https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78100
--- Comment #10 from Kevin Puetz <puetzk at puetzk dot org> --- The godbolt recipe also nails down the other end of the version range - 5.4 produced something weirder still (a single DW_TAG_variable with DW_AT_external=true, but also with DW_AT_location and DW_AT_upper_bound present - so it kind of mushed the two decls together with all the attributes of both). 6.1 starts emitting two separate DW_TAG_variable DIEs, one with DW_AT_external=true and the other with DW_AT_location, using DW_AT_specification to link them; but it lost the DW_AT_upper_bound. Then 10.1...trunk all seem fixed, emitting an incomplete `extern` and a complete definition, as it should. So "Known to fail" should be 6.1-9.5, "Known to Work" should be 10.0+ (and bug 91507 can also be marked "RESOLVED FIXED" since 10.1 is long since released). I'd update the metadata myself but don't the permission bits...
