Hi John,
After examining this, it looks like we get line info by compilation unit.
The info about the compilation units we get comes from an iteration using libdw
dwarf_nextcu, which in turn depends on ".debug_info".
It seems that the whole abstraction
of Module, DwarfWalker, Object, LineInformation and Symtab, relies on this way of getting line info.
This didn't change with the advent of libdw. The Dwarf_die was already being used this way.
I would need more time to have this abstraction more clear in order to plan on changing it, or making debug_line be used without debug_info.
Right now, I don't see a quick solution.
Sasha
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