(gdb) bt full
#0  0x0000000000000000 in ?? ()
No symbol table info available.
Die: DW_TAG_unspecified_type (abbrev = 112, offset = 2609757)
        has children: FALSE
        attributes:
                DW_AT_name (DW_FORM_strp) string: "decltype(nullptr)"
Dwarf Error: Cannot find type of die [in module /usr/local/lib/libdarktable.so]