diff --git a/clang-tools-extra/clangd/unittests/FindTargetTests.cpp b/clang-tools-extra/clangd/unittests/FindTargetTests.cpp
--- a/clang-tools-extra/clangd/unittests/FindTargetTests.cpp
+++ b/clang-tools-extra/clangd/unittests/FindTargetTests.cpp
@@ -1640,7 +1640,7 @@
               int (*$2^fptr)(int $3^a, int) = nullptr;
              }
            )cpp",
-           "0: targets = {}\n"
+           "0: targets = {(unnamed)}\n"
            "1: targets = {x}, decl\n"
            "2: targets = {fptr}, decl\n"
            "3: targets = {a}, decl\n"},
diff --git a/clang/include/clang/AST/Decl.h b/clang/include/clang/AST/Decl.h
--- a/clang/include/clang/AST/Decl.h
+++ b/clang/include/clang/AST/Decl.h
@@ -291,7 +291,9 @@
 
   /// Pretty-print the unqualified name of this declaration. Can be overloaded
   /// by derived classes to provide a more user-friendly name when appropriate.
-  virtual void printName(raw_ostream &os) const;
+  virtual void printName(raw_ostream &OS, const PrintingPolicy &Policy) const;
+  /// Calls printName() with the ASTContext printing policy from the decl.
+  void printName(raw_ostream &OS) const;
 
   /// Get the actual, stored name of the declaration, which may be a special
   /// name.
@@ -3654,6 +3656,8 @@
     return getExtInfo()->TemplParamLists[i];
   }
 
+  void printName(raw_ostream &OS, const PrintingPolicy &Policy) const override;
+
   void setTemplateParameterListsInfo(ASTContext &Context,
                                      ArrayRef<TemplateParameterList *> TPLists);
 
diff --git a/clang/include/clang/AST/DeclCXX.h b/clang/include/clang/AST/DeclCXX.h
--- a/clang/include/clang/AST/DeclCXX.h
+++ b/clang/include/clang/AST/DeclCXX.h
@@ -4100,7 +4100,7 @@
     return llvm::makeArrayRef(getTrailingObjects<BindingDecl *>(), NumBindings);
   }
 
-  void printName(raw_ostream &os) const override;
+  void printName(raw_ostream &OS, const PrintingPolicy &Policy) const override;
 
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K == Decomposition; }
@@ -4213,7 +4213,8 @@
 
 public:
   /// Print this UUID in a human-readable format.
-  void printName(llvm::raw_ostream &OS) const override;
+  void printName(llvm::raw_ostream &OS,
+                 const PrintingPolicy &Policy) const override;
 
   /// Get the decomposed parts of this declaration.
   Parts getParts() const { return PartVal; }
@@ -4266,7 +4267,8 @@
 
 public:
   /// Print this in a human-readable format.
-  void printName(llvm::raw_ostream &OS) const override;
+  void printName(llvm::raw_ostream &OS,
+                 const PrintingPolicy &Policy) const override;
 
   const APValue &getValue() const { return Value; }
 
diff --git a/clang/include/clang/AST/DeclTemplate.h b/clang/include/clang/AST/DeclTemplate.h
--- a/clang/include/clang/AST/DeclTemplate.h
+++ b/clang/include/clang/AST/DeclTemplate.h
@@ -3343,7 +3343,8 @@
 
 public:
   /// Print this template parameter object in a human-readable format.
-  void printName(llvm::raw_ostream &OS) const override;
+  void printName(llvm::raw_ostream &OS,
+                 const PrintingPolicy &Policy) const override;
 
   /// Print this object as an equivalent expression.
   void printAsExpr(llvm::raw_ostream &OS) const;
diff --git a/clang/lib/AST/ASTDiagnostic.cpp b/clang/lib/AST/ASTDiagnostic.cpp
--- a/clang/lib/AST/ASTDiagnostic.cpp
+++ b/clang/lib/AST/ASTDiagnostic.cpp
@@ -1893,7 +1893,7 @@
         TPO->printAsInit(OS, Policy);
         return;
       }
-      VD->printName(OS);
+      VD->printName(OS, Policy);
       return;
     }
 
diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1602,8 +1602,12 @@
   llvm_unreachable("unknown module kind");
 }
 
-void NamedDecl::printName(raw_ostream &os) const {
-  os << Name;
+void NamedDecl::printName(raw_ostream &OS, const PrintingPolicy&) const {
+  OS << Name;
+}
+
+void NamedDecl::printName(raw_ostream &OS) const {
+  printName(OS, getASTContext().getPrintingPolicy());
 }
 
 std::string NamedDecl::getQualifiedNameAsString() const {
@@ -1621,7 +1625,7 @@
                                    const PrintingPolicy &P) const {
   if (getDeclContext()->isFunctionOrMethod()) {
     // We do not print '(anonymous)' for function parameters without name.
-    printName(OS);
+    printName(OS, P);
     return;
   }
   printNestedNameSpecifier(OS, P);
@@ -1632,7 +1636,7 @@
     // fall back to "(anonymous)".
     SmallString<64> NameBuffer;
     llvm::raw_svector_ostream NameOS(NameBuffer);
-    printName(NameOS);
+    printName(NameOS, P);
     if (NameBuffer.empty())
       OS << "(anonymous)";
     else
@@ -1755,7 +1759,7 @@
   if (Qualified)
     printQualifiedName(OS, Policy);
   else
-    printName(OS);
+    printName(OS, Policy);
 }
 
 template<typename T> static bool isRedeclarableImpl(Redeclarable<T> *) {
@@ -4470,6 +4474,23 @@
   }
 }
 
