[PATCH] fix AIX fortran builds

[Thomas Koenig]

Hi Jim,

> If I add a call to gcc_unreachable after the longjmp call, then it
> builds on both linux and AIX. Â Anyone have a better idea on how to fix
> this? Â If I don't get any responses in a few days, I will check it in
> under the obvious rule, since it fixes a build failure.

The patch is OK.

Thanks!

Regards

	Thomas