Export of internal Abseil changes.

--
5f1cf6547231f1b1daad6d1b785df6b0b999b3c9 by Samuel Benzaquen <sbenza@google.com>:

Fix uninitialized member in the `iterator` class by using a union of the two
possible states of the iterator.
This silences a Wuninitialized warning in gcc>=7.

PiperOrigin-RevId: 228175148

--
98b4e3204c0ec3cfd4cb037e24d443ea4b63fc84 by CJ Johnson <johnsoncj@google.com>:

Factors out the implementation of InlinedVector::swap(...) into a private member function

PiperOrigin-RevId: 228173383

--
f1432ad3a8b05285c6d55bc4754cfae765485b7f by Abseil Team <absl-team@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 227891984

--
03fc00c7a4efc6000e6d9125cb2e252bffda76fe by Andy Getzendanner <durandal@google.com>:

Add a missing linebreak to a comment and markdownify two unordered lists.

PiperOrigin-RevId: 227861389

--
0d66c9afba4fc9aa52e61d9fb410e165018a7b48 by Abseil Team <absl-team@google.com>:

Add an API to register a new source for the cycle clock.

PiperOrigin-RevId: 227779218

--
14d3f9b70c8818b8541e5fb2f6ca4c59d479de31 by Andy Getzendanner <durandal@google.com>:

Correct a typo in a stripping marker.

PiperOrigin-RevId: 227750014

--
59df88740f4e315beb57a8772f8bcf7879440c74 by Matt Kulukundis <kfm@google.com>:

Switch thread local handling to be more cross platform

PiperOrigin-RevId: 227695133

--
75deed5bfcb5c42534e933f104aa7d94e11e348d by Abseil Team <absl-team@google.com>:

Rollback workaround toolchain bug for incorrect handling of thread_local in inline
functions

PiperOrigin-RevId: 227689133

--
54994bf0afec026e6e0e7a199df0bbb4b7d9a4aa by Derek Mauro <dmauro@google.com>:

Add -pthread to linkopts where it actually belongs, on the library
that uses it.
Fixes https://github.com/abseil/abseil-cpp/issues/240.

PiperOrigin-RevId: 227612492

--
893875f3536b7e0a1bad993aa6b2e083abb3b25a by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 227582833

--
506c9b8e9002ca3389c7040473b68d4cbf94bdcc by Matt Kulukundis <kfm@google.com>:

Workaround toolchain bug for incorrect handling of thread_local in inline
functions

PiperOrigin-RevId: 227561449

--
29ee90d96dfe3114cf93f9bb92ea0cc9e768a407 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 227054634
GitOrigin-RevId: 5f1cf6547231f1b1daad6d1b785df6b0b999b3c9
Change-Id: Ibc90566d92ee6e0ad7e150f513ec7f5d22ec0a94

26 files changed, 11 insertions, 13 deletions

diff --git a/absl/time/internal/cctz/BUILD.bazel b/absl/time/internal/cctz/BUILD.bazel
index e2cfe80..a2053c9 100644
--- a/absl/time/internal/cctz/BUILD.bazel
+++ b/absl/time/internal/cctz/BUILD.bazel
@@ -98,13 +98,13 @@ cc_test(
 cc_test(
     name = "time_zone_lookup_test",
     size = "small",
+    timeout = "moderate",
     srcs = ["src/time_zone_lookup_test.cc"],
     data = [":zoneinfo"],
     tags = [
         "no_test_android_arm",
         "no_test_android_arm64",
         "no_test_android_x86",
-        "no_test_wasm",
     ],
     deps = [
         ":civil_time",
diff --git a/absl/time/internal/cctz/src/time_zone_format_test.cc b/absl/time/internal/cctz/src/time_zone_format_test.cc
index cd0ae23..b99e1c6 100644
--- a/absl/time/internal/cctz/src/time_zone_format_test.cc
+++ b/absl/time/internal/cctz/src/time_zone_format_test.cc
@@ -64,17 +64,6 @@ void TestFormatSpecifier(time_point<D> tp, time_zone tz, const std::string& fmt,
   EXPECT_EQ("xxx " + ans + " yyy", format("xxx " + fmt + " yyy", tp, tz));
 }
 
-// These tests sometimes run on platforms that have zoneinfo data so old
-// that the transition we are attempting to check does not exist, most
-// notably Android emulators.  Fortunately, AndroidZoneInfoSource supports
-// time_zone::version() so, in cases where we've learned that it matters,
-// we can make the check conditionally.
-int VersionCmp(time_zone tz, const std::string& target) {
-  std::string version = tz.version();
-  if (version.empty() && !target.empty()) return 1;  // unknown > known
-  return version.compare(target);
-}
-
 }  // namespace
 