+void TagDecl::printName(raw_ostream &OS, const PrintingPolicy &Policy) const {
+  DeclarationName Name = getDeclName();
+  // If the name is supposed to have an identifier but does not have one, then
+  // the tag is anonymous and we should print it differently.
+  if (Name.isIdentifier() && !Name.getAsIdentifierInfo()) {
+    // If the caller wanted to print a qualified name, they've already printed
+    // the scope. And if the caller doesn't want that, the scope information
+    // is already printed as part of the type.
+    PrintingPolicy Copy(Policy);
+    Copy.SuppressScope = true;
+    getASTContext().getTagDeclType(this).print(OS, Copy);
+    return;
+  }
+  // Otherwise, do the normal printing.
+  Name.print(OS, Policy);
+}
+
 void TagDecl::setTemplateParameterListsInfo(
     ASTContext &Context, ArrayRef<TemplateParameterList *> TPLists) {
   assert(!TPLists.empty());
diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -3269,16 +3269,17 @@
   return Result;
 }
 
-void DecompositionDecl::printName(llvm::raw_ostream &os) const {
-  os << '[';
+void DecompositionDecl::printName(llvm::raw_ostream &OS,
+                                  const PrintingPolicy &Policy) const {
+  OS << '[';
   bool Comma = false;
   for (const auto *B : bindings()) {
     if (Comma)
-      os << ", ";
-    B->printName(os);
+      OS << ", ";
+    B->printName(OS, Policy);
     Comma = true;
   }
-  os << ']';
+  OS << ']';
 }
 
 void MSPropertyDecl::anchor() {}
@@ -3314,7 +3315,8 @@
   return new (C, ID) MSGuidDecl(nullptr, QualType(), Parts());
 }
 
-void MSGuidDecl::printName(llvm::raw_ostream &OS) const {
+void MSGuidDecl::printName(llvm::raw_ostream &OS,
+                           const PrintingPolicy &) const {
   OS << llvm::format("GUID{%08" PRIx32 "-%04" PRIx16 "-%04" PRIx16 "-",
                      PartVal.Part1, PartVal.Part2, PartVal.Part3);
   unsigned I = 0;
@@ -3423,7 +3425,8 @@
       UnnamedGlobalConstantDecl(C, nullptr, QualType(), APValue());
 }
 
-void UnnamedGlobalConstantDecl::printName(llvm::raw_ostream &OS) const {
+void UnnamedGlobalConstantDecl::printName(llvm::raw_ostream &OS,
+                                          const PrintingPolicy &) const {
   OS << "unnamed-global-constant";
 }
 
diff --git a/clang/lib/AST/DeclPrinter.cpp b/clang/lib/AST/DeclPrinter.cpp
--- a/clang/lib/AST/DeclPrinter.cpp
+++ b/clang/lib/AST/DeclPrinter.cpp
@@ -1711,7 +1711,7 @@
       Out << OpName;
     } else {
       assert(D->getDeclName().isIdentifier());
-      D->printName(Out);
+      D->printName(Out, Policy);
     }
     Out << " : ";
     D->getType().print(Out, Policy);
@@ -1741,7 +1741,7 @@
 void DeclPrinter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
   if (!D->isInvalidDecl()) {
     Out << "#pragma omp declare mapper (";
-    D->printName(Out);
+    D->printName(Out, Policy);
     Out << " : ";
     D->getType().print(Out, Policy);
     Out << " ";
diff --git a/clang/lib/AST/DeclTemplate.cpp b/clang/lib/AST/DeclTemplate.cpp
--- a/clang/lib/AST/DeclTemplate.cpp
+++ b/clang/lib/AST/DeclTemplate.cpp
@@ -1532,9 +1532,10 @@
   return TPOD;
 }
 
-void TemplateParamObjectDecl::printName(llvm::raw_ostream &OS) const {
+void TemplateParamObjectDecl::printName(llvm::raw_ostream &OS,
+                                        const PrintingPolicy &Policy) const {
   OS << "<template param ";
-  printAsExpr(OS);
+  printAsExpr(OS, Policy);
   OS << ">";
 }
 
diff --git a/clang/lib/AST/NestedNameSpecifier.cpp b/clang/lib/AST/NestedNameSpecifier.cpp
--- a/clang/lib/AST/NestedNameSpecifier.cpp
+++ b/clang/lib/AST/NestedNameSpecifier.cpp
@@ -287,7 +287,7 @@
             dyn_cast_or_null<ClassTemplateSpecializationDecl>(getAsRecordDecl());
     if (ResolveTemplateArguments && Record) {
         // Print the type trait with resolved template parameters.
-        Record->printName(OS);
+        Record->printName(OS, Policy);
         printTemplateArgumentList(
             OS, Record->getTemplateArgs().asArray(), Policy,
             Record->getSpecializedTemplate()->getTemplateParameters());
diff --git a/clang/lib/AST/TemplateName.cpp b/clang/lib/AST/TemplateName.cpp
--- a/clang/lib/AST/TemplateName.cpp
+++ b/clang/lib/AST/TemplateName.cpp
@@ -304,7 +304,7 @@
   } else {
     assert(getKind() == TemplateName::OverloadedTemplate);
     OverloadedTemplateStorage *OTS = getAsOverloadedTemplate();
-    (*OTS->begin())->printName(OS);
+    (*OTS->begin())->printName(OS, Policy);
   }
 }
 
diff --git a/clang/lib/CodeGen/CodeGenTypes.cpp b/clang/lib/CodeGen/CodeGenTypes.cpp
--- a/clang/lib/CodeGen/CodeGenTypes.cpp
+++ b/clang/lib/CodeGen/CodeGenTypes.cpp
@@ -67,7 +67,7 @@
     if (RD->getDeclContext())
       RD->printQualifiedName(OS, Policy);
     else
-      RD->printName(OS);
+      RD->printName(OS, Policy);
   } else if (const TypedefNameDecl *TDD = RD->getTypedefNameForAnonDecl()) {
     // FIXME: We should not have to check for a null decl context here.
     // Right now we do it because the implicit Obj-C decls don't have one.
diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp
--- a/clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -718,7 +718,7 @@
       TemplateDecl *Template = cast<TemplateDecl>(Active->Template);
       SmallString<128> TemplateArgsStr;
       llvm::raw_svector_ostream OS(TemplateArgsStr);
-      Template->printName(OS);
+      Template->printName(OS, getPrintingPolicy());
       printTemplateArgumentList(OS, Active->template_arguments(),
                                 getPrintingPolicy());
       Diags.Report(Active->PointOfInstantiation,
@@ -784,7 +784,7 @@
 
