[PATCH] D138597: DebugInfo: Add/support new DW_LANG codes for recent C and C++ versions

Tue Nov 29 08:32:45 PST 2022

dblaikie added a comment.

In D138597#3954269 <https://reviews.llvm.org/D138597#3954269>, @probinson wrote:

> Hmmm I might be inclined to emit 17 and 20 only under not-strict-DWARF for v5, although it makes the logic more complicated.  The codes have been allocated but AFAICT the website doesn't have the new codes listed (I looked at http://wiki.dwarfstd.org/index.php/DWARF_Language_Support which doesn't even have all the v5 codes yet).

I think they're up here: https://dwarfstd.org/Languages.php (linked from the dwarfstd.org front page "DWARF V5 Language Codes and Requests")

> @aprantl do you have an opinion on this?  I tend to lean to the pedantic side on this kind of thing, but I'm persuadable.

Yeah, I've certainly got mixed feelings - maybe we don't pick up these after-release language codes, and instead produce the new language encoding (which separates language from version) as an extension, alongside the old/in-the-dwarfv5-spec-document codes? So that a DWARFv5 consumer that contains only the DWARFv5-spec-document functionality and not the new codes, and a newer consumer can read the new parts.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D138597/new/

https://reviews.llvm.org/D138597