Export of internal Abseil changes.

--
5a5dba4252e764e6737070bf0a31074bf23a3b41 by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 244898913

--
3eb7d5b445ffbf08a104e39cd15aecf568417333 by Matt Calabrese <calabrese@google.com>:

Introduce absl::is_trivially_move_constructible and absl::is_trivially_move_assignable, and update the absl::is_trivially_copy_constructible and absl::is_trivially_copy_assignable traits to use similar techniques (should now be closer to the standard behavior).

PiperOrigin-RevId: 244859015

--
7da05a24fa786cab3985de0c39a186d73dcbcfb5 by Abseil Team <absl-team@google.com>:

Fix misspellings in comments in raw_hash_set.h.

PiperOrigin-RevId: 244754700

--
5c057be96048f21473d5ec45005ab4dcd8dd354f by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 244744239

--
592394e3c2e98f1238d3fb6fcb0d20c3e3739ba9 by Derek Mauro <dmauro@google.com>:

Limit the raw_hash_set prefetch test to x86-64.

PiperOrigin-RevId: 244737534

--
99ebe4e003633c8ff7838b035b31a827994879ef by Derek Mauro <dmauro@google.com>:

Workaround warning 4091 in an MSVC header.

PiperOrigin-RevId: 244701744

--
0aa23f09a32efe7985ee55b0217190f08da42477 by Abseil Team <absl-team@google.com>:

Fix comment typo.

PiperOrigin-RevId: 244659371

--
c6cdb87e9f28062c8daa29b3d8d68182ecc16383 by Derek Mauro <dmauro@google.com>:

Fix -Wundef warnings and support -Wundef.

PiperOrigin-RevId: 244244968

--
06b81245f7696b20c3c63b0618d33ac25e29cad6 by Abseil Team <absl-team@google.com>:

Fix a typo in inlined_vector.h.

PiperOrigin-RevId: 244230809

--
94877a2125d2cfe837384240e4d6551f39d737e4 by Greg Falcon <gfalcon@google.com>:

Fix sysinfo_test for emscripten.

PiperOrigin-RevId: 244198804

--
ec7783531ef7f9df2da37d341d61f7cb2bf843f0 by Shaindel Schwartz <shaindel@google.com>:

Import of CCTZ from GitHub.

Fixes #291.

PiperOrigin-RevId: 244184598

--
b652c14fa95ea206c217487ee713b11f5d1762b3 by Matt Calabrese <calabrese@google.com>:

Emulate the `in_place_index` and `in_place_type` variable templates such that they are syntactically usable in C++11 with `any` and `variant`. Also pull in the variable templates from namespace std when available.

The main observable differences here are:

1)
The types of `in_place_index_t<I>` and `in_place_type_t<T>` become function pointer types rather than structs when using the implementation that is not an alias of the std equivalents.

2)
The types of `in_place_index<I>` and `in_place_type<T>` are not directly `in_place_index_t<I>` and `in_place_type_t<T>`, but rather they become function types that decay to the corresponding function pointer types.

3)
The default constructor for `in_place_index_t` and `in_place_type_t` instantiations is no longer explicit, but for these templates I think that's less important than for something like `in_place_t` since the _type_t and _index_t versions basically never have their template parameter non-deduced when participating in overload resolution with conflicting candidates.

4) While idiomatic usage of `in_place_type_t` and `in_place_index_t` with std::variant and std::any should not be affected, there is the possibility that strange, non-idiomatic uses may be affected in the wild.

5) Default construction (rather than value-initialization) leads to a default-constructed pointer.

PiperOrigin-RevId: 244180003

--
b9ac5a96581837ffa24532117b7ea302a5569751 by Derek Mauro <dmauro@google.com>:

Fix MSVC debug assertion.

isprint is undefined for values not representable as unsigned char or
EOF.

PiperOrigin-RevId: 244083005

--
41758be6137c2f25e84b50f23938e49484be2903 by Shaindel Schwartz <shaindel@google.com>:

Update config settings for Apple platforms.

PiperOrigin-RevId: 244040587

--
c90df6a26db94b0305a0c954455a621542a89d91 by Abseil Team <absl-team@google.com>:

Internal change

PiperOrigin-RevId: 244024427

--
c71e9ceb89495354eca7d02bd905ffeaa9029aec by Derek Mauro <dmauro@google.com>:

Adds missing ABSL_DEFAULT_COPTS and ABSL_TEST_COPTS to CMakeLists.txt

Don't error on deprecated declarations in tests. It is completely
reasonable to test that code marked deprecated still works.

PiperOrigin-RevId: 244003941

--
e1326a96527a8ba9b8d120161545260da9c4562e by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 243990623

--
90b8e12934c7711e1bfcc0117d21288bf9220dee by Abseil Team <absl-team@google.com>:

Add variation of absl::Base64Escape/WebSafeBase64Escape that directly returns its result.