       SmallString<128> TemplateArgsStr;
       llvm::raw_svector_ostream OS(TemplateArgsStr);
-      FD->printName(OS);
+      FD->printName(OS, getPrintingPolicy());
       printTemplateArgumentList(OS, Active->template_arguments(),
                                 getPrintingPolicy());
       Diags.Report(Active->PointOfInstantiation,
@@ -949,7 +949,7 @@
       }
       SmallString<128> TemplateArgsStr;
       llvm::raw_svector_ostream OS(TemplateArgsStr);
-      cast<NamedDecl>(Active->Entity)->printName(OS);
+      cast<NamedDecl>(Active->Entity)->printName(OS, getPrintingPolicy());
       if (!isa<FunctionDecl>(Active->Entity)) {
         printTemplateArgumentList(OS, Active->template_arguments(),
                                   getPrintingPolicy());
diff --git a/clang/test/AST/ast-dump-record-definition-data-json.cpp b/clang/test/AST/ast-dump-record-definition-data-json.cpp
--- a/clang/test/AST/ast-dump-record-definition-data-json.cpp
+++ b/clang/test/AST/ast-dump-record-definition-data-json.cpp
@@ -323,7 +323,7 @@
 // CHECK-NEXT:    },
 // CHECK-NEXT:    "isImplicit": true,
 // CHECK-NEXT:    "isReferenced": true,
-// CHECK-NEXT:    "name": "~",
+// CHECK-NEXT:    "name": "~(lambda at {{.*}})",
 // CHECK-NEXT:    "mangledName": "_ZZ1fvEN3$_0D1Ev",
 // CHECK-NEXT:    "type": {
 // CHECK-NEXT:     "qualType": "void () noexcept"
@@ -708,7 +708,7 @@
 // CHECK-NEXT:    },
 // CHECK-NEXT:    "isImplicit": true,
 // CHECK-NEXT:    "isReferenced": true,
-// CHECK-NEXT:    "name": "~",
+// CHECK-NEXT:    "name": "~(lambda at {{.*}})",
 // CHECK-NEXT:    "mangledName": "_ZZ1fvEN3$_1D1Ev",
 // CHECK-NEXT:    "type": {
 // CHECK-NEXT:     "qualType": "void () noexcept"
diff --git a/clang/test/ExtractAPI/enum.c b/clang/test/ExtractAPI/enum.c
--- a/clang/test/ExtractAPI/enum.c
+++ b/clang/test/ExtractAPI/enum.c
@@ -694,13 +694,13 @@
         "navigator": [
           {
             "kind": "identifier",
-            "spelling": "(anonymous)"
+            "spelling": "enum (unnamed)"
           }
         ],
-        "title": "(anonymous)"
+        "title": "enum (unnamed)"
       },
       "pathComponents": [
-        "(anonymous)"
+        "enum (unnamed)"
       ]
     },
     {
@@ -742,7 +742,7 @@
         "title": "Constant"
       },
       "pathComponents": [
-        "(anonymous)",
+        "enum (unnamed)",
         "Constant"
       ]
     },
@@ -782,13 +782,13 @@
         "navigator": [
           {
             "kind": "identifier",
-            "spelling": "(anonymous)"
+            "spelling": "enum (unnamed)"
           }
         ],
-        "title": "(anonymous)"
+        "title": "enum (unnamed)"
       },
       "pathComponents": [
-        "(anonymous)"
+        "enum (unnamed)"
       ]
     },
     {
@@ -830,7 +830,7 @@
         "title": "OtherConstant"
       },
       "pathComponents": [
-        "(anonymous)",
+        "enum (unnamed)",
         "OtherConstant"
       ]
     }
diff --git a/clang/test/Index/annotate-comments-typedef.m b/clang/test/Index/annotate-comments-typedef.m
--- a/clang/test/Index/annotate-comments-typedef.m
+++ b/clang/test/Index/annotate-comments-typedef.m
@@ -36,7 +36,7 @@
          int iii;
         } Foo;
 // CHECK: TypedefDecl=Foo:[[@LINE-1]]:11 (Definition) {{.*}} FullCommentAsHTML=[<p class="para-brief"> Comment about Foo </p>] FullCommentAsXML=[<Typedef file="{{[^"]+}}annotate-comments-typedef.m" line="[[@LINE-1]]" column="11"><Name>Foo</Name><USR>c:@T@Foo</USR><Declaration>typedef struct Foo Foo</Declaration><Abstract><Para> Comment about Foo </Para></Abstract></Typedef>]
-// CHECK: StructDecl=:[[@LINE-4]]:9 (Definition) {{.*}} BriefComment=[Comment about Foo] FullCommentAsHTML=[<p class="para-brief"> Comment about Foo </p>] FullCommentAsXML=[<Class file="{{[^"]+}}annotate-comments-typedef.m" line="[[@LINE-4]]" column="9"><Name>&lt;anonymous&gt;</Name><USR>c:@SA@Foo</USR><Declaration>struct {}</Declaration><Abstract><Para> Comment about Foo </Para></Abstract></Class>]
+// CHECK: StructDecl=Foo:[[@LINE-4]]:9 (Definition) {{.*}} BriefComment=[Comment about Foo] FullCommentAsHTML=[<p class="para-brief"> Comment about Foo </p>] FullCommentAsXML=[<Class file="{{[^"]+}}annotate-comments-typedef.m" line="[[@LINE-4]]" column="9"><Name>&lt;anonymous&gt;</Name><USR>c:@SA@Foo</USR><Declaration>struct {}</Declaration><Abstract><Para> Comment about Foo </Para></Abstract></Class>]
 
