diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -9719,6 +9719,11 @@
 
   // Ill-formed if the copy and move constructors are deleted.
   auto HasNonDeletedCopyOrMoveConstructor = [&]() {
+    // If we know there exist users-defined move/copy ctors, don't try to infer
+    // the deletion of implicit ones becausee Sema may not have the info yet.
+    if (RD.hasUserDeclaredMoveConstructor() ||
+        RD.hasUserDeclaredCopyConstructor())
+      return true;
     if (RD.needsImplicitCopyConstructor() &&
         !RD.defaultedCopyConstructorIsDeleted())
       return true;