[Bug c++/62314] Fix-it Hints

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62314

--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I've committed support for fix-it hints within diagnostics to trunk (for gcc 6)
as r230674 (along with one trivial example of a fix-it hint in the C frontend).

Keeping this bug open, since it has lots of examples of fix-it hints that we
could provide.