[PATCH] D53958: [Tooling] Produce diagnostics for missing input files.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added a reviewer: ioeric.
Herald added a subscriber: cfe-commits.

This was disabled way back in 2011, in the dark times before Driver was VFS-aware.

Also, make driver more VFS-aware :-)

This breaks one ClangTidy test (we improved the error message), will fix when
submitting.


Repository:
  rC Clang

https://reviews.llvm.org/D53958

Files:
  lib/Driver/Driver.cpp
  lib/Tooling/Tooling.cpp


Index: lib/Tooling/Tooling.cpp
===================================================================
--- lib/Tooling/Tooling.cpp
+++ lib/Tooling/Tooling.cpp
@@ -303,8 +303,6 @@
 
   const std::unique_ptr<driver::Driver> Driver(
       newDriver(&Diagnostics, BinaryName, Files->getVirtualFileSystem()));
-  // Since the input might only be virtual, don't check whether it exists.
-  Driver->setCheckInputsExist(false);
   const std::unique_ptr<driver::Compilation> Compilation(
       Driver->BuildCompilation(llvm::makeArrayRef(Argv)));
   if (!Compilation)
Index: lib/Driver/Driver.cpp
===================================================================
--- lib/Driver/Driver.cpp
+++ lib/Driver/Driver.cpp
@@ -1945,7 +1945,7 @@
     }
   }
 
-  if (llvm::sys::fs::exists(Twine(Path)))
+  if (D.getVFS().exists(Path))
     return true;
 
   if (D.IsCLMode()) {


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