[PATCH v3 0/1] Don't rewind PC for GHC generated frames

[Bartosz Nitka]

Hi Yao,

Thanks for taking a look.
I agree that GHC should use DW_LNS_set_column and I will try to see
what I can do about that.
My understanding is that DW_TAG_ghc_src_note was introduced because we
don't get enough
fidelity with DW_LNS_set_column. I think it's because we have ranges
for expression locations, and
sometimes the start points overlap, but I'm a bit hazy on the details.
I want to try DW_LNS_set_column and see how far I get with that.

One thing I don't understand is why lldb seems to understand
DW_TAG_ghc_src_note. I need to investigate a bit more.

Thanks,
Bartosz