1 files changed, 14 insertions, 16 deletions
diff --git a/libcxxabi/src/demangle/ItaniumDemangle.h b/libcxxabi/src/demangle/ItaniumDemangle.h
index 9e9d183da7c..53107c9c8d9 100644
--- a/libcxxabi/src/demangle/ItaniumDemangle.h
+++ b/libcxxabi/src/demangle/ItaniumDemangle.h
@@ -7,22 +7,21 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// WARNING: This file defines its contents within an anonymous namespace. It
-// should not be included anywhere other than cxa_demangle.h.
+// Generic itanium demangler library. This file has two byte-per-byte identical
+// copies in the source tree, one in libcxxabi, and the other in llvm.
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LIBCXX_DEMANGLE_ITANIUMDEMANGLE_H
-#define LIBCXX_DEMANGLE_ITANIUMDEMANGLE_H
+#ifndef DEMANGLE_ITANIUMDEMANGLE_H
+#define DEMANGLE_ITANIUMDEMANGLE_H
 
 // FIXME: (possibly) incomplete list of features that clang mangles that this
 // file does not yet support:
 //   - C++ modules TS
 
-#include "Compiler.h"
+#include "DemangleConfig.h"
 #include "StringView.h"
 #include "Utility.h"
-
 #include <cassert>
 #include <cctype>
 #include <cstdio>
@@ -100,8 +99,8 @@
     X(BracedExpr) \
     X(BracedRangeExpr)
 
-namespace {
-namespace itanium_demangle {
+DEMANGLE_NAMESPACE_BEGIN
+
 // Base class of all AST nodes. The AST is built by the parser, then is
 // traversed by the printLeft/Right functions to produce a demangled string.
 class Node {
@@ -199,7 +198,7 @@ public:
   virtual ~Node() = default;
 
 #ifndef NDEBUG
-  DUMP_METHOD void dump() const;
+  DEMANGLE_DUMP_METHOD void dump() const;
 #endif
 };
 
@@ -1283,7 +1282,7 @@ public:
     case SpecialSubKind::iostream:
       return StringView("basic_iostream");
     }
-    _LIBCPP_UNREACHABLE();
+    DEMANGLE_UNREACHABLE;
   }
 
   void printLeft(OutputStream &S) const override {
@@ -1335,7 +1334,7 @@ public:
     case SpecialSubKind::iostream:
       return StringView("iostream");
     }
-    _LIBCPP_UNREACHABLE();
+    DEMANGLE_UNREACHABLE;
   }
 
   void printLeft(OutputStream &S) const override {
@@ -3472,7 +3471,7 @@ Node *AbstractManglingParser<Derived, Alloc>::parseType() {
       Result = getDerived().parseFunctionType();
       break;
     }
-    _LIBCPP_FALLTHROUGH();
+    DEMANGLE_FALLTHROUGH;
   }
   case 'U': {
     Result = getDerived().parseQualifiedType();
@@ -3759,7 +3758,7 @@ Node *AbstractManglingParser<Derived, Alloc>::parseType() {
       // substitution table.
       return Sub;
     }
-    _LIBCPP_FALLTHROUGH();
+    DEMANGLE_FALLTHROUGH;
   }
   //        ::= <class-enum-type>
   default: {
@@ -5183,7 +5182,6 @@ struct ManglingParser : AbstractManglingParser<ManglingParser<Alloc>, Alloc> {
                                Alloc>::AbstractManglingParser;
 };
 
-}  // namespace itanium_demangle
-}  // namespace
+DEMANGLE_NAMESPACE_END
 
-#endif // LIBCXX_DEMANGLE_ITANIUMDEMANGLE_H
+#endif // DEMANGLE_ITANIUMDEMANGLE_H