[Bug c++/49152] Unhelpful diagnostic for iterator dereference

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49152

--- Comment #32 from Jason Merrill <jason at gcc dot gnu.org> 2012-04-02 15:57:16 UTC ---
(In reply to comment #31)
> Well, that is reassuring. Then, will we still pretty-print expressions in
> diagnostics once we have the caret?

No, there should be no need to.

> Is there a GCC way to detect that the output is a terminal?

I don't know if there's a usual GCC way, but isatty seems like a good way.