[change-namespace] do not change type locs in defaulted functions.

[hokein]

LGTM

change-namespace/ChangeNamespace.cpp

void ChangeNamespaceTool::registerMatchers(ast_matchers::MatchFinder *Finder) {
   Finder->addMatcher(
       typeLoc(IsInMovedNs,
               loc(qualType(hasDeclaration(DeclMatcher.bind("from_decl")))),
               unless(anyOf(hasParent(typeLoc(loc(qualType(
                                allOf(hasDeclaration(DeclMatcher),
                                      unless(templateSpecializationType())))))),
                            hasParent(nestedNameSpecifierLoc()),
                            hasAncestor(isImplicit()),
-                           hasAncestor(UsingShadowDeclInClass))),
+                           hasAncestor(UsingShadowDeclInClass),
+                           hasAncestor(functionDecl(isDefaulted())))),
               hasAncestor(decl().bind("dc")))
           .bind("type"),
       this);
 
   // Types in `UsingShadowDecl` is not matched by `typeLoc` above, so we need to
   // special case it.
   // Since using declarations inside classes must have the base class in the
   // nested name specifier, we leave it to the nested name specifier matcher.
   Finder->addMatcher(usingDecl(IsInMovedNs, hasAnyUsingShadowDecl(decl()),
                                unless(UsingShadowDeclInClass))
                          .bind("using_with_shadow"),
                      this);
 
   // Handle types in nested name specifier. Specifiers that are in a TypeLoc
   // matched above are not matched, e.g. "A::" in "A::A" is not matched since
   // "A::A" would have already been fixed.
   Finder->addMatcher(
       nestedNameSpecifierLoc(
           hasAncestor(decl(IsInMovedNs).bind("dc")),
           loc(nestedNameSpecifier(
               specifiesType(hasDeclaration(DeclMatcher.bind("from_decl"))))),
           unless(anyOf(hasAncestor(isImplicit()),
                        hasAncestor(UsingShadowDeclInClass),
+                       hasAncestor(functionDecl(isDefaulted())),
                        hasAncestor(typeLoc(loc(qualType(hasDeclaration(
                            decl(equalsBoundNode("from_decl"))))))))))
           .bind("nested_specifier_loc"),
       this);
 
   // Matches base class initializers in constructors. TypeLocs of base class
   // initializers do not need to be fixed. For example,
   //    class X : public a::b::Y {

unittests/change-namespace/ChangeNamespaceTests.cpp

std::string Expected = "namespace na {\n"
                          "  Temp(x);\n"
                          "}\n"
                          "} // namespace y\n"
                          "} // namespace x\n";
 
   EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
 }
 
+TEST_F(ChangeNamespaceTest, DefaultMoveConstructors) {
+  std::string Code = "namespace na {\n"
+                     "class B {\n"
+                     " public:\n"
+                     "  B() = default;\n"
+                     "  // Allow move only.\n"
+                     "  B(B&&) = default;\n"
+                     "  B& operator=(B&&) = default;\n"
+                     "  B(const B&) = delete;\n"
+                     "  B& operator=(const B&) = delete;\n"
+                     " private:\n"
+                     "  int ref_;\n"
+                     "};\n"
+                     "} // namespace na\n"
+                     "namespace na {\n"
+                     "namespace nb {\n"
+                     "class A {\n"
+                     "public:\n"
+                     "  A() = default;\n"
+                     "  A(A&&) = default;\n"
+                     "  A& operator=(A&&) = default;\n"
+                     "private:\n"
+                     "  B b;\n"
+                     "  A(const A&) = delete;\n"
+                     "  A& operator=(const A&) = delete;\n"
+                     "};\n"
+                     "void f() { A a; a = A(); A aa = A(); }\n"
+                     "} // namespace nb\n"
+                     "} // namespace na\n";
+  std::string Expected = "namespace na {\n"
+                         "class B {\n"
+                         " public:\n"
+                         "  B() = default;\n"
+                         "  // Allow move only.\n"
+                         "  B(B&&) = default;\n"
+                         "  B& operator=(B&&) = default;\n"
+                         "  B(const B&) = delete;\n"
+                         "  B& operator=(const B&) = delete;\n"
+                         " private:\n"
+                         "  int ref_;\n"
+                         "};\n"
+                         "} // namespace na\n"
+                         "\n"
+                         "namespace x {\n"
+                         "namespace y {\n"
+                         "class A {\n"
+                         "public:\n"
+                         "  A() = default;\n"
+                         "  A(A&&) = default;\n"
+                         "  A& operator=(A&&) = default;\n"
+                         "private:\n"
+                         "  na::B b;\n"
+                         "  A(const A&) = delete;\n"
+                         "  A& operator=(const A&) = delete;\n"
+                         "};\n"
+                         "void f() { A a; a = A(); A aa = A(); }\n"
+                         "} // namespace y\n"
+                         "} // namespace x\n";
+  EXPECT_EQ(format(Expected), runChangeNamespaceOnCode(Code));
+}
+
+
 } // anonymous namespace
 } // namespace change_namespace
 } // namespace clang