Example of such toolchain is clang-12:
$ nix-build -E 'with import ./. { }; gdome2.override { stdenv = clang12Stdenv; }'
...
libgdome/xpath/gdome-xpath-xpnsresolv.c:33:
multiple definition of `gdome_xpath_xpnsresolv_vtab';
gdome-xpath.lo:libgdome/xpath/gdome-xpath-xpnsresolv.h:45: first defined here
