I've attached an example application that has version 3 DWARF line programs embedded in version 2 DWARF units. Converting this DWARF debug information (using the helpful simple_convert example) is unable to read/write this and fails with an IncompatibleLineProgramEncoding. It's unclear to me what the expected behavior should be during this conversion, other than likely preserving the original encoding. Commenting out the encoding check appears to work just fine.

dw_form.tar.gz

This is the same example used in #797.