Re: [Gm2] latest fixes to gm2

[Izo]

Gaius Mulley wrote:

>   *  the -Wunbounded-by-reference and -Wverbose-unbounded.
>      Here is the extract from gm2.texi
> ----
> enable optimization of unbounded parameters by attempting to pass non
> @code{VAR} unbounded parameters by reference.  This optimization
> avoids the implicit copy inside the callee procedure. GNU Modula-2
> will only allow unbounded parameters to be passed by reference if,
> inside the callee procedure, they are not written to, no address is
> calculated on the array and it is not passed as a @code{VAR}
> parameter.  Note that it is possible to write code to break this
> optimization, therefore this option should be used carefully.
> For example it would be possible to take the address of an array, pass
> the address and the array to a procedure, read from the array in
> the procedure and write to the location using the address parameter.
>
> Due to the dangerous nature of this option it is not enabled
> when the -O option is specified.
>  
Gaius, I do not understand really the reason for the use of this option. 
What situation can it be useful in ?

> ----
>
>   *  nearly finished ISO SYSTEM 
Glad to see this. I've not been around for a while since my project is 
in one of its peaks, but I am certainly going to return to GM2 and use 
it in case it supports various gcc versions not only the single one as 
it is the case now (or I am wrong?), and of course, if it is prepared to 
be built to cross-compile to various targets. Right now I am using the 
XDS-C and it is pain to debug. From the point I am now at I have two 
options - complete C++ rewrite of the existing M2 code or GM2.


And I've got two questions:

1. What about the .so support ? Is there provided the main body for 
_fini and _init ?
2. Debugging formats - does the GM2 emit the dwarf-2 and stabs+ or it 
just depends on the gcc version used ?

Iztok