[Newcompiler] What compiler is used when debugger needs line information

[Stéphane Ducasse]

Hi klaus

I think that you should give to marcus more context since I'm curious  
to see
whether the question I asked could be solved (even with nice meta  
information for the debugger).
Could you sum it up?

Stef
On 29 mai 07, at 14:06, Klaus D. Witzel wrote:

> List,
>
> in an offline email thread (with Stef, Roel, Damien and Math) about
> optimizations which could be done by Smalltalk compiler, we  
> mentioned the
> debugger needs information which is not in the bytecodes of a method.
>
> Imagine a method X was compiled with the new compiler and then the
> preference is reset for using the old compiler. Now when X is  
> debugged,
> the debugger compiles X's source code for obtaining source code  
> positions
> (line information).
>
> It is quite possible this information no longer matches the method  
> (both
> compilers can produce quite different bytecodes).
>
> How's that handled now?
>
> Cheers
> Klaus