P0035R4: add std::align_val_t overloads of operator new/delete in C++17 mode.

llvm-svn: 282800
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index eb8c3d2..6c952e0 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -8266,6 +8266,10 @@
                                   StdBadAlloc.get(Context.getExternalSource()));
 }
 
+EnumDecl *Sema::getStdAlignValT() const {
+  return cast_or_null<EnumDecl>(StdAlignValT.get(Context.getExternalSource()));
+}
+
 NamespaceDecl *Sema::getStdNamespace() const {
   return cast_or_null<NamespaceDecl>(
                                  StdNamespace.get(Context.getExternalSource()));