http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51146
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-11-15 20:20:48 UTC --- (In reply to comment #3) > For sure in the library there is nothing to fix, note in particular that the > implementation does not include <complex.h>, neither names clog, only > __builtin_clog. But __builtin_clog always expands to extern "C" clog. There is not much to be done in the compiler here or libstdc++ really. Just have to understand clog is a reserved name under C99.