https://issues.dlang.org/show_bug.cgi?id=21668
--- Comment #2 from Dlang Bot <[email protected]> --- @MoonlightSentinel created dlang/dmd pull request #12240 "Fix 14954 - extern opaque struct instance doesn't compile" fixing this issue: - Fix 21668 - Cannot declare ref parameter of opaque type Don't raise errors for VarDeclarations that are marked as ref https://github.com/dlang/dmd/pull/12240 --
