Complicated dg test cases

[Segher Boessenkool]

> While preparing to try this, I noticed that the existing compat
> patches seem to have an undefined exit status.  This is bad, isn't it?
> Unless I'm confused, we should add a 'return 0;' to the end of 
> g++.dg/compat/*/*_main.C, e.g.
>
> --- gcc-3.3.2/gcc/testsuite/g++.dg/compat/abi/bitfield1_main.C.old     
>  Mon Feb  9 03:10:11 2004
> +++ gcc-3.3.2/gcc/testsuite/g++.dg/compat/abi/bitfield1_main.C  Mon 
> Feb  9 03:10:49 2004
> @@ -10,4 +10,5 @@
>  main ()
>  {
>    bitfield1_x ();
> +  return 0;
>  }
>
> I haven't seen these fail because of the missing return, but maybe 
> that's just luck.

C99, 5.1.2.2.3/1:

	"...  reaching the } that terminates the main function returns a value 
of 0."

so it's not necessary to explicitly return 0 (at least, in C99).

But yeah, it's cleaner, of course.


Segher