1. 2017-05-17 [Bug libstdc++/68156] --disable-hosted-libstdcxx does gcc-bugs redi at gcc dot gn 2. 2015-11-10 [Bug libstdc++/68156] --disable-hosted-libstdcxx does gcc-bugs redi at gcc dot gn 3. 2015-10-31 [Bug libstdc++/68156] --disable-hosted-libstdcxx does gcc-bugs fedor_qd at mail d 4. 2015-10-31 [Bug libstdc++/68156] --disable-hosted-libstdcxx does gcc-bugs redi at gcc dot gn