 
 struct Foo1 {
diff --git a/clang/test/Index/c-index-api-loadTU-test.m b/clang/test/Index/c-index-api-loadTU-test.m
--- a/clang/test/Index/c-index-api-loadTU-test.m
+++ b/clang/test/Index/c-index-api-loadTU-test.m
@@ -105,7 +105,7 @@
 // CHECK: c-index-api-loadTU-test.m:35:9: ObjCIvarDecl=_anIVar:35:9 (Definition) Extent=[35:5 - 35:16]
 // CHECK: c-index-api-loadTU-test.m:38:11: ObjCInstanceMethodDecl=bazMethod:38:11 Extent=[38:1 - 38:21]
 // CHECK: c-index-api-loadTU-test.m:38:4: ObjCClassRef=Foo:4:12 Extent=[38:4 - 38:7]
-// CHECK: c-index-api-loadTU-test.m:42:1: EnumDecl=:42:1 (Definition) Extent=[42:1 - 44:2]
+// CHECK: c-index-api-loadTU-test.m:42:1: EnumDecl=enum (unnamed at {{.*}}):42:1 (Definition) Extent=[42:1 - 44:2]
 // CHECK: c-index-api-loadTU-test.m:43:3: EnumConstantDecl=someEnum:43:3 (Definition) Extent=[43:3 - 43:11]
 // CHECK: c-index-api-loadTU-test.m:46:5: FunctionDecl=main:46:5 (Definition) Extent=[46:1 - 55:2]
 // CHECK: c-index-api-loadTU-test.m:46:15: ParmDecl=argc:46:15 (Definition) Extent=[46:11 - 46:19]
diff --git a/clang/test/Index/c-index-getCursor-test.m b/clang/test/Index/c-index-getCursor-test.m
--- a/clang/test/Index/c-index-getCursor-test.m
+++ b/clang/test/Index/c-index-getCursor-test.m
@@ -102,9 +102,9 @@
 // CHECK: [36:7 - 36:21] ObjCInstanceMethodDecl=bazMethod:36:1
 // CHECK: [36:21 - 38:5] ObjCInterfaceDecl=Baz:31:12
 // CHECK: [38:5 - 40:1] Invalid Cursor => NoDeclFound
-// CHECK: [40:1 - 41:3] EnumDecl=:40:1 (Definition)
+// CHECK: [40:1 - 41:3] EnumDecl=enum (unnamed at {{.*}}):40:1 (Definition)
 // CHECK: [41:3 - 41:11] EnumConstantDecl=someEnum:41:3 (Definition)
-// CHECK: [41:11 - 42:2] EnumDecl=:40:1 (Definition)
+// CHECK: [41:11 - 42:2] EnumDecl=enum (unnamed at {{.*}}):40:1 (Definition)
 // CHECK: [42:2 - 44:1] Invalid Cursor => NoDeclFound
 // CHECK: [44:1 - 44:11] FunctionDecl=main:44:5 (Definition)
 // CHECK: [44:11 - 44:19] ParmDecl=argc:44:15 (Definition)
diff --git a/clang/test/Index/print-type.c b/clang/test/Index/print-type.c
--- a/clang/test/Index/print-type.c
+++ b/clang/test/Index/print-type.c
@@ -69,10 +69,10 @@
 // CHECK: StructDecl=Struct:16:8 (Definition) [type=struct Struct] [typekind=Record] [isPOD=1]
 // CHECK: FunctionDecl=elaboratedStructType:16:32 [type=struct Struct ()] [typekind=FunctionNoProto] [canonicaltype=struct Struct ()] [canonicaltypekind=FunctionNoProto] [resulttype=struct Struct] [resulttypekind=Elaborated] [isPOD=0]
 // CHECK: TypeRef=struct Struct:16:8 [type=struct Struct] [typekind=Record] [isPOD=1]
-// CHECK: StructDecl=:18:1 (Definition) [type=struct (unnamed at {{.*}}print-type.c:18:1)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1] [isAnonRecDecl=0]
-// CHECK: StructDecl=:23:1 (Definition) [type=struct (unnamed at {{.*}}print-type.c:23:1)] [typekind=Record] [isPOD=1] [nbFields=1] [isAnon=1] [isAnonRecDecl=0]
-// CHECK: StructDecl=:24:3 (Definition) [type=struct (anonymous at {{.*}}print-type.c:24:3)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1] [isAnonRecDecl=1]
+// CHECK: StructDecl=struct (unnamed at {{.*}}):18:1 (Definition) [type=struct (unnamed at {{.*}}print-type.c:18:1)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1] [isAnonRecDecl=0]
+// CHECK: StructDecl=struct (unnamed at {{.*}}):23:1 (Definition) [type=struct (unnamed at {{.*}}print-type.c:23:1)] [typekind=Record] [isPOD=1] [nbFields=1] [isAnon=1] [isAnonRecDecl=0]
