ioeric marked 5 inline comments as done.
ioeric added inline comments.

================
Comment at: clangd/Headers.cpp:60
     Argv.push_back(S.c_str());
   IgnoringDiagConsumer IgnoreDiags;
   auto CI = clang::createInvocationFromCommandLine(
----------------
ilya-biryukov wrote:
> Not related to this patch, but just noticed that we don't call 
> `FS->setCurrentWorkingDirectory(CompileCommand.Directory)` here.
> This might break if `CompileCommand` has non-absolute paths.
This was done in ClangdServer, but we should probably do it here as you 
suggested.


================
Comment at: clangd/index/FileIndex.cpp:36
+  CollectorOpts.IndexMainFiles = false;
+  CollectorOpts.CollectIncludePath = true;
+  const auto *Includes = CanonicalIncludesForSystemHeaders();
----------------
sammccall wrote:
> if this is always true now, we could remove the option?
Will do this in a followup patch. Added a FIXME


================
Comment at: clangd/index/FileIndex.cpp:37
+  CollectorOpts.CollectIncludePath = true;
+  const auto *Includes = CanonicalIncludesForSystemHeaders();
+  CollectorOpts.Includes = Includes;
----------------
sammccall wrote:
> This is not going to handle IWYU right?
> It seems like at this point the right thing to do is totally hide the 
> CanonicalIncludes inside SymbolCollector, which would init it (to system 
> headers), write IWYU mappings using the PP, and consume the mappings (when 
> emitting symbols).
> Churn :(
You are right :(

I'll prepare a followup patch to handle this. Added a FIXME.


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D43462



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