http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47947
--- Comment #2 from David Edelsohn <dje at gcc dot gnu.org> 2011-03-02 22:08:51 UTC --- Did you build the application as a 32 bit or 64 bit application? If you used the default 32 bit on AIX did you try using -maix64?