Recommit virtual file system

Previously reverted in r201755 due to causing an assertion failure.

I've removed the offending assertion, and taught the CompilerInstance to
create a default virtual file system inside createFileManager. In the
future, we should be able to reach into the CompilerInvocation to
customize this behaviour without breaking clients that don't care.

llvm-svn: 201818

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/unittests/Basic/FileManagerTest.cpp b/clang/unittests/Basic/FileManagerTest.cpp
index f8ce50d531e..5b35e687350 100644
--- a/clang/unittests/Basic/FileManagerTest.cpp
+++ b/clang/unittests/Basic/FileManagerTest.cpp
@@ -48,7 +48,7 @@ public:
 
   // Implement FileSystemStatCache::getStat().
   virtual LookupResult getStat(const char *Path, FileData &Data, bool isFile,
-                               int *FileDescriptor) {
+                               vfs::File **F, vfs::FileSystem &FS) {
     if (StatCalls.count(Path) != 0) {
       Data = StatCalls[Path];
       return CacheExists;