1 files changed, 50 insertions, 0 deletions
diff --git a/deps/v8/src/numbers/hash-seed-inl.h b/deps/v8/src/numbers/hash-seed-inl.h
new file mode 100644
index 0000000000..dad8db01c7
--- /dev/null
+++ b/deps/v8/src/numbers/hash-seed-inl.h
@@ -0,0 +1,50 @@
+// Copyright 2019 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.
+
+#ifndef V8_NUMBERS_HASH_SEED_INL_H_
+#define V8_NUMBERS_HASH_SEED_INL_H_
+
+#include <stdint.h>
+
+// The #includes below currently lead to cyclic transitive includes, so
+// HashSeed() ends up being required before it is defined, so we have to
+// declare it here. This is a workaround; if we needed this permanently then
+// we should put that line into a "hash-seed.h" header; but we won't need
+// it for long.
+// TODO(jkummerow): Get rid of this by breaking circular include dependencies.
+namespace v8 {
+namespace internal {
+
+class Isolate;
+class ReadOnlyRoots;
+
+// TODO(v8:7464): Remove the Isolate version of this.
+inline uint64_t HashSeed(Isolate* isolate);
+inline uint64_t HashSeed(ReadOnlyRoots roots);
+
+}  // namespace internal
+}  // namespace v8
+
+// See comment above for why this isn't at the top of the file.
+#include "src/objects/fixed-array-inl.h"
+#include "src/roots/roots-inl.h"
+
+namespace v8 {
+namespace internal {
+
+inline uint64_t HashSeed(Isolate* isolate) {
+  return HashSeed(ReadOnlyRoots(isolate));
+}
+
+inline uint64_t HashSeed(ReadOnlyRoots roots) {
+  uint64_t seed;
+  roots.hash_seed().copy_out(0, reinterpret_cast<byte*>(&seed), kInt64Size);
+  DCHECK(FLAG_randomize_hashes || seed == 0);
+  return seed;
+}
+
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_NUMBERS_HASH_SEED_INL_H_