GNAT, SJLJ and zero-cost exception handling

[Eric Botcazou]

> I can confirm that gnat gcc 4.1.1 does *not* correctly handle SJLJ
> exceptions, at least on MinGW where SJLJ is currently the only viable EH
> mechanism.

The 2 SJLJ mechanisms should be available there, so you could try to use 
GCC SJLJ instead of GNAT SJLJ (set ZCX_By_Default to True in system.ads).

> Eric, how difficult would it be to backport a fix from 4.2 to 4.1?

Too invasive I'd think.

-- 
Eric Botcazou