Re: gcc5 libstdc++ abi transition breaks clang building against libstdc++, the default in debian

[Rebecca N. Palmer]

clang doesn't support the abi_tag attribute, see:
https://llvm.org/bugs/show_bug.cgi?id=23529

And yet I couldn't find a single bug report in debians llvm packages
mentioning this problem;

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=797917