http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33067
--- Comment #16 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-10-10 12:44:42 UTC --- Harcoding 6 in pp_c_floating_constant leads to: 33067.C:2:18: error: no match for ‘operator<’ in ‘1.1e+0 < t’