Revert Dart_PropagateError until I can track down the problems in

runtime/vm/unit_test.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_UNIT_TEST_H_
 #define VM_UNIT_TEST_H_
 
 #include "include/dart_api.h"
 
 #include "vm/ast.h"
@@ skipping 60 matching lines @@
   static void CodeGenTestRun##name(const Function& function);                  \
   TEST_CASE(name) {                                                            \
     CodeGenTest __test__(""#name);                                             \
     CodeGenTestGenerate##name(&__test__);                                      \
     __test__.Compile();                                                        \
     CodeGenTestRun##name(__test__.function());                                 \
   }                                                                            \
   static void CodeGenTestRun##name(const Function& function) {                 \
     GrowableArray<const Object*>  arguments;                                   \
     const Array& kNoArgumentNames = Array::Handle();                           \
-    Object& result = Object::Handle();                                         \
+    Instance& result = Instance::Handle();                                     \
     result = DartEntry::InvokeStatic(function, arguments, kNoArgumentNames);   \
-    EXPECT(!result.IsError());                                                 \
-    Instance& actual = Instance::Handle();                                     \
-    actual ^= result.raw();                                                    \
-    EXPECT(actual.Equals(Instance::Handle(expected)));                         \
+    EXPECT(result.Equals(Instance::Handle(expected)));                         \
   }
 
 
 // Pass the name of test, and use the generated function to call it
 // and evaluate its result.
 #define CODEGEN_TEST_RAW_RUN(name, function)                                   \
   static void CodeGenTestRun##name(const Function& function);                  \
   TEST_CASE(name) {                                                            \
     CodeGenTest __test__(""#name);                                             \
     CodeGenTestGenerate##name(&__test__);                                      \
@@ skipping 14 matching lines @@
     __test2__.Compile();                                                       \
     /* Generate code for name1, providing function2 */                         \
     CodeGenTest __test1__(""#name1);                                           \
     CodeGenTestGenerate##name1(__test2__.function(), &__test1__);              \
     __test1__.Compile();                                                       \
     CodeGenTestRun##name1(__test1__.function());                               \
   }                                                                            \
   static void CodeGenTestRun##name1(const Function& function) {                \
     GrowableArray<const Object*> arguments;                                    \
     const Array& kNoArgumentNames = Array::Handle();                           \
-    Object& result = Object::Handle();                                         \
+    Instance& result = Instance::Handle();                                     \
     result = DartEntry::InvokeStatic(function, arguments, kNoArgumentNames);   \
-    EXPECT(!result.IsError());                                                 \
-    Instance& actual = Instance::Handle();                                     \
-    actual ^= result.raw();                                                    \
-    EXPECT(actual.Equals(Instance::Handle(expected)));                         \
+    EXPECT(result.Equals(Instance::Handle(expected)));                         \
   }
 
 
 namespace dart {
 
 // Forward declarations.
 class Assembler;
 class CodeGenerator;
 class VirtualMemory;
 
@@ skipping 142 matching lines @@
 
 #define EXPECT_VALID(handle)                                                  \
   if (Dart_IsError((handle))) {                                               \
     dart::Expect(__FILE__, __LINE__).Fail("invalid handle '%s':\n    '%s'\n", \
                                           #handle, Dart_GetError(handle));    \
   }
 
 }  // namespace dart
 
 #endif  // VM_UNIT_TEST_H_