This builtin, that would be *so* useful in the implementation of std::complex cannot be enabled at the moment due to this issue (see also builtins.def):
http://gcc.gnu.org/ml/gcc-patches/2003-09/msg00510.html We should *really* find a way to work around the problem! (not sure whether the proper component is middle-end or libstdc++-v3 ;) -- Summary: Enable __builtin_clog Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: enhancement Priority: P2 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pcarlini at suse dot de CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21743
