Fixes a segfault in Tooling when using pch's:

Clear the FileManager's stat cache in between running
translation units, as the stat cache loaded from a pch
is only valid for one compiler invocation.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161047 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 0 deletions

diff --git a/lib/Basic/FileManager.cpp b/lib/Basic/FileManager.cpp
index b921f3e0d9..c6b894c7e2 100644
--- a/lib/Basic/FileManager.cpp
+++ b/lib/Basic/FileManager.cpp
@@ -223,6 +223,10 @@ void FileManager::removeStatCache(FileSystemStatCache *statCache) {
   PrevCache->setNextStatCache(statCache->getNextStatCache());
 }
 
+void FileManager::clearStatCaches() {
+  StatCache.reset(0);
+}
+
 /// \brief Retrieve the directory that the given file name resides in.
 /// Filename can point to either a real file or a virtual file.
 static const DirectoryEntry *getDirectoryFromFile(FileManager &FileMgr,
diff --git a/lib/Tooling/Tooling.cpp b/lib/Tooling/Tooling.cpp
index 5d41172a91..e93e0c97f7 100644
--- a/lib/Tooling/Tooling.cpp
+++ b/lib/Tooling/Tooling.cpp
@@ -212,6 +212,7 @@ bool ToolInvocation::runInvocation(
   const bool Success = Compiler.ExecuteAction(*ScopedToolAction);
 
   Compiler.resetAndLeakFileManager();
+  Files->clearStatCaches();
   return Success;
 }