Export of internal Abseil changes

--
f6d1ddef9a38e3fb8492181bf1a7a006b7f2145d by Abseil Team <absl-team@google.com>:

Update the implementation of `operator<<` in Status to use `ToString(StatusToStringMode::kWithEverything)`

PiperOrigin-RevId: 380740880

--
5f13b20c4b85c1c6e94b69c74f80f8f3f3941747 by Derek Mauro <dmauro@google.com>:

Update Docker images

This also disables the Clang/libstdc++/C++20 combo as it seems that
the latest libstdc++ is relying on C++20 Concepts to a greater extent
than Clang supports.

PiperOrigin-RevId: 380714572

--
f8f4dee12cfd02559bf741ad6b06f10ac0c48c73 by Abseil Team <absl-team@google.com>:

Fix shadow member warnings in randen_hwaes.cc

These happen when attempting to use abseil in github.com/google/benchmark. The project sets -Wshadow.

The warning is due to the name of the Vector128 ctor parameter. Using v instead, which I see used elsewhere (e.g. line 290)

PiperOrigin-RevId: 380704197

--
2e1a09e9cb1239485715acb4828d9b4799fcfbb5 by Tom Manshreck <shreck@google.com>:

Add more precise documentation for AbslParseFlag declarations in the Time API

PiperOrigin-RevId: 380649107

--
153e5f7a960c03e4161c03737a0ff18ba377ff73 by Evan Brown <ezb@google.com>:

Make the number of control bytes a constant.

We use a constexpr function because we need to support C++11, which doesn't have inline variables.

The motivation is to avoid future bugs where the number changes and we forget to update all the places it's used.

This CL should be a no-op.

PiperOrigin-RevId: 380253975
GitOrigin-RevId: f6d1ddef9a38e3fb8492181bf1a7a006b7f2145d
Change-Id: Id584138f898bf3ebef95fabcf48e41098c4db954

1 files changed, 24 insertions, 4 deletions

diff --git a/absl/time/time.h b/absl/time/time.h
index 48982df4..7fa0f5c6 100644
--- a/absl/time/time.h
+++ b/absl/time/time.h
@@ -547,10 +547,20 @@ inline std::ostream& operator<<(std::ostream& os, Duration d) {
 // `ZeroDuration()`. Parses "inf" and "-inf" as +/- `InfiniteDuration()`.
 bool ParseDuration(absl::string_view dur_string, Duration* d);
 
-// Support for flag values of type Duration. Duration flags must be specified
-// in a format that is valid input for absl::ParseDuration().
+// AbslParseFlag()
+//
+// Parses a command-line flag string representation `text` into a a Duration
+// value. Duration flags must be specified in a format that is valid input for
+// `absl::ParseDuration()`.
 bool AbslParseFlag(absl::string_view text, Duration* dst, std::string* error);
+
+
+// AbslUnparseFlag()
+//
+// Unparses a Duration value into a command-line string representation using
+// the format specified by `absl::ParseDuration()`.
 std::string AbslUnparseFlag(Duration d);
+
 ABSL_DEPRECATED("Use AbslParseFlag() instead.")
 bool ParseFlag(const std::string& text, Duration* dst, std::string* error);
 ABSL_DEPRECATED("Use AbslUnparseFlag() instead.")
@@ -813,8 +823,12 @@ Time FromChrono(const std::chrono::system_clock::time_point& tp);
 //   // tp == std::chrono::system_clock::from_time_t(123);
 std::chrono::system_clock::time_point ToChronoTime(Time);
 
-// Support for flag values of type Time. Time flags must be specified in a
-// format that matches absl::RFC3339_full. For example:
+// AbslParseFlag()
+//
+// Parses the command-line flag string representation `text` into a Time value.
+// Time flags must be specified in a format that matches absl::RFC3339_full.
+//
+// For example:
 //
 //   --start_time=2016-01-02T03:04:05.678+08:00
 //
@@ -824,7 +838,13 @@ std::chrono::system_clock::time_point ToChronoTime(Time);
 // seconds/milliseconds/etc from the Unix epoch, use an absl::Duration flag
 // and add that duration to absl::UnixEpoch() to get an absl::Time.
 bool AbslParseFlag(absl::string_view text, Time* t, std::string* error);
+
+// AbslUnparseFlag()
+//
+// Unparses a Time value into a command-line string representation using
+// the format specified by `absl::ParseTime()`.
 std::string AbslUnparseFlag(Time t);
+
 ABSL_DEPRECATED("Use AbslParseFlag() instead.")
 bool ParseFlag(const std::string& text, Time* t, std::string* error);
 ABSL_DEPRECATED("Use AbslUnparseFlag() instead.")