llvm/llvm/test/tools/llvm-rc/Inputs/utf8.rc

STRINGTABLE {
  // One can't pass UTF-8 sequences via multiple escaped chars - in narrow
  // strings in UTF-8 mode, only ASCII chars can be entered via escapes.
  1 "åäö © \x61"
  2 L"åäö © \xe5\xe4\366 \251"
}