1 files changed, 3 insertions, 3 deletions
diff --git a/clang/utils/TableGen/ClangDiagnosticsEmitter.cpp b/clang/utils/TableGen/ClangDiagnosticsEmitter.cpp
index d6881ae3074..00769a45571 100644
--- a/clang/utils/TableGen/ClangDiagnosticsEmitter.cpp
+++ b/clang/utils/TableGen/ClangDiagnosticsEmitter.cpp
@@ -911,9 +911,9 @@ namespace {
 struct DiagText {
   struct Piece {
     // This type and its derived classes are move-only.
-    Piece() = default;
-    Piece(Piece &&O) = default;
-    Piece &operator=(Piece &&O) = default;
+    Piece() {}
+    Piece(Piece &&O) {}
+    Piece &operator=(Piece &&O) { return *this; }
 
     virtual void print(std::vector<std::string> &RST) = 0;
     virtual ~Piece() {}