From: Sam McCall <sam.mccall@gmail.com>
Date: Fri, 9 Nov 2018 11:49:22 +0000 (+0000)
Subject: [Tooling] Avoid diagnosing missing input files in an edge-case where it's incorrect.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=33834d33328b04607147a0352b67da76b85029bf;p=clang

[Tooling] Avoid diagnosing missing input files in an edge-case where it's incorrect.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@346485 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Tooling/Tooling.cpp b/lib/Tooling/Tooling.cpp
index f143f7fe71..cfdb32f0ae 100644
--- a/lib/Tooling/Tooling.cpp
+++ b/lib/Tooling/Tooling.cpp
@@ -303,6 +303,12 @@ bool ToolInvocation::run() {
 
   const std::unique_ptr<driver::Driver> Driver(
       newDriver(&Diagnostics, BinaryName, Files->getVirtualFileSystem()));
+  // The "input file not found" diagnostics from the driver are useful.
+  // The driver is only aware of the VFS working directory, but some clients
+  // change this at the FileManager level instead.
+  // In this case the checks have false positives, so skip them.
+  if (!Files->getFileSystemOpts().WorkingDir.empty())
+    Driver->setCheckInputsExist(false);
   const std::unique_ptr<driver::Compilation> Compilation(
       Driver->BuildCompilation(llvm::makeArrayRef(Argv)));
   if (!Compilation)