Both SameValue and SameValueZero consider different NaNs equal, so we
better assign the same hash value to all NaNs.
BUG=v8:3859
LOG=y
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/
897593002
Cr-Commit-Position: refs/heads/master@{#26391}
// The object is either a number, a name, an odd-ball,
// a real JS object, or a Harmony proxy.
if (IsNumber()) {
- uint32_t hash = ComputeLongHash(double_to_uint64(Number()));
+ uint32_t hash = std::isnan(Number())
+ ? Smi::kMaxValue
+ : ComputeLongHash(double_to_uint64(Number()));
return Smi::FromInt(hash & Smi::kMaxValue);
}
if (IsName()) {
--- /dev/null
+// Copyright 2015 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.
+
+assertEquals(1, new Set([NaN, NaN, NaN]).size);
+assertEquals(42, new Map([[NaN, 42]]).get(NaN));