Implement PCH support for offsetof(base-specifier).

llvm-svn: 109785
diff --git a/clang/lib/Frontend/PCHReaderStmt.cpp b/clang/lib/Frontend/PCHReaderStmt.cpp
index 86dfd879..6a11529 100644
--- a/clang/lib/Frontend/PCHReaderStmt.cpp
+++ b/clang/lib/Frontend/PCHReaderStmt.cpp
@@ -502,11 +502,13 @@
       E->setComponent(I, Node(Start, Reader.GetIdentifier(Record[Idx++]), End));
       break;
         
-    case Node::Base:
-      // FIXME: Implement this!
-      llvm_unreachable("PCH for offsetof(base-specifier) not implemented");
+    case Node::Base: {
+      CXXBaseSpecifier *Base = new (*Reader.getContext()) CXXBaseSpecifier();
+      *Base = Reader.ReadCXXBaseSpecifier(DeclsCursor, Record, Idx);
+      E->setComponent(I, Node(Base));
       break;
     }
+    }
   }
   
   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)