PiperOrigin-RevId: 243894308

--
317fef3344481ebc5c35712d42f5d8a0fa64dff4 by Abseil Team <absl-team@google.com>:

Enable raw logging in Emscripten builds.

PiperOrigin-RevId: 243893705
GitOrigin-RevId: 5a5dba4252e764e6737070bf0a31074bf23a3b41
Change-Id: I19293aab73cc98d9e9bf6a9fdc30819764adb9db

4 files changed, 55 insertions, 13 deletions

diff --git a/absl/container/CMakeLists.txt b/absl/container/CMakeLists.txt
index 3c44bd0ef160..9531d7f92448 100644
--- a/absl/container/CMakeLists.txt
+++ b/absl/container/CMakeLists.txt
@@ -27,7 +27,9 @@ absl_cc_library(
   NAME
     compressed_tuple
   HDRS
-   "internal/compressed_tuple.h"
+    "internal/compressed_tuple.h"
+  COPTS
+    ${ABSL_DEFAULT_COPTS}
   DEPS
     absl::utility
   PUBLIC
@@ -38,6 +40,8 @@ absl_cc_test(
     compressed_tuple_test
   SRCS
     "internal/compressed_tuple_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::compressed_tuple
     absl::memory
@@ -68,6 +72,7 @@ absl_cc_test(
   SRCS
     "fixed_array_test.cc"
   COPTS
+    ${ABSL_TEST_COPTS}
     ${ABSL_EXCEPTIONS_FLAG}
   LINKOPTS
     ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}
@@ -84,6 +89,8 @@ absl_cc_test(
     fixed_array_test_noexceptions
   SRCS
     "fixed_array_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::fixed_array
     absl::exception_testing
@@ -98,6 +105,7 @@ absl_cc_test(
   SRCS
     "fixed_array_exception_safety_test.cc"
   COPTS
+    ${ABSL_TEST_COPTS}
     ${ABSL_EXCEPTIONS_FLAG}
   LINKOPTS
     ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}
@@ -151,6 +159,7 @@ absl_cc_test(
   SRCS
     "inlined_vector_test.cc"
   COPTS
+    ${ABSL_TEST_COPTS}
     ${ABSL_EXCEPTIONS_FLAG}
   LINKOPTS
     ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}
@@ -172,6 +181,8 @@ absl_cc_test(
     inlined_vector_test_noexceptions
   SRCS
     "inlined_vector_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::inlined_vector
     absl::test_instance_tracker
@@ -201,6 +212,8 @@ absl_cc_test(
     test_instance_tracker_test
   SRCS
     "internal/test_instance_tracker_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::test_instance_tracker
     gmock_main
@@ -227,6 +240,8 @@ absl_cc_test(
     flat_hash_map_test
   SRCS
     "flat_hash_map_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::flat_hash_map
     absl::hash_generator_testing
@@ -261,6 +276,7 @@ absl_cc_test(
   SRCS
     "flat_hash_set_test.cc"
   COPTS
+    ${ABSL_TEST_COPTS}
     "-DUNORDERED_SET_CXX17"
   DEPS
     absl::flat_hash_set
@@ -296,6 +312,8 @@ absl_cc_test(
     node_hash_map_test
   SRCS
     "node_hash_map_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::hash_generator_testing
     absl::node_hash_map
@@ -329,6 +347,7 @@ absl_cc_test(
   SRCS
     "node_hash_set_test.cc"
   COPTS
+    ${ABSL_TEST_COPTS}
     "-DUNORDERED_SET_CXX17"
   DEPS
     absl::hash_generator_testing
@@ -358,6 +377,8 @@ absl_cc_test(
     container_memory_test
   SRCS
     "internal/container_memory_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::container_memory
     absl::strings
@@ -383,6 +404,8 @@ absl_cc_test(
     hash_function_defaults_test
   SRCS
     "internal/hash_function_defaults_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::hash_function_defaults
     absl::hash
@@ -424,6 +447,8 @@ absl_cc_test(
     hash_policy_testing_test
   SRCS
     "internal/hash_policy_testing_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::hash_policy_testing
     gmock_main
@@ -446,6 +471,8 @@ absl_cc_test(
     hash_policy_traits_test
   SRCS
     "internal/hash_policy_traits_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::hash_policy_traits
     gmock_main
@@ -472,6 +499,8 @@ absl_cc_test(
     hashtablez_sampler_test
   SRCS
     "internal/hashtablez_sampler_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::hashtablez_sampler
     absl::have_sse
@@ -523,6 +552,8 @@ absl_cc_test(
     node_hash_policy_test
   SRCS
     "internal/node_hash_policy_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::hash_policy_traits
     absl::node_hash_policy
@@ -587,6 +618,8 @@ absl_cc_test(
     raw_hash_set_test
   SRCS
     "internal/raw_hash_set_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::container_memory
     absl::hash_function_defaults
@@ -604,6 +637,8 @@ absl_cc_test(
     raw_hash_set_allocator_test
   SRCS
     "internal/raw_hash_set_allocator_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::raw_hash_set
     absl::tracked
@@ -632,6 +667,8 @@ absl_cc_test(
     layout_test
   SRCS
     "internal/layout_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::layout
     absl::base
@@ -765,6 +802,8 @@ absl_cc_test(
     unordered_set_test
   SRCS
     "internal/unordered_set_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::unordered_set_constructor_test
     absl::unordered_set_lookup_test
@@ -778,6 +817,8 @@ absl_cc_test(
     unordered_map_test
   SRCS
     "internal/unordered_map_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   DEPS
     absl::unordered_map_constructor_test
     absl::unordered_map_lookup_test
diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index 978d5033de93..34e9aa0a124e 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -174,9 +174,9 @@ class InlinedVector {
   // Creates an inlined vector by moving in the contents of an `other` inlined
   // vector without performing any allocations. If `other` contains allocated
   // memory, the newly-created instance will take ownership of that memory
-  // (leaving `other` itself empty). However, if `other` does not contain any
-  // allocated memory, the new inlined vector will  will perform element-wise
-  // move construction of `other`s elements.
+  // (leaving `other` empty). However, if `other` does not contain allocated
+  // memory (i.e. is inlined), the new inlined vector will perform element-wise
+  // move construction of `other`'s elements.
   //
   // NOTE: since no allocation is performed for the inlined vector in either
   // case, the `noexcept(...)` specification depends on whether moving the
diff --git a/absl/container/internal/raw_hash_set.h b/absl/container/internal/raw_hash_set.h
index 9c926812a07a..8ac0dda29a13 100644
--- a/absl/container/internal/raw_hash_set.h
+++ b/absl/container/internal/raw_hash_set.h
@@ -1437,15 +1437,15 @@ class raw_hash_set {
 