+// CHECK: StructDecl=struct (anonymous at {{.*}}):24:3 (Definition) [type=struct (anonymous at {{.*}}print-type.c:24:3)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1] [isAnonRecDecl=1]
 // CHECK: FieldDecl=x:25:17 (Definition) [type=_Atomic(int)] [typekind=Atomic] [valuetype=int] [valuetypekind=Int] [isPOD=0] [isAnonRecDecl=0]
 // CHECK: FieldDecl=y:26:9 (Definition) [type=int] [typekind=Int] [isPOD=1] [isAnonRecDecl=0]
-// CHECK: StructDecl=:30:10 (Definition) [type=struct (unnamed at {{.*}}print-type.c:30:10)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1] [isAnonRecDecl=0]
+// CHECK: StructDecl=struct (unnamed at {{.*}}):30:10 (Definition) [type=struct (unnamed at {{.*}}print-type.c:30:10)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1] [isAnonRecDecl=0]
 // CHECK: VarDecl=aul:32:24 [type=_Atomic(unsigned long)] [typekind=Atomic] [valuetype=unsigned long] [valuetypekind=ULong] [isPOD=0] [isAnonRecDecl=0]
diff --git a/clang/test/Index/print-type.cpp b/clang/test/Index/print-type.cpp
--- a/clang/test/Index/print-type.cpp
+++ b/clang/test/Index/print-type.cpp
@@ -201,9 +201,9 @@
 // CHECK: TypeAliasDecl=baz:76:7 (Definition) [type=baz] [typekind=Typedef] [templateargs/1= [type=A<void>] [typekind=Elaborated]] [canonicaltype=A<void>] [canonicaltypekind=Record] [canonicaltemplateargs/1= [type=void] [typekind=Void]] [isPOD=0]
 // CHECK: VarDecl=autoTemplPointer:78:6 (Definition) [type=Specialization<Specialization<bool> &> *] [typekind=Auto] [canonicaltype=Specialization<Specialization<bool> &> *] [canonicaltypekind=Pointer] [isPOD=1] [pointeetype=Specialization<Specialization<bool> &>] [pointeekind=Auto]
 // CHECK: CallExpr=Bar:17:3 [type=outer::inner::Bar] [typekind=Elaborated] [canonicaltype=outer::inner::Bar] [canonicaltypekind=Record] [args= [outer::Foo<bool> *] [Pointer]] [isPOD=0] [nbFields=3]
-// CHECK: StructDecl=:84:3 (Definition) [type=X::(anonymous struct at {{.*}}print-type.cpp:84:3)] [typekind=Record] [isPOD=1] [nbFields=1] [isAnon=1]
-// CHECK: ClassDecl=:85:3 (Definition) [type=X::(anonymous class at {{.*}}print-type.cpp:85:3)] [typekind=Record] [isPOD=1] [nbFields=1] [isAnon=1]
-// CHECK: UnionDecl=:86:3 (Definition) [type=X::(anonymous union at {{.*}}print-type.cpp:86:3)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1]
-// CHECK: EnumDecl=:87:3 (Definition) [type=X::(unnamed enum at {{.*}}print-type.cpp:87:3)] [typekind=Enum] [isPOD=1] [isAnon=1]
+// CHECK: StructDecl=(anonymous struct at {{.*}}):84:3 (Definition) [type=X::(anonymous struct at {{.*}}print-type.cpp:84:3)] [typekind=Record] [isPOD=1] [nbFields=1] [isAnon=1]
+// CHECK: ClassDecl=(anonymous class at {{.*}}:85:3 (Definition) [type=X::(anonymous class at {{.*}}print-type.cpp:85:3)] [typekind=Record] [isPOD=1] [nbFields=1] [isAnon=1]
+// CHECK: UnionDecl=(anonymous union at {{.*}}:86:3 (Definition) [type=X::(anonymous union at {{.*}}print-type.cpp:86:3)] [typekind=Record] [isPOD=1] [nbFields=2] [isAnon=1]
+// CHECK: EnumDecl=(unnamed enum at {{.*}}:87:3 (Definition) [type=X::(unnamed enum at {{.*}}print-type.cpp:87:3)] [typekind=Enum] [isPOD=1] [isAnon=1]
 // CHECK: Namespace=:90:11 (Definition) [type=] [typekind=Invalid] [isPOD=0] [isAnon=1]
 // CHECK: Namespace=InlineNS:94:18 (Definition) [type=] [typekind=Invalid] [isPOD=0] [isAnonRecDecl=0] [isInlineNamespace=1]
diff --git a/clang/test/Index/targeted-annotation.c b/clang/test/Index/targeted-annotation.c
--- a/clang/test/Index/targeted-annotation.c
+++ b/clang/test/Index/targeted-annotation.c
@@ -45,10 +45,10 @@
 
