Version 3.2.6

test/mjsunit/regress/regress-1278.js

 // Copyright 2010 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
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// See: http://code.google.com/p/v8/issues/detail?id=1278
 
-#include "v8.h"
-#include "execution.h"
+// Test that that handling of 0/-0 is correct for binary operations when the
+// TypeRecordingBinaryOpStub transitions through different states.
 
-#include "cctest.h"
+function add(x, y) {
+  return x + y;
+}
 
-using ::v8::Local;
-using ::v8::String;
-using ::v8::Script;
+function sub(x, y) {
+  return x - y;
+}
 
-namespace i = ::v8::internal;
+function mul(x, y) {
+  return x * y;
+}
 
-TEST(MIPSFunctionCalls) {
-  // Disable compilation of natives.
-  i::FLAG_disable_native_files = true;
-  i::FLAG_full_compiler = false;
+function div(x, y) {
+  return x / y;
+}
 
-  v8::HandleScope scope;
-  LocalContext env;  // from cctest.h
+for (var i = 0; i < 10; i++) {
+  assertEquals(0, add(0, 0));
+  assertEquals(0, add(0, -0));
+  assertEquals(0, add(-0, 0));
+  assertEquals(-0, add(-0, -0));
 
-  const char* c_source = "function foo() { return 0x1234; }; foo();";
-  Local<String> source = ::v8::String::New(c_source);
-  Local<Script> script = ::v8::Script::Compile(source);
-  CHECK_EQ(0x1234,  script->Run()->Int32Value());
+  assertEquals(0, sub(0, 0));
+  assertEquals(0, sub(0, -0));
+  assertEquals(-0, sub(-0, 0));
+  assertEquals(0, sub(-0, -0));
+
+  assertEquals(0, mul(0, 0));
+  assertEquals(-0, mul(0, -0));
+  assertEquals(-0, mul(-0, 0));
+  assertEquals(0, mul(-0, -0));
+
+  assertEquals(0, div(0, 1));
+  assertEquals(-0, div(0, -1));
+  assertEquals(-0, div(-0, 1));
+  assertEquals(0, div(-0, -1));
 }