Resubmit reverted r40623 unchanged after GC issue fixed.

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 148 matching lines @@
 
 // The following functions are marked as invisible, meaning they will be hidden
 // in the stack trace and will be hidden from reflective access.
 // (Library, class name, method name)
 // Additionally, private functions in dart:* that are native or constructors are
 // marked as invisible by the parser.
 #define INVISIBLE_CLASS_FUNCTIONS(V)                                           \
   V(CoreLibrary, int, _throwFormatException)                                   \
   V(CoreLibrary, int, _parse)                                                  \
   V(CoreLibrary, _Bigint, _mulAdd)                                             \
+  V(CoreLibrary, _Bigint, _sqrAdd)                                             \
 
 #define INVISIBLE_LIBRARY_FUNCTIONS(V)                                         \
   V(TypedDataLibrary, _toInt8)                                                 \
   V(TypedDataLibrary, _toInt16)                                                \
   V(TypedDataLibrary, _toInt32)                                                \
   V(TypedDataLibrary, _toInt64)                                                \
   V(TypedDataLibrary, _toUint8)                                                \
   V(TypedDataLibrary, _toUint16)                                               \
   V(TypedDataLibrary, _toUint32)                                               \
   V(TypedDataLibrary, _toUint64)                                               \
@@ skipping 20111 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart