Abseil LTS 2020092320200923

What's New:
* `absl::StatusOr<T>` has been released. See our [blog
  post](https://abseil.io/blog/2020-091021-status) for more
  information.
* Abseil Flags reflection interfaces have been released.
* Abseil Flags memory usage has been significantly optimized.
* Abseil now supports a "hardened" build mode. This build mode enables
  runtime checks that guard against programming errors that may lead
  to security vulnerabilities.

Notable Fixes:
* Sanitizer dynamic annotations like `AnnotateRWLockCreate` that are
  also defined by the compiler sanitizer implementation are no longer
  also defined by Abseil.
* Sanitizer macros are now prefixed with `ABSL_` to avoid naming collisions.
* Sanitizer usage is now automatically detected and no longer requires
  macros like `ADDRESS_SANITIZER` to be defined on the command line.

Breaking Changes:
* Abseil no longer contains a `dynamic_annotations` library. Users
  using a supported build system (Bazel or CMake) are unaffected by
  this, but users manually specifying link libraries may get an error
  about a missing linker input.

Baseline: 7680a5f8efe32de4753baadbd63e74e59d95bac1
Cherry picks: None

1 files changed, 39 insertions, 1 deletions

diff --git a/absl/status/BUILD.bazel b/absl/status/BUILD.bazel
index 2b83077d..189bd73d 100644
--- a/absl/status/BUILD.bazel
+++ b/absl/status/BUILD.bazel
@@ -26,11 +26,12 @@ load(
 
 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 cc_library(
     name = "status",
     srcs = [
+        "internal/status_internal.h",
         "status.cc",
         "status_payload_printer.cc",
     ],
@@ -40,6 +41,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     deps = [
+        "//absl/base:atomic_hook",
         "//absl/base:config",
         "//absl/base:core_headers",
         "//absl/base:raw_logging_internal",
@@ -63,3 +65,39 @@ cc_test(
         "@com_google_googletest//:gtest_main",
     ],
 )
+
+cc_library(
+    name = "statusor",
+    srcs = [
+        "internal/statusor_internal.h",
+        "statusor.cc",
+    ],
+    hdrs = [
+        "statusor.h",
+    ],
+    copts = ABSL_DEFAULT_COPTS,
+    deps = [
+        ":status",
+        "//absl/base:core_headers",
+        "//absl/base:raw_logging_internal",
+        "//absl/meta:type_traits",
+        "//absl/strings",
+        "//absl/types:variant",
+        "//absl/utility",
+    ],
+)
+
+cc_test(
+    name = "statusor_test",
+    size = "small",
+    srcs = ["statusor_test.cc"],
+    deps = [
+        ":status",
+        ":statusor",
+        "//absl/base",
+        "//absl/memory",
+        "//absl/types:any",
+        "//absl/utility",
+        "@com_google_googletest//:gtest_main",
+    ],
+)