Read/write CastExpr's CXXBaseSpecifierArray for PCH.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107542 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriterStmt.cpp b/lib/Frontend/PCHWriterStmt.cpp
index 12fcde8..91f9353 100644
--- a/lib/Frontend/PCHWriterStmt.cpp
+++ b/lib/Frontend/PCHWriterStmt.cpp
@@ -529,6 +529,11 @@
   VisitExpr(E);
   Writer.AddStmt(E->getSubExpr());
   Record.push_back(E->getCastKind()); // FIXME: stable encoding
+  CXXBaseSpecifierArray &BasePath = E->getBasePath();
+  Record.push_back(BasePath.size());
+  for (CXXBaseSpecifierArray::iterator I = BasePath.begin(), E = BasePath.end();
+       I != E; ++I)
+    Writer.AddCXXBaseSpecifier(**I, Record);
 }
 
 void PCHStmtWriter::VisitBinaryOperator(BinaryOperator *E) {