diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -56,6 +56,15 @@
   if (OwnedType)
     *OwnedType = DS.isTypeSpecOwned() ? DS.getRepAsDecl() : nullptr;
 
+  // Move declspec attributes to ParsedAttributes
+  llvm::SmallVector<ParsedAttr *, 1> ToBeMoved;
+  for (ParsedAttr &AL : DS.getAttributes())
+    if (AL.isDeclspecAttribute())
+      ToBeMoved.push_back(&AL);
+
+  for (ParsedAttr *AL : ToBeMoved)
+    Attrs->takeOneFrom(DS.getAttributes(), AL);
+
   // Parse the abstract-declarator, if present.
   Declarator DeclaratorInfo(DS, ParsedAttributesView::none(), Context);
   ParseDeclarator(DeclaratorInfo);
diff --git a/clang/test/SemaCXX/using-declspec.cpp b/clang/test/SemaCXX/using-declspec.cpp
new file mode 100644
--- /dev/null
+++ b/clang/test/SemaCXX/using-declspec.cpp
@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -fms-compatibility -fsyntax-only -verify %s
+// expected-no-diagnostics
+
+struct Test { int a; };
+using AlignedTest = __declspec(align(16)) const Test;
+static_assert(alignof(AlignedTest) == 16, "error");
\ No newline at end of file