Initialize typed array content for rempio2result during bootstrapping.

src/bootstrapper.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 1626 matching lines @@
 
   {  // Initialize trigonometric lookup tables and constants.
     const size_t num_elements = arraysize(fdlibm::MathConstants::constants);
     double* data = const_cast<double*>(fdlibm::MathConstants::constants);
     SetBuiltinTypedArray<double>(isolate(), builtins, kExternalFloat64Array,
                                  data, num_elements, "kMath");
   }
 
   {  // Initialize a result array for rempio2 calculation
     const size_t num_elements = 2;
-    SetBuiltinTypedArray<double>(isolate(), builtins, kExternalFloat64Array,
-                                 NULL, num_elements, "rempio2result");
+    double* data =
+        SetBuiltinTypedArray<double>(isolate(), builtins, kExternalFloat64Array,
+                                     NULL, num_elements, "rempio2result");
+    for (size_t i = 0; i < num_elements; i++) data[i] = 0;
   }
 }
 
 
 #define EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(id) \
   void Genesis::InstallNativeFunctions_##id() {}
 
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_modules)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_arrays)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_array_includes)
@@ skipping 1300 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal