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...ether a > .debug_str_offsets.dwo section (or a slice of it) is GCC-style or a > (single) v5 standard contribution. As you pointed out earlier, either > looking at the individual unit versions in the .debug_info.dwo section or > the individual forms used could do the trick. > > -- wolfgangp > > > Questions and brickbats welcome. > > --paulr > > > > P.S. Ah, you clever reader, who noticed I carefully said nothing about > > LTO of mixed-DWARF-version compilations! Haven't thought about it. This is still a question. However I think it's not th...

There was some discussion about this in D34765, and I had a follow-up chat with Wolfgang separately, plus spent a fair amount of time in reading and thinking today. I thought I would write my understanding all down here so we can reach a common understanding of how it ought to work, and therefore what our code should do. For any non-DWARF-experts who might be interested, in principle this