[Bug middle-end/54809] gengtype ignore mark_hook in struct nested in union

[bstarynk at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54809

--- Comment #2 from Basile Starynkevitch <bstarynk at gcc dot gnu.org> 2012-10-04 08:09:42 UTC ---
Run
   gengtype  -D -v \
   -r gtype.state \
   -P _g-basilemarkh.h basilemarkh.h

The bug appears on GCC 4.6, GCC 4.7 and GCC 4.8 (trunk svn rev 192031)