Throw a TypeError when calling "next" method of a newly created generator with a value

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 6f8989a934cd45396b7d39215a7777a60efb5bbf..49ee16c1437a3f227aa41943d70ff93a7896e1fd 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -1998,6 +1998,19 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       EmitReturnSequence();
 
       __ bind(&resume);
+      Label init_value_check_done;
+      if (expr->yield_kind() == Yield::INITIAL) {
+        // When value is provided and it is not undefined, throw error.
+        __ CompareRoot(result_register(), Heap::kUndefinedValueRootIndex);
+        __ j(equal, &init_value_check_done);
+        // This error should be raised from the Generator.prototype.next side.
+        // So in this case, we return the hole value as a marker. The caller
+        // checks the result value and if it is the hole value, the caller
+        // throws error.
+        __ PushRoot(Heap::kTheHoleValueRootIndex);
+        __ jmp(&suspend);
+      }
+      __ bind(&init_value_check_done);
       context()->Plug(result_register());
       break;
     }
@@ -2216,7 +2229,17 @@ void FullCodeGenerator::EmitGeneratorResume(Expression *generator,
   __ push(rbx);
   __ CallRuntime(Runtime::kThrowGeneratorStateError, 1);
 
+  // Throw error if we attempt to pass a value to an unborn generator.
+  Label wrong_start;
+  __ bind(&wrong_start);
+  __ CallRuntime(Runtime::kThrowGeneratorStartError, 0);
+
   __ bind(&done);
+  // When a value is passed to an unborn generator, the result becomes the hole
+  // value. And we need to throw GeneratorStartError in the caller side.
+  // (Generator.prototype.next)
+  __ CompareRoot(result_register(), Heap::kTheHoleValueRootIndex);
+  __ j(equal, &wrong_start);
   context()->Plug(result_register());
 }