Hi, I'm currently trying to implement the exception handling in GNU Modula-2 and was wondering which of the following two routes to use. I was initially enthusiastic about using __builtin_setjmp/ __builtin_longjmp as Modula-2 exceptions can be implemented with these mechanisms - and it would also be tantalisingly easy to code..
However, upon searching this list I see that there are a number of problems with __builtin_setjmp and __builtin_longjmp and have begun to examine TRY_CATCH_EXPR nodes instead. It seems that if this later route is taken then the front end also needs to add: DEFTREECODE (THROW_EXPR, "throw", tcc_unary, 1) to its language tree.def and gimplify this. Before I embark on this I'd like to ask whether using __builtin_longjmp/__builtin_setjmp is definitely the wrong way to go? regards, Gaius
