Export of internal Abseil changes.

--
a874475e842d2adeb31bb7bd37bdd6eb15a2aeb9 by Mark Barolak <mbar@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 256414250

--
c95e6c21944c59c9b9b9e7eb9dc79cfb9ae5ef8d by CJ Johnson <johnsoncj@google.com>:

Update the license year + run clang-format for the FixedArray and InlinedVector test files

PiperOrigin-RevId: 256376285

--
f430b04f332d6b89cb8447b07217e391e1c38000 by Derek Mauro <dmauro@google.com>:

Migrate the Linux CMake tests from GCC 4.8 to the GCC latest
version. This will allow us to delete the GCC 4.8 test since that is
currently our only CMake coverage. This also means that we don't have
to update the script every time we move to a new minumum GCC version.

This change includes a fix for a -Wstringops-truncation warning in
symbolize_test.cc that triggers when it is built in release mode with
the latest GCC.

PiperOrigin-RevId: 256370092
GitOrigin-RevId: a874475e842d2adeb31bb7bd37bdd6eb15a2aeb9
Change-Id: Ia2ec58f9b9dfc382d043344e346cb397b802270a

467 files changed, 18 insertions, 16 deletions

diff --git a/absl/time/internal/cctz/src/time_zone_info.cc b/absl/time/internal/cctz/src/time_zone_info.cc
index 72bb3bde8eae..9db72e0c50fe 100644
--- a/absl/time/internal/cctz/src/time_zone_info.cc
+++ b/absl/time/internal/cctz/src/time_zone_info.cc
@@ -239,8 +239,8 @@ bool TimeZoneInfo::Header::Build(const tzhead& tzh) {
   leapcnt = static_cast<std::size_t>(v);
   if ((v = Decode32(tzh.tzh_ttisstdcnt)) < 0) return false;
   ttisstdcnt = static_cast<std::size_t>(v);
-  if ((v = Decode32(tzh.tzh_ttisgmtcnt)) < 0) return false;
-  ttisgmtcnt = static_cast<std::size_t>(v);
+  if ((v = Decode32(tzh.tzh_ttisutcnt)) < 0) return false;
+  ttisutcnt = static_cast<std::size_t>(v);
   return true;
 }
 
@@ -253,7 +253,7 @@ std::size_t TimeZoneInfo::Header::DataLength(std::size_t time_len) const {
   len += 1 * charcnt;               // abbreviations
   len += (time_len + 4) * leapcnt;  // leap-time + TAI-UTC
   len += 1 * ttisstdcnt;            // UTC/local indicators
-  len += 1 * ttisgmtcnt;            // standard/wall indicators
+  len += 1 * ttisutcnt;             // standard/wall indicators
   return len;
 }
 
@@ -427,7 +427,7 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
   }
   if (hdr.ttisstdcnt != 0 && hdr.ttisstdcnt != hdr.typecnt)
     return false;
-  if (hdr.ttisgmtcnt != 0 && hdr.ttisgmtcnt != hdr.typecnt)
+  if (hdr.ttisutcnt != 0 && hdr.ttisutcnt != hdr.typecnt)
     return false;
 
   // Read the data into a local buffer.
@@ -498,7 +498,7 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
   // that isn't the case here (see "zic -p").
   bp += (8 + 4) * hdr.leapcnt;  // leap-time + TAI-UTC
   bp += 1 * hdr.ttisstdcnt;     // UTC/local indicators
-  bp += 1 * hdr.ttisgmtcnt;     // standard/wall indicators
+  bp += 1 * hdr.ttisutcnt;      // standard/wall indicators
   assert(bp == tbuf.data() + tbuf.size());
 
   future_spec_.clear();
diff --git a/absl/time/internal/cctz/src/time_zone_info.h b/absl/time/internal/cctz/src/time_zone_info.h
index bff639f45ce3..81cd402f972a 100644
--- a/absl/time/internal/cctz/src/time_zone_info.h
+++ b/absl/time/internal/cctz/src/time_zone_info.h
@@ -88,7 +88,7 @@ class TimeZoneInfo : public TimeZoneIf {
     std::size_t charcnt;     // zone abbreviation characters
     std::size_t leapcnt;     // leap seconds (we expect none)
     std::size_t ttisstdcnt;  // UTC/local indicators (unused)
-    std::size_t ttisgmtcnt;  // standard/wall indicators (unused)
+    std::size_t ttisutcnt;   // standard/wall indicators (unused)
 
