GNAT, SJLJ and zero-cost exception handling

[Eric Botcazou]

> Do you mean that it does not work with GCC 4.1.1?

Yes, it doesn't work in the 4.1.x series.

> > [2] describes GCC SJLJ, which is not the same as GNAT SJLJ.
>
> How different?

The latter is a "primitive" form of SJLJ, the former is more structured.

> I was somehow suspecting that gnat1 supports both ZCX and SJLJ, looks in
> system.ads, and decides what kind of assembly code it needs to emit based on
> that.  Am I correct? 

Yes, you are.

> In that case, I need just one compiler and two libgnats, right?

Right.

-- 
Eric Botcazou