> On Mar 11, 2019, at 12:45 PM, Zachary Turner via lldb-dev 
> <lldb-dev@lists.llvm.org> wrote:
> I want to ask what the status of DWARF64 in LLDB is.  I can tell there's some 
> support for it by reading the code, but it seems to have zero test coverage 
> so it's not clear to me that anyone depends on it.  For example, I know that 
> clang and LLVM will not even generate DWARF64, so if anyone is depending on 
> it, they must be debugging programs built with some other toolchain.

AFAIR, Apple's tools only generate/support DWARF32. After implementing 
type-uniquing in dsymutil we didn't see any individual .dSYM bundles that came 
even close to the 4GB watermark.

> I'm looking at unifying LLDB's DWARF parser with LLVM's, and this is the 
> biggest functional difference I can see.  
> Certainly we can improve LLVM's support for consuming DWARF64, but it's a 
> question of priorities.  If nobody is actively depending on this, then taking 
> a regression here could be on the table and then re-prioritizing adding back 
> support in the future if / when we actually need it.

-- adrian
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