https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48200
--- Comment #14 from Xi Ruoyao <ryxi at stu dot xidian.edu.cn> --- (In reply to Jan Hubicka from comment #13) > What is status of this bug in general? I must admit I thought we have issues > long solved here :( It still exists in 8.1. Libstdc++ uses top level asm statement for symbol versioning. Then symbol std::istream::ignore(long)@GLIBCXX_3_4 just disappears, and libstdc++.so can't be used (this symbol becomes *UND*).