4 files changed, 20 insertions, 0 deletions
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
index 7d950729304..4d68c0db177 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -1199,6 +1199,7 @@ void ASTDeclReader::ReadCXXDefinitionData(
   Data.DefaultedMoveAssignmentIsDeleted = Record[Idx++];
   Data.DefaultedDestructorIsDeleted = Record[Idx++];
   Data.HasTrivialSpecialMembers = Record[Idx++];
+  Data.DeclaredNonTrivialSpecialMembers = Record[Idx++];
   Data.HasIrrelevantDestructor = Record[Idx++];
   Data.HasConstexprNonCopyMoveConstructor = Record[Idx++];
   Data.DefaultedDefaultConstructorIsConstexpr = Record[Idx++];
diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index 96a254ae9a5..4e2c2e665b8 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -5248,6 +5248,7 @@ void ASTWriter::AddCXXDefinitionData(const CXXRecordDecl *D, RecordDataImpl &Rec
   Record.push_back(Data.DefaultedMoveAssignmentIsDeleted);
   Record.push_back(Data.DefaultedDestructorIsDeleted);
   Record.push_back(Data.HasTrivialSpecialMembers);
+  Record.push_back(Data.DeclaredNonTrivialSpecialMembers);
   Record.push_back(Data.HasIrrelevantDestructor);
   Record.push_back(Data.HasConstexprNonCopyMoveConstructor);
   Record.push_back(Data.DefaultedDefaultConstructorIsConstexpr);
diff --git a/clang/test/Modules/Inputs/cxx-decls-imported.h b/clang/test/Modules/Inputs/cxx-decls-imported.h
index b94368614df..959d3feaaf0 100644
--- a/clang/test/Modules/Inputs/cxx-decls-imported.h
+++ b/clang/test/Modules/Inputs/cxx-decls-imported.h
@@ -3,3 +3,18 @@ class HasFriends {
   friend void friend_2(HasFriends);
   void private_thing();
 };
+
+struct HasNontrivialDefaultConstructor {
+  HasNontrivialDefaultConstructor() = default;
+  HasNontrivialDefaultConstructor(int n = 0);
+
+  // Ensure this class is not POD but is still trivially-copyable.
+  // This is necessary to exercise the second static_assert below,
+  // because GCC's spec for __has_trivial_constructor is absurd.
+  int m;
+private:
+  int n;
+};
+
+static_assert(!__is_trivial(HasNontrivialDefaultConstructor), "");
+static_assert(!__has_trivial_constructor(HasNontrivialDefaultConstructor), "");
diff --git a/clang/test/Modules/cxx-decls.cpp b/clang/test/Modules/cxx-decls.cpp
index ba3281aaec7..d37594afb56 100644
--- a/clang/test/Modules/cxx-decls.cpp
+++ b/clang/test/Modules/cxx-decls.cpp
@@ -19,3 +19,6 @@ void test_friends(HasFriends s) {
   friend_1(s);
   friend_2(s);
 }
+
+static_assert(!__is_trivial(HasNontrivialDefaultConstructor), "");
+static_assert(!__has_trivial_constructor(HasNontrivialDefaultConstructor), "");