 // FIELD: Keyword: "int" [2:3 - 2:6] FieldDecl=z:2:7 (Definition)
 // FIELD: Identifier: "z" [2:7 - 2:8] FieldDecl=z:2:7 (Definition)
-// FIELD: Punctuation: ";" [2:8 - 2:9] StructDecl=:13:9 (Definition)
+// FIELD: Punctuation: ";" [2:8 - 2:9] StructDecl=Vector:13:9 (Definition)
 // FIELD: Keyword: "int" [3:3 - 3:6] FieldDecl=w:3:7 (Definition)
 // FIELD: Identifier: "w" [3:7 - 3:8] FieldDecl=w:3:7 (Definition)
-// FIELD: Punctuation: ";" [3:8 - 3:9] StructDecl=:13:9 (Definition)
+// FIELD: Punctuation: ";" [3:8 - 3:9] StructDecl=Vector:13:9 (Definition)
 
 // RUN: env CINDEXTEST_FAILONERROR=1 c-index-test -test-annotate-tokens=%S/targeted-nested1.h:1:1:3:1 %s -include %t.h \
 // RUN:    -Xclang -error-on-deserialized-decl=TopVar  \
@@ -86,12 +86,12 @@
 // TOP: Punctuation: "#" [5:1 - 5:2] inclusion directive=targeted-nested1.h
 // TOP: Identifier: "include" [5:2 - 5:9] inclusion directive=targeted-nested1.h
 // TOP: Literal: ""targeted-nested1.h"" [5:10 - 5:30] inclusion directive=targeted-nested1.h
-// TOP: Keyword: "enum" [7:1 - 7:5] EnumDecl=:7:1 (Definition)
-// TOP: Punctuation: "{" [7:6 - 7:7] EnumDecl=:7:1 (Definition)
+// TOP: Keyword: "enum" [7:1 - 7:5] EnumDecl=enum (unnamed at {{.*}}):7:1 (Definition)
+// TOP: Punctuation: "{" [7:6 - 7:7] EnumDecl=enum (unnamed at {{.*}}):7:1 (Definition)
 // TOP: Identifier: "VALUE" [8:3 - 8:8] EnumConstantDecl=VALUE:8:3 (Definition)
 // TOP: Punctuation: "=" [8:9 - 8:10] EnumConstantDecl=VALUE:8:3 (Definition)
 // TOP: Literal: "3" [8:11 - 8:12] IntegerLiteral=
-// TOP: Punctuation: "}" [9:1 - 9:2] EnumDecl=:7:1 (Definition)
+// TOP: Punctuation: "}" [9:1 - 9:2] EnumDecl=enum (unnamed at {{.*}}):7:1 (Definition)
 // TOP: Punctuation: ";" [9:2 - 9:3]
 // TOP: Keyword: "extern" [11:1 - 11:7]
 // TOP: Keyword: "int" [11:8 - 11:11] VarDecl=TopVar:11:12
diff --git a/clang/test/Index/targeted-cursor.c b/clang/test/Index/targeted-cursor.c
--- a/clang/test/Index/targeted-cursor.c
+++ b/clang/test/Index/targeted-cursor.c
@@ -62,4 +62,4 @@
 // PREAMBLE-CURSOR1: VarDecl=PreambleVar:2:12
 
 // FIELD-CURSOR1: FieldDecl=z:2:7 (Definition)
-// FIELD-CURSOR2: StructDecl=:13:9 (Definition)
+// FIELD-CURSOR2: StructDecl=Vector:13:9 (Definition)
diff --git a/clang/test/Index/usrs.m b/clang/test/Index/usrs.m
--- a/clang/test/Index/usrs.m
+++ b/clang/test/Index/usrs.m
@@ -185,14 +185,14 @@
 // CHECK-source: usrs.m:3:52: BinaryOperator= Extent=[3:52 - 3:57]
 // CHECK-source: usrs.m:3:52: DeclRefExpr=x:3:33 Extent=[3:52 - 3:53]
 // CHECK-source: usrs.m:3:56: DeclRefExpr=y:3:40 Extent=[3:56 - 3:57]
-// CHECK-source: usrs.m:5:1: EnumDecl=:5:1 (Definition) Extent=[5:1 - 8:2]
+// CHECK-source: usrs.m:5:1: EnumDecl=enum (unnamed at {{.*}}):5:1 (Definition) Extent=[5:1 - 8:2]
 // CHECK-source: usrs.m:6:3: EnumConstantDecl=ABA:6:3 (Definition) Extent=[6:3 - 6:6]
 // CHECK-source: usrs.m:7:3: EnumConstantDecl=CADABA:7:3 (Definition) Extent=[7:3 - 7:9]
-// CHECK-source: usrs.m:10:1: EnumDecl=:10:1 (Definition) Extent=[10:1 - 13:2]
+// CHECK-source: usrs.m:10:1: EnumDecl=enum (unnamed at {{.*}}):10:1 (Definition) Extent=[10:1 - 13:2]
 // CHECK-source: usrs.m:11:3: EnumConstantDecl=FOO:11:3 (Definition) Extent=[11:3 - 11:6]
 // CHECK-source: usrs.m:12:3: EnumConstantDecl=BAR:12:3 (Definition) Extent=[12:3 - 12:6]
 // CHECK-source: usrs.m:18:3: TypedefDecl=MyStruct:18:3 (Definition) Extent=[15:1 - 18:11]
-// CHECK-source: usrs.m:15:9: StructDecl=:15:9 (Definition) Extent=[15:9 - 18:2]
+// CHECK-source: usrs.m:15:9: StructDecl=MyStruct:15:9 (Definition) Extent=[15:9 - 18:2]
 // CHECK-source: usrs.m:16:7: FieldDecl=wa:16:7 (Definition) Extent=[16:3 - 16:9]
 // CHECK-source: usrs.m:17:7: FieldDecl=moo:17:7 (Definition) Extent=[17:3 - 17:10]
 // CHECK-source: usrs.m:20:6: EnumDecl=Pizza:20:6 (Definition) Extent=[20:1 - 23:2]
diff --git a/clang/test/Sema/address-packed.c b/clang/test/Sema/address-packed.c
--- a/clang/test/Sema/address-packed.c
+++ b/clang/test/Sema/address-packed.c
@@ -136,7 +136,7 @@
 };
 
 int *g4(struct S4 *s4) {
-  return &s4->inner.i; // expected-warning {{packed member 'i' of class or structure 'S4::(anonymous)'}}
+  return &s4->inner.i; // expected-warning {{packed member 'i' of class or structure 'S4::struct (unnamed at}}
 }
 
 struct S5 {
@@ -148,7 +148,7 @@
 };
 
 int *g5(struct S5 *s5) {
-  return &s5->inner.i; // expected-warning {{packed member 'i' of class or structure 'S5::(anonymous)'}}
+  return &s5->inner.i; // expected-warning {{packed member 'i' of class or structure 'S5::struct (unnamed at}}
 }
 
