]

Post by Bill Baxter
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.

[Bill Baxter]

Post by Jascha Wetzel

Post by Bill Baxter
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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[Jascha Wetzel]

Post by Bill Baxter

Post by Jascha Wetzel

Post by Bill Baxter
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

ah ic, i fixed that one already in my soon-to-be 0.11 version.
i've put a current build here:
http://ddbg.mainia.de/Ddbg-0.11-beta%20preview.zip

the ps command was ignoring the selected frame and always using the
current instruction pointer.