   void initialize_slots() {
     assert(capacity_);
-    // Folks with custom allocators often make unwaranted assumptions about the
+    // Folks with custom allocators often make unwarranted assumptions about the
     // behavior of their classes vis-a-vis trivial destructability and what
     // calls they will or wont make.  Avoid sampling for people with custom
-    // allocators to get us out of this mess.  This is not a hard guarntee but a
-    // workaround while we plan the exact guarantee we want to provide.
+    // allocators to get us out of this mess.  This is not a hard guarantee but
+    // a workaround while we plan the exact guarantee we want to provide.
     //
     // People are often sloppy with the exact type of their allocator (sometimes
     // it has an extra const or is missing the pair, but rebinds made it work
-    // anyway).  To avoid the ambiguitity, we work off SlotAlloc which we have
+    // anyway).  To avoid the ambiguity, we work off SlotAlloc which we have
     // bound more carefully.
     if (std::is_same<SlotAlloc, std::allocator<slot_type>>::value &&
         slots_ == nullptr) {
diff --git a/absl/container/internal/raw_hash_set_test.cc b/absl/container/internal/raw_hash_set_test.cc
index cb8451211879..ed4ca8c88d3b 100644
--- a/absl/container/internal/raw_hash_set_test.cc
+++ b/absl/container/internal/raw_hash_set_test.cc
@@ -433,9 +433,10 @@ TEST(Table, Prefetch) {
 
   // Do not run in debug mode, when prefetch is not implemented, or when
   // sanitizers are enabled, or on WebAssembly.
-#if defined(NDEBUG) && defined(__GNUC__) && !defined(ADDRESS_SANITIZER) && \
-    !defined(MEMORY_SANITIZER) && !defined(THREAD_SANITIZER) &&            \
-    !defined(UNDEFINED_BEHAVIOR_SANITIZER) && !defined(__EMSCRIPTEN__)
+#if defined(NDEBUG) && defined(__GNUC__) && defined(__x86_64__) &&          \
+    !defined(ADDRESS_SANITIZER) && !defined(MEMORY_SANITIZER) &&            \
+    !defined(THREAD_SANITIZER) && !defined(UNDEFINED_BEHAVIOR_SANITIZER) && \
+    !defined(__EMSCRIPTEN__)
   const auto now = [] { return absl::base_internal::CycleClock::Now(); };
 
   // Make size enough to not fit in L2 cache (16.7 Mb)
@@ -1080,7 +1081,7 @@ ProbeStats CollectProbeStatsOnKeysXoredWithSeed(const std::vector<int64_t>& keys
 
 ExpectedStats XorSeedExpectedStats() {
   constexpr bool kRandomizesInserts =
-#if NDEBUG
+#ifdef NDEBUG
       false;
 #else   // NDEBUG
       true;
@@ -1174,7 +1175,7 @@ ProbeStats CollectProbeStatsOnLinearlyTransformedKeys(
 
 ExpectedStats LinearTransformExpectedStats() {
   constexpr bool kRandomizesInserts =
-#if NDEBUG
+#ifdef NDEBUG
       false;
 #else   // NDEBUG
       true;