https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63622
--- Comment #12 from howarth at bromo dot med.uc.edu --- This looks like fallout from... https://gcc.gnu.org/ml/libstdc++-cvs/2014-q4/msg00080.html https://gcc.gnu.org/ml/libstdc++-cvs/2014-q3/msg00181.html where the files moved to c++11 in gcc trunk from c++98 in gcc 4.9.2 now have undefined symbols... [MacPro:libstdc++-v3/src/c++11] howarth% nm streambuf-inst.o | grep ZNSt15basic_streambufIcSt11char_traitsIcEE9underflowEv U __ZNSt15basic_streambufIcSt11char_traitsIcEE9underflowEv compared to gcc 4.9.2 [MacPro:libstdc++-v3/src/c++98] howarth% nm streambuf-inst.o | grep ZNSt15basic_streambufIcSt11char_traitsIcEE9underflowEv 0000000000000040 T __ZNSt15basic_streambufIcSt11char_traitsIcEE9underflowEv Were these checkins made after darwin stopped bootstrapping?
