[Bug debug/51902] lexical_blocks inside inlined_subroutines generate duplicate debug_ranges

[mark at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51902

--- Comment #3 from Mark Wielaard <mark at gcc dot gnu.org> 2012-01-20 13:31:04 UTC ---
(In reply to comment #2)
> Mark, can you please look at this if it does the right thing you want from it?

Yes, this seems to do what I was thinking of. And it works on my testcases.

It does a bit more by searching up the block supercontext and by trying to find
a partial range. I think it would be fine to look for and pick the first block
supercontext and only check the chains are equal (but haven't tried that yet).