Fix more -Wsign-compare bugs with GCC 4.9.2.

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 13374 matching lines @@
     CHECK(!arr->CreateDataProperty(env.local(), v8_str("length"),
                                    v8::Integer::New(isolate, 1)).FromJust());
     CHECK(!try_catch.HasCaught());
   }
   {
     // Special cases for arrays: index exceeds the array's length
     v8::TryCatch try_catch(isolate);
     CHECK(arr->CreateDataProperty(env.local(), 1, v8::Integer::New(isolate, 23))
               .FromJust());
     CHECK(!try_catch.HasCaught());
-    CHECK_EQ(2, arr->Length());
+    CHECK_EQ(2U, arr->Length());
     v8::Local<v8::Value> val = arr->Get(env.local(), 1).ToLocalChecked();
     CHECK(val->IsNumber());
     CHECK_EQ(23.0, val->NumberValue(env.local()).FromJust());
 
     // Set an existing entry.
     CHECK(arr->CreateDataProperty(env.local(), 0, v8::Integer::New(isolate, 42))
               .FromJust());
     CHECK(!try_catch.HasCaught());
     val = arr->Get(env.local(), 0).ToLocalChecked();
     CHECK(val->IsNumber());
@@ skipping 82 matching lines @@
     CHECK(!arr->DefineOwnProperty(env.local(), v8_str("length"),
                                   v8::Integer::New(isolate, 1)).FromJust());
     CHECK(!try_catch.HasCaught());
   }
   {
     // Special cases for arrays: index exceeds the array's length
     v8::TryCatch try_catch(isolate);
     CHECK(arr->DefineOwnProperty(env.local(), v8_str("1"),
                                  v8::Integer::New(isolate, 23)).FromJust());
     CHECK(!try_catch.HasCaught());
-    CHECK_EQ(2, arr->Length());
+    CHECK_EQ(2U, arr->Length());
     v8::Local<v8::Value> val = arr->Get(env.local(), 1).ToLocalChecked();
     CHECK(val->IsNumber());
     CHECK_EQ(23.0, val->NumberValue(env.local()).FromJust());
 
     // Set an existing entry.
     CHECK(arr->DefineOwnProperty(env.local(), v8_str("0"),
                                  v8::Integer::New(isolate, 42)).FromJust());
     CHECK(!try_catch.HasCaught());
     val = arr->Get(env.local(), 0).ToLocalChecked();
     CHECK(val->IsNumber());
@@ skipping 7861 matching lines @@
 
 TEST(Map) {
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope handle_scope(isolate);
   LocalContext env;
 
   v8::Local<v8::Map> map = v8::Map::New(isolate);
   CHECK(map->IsObject());
   CHECK(map->IsMap());
   CHECK(map->GetPrototype()->StrictEquals(CompileRun("Map.prototype")));
-  CHECK_EQ(0, map->Size());
+  CHECK_EQ(0U, map->Size());
 
   v8::Local<v8::Value> val = CompileRun("new Map([[1, 2], [3, 4]])");
   CHECK(val->IsMap());
   map = v8::Local<v8::Map>::Cast(val);
-  CHECK_EQ(2, map->Size());
+  CHECK_EQ(2U, map->Size());
 
   v8::Local<v8::Array> contents = map->AsArray();
-  CHECK_EQ(4, contents->Length());
+  CHECK_EQ(4U, contents->Length());
   CHECK_EQ(1, contents->Get(0).As<v8::Int32>()->Value());
   CHECK_EQ(2, contents->Get(1).As<v8::Int32>()->Value());
   CHECK_EQ(3, contents->Get(2).As<v8::Int32>()->Value());
   CHECK_EQ(4, contents->Get(3).As<v8::Int32>()->Value());
 
   map = v8::Map::FromArray(env.local(), contents).ToLocalChecked();
-  CHECK_EQ(2, map->Size());
+  CHECK_EQ(2U, map->Size());
 
   // Odd lengths result in a null MaybeLocal.
   contents = v8::Array::New(isolate, 41);
   CHECK(v8::Map::FromArray(env.local(), contents).IsEmpty());
 }
 
 
 TEST(Set) {
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope handle_scope(isolate);
   LocalContext env;
 
   v8::Local<v8::Set> set = v8::Set::New(isolate);
   CHECK(set->IsObject());
   CHECK(set->IsSet());
   CHECK(set->GetPrototype()->StrictEquals(CompileRun("Set.prototype")));
-  CHECK_EQ(0, set->Size());
+  CHECK_EQ(0U, set->Size());
 
   v8::Local<v8::Value> val = CompileRun("new Set([1, 2])");
   CHECK(val->IsSet());
   set = v8::Local<v8::Set>::Cast(val);
-  CHECK_EQ(2, set->Size());
+  CHECK_EQ(2U, set->Size());
 
   v8::Local<v8::Array> keys = set->AsArray();
-  CHECK_EQ(2, keys->Length());
+  CHECK_EQ(2U, keys->Length());
   CHECK_EQ(1, keys->Get(0).As<v8::Int32>()->Value());
   CHECK_EQ(2, keys->Get(1).As<v8::Int32>()->Value());
 
   set = v8::Set::FromArray(env.local(), keys).ToLocalChecked();
-  CHECK_EQ(2, set->Size());
+  CHECK_EQ(2U, set->Size());
 }