Export of internal Abseil changes

--
20b3acaff75d05315f272747956b01405adccafb by Greg Falcon <gfalcon@google.com>:

Re-import of CCTZ from GitHub, with new ABSL_NAMESPACE_ transform applied.

PiperOrigin-RevId: 285564474

--
4d9e3fcabcea33c8b0b69f094ad2eddc0fa19557 by Derek Mauro <dmauro@google.com>:

Moves the disabling of a warning to before the function begins.

MSVC apparently requires this for warnings in the range 4700-4999.
https://docs.microsoft.com/en-us/cpp/preprocessor/warning?redirectedfrom=MSDN&view=vs-2019

PiperOrigin-RevId: 285516232

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4a060cbeda76e89693c50276ae5b62cbf0fff39a by Derek Mauro <dmauro@google.com>:

MSVC: Fixes uniform_real_distribution_test in opt mode

Disables a constant arithmetic overflow warning in a test that tests
the behavior on overflow. This should be tested because a user might
have this warning disabled.

PiperOrigin-RevId: 285452242

--
548ab2f4cbe59bd6f6bf493af4f9ea765c4fa949 by Andy Soffer <asoffer@google.com>:

Release absl::bind_front, a C++11-compliant work-alike type for the C++20
std::bind_front.

PiperOrigin-RevId: 285247872
GitOrigin-RevId: 20b3acaff75d05315f272747956b01405adccafb
Change-Id: I00fe45939246cba9bfc7be375d67787d2eb57cd3

1 files changed, 22 insertions, 23 deletions

diff --git a/absl/time/internal/cctz/src/tzfile.h b/absl/time/internal/cctz/src/tzfile.h
index 51b1f1f..1ed55e0 100644
--- a/absl/time/internal/cctz/src/tzfile.h
+++ b/absl/time/internal/cctz/src/tzfile.h
@@ -22,36 +22,35 @@
 */
 
 #ifndef TZDIR
-#define TZDIR	"/usr/share/zoneinfo" /* Time zone object file directory */
-#endif /* !defined TZDIR */
+#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
+#endif                              /* !defined TZDIR */
 
 #ifndef TZDEFAULT
-#define TZDEFAULT	"/etc/localtime"
+#define TZDEFAULT "/etc/localtime"
 #endif /* !defined TZDEFAULT */
 
 #ifndef TZDEFRULES
-#define TZDEFRULES	"posixrules"
+#define TZDEFRULES "posixrules"
 #endif /* !defined TZDEFRULES */
 
-
 /* See Internet RFC 8536 for more details about the following format.  */
 
 /*
 ** Each file begins with. . .
 */
 
-#define	TZ_MAGIC	"TZif"
+#define TZ_MAGIC "TZif"
 
 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_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 */
-	char	tzh_typecnt[4];		/* coded number of local time types */
-	char	tzh_charcnt[4];		/* coded number of abbr. chars */
+  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_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 */
+  char tzh_typecnt[4];    /* coded number of local time types */
+  char tzh_charcnt[4];    /* coded number of abbr. chars */
 };
 
 /*
@@ -103,21 +102,21 @@ struct tzhead {
 */
 
 #ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES	2000
+#define TZ_MAX_TIMES 2000
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
 /* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
-#define TZ_MAX_TYPES	256 /* Limited by what (unsigned char)'s can hold */
-#endif /* !defined TZ_MAX_TYPES */
+#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
+#endif                   /* !defined TZ_MAX_TYPES */
 
 #ifndef TZ_MAX_CHARS
-#define TZ_MAX_CHARS	50	/* Maximum number of abbreviation characters */
-				/* (limited by what unsigned chars can hold) */
-#endif /* !defined TZ_MAX_CHARS */
+#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
+                        /* (limited by what unsigned chars can hold) */
+#endif                  /* !defined TZ_MAX_CHARS */
 
 #ifndef TZ_MAX_LEAPS
-#define TZ_MAX_LEAPS	50	/* Maximum number of leap second corrections */
-#endif /* !defined TZ_MAX_LEAPS */
+#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
+#endif                  /* !defined TZ_MAX_LEAPS */
 
 #endif /* !defined TZFILE_H */