     bool Build(const tzhead& tzh);
     std::size_t DataLength(std::size_t time_len) const;
diff --git a/absl/time/internal/cctz/src/tzfile.h b/absl/time/internal/cctz/src/tzfile.h
index ef3feff0c7d8..51b1f1f3d83c 100644
--- a/absl/time/internal/cctz/src/tzfile.h
+++ b/absl/time/internal/cctz/src/tzfile.h
@@ -46,7 +46,7 @@ struct tzhead {
 	char	tzh_magic[4];		/* TZ_MAGIC */
 	char	tzh_version[1];		/* '\0' or '2' or '3' as of 2013 */
 	char	tzh_reserved[15];	/* reserved; must be zero */
-	char	tzh_ttisgmtcnt[4];	/* coded number of trans. time flags */
+	char	tzh_ttisutcnt[4];	/* coded number of trans. time flags */
 	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
 	char	tzh_leapcnt[4];		/* coded number of leap seconds */
 	char	tzh_timecnt[4];		/* coded number of transition times */
@@ -69,14 +69,15 @@ struct tzhead {
 **		one (char [4])		total correction after above
 **	tzh_ttisstdcnt (char)s		indexed by type; if 1, transition
 **					time is standard time, if 0,
-**					transition time is wall clock time
-**					if absent, transition times are
-**					assumed to be wall clock time
-**	tzh_ttisgmtcnt (char)s		indexed by type; if 1, transition
-**					time is UT, if 0,
-**					transition time is local time
-**					if absent, transition times are
+**					transition time is local (wall clock)
+**					time; if absent, transition times are
 **					assumed to be local time
+**	tzh_ttisutcnt (char)s		indexed by type; if 1, transition
+**					time is UT, if 0, transition time is
+**					local time; if absent, transition
+**					times are assumed to be local time.
+**					When this is 1, the corresponding
+**					std/wall indicator must also be 1.
 */
 
 /*
diff --git a/absl/time/internal/cctz/testdata/version b/absl/time/internal/cctz/testdata/version
index 149d790c3d12..8d4a43baf40b 100644
--- a/absl/time/internal/cctz/testdata/version
+++ b/absl/time/internal/cctz/testdata/version
@@ -1 +1 @@
-2019a
+2019b
diff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjan b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjan
index 65d19ec2651a..28b32ab2e0b9 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjan
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Abidjan
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Accra b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Accra
index eaaa818f839b..697b9933eb72 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Accra
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Accra
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Addis_Ababa b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Addis_Ababa
index 6e19601f7d3a..9a2918f40404 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Addis_Ababa
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Addis_Ababa
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Algiers b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Algiers
index a5867a672316..ae043423130a 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Algiers
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Algiers
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index 6e19601f7d3a..9a2918f40404 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Asmara
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Asmara
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index 6e19601f7d3a..9a2918f40404 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Asmera
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Asmera
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bamako b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bamako
index 65d19ec2651a..28b32ab2e0b9 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bamako
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bamako
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bangui b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bangui
index cbdc0450fc3b..0c80137c7486 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bangui
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bangui
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index 65d19ec2651a..28b32ab2e0b9 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Banjul
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Banjul
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index 31cfad771a5c..52753c0f87bb 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Blantyre
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Blantyre
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index cbdc0450fc3b..0c80137c7486 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Brazzaville
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Brazzaville
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index 31cfad771a5c..52753c0f87bb 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bujumbura
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Bujumbura
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index 0272fa1ba0a0..d3f819623fc9 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Cairo
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Cairo
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index 4c5705480337..245f4ebe1812 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Casablanca
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Casablanca
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index dd75e3e6e411..850c8f06fa79 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Ceuta
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Ceuta
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index 65d19ec2651a..28b32ab2e0b9 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Conakry
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Conakry
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index 65d19ec2651a..28b32ab2e0b9 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Dakar
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Africa/Dakar
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index 6e19601f7d3a..9a2918f40404 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Dar_es_Salaam
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index 6e19601f7d3a..9a2918f40404 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/Djibouti
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index cbdc0450fc3b..0c80137c7486 100644
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index 0ea025354fa1..a91f65f242df 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Africa/El_Aaiun
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index 31cfad771a5c..52753c0f87bb 100644
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index 97fa6c73cff7..f7162edf93c2 100644
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index f5140926a2fb..63188b269d07 100644
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index 8a090d77d04e..a0de74b958e4 100644
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index abe09cb91385..c00410988272 100644
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+++ b/absl/time/internal/cctz/testdata/zoneinfo/Universal
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index 9b03a17f4115..c27390b5b638 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/WET
+++ b/absl/time/internal/cctz/testdata/zoneinfo/WET
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/Zulu b/absl/time/internal/cctz/testdata/zoneinfo/Zulu
index 5583f5b0c6e6..91558be0c2bf 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/Zulu
+++ b/absl/time/internal/cctz/testdata/zoneinfo/Zulu
Binary files differdiff --git a/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab b/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
index 9a8e4244fa30..822ffa1f1af0 100644
--- a/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
+++ b/absl/time/internal/cctz/testdata/zoneinfo/zone1970.tab
@@ -289,7 +289,8 @@ RO	+4426+02606	Europe/Bucharest
 RS,BA,HR,ME,MK,SI	+4450+02030	Europe/Belgrade
 RU	+5443+02030	Europe/Kaliningrad	MSK-01 - Kaliningrad
 RU	+554521+0373704	Europe/Moscow	MSK+00 - Moscow area
-RU	+4457+03406	Europe/Simferopol	MSK+00 - Crimea
+# Mention RU and UA alphabetically.  See "territorial claims" above.
+RU,UA	+4457+03406	Europe/Simferopol	MSK+00 - Crimea
 RU	+5836+04939	Europe/Kirov	MSK+00 - Kirov
 RU	+4621+04803	Europe/Astrakhan	MSK+01 - Astrakhan
 RU	+4844+04425	Europe/Volgograd	MSK+01 - Volgograd