1 files changed, 7 insertions, 0 deletions
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 2f3c006867..081e5ee6ad 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -966,6 +966,13 @@ void FunctionDecl::setBody(Stmt *B) {
     EndRangeLoc = B->getLocEnd();
 }
 
+void FunctionDecl::setPure(bool P) {
+  IsPure = P;
+  if (P)
+    if (CXXRecordDecl *Parent = dyn_cast<CXXRecordDecl>(getDeclContext()))
+      Parent->markedVirtualFunctionPure();
+}
+
 bool FunctionDecl::isMain() const {
   ASTContext &Context = getASTContext();
   return !Context.getLangOptions().Freestanding &&