sammccall added inline comments.

================
Comment at: clang-tools-extra/clangd/SourceCode.cpp:601
+          llvm::inconvertibleErrorCode(),
+          "File contents differ on disk for %s, please save", FilePath.data());
+    }
----------------
kadircet wrote:
> sammccall wrote:
> > you seem to be checking this both here and in clangdlspserver. Why?
> the contents in here are coming from disk, whereas the one in clangdlspserver 
> is coming from drafts. I suppose it would make more sense to merge the two in 
> clangdlspserver, use draft manager as content source backed by disk in case 
> user hasn't opened that file.
OK, so you're checking here whether the contents-on-disk have changed between 
clang reading the file as part of parse, and the tweak completing?

I don't think this is worth doing. Sure, there's potentially a race condition, 
but it's relatively small (bounded on the order of a few seconds, vs unbounded 
for unsaved drafts) and we can't eliminate it entirely (file on disk can change 
between when we create edits and when they're applied).


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66637/new/

https://reviews.llvm.org/D66637



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