 //
@@ -174,7 +163,9 @@ TEST(Format, PosixConversions) {
   TestFormatSpecifier(tp, tz, "%M", "00");
   TestFormatSpecifier(tp, tz, "%S", "00");
   TestFormatSpecifier(tp, tz, "%U", "00");
+#if !defined(__EMSCRIPTEN__)
   TestFormatSpecifier(tp, tz, "%w", "4");  // 4=Thursday
+#endif
   TestFormatSpecifier(tp, tz, "%W", "00");
   TestFormatSpecifier(tp, tz, "%y", "70");
   TestFormatSpecifier(tp, tz, "%Y", "1970");
@@ -1464,6 +1455,10 @@ TEST(FormatParse, RoundTrip) {
 #if defined(_WIN32) || defined(_WIN64)
   // Initial investigations indicate the %c does not roundtrip on Windows.
   // TODO: Figure out what is going on here (perhaps a locale problem).
+#elif defined(__EMSCRIPTEN__)
+  // strftime() and strptime() use different defintions for "%c" under
+  // emscripten (see https://github.com/kripken/emscripten/pull/7491),
+  // causing its round-trip test to fail.
 #else
   // Even though we don't know what %c will produce, it should roundtrip,
   // but only in the 0-offset timezone.
diff --git a/absl/time/internal/cctz/src/time_zone_lookup_test.cc b/absl/time/internal/cctz/src/time_zone_lookup_test.cc
index e84b946..e986565 100644
--- a/absl/time/internal/cctz/src/time_zone_lookup_test.cc
+++ b/absl/time/internal/cctz/src/time_zone_lookup_test.cc
@@ -666,6 +666,7 @@ int VersionCmp(time_zone tz, const std::string& target) {
 
 }  // namespace
 
+#if !defined(__EMSCRIPTEN__)
 TEST(TimeZones, LoadZonesConcurrently) {
   std::promise<void> ready_promise;
   std::shared_future<void> ready_future(ready_promise.get_future());
@@ -713,6 +714,7 @@ TEST(TimeZones, LoadZonesConcurrently) {
   }
   EXPECT_LE(failures.size(), max_failures) << testing::PrintToString(failures);
 }
+#endif
 
 TEST(TimeZone, NamedTimeZones) {
   const time_zone utc = utc_time_zone();
diff --git a/absl/time/internal/cctz/testdata/version b/absl/time/internal/cctz/testdata/version
index ac954d7..63f5800 100644
--- a/absl/time/internal/cctz/testdata/version
+++ b/absl/time/internal/cctz/testdata/version
@@ -1 +1 @@
-2018g-9-gf0d2759
+2018i
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Sao_Tome b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Sao_Tome
index d2a64bd..59f3759 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Sao_Tome
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Sao_Tome
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/America/Metlakatla b/absl/time/internal/cctz/testdata/zoneinfo/America/Metlakatla
index 2635607..85a7e16 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/America/Metlakatla
+++ b/absl/time/internal/cctz/testdata/zoneinfo/America/Metlakatla
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Hong_Kong b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Hong_Kong
index 8e5c581..91eaff4 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Hong_Kong
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Hong_Kong
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qostanay b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qostanay
new file mode 100644
index 0000000..cb6e2d9
--- /dev/null
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qostanay
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qyzylorda b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qyzylorda
index 00b2784..fc636b3 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qyzylorda
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Qyzylorda
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Tehran b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Tehran
index ad9058b..0ae2f65 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Asia/Tehran
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Asia/Tehran
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Hongkong b/absl/time/internal/cctz/testdata/zoneinfo/Hongkong
index 8e5c581..91eaff4 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Hongkong
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Hongkong
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Iran b/absl/time/internal/cctz/testdata/zoneinfo/Iran
index ad9058b..0ae2f65 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Iran
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Iran
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Kwajalein b/absl/time/internal/cctz/testdata/zoneinfo/Kwajalein
index 54bd71f..d641357 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Kwajalein
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Kwajalein
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Chuuk b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Chuuk
index e79bca2..8004d65 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Chuuk
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Chuuk
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Guam b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Guam
index ffdf8c2..e224247 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Guam
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Guam
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kosrae b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kosrae
index b6bd4b0..11583b1 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kosrae
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kosrae
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kwajalein b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kwajalein
index 54bd71f..d641357 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kwajalein
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Kwajalein
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Majuro b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Majuro
index 53f3288..65990cb 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Majuro
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Majuro
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Nauru b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Nauru
index 7e7d920..86d3b7d 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Nauru
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Nauru
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Palau b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Palau
index 968f195..05633b8 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Palau
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Palau
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Pohnpei b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Pohnpei
index d3393a2..090429c 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Pohnpei
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Pohnpei
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Ponape b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Ponape
index d3393a2..090429c 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Ponape
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Ponape
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Saipan b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Saipan
index ffdf8c2..e224247 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Saipan
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Saipan
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Truk b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Truk
index e79bca2..8004d65 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Truk
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Truk
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Yap b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Yap
index e79bca2..8004d65 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Yap
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Pacific/Yap
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab b/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
index 2729e6e..9a8e424 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
+++ b/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
@@ -211,6 +211,7 @@ KP	+3901+12545	Asia/Pyongyang
 KR	+3733+12658	Asia/Seoul
 KZ	+4315+07657	Asia/Almaty	Kazakhstan (most areas)
 KZ	+4448+06528	Asia/Qyzylorda	Qyzylorda/Kyzylorda/Kzyl-Orda
+KZ	+5312+06337	Asia/Qostanay	Qostanay/Kostanay/Kustanay
 KZ	+5017+05710	Asia/Aqtobe	Aqtöbe/Aktobe
 KZ	+4431+05016	Asia/Aqtau	Mangghystaū/Mankistau
 KZ	+4707+05156	Asia/Atyrau	Atyraū/Atirau/Gur'yev