 struct __attribute__((packed, aligned(2))) AlignedTo2 {
@@ -200,7 +200,7 @@
 };
 
 int *anonymousInnerUnion(struct S6 *s) {
-  return &s->x; // expected-warning {{packed member 'x' of class or structure 'S6::(anonymous)'}}
+  return &s->x; // expected-warning {{packed member 'x' of class or structure 'S6::union (anonymous at}}
 }
 
 struct S6a {
@@ -212,7 +212,7 @@
 } __attribute__((packed, aligned(16))) s6;
 
 void g8(void)
-{ 
+{
     f1(&s6.a); // no-warning
     f1(&s6.c); // no-warning
     f1(&s6.d); // expected-warning {{packed member 'd' of class or structure 'S6a'}}
diff --git a/clang/test/Sema/attr-flag-enum.c b/clang/test/Sema/attr-flag-enum.c
--- a/clang/test/Sema/attr-flag-enum.c
+++ b/clang/test/Sema/attr-flag-enum.c
@@ -7,7 +7,7 @@
 };
 
 enum __attribute__((flag_enum)) {
-  g = 0x7,  // expected-warning {{enumeration value 'g' is out of range of flags in enumeration type ''}}
+  g = 0x7,  // expected-warning {{enumeration value 'g' is out of range of flags in enumeration type 'enum (unnamed at}}
 };
 
 enum __attribute__((flag_enum)) flag2 {
diff --git a/clang/test/SemaCXX/attr-unused.cpp b/clang/test/SemaCXX/attr-unused.cpp
--- a/clang/test/SemaCXX/attr-unused.cpp
+++ b/clang/test/SemaCXX/attr-unused.cpp
@@ -10,7 +10,7 @@
   ns_not_unused::Int_not_unused i1; // expected-warning {{unused variable}}
   ns_unused::Int_unused i0; // expected-warning {{'Int_unused' was marked unused but was used}}
 
-  union __attribute__((unused)) { // expected-warning {{'' was marked unused but was used}}
+  union __attribute__((unused)) { // expected-warning {{was marked unused but was used}}
     int i;
   };
   (void) i;
diff --git a/clang/test/SemaCXX/lambda-expressions.cpp b/clang/test/SemaCXX/lambda-expressions.cpp
--- a/clang/test/SemaCXX/lambda-expressions.cpp
+++ b/clang/test/SemaCXX/lambda-expressions.cpp
@@ -121,7 +121,7 @@
   void g(P &p, Q &q, R &r) {
     // FIXME: The note attached to the second error here is just amazingly bad.
     auto pp = [p]{}; // expected-error {{deleted constructor}} expected-cxx14-error {{deleted copy constructor of '(lambda}}
-    // expected-cxx14-note@-1 {{copy constructor of '' is implicitly deleted because field '' has a deleted copy constructor}}
+    // expected-cxx14-note-re@-1 {{copy constructor of '(lambda at {{.*}})' is implicitly deleted because field '' has a deleted copy constructor}}
     auto qq = [q]{}; // expected-error {{deleted function}} expected-note {{because}}
 
     auto a = [r]{}; // expected-note 2{{here}}
@@ -306,16 +306,16 @@
   template<class T>
   struct L {
       T t{};
-      T t2 = ([](int a) { return [](int b) { return b; };})(t)(t);    
+      T t2 = ([](int a) { return [](int b) { return b; };})(t)(t);
   };
-  L<int> l; 
-  
+  L<int> l;
+
   namespace non_template {
     struct L {
       int t = 0;
-      int t2 = ([](int a) { return [](int b) { return b; };})(t)(t);    
+      int t2 = ([](int a) { return [](int b) { return b; };})(t)(t);
     };
-    L l; 
+    L l;
   }
 }
 
@@ -534,9 +534,9 @@
 class S {};
 
 void foo() {
-  const int num = 18; 
+  const int num = 18;
   auto outer = []() {
-    auto inner = [](S<num> &X) {};  
+    auto inner = [](S<num> &X) {};
   };
 }
 }
@@ -584,9 +584,9 @@
 }
 
 namespace PR25627_dont_odr_use_local_consts {
-  
+
   template<int> struct X {};
-  
+
   void foo() {
     const int N = 10;
     (void) [] { X<N> x; };
diff --git a/clang/test/SemaCXX/ms-interface.cpp b/clang/test/SemaCXX/ms-interface.cpp
--- a/clang/test/SemaCXX/ms-interface.cpp
+++ b/clang/test/SemaCXX/ms-interface.cpp
@@ -10,7 +10,7 @@
   bool operator!();
   // expected-error@+1 {{operator 'operator int' is not permitted within an interface type}}
   operator int();
-  // expected-error@+1 {{nested class I1::(anonymous) is not permitted within an interface type}}
+  // expected-error-re@+1 {{nested class I1::(unnamed struct at {{.*}}) is not permitted within an interface type}}
   struct { int a; };
   void fn2() {
     struct A { }; // should be ignored: not a nested class
diff --git a/clang/test/SemaObjCXX/arc-0x.mm b/clang/test/SemaObjCXX/arc-0x.mm
--- a/clang/test/SemaObjCXX/arc-0x.mm
+++ b/clang/test/SemaObjCXX/arc-0x.mm
@@ -154,7 +154,7 @@
   // functions of the containing class.
   struct S0 {
     union {
-      id f0; // expected-note 6 {{'' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
+      id f0; // expected-note-re 6 {{{{.*}} of '(anonymous union at {{.*}})' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
       char f1;
     };
   };
@@ -162,7 +162,7 @@
   struct S1 {
     union {
       union { // expected-note {{copy constructor of 'S1' is implicitly deleted because field '' has a deleted copy constructor}} expected-note {{copy assignment operator of 'S1' is implicitly deleted because field '' has a deleted copy assignment operator}} expected-note 4 {{'S1' is implicitly deleted because field '' has a deleted}}
-        id f0; // expected-note 2 {{'' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
+        id f0; // expected-note-re 2 {{{{.*}} of '(anonymous union at {{.*}}' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
         char f1;
       };
       int f2;
@@ -190,13 +190,13 @@
   S2 *x6;
 
