Preliminary/experimental support for DWARF v5 is in Clang/LLVM 7.0. If you compile with `-gdwarf-5 -O0` you should get debug information that is fully compliant with DWARF v5, including the new .debug_names accelerator tables. Higher optimization levels will likely emit some debug-info sections in DWARF v4 format; type units and split DWARF are known not to be compliant. But we're getting there! Many thanks to the contributors and reviewers for their time and energy. Nearly every part of the DWARF 5 work has turned out to be more complicated than expected, but we're definitely making progress! --paulr