Creation of LTS branch "lts_2019_08_08"20190808

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  - 0238ab0a831f179518c1a814f9584e99da2d75a3 Merge pull request #321 from christoph-cullmann/c4245_fix... by Xiaoyi Zhang <zhangxy988@gmail.com>
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  - 27c30ec671cb7b5ba84c4e79feff7fd0b0ac6338 Avoid undefined behavior when nullptr is passed to memcpy... by Roman Gershman <romange@gmail.com>
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  - 253eb7416421661873afbaa33828a850db978541 [CMake] Set correct flags for clang-cl (#278) by Loo Rong Jie <loorongjie@gmail.com>
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  - c1cecb25a94c075725e9d2640f6b978a8f61957b Implement Span::first and Span::last from C++20 (#274) by Girts <girtsf@users.noreply.github.com>
  - 38b704384cd2f17590b3922b97744be0b43622c9 Changed HTTP URLs to HTTPS where possible (#270) by nik7273 <nik8470@gmail.com>
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  - 89ea0c5ff34aaa5855cfc7aa41f323b8a0ef0ede Merge pull request #255 from uilianries/hotfix/conan by ahedberg <ahedberg@google.com>
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  - 6b4201f9ef650637510a21b8d6cbcc3bee4a606f Fix GCC8 warnings by Boris Staletic <boris.staletic@gmail.com>
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  - 3e2e9b5557e76d098de4b8a2a659125b98ca519b Merge pull request #231 from uilianries/feature/conan by Mark Barolak <mbxx@users.noreply.github.com>
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GitOrigin-RevId: 9ee91d3e430fb33a4590486573792eb0fa146c2d
Change-Id: Ia06e548bc106cc9d136f6c65714be6645317aced

1 files changed, 26 insertions, 16 deletions

diff --git a/absl/hash/hash.h b/absl/hash/hash.h
index 2c8982b8..d36f0960 100644
--- a/absl/hash/hash.h
+++ b/absl/hash/hash.h
@@ -4,7 +4,7 @@
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
-//      http://www.apache.org/licenses/LICENSE-2.0
+//      https://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ -36,25 +36,34 @@
 // framework by simply combining its state with the state of known, hashable
 // types. Hashing of that combined state is separately done by `absl::Hash`.
 //
+// One should assume that a hash algorithm is chosen randomly at the start of
+// each process.  E.g., absl::Hash<int>()(9) in one process and
+// absl::Hash<int>()(9) in another process are likely to differ.
+//
 // Example:
 //
-//   // Suppose we have a class `Circle` for which we want to add hashing
+//   // Suppose we have a class `Circle` for which we want to add hashing:
 //   class Circle {
-//     public:
-//       ...
-//     private:
-//       std::pair<int, int> center_;
-//       int radius_;
-//     };
-//
-//   // To add hashing support to `Circle`, we simply need to add an ordinary
-//   // function `AbslHashValue()`, and return the combined hash state of the
-//   // existing hash state and the class state:
+//    public:
+//     ...
+//    private:
+//     std::pair<int, int> center_;
+//     int radius_;
+//   };
 //
+//   // To add hashing support to `Circle`, we simply need to add a free
+//   // (non-member) function `AbslHashValue()`, and return the combined hash
+//   // state of the existing hash state and the class state. You can add such a
+//   // free function using a friend declaration within the body of the class:
+//   class Circle {
+//    public:
+//     ...
 //     template <typename H>
 //     friend H AbslHashValue(H h, const Circle& c) {
 //       return H::combine(std::move(h), c.center_, c.radius_);
 //     }
+//     ...
+//   };
 //
 // For more information, see Adding Type Support to `absl::Hash` below.
 //
@@ -64,7 +73,7 @@
 #include "absl/hash/internal/hash.h"
 
 namespace absl {
-inline namespace lts_2018_12_18 {
+inline namespace lts_2019_08_08 {
 
 // -----------------------------------------------------------------------------
 // `absl::Hash`
@@ -236,7 +245,7 @@ using Hash = absl::hash_internal::Hash<T>;
 //     }
 //    private:
 //     virtual void HashValue(absl::HashState state) const = 0;
-//  };
+//   };
 //
 //   class Impl : Interface {
 //    private:
@@ -244,7 +253,7 @@ using Hash = absl::hash_internal::Hash<T>;
 //       absl::HashState::combine(std::move(state), v1_, v2_);
 //     }
 //     int v1_;
-//     string v2_;
+//     std::string v2_;
 //   };
 class HashState : public hash_internal::HashStateBase<HashState> {
  public:
@@ -309,6 +318,7 @@ class HashState : public hash_internal::HashStateBase<HashState> {
   void (*combine_contiguous_)(void*, const unsigned char*, size_t);
 };
 
-}  // inline namespace lts_2018_12_18
+}  // inline namespace lts_2019_08_08
 }  // namespace absl
+
 #endif  // ABSL_HASH_HASH_H_