   static union { // expected-error {{call to implicitly-deleted default constructor of}}
-    id g0; // expected-note {{default constructor of '' is implicitly deleted because variant field 'g0' is an ObjC pointer}}
+    id g0; // expected-note-re {{default constructor of '(unnamed union at {{.*}}' is implicitly deleted because variant field 'g0' is an ObjC pointer}}
   };
 
   static union { // expected-error {{call to implicitly-deleted default constructor of}}
-    union { // expected-note {{default constructor of '' is implicitly deleted because field '' has a deleted default constructor}}
-      union { // expected-note {{default constructor of '' is implicitly deleted because field '' has a deleted default constructor}}
-        __weak id g1; // expected-note {{default constructor of '' is implicitly deleted because variant field 'g1' is an ObjC pointer}}
+    union { // expected-note-re {{default constructor of '(unnamed union at {{.*}}' is implicitly deleted because field '' has a deleted default constructor}}
+      union { // expected-note-re {{default constructor of '(anonymous union at {{.*}}' is implicitly deleted because field '' has a deleted default constructor}}
+        __weak id g1; // expected-note-re {{default constructor of '(anonymous union at {{.*}}' is implicitly deleted because variant field 'g1' is an ObjC pointer}}
         int g2;
       };
       int g3;
diff --git a/clang/test/Templight/templight-empty-entries-fix.cpp b/clang/test/Templight/templight-empty-entries-fix.cpp
--- a/clang/test/Templight/templight-empty-entries-fix.cpp
+++ b/clang/test/Templight/templight-empty-entries-fix.cpp
@@ -5,13 +5,13 @@
 }
 
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+'lambda at .*templight-empty-entries-fix.cpp:4:3'$}}
+// CHECK: {{^name:[ ]+'\(lambda at .*templight-empty-entries-fix.cpp:4:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+Begin$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:4:3'$}}
 // CHECK: {{^poi:[ ]+'.*templight-empty-entries-fix.cpp:4:3'$}}
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+'lambda at .*templight-empty-entries-fix.cpp:4:3'$}}
+// CHECK: {{^name:[ ]+'\(lambda at .*templight-empty-entries-fix.cpp:4:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+End$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:4:3'$}}
@@ -225,37 +225,37 @@
 }
 
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+unnamed struct$}}
+// CHECK: {{^name:[ ]+'\(unnamed struct at .*templight-empty-entries-fix.cpp:223:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+Begin$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
 // CHECK: {{^poi:[ ]+'.*templight-empty-entries-fix.cpp:224:5'$}}
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+unnamed struct$}}
+// CHECK: {{^name:[ ]+'\(unnamed struct at .*templight-empty-entries-fix.cpp:223:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+End$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
 // CHECK: {{^poi:[ ]+'.*templight-empty-entries-fix.cpp:224:5'$}}
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+unnamed struct$}}
+// CHECK: {{^name:[ ]+'\(unnamed struct at .*templight-empty-entries-fix.cpp:223:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+Begin$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
 // CHECK: {{^poi:[ ]+'.*templight-empty-entries-fix.cpp:224:5'$}}
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+unnamed struct$}}
+// CHECK: {{^name:[ ]+'\(unnamed struct at .*templight-empty-entries-fix.cpp:223:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+End$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
 // CHECK: {{^poi:[ ]+'.*templight-empty-entries-fix.cpp:224:5'$}}
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+unnamed struct$}}
+// CHECK: {{^name:[ ]+'\(unnamed struct at .*templight-empty-entries-fix.cpp:223:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+Begin$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
 // CHECK: {{^poi:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
 // CHECK-LABEL: {{^---$}}
-// CHECK: {{^name:[ ]+unnamed struct$}}
+// CHECK: {{^name:[ ]+'\(unnamed struct at .*templight-empty-entries-fix.cpp:223:3\)'$}}
 // CHECK: {{^kind:[ ]+Memoization$}}
 // CHECK: {{^event:[ ]+End$}}
 // CHECK: {{^orig:[ ]+'.*templight-empty-entries-fix.cpp:223:3'$}}
diff --git a/clang/unittests/AST/ASTTraverserTest.cpp b/clang/unittests/AST/ASTTraverserTest.cpp
--- a/clang/unittests/AST/ASTTraverserTest.cpp
+++ b/clang/unittests/AST/ASTTraverserTest.cpp
@@ -1011,7 +1011,7 @@
 | |-FieldDecl ''
 | |-FieldDecl ''
 | |-FieldDecl ''
-| `-CXXDestructorDecl '~'
+| `-CXXDestructorDecl '~(lambda at input.cc:9:3)'
 |-ImplicitCastExpr
 | `-DeclRefExpr 'a'
 |-DeclRefExpr 'b'
diff --git a/llvm/utils/lit/lit/TestRunner.py b/llvm/utils/lit/lit/TestRunner.py
--- a/llvm/utils/lit/lit/TestRunner.py
+++ b/llvm/utils/lit/lit/TestRunner.py
@@ -1174,6 +1174,7 @@
             ('%/p', sourcedir.replace('\\', '/')),
             ('%/t', tmpBase.replace('\\', '/') + '.tmp'),
             ('%/T', tmpDir.replace('\\', '/')),
+            ('%/et',tmpName.replace('\\', '\\\\\\\\\\\\\\\\')),
             ])
 
     # "%{/[STpst]:regex_replacement}" should be normalized like "%/[STpst]" but we're