[Bug plugins/59028] gengtype 4.7 fails with operator inside GTY-ed struct

[bstarynk at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59028

--- Comment #2 from Basile Starynkevitch <bstarynk at gcc dot gnu.org> ---
At least MELT 1.0 for GCC 4.8 did not requires the ugly workarounds in MELT
1.0.1 needed by GCC 4.7