change the 'is directory' indicator to be a null-or-not

pointer that is passed down through the APIs, and make
FileSystemStatCache::get be the one that filters out
directory lookups that hit files.  This also paves the
way to have stat queries be able to return opened files.

llvm-svn: 120060

1 files changed, 3 insertions, 2 deletions

diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index dc719a1f938..4994b4944e2 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -1074,14 +1074,15 @@ public:
 
   ~ASTStatCache() { delete Cache; }
 
-  LookupResult getStat(const char *Path, struct stat &StatBuf) {
+  LookupResult getStat(const char *Path, struct stat &StatBuf,
+                       int *FileDescriptor) {
     // Do the lookup for the file's data in the AST file.
     CacheTy::iterator I = Cache->find(Path);
 
     // If we don't get a hit in the AST file just forward to 'stat'.
     if (I == Cache->end()) {
       ++NumStatMisses;
-      return statChained(Path, StatBuf);
+      return statChained(Path, StatBuf, FileDescriptor);
     }
 
     ++NumStatHits;