vendor/tzcode/tzcode2026avendor/tzcode

1 files changed, 9 insertions, 15 deletions

diff --git a/tzfile.h b/tzfile.h
index b00eb9e694ba..1941bc3b7693 100644
--- a/tzfile.h
+++ b/tzfile.h
@@ -17,16 +17,8 @@
 ** Thank you!
 */
 
-/*
-** Information about time zone files.
-*/
-
-#ifndef TZDEFRULES
-# define TZDEFRULES "posixrules"
-#endif /* !defined TZDEFRULES */
-
-
-/* See Internet RFC 9636 for more details about the following format.  */
+/* Information about time zone files.
+   See Internet RFC 9636 for more details about the following format.  */
 
 /*
 ** Each file begins with. . .
@@ -97,23 +89,25 @@ struct tzhead {
 */
 
 #ifndef TZ_MAX_TIMES
-/* This must be at least 242 for Europe/London with 'zic -b fat'.  */
+/* The following limit applies to localtime.c; zic has no such limit.
+   The limit must be at least 310 for Asia/Hebron with 'zic -b fat'.  */
 # define TZ_MAX_TIMES 2000
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
 /* This must be at least 18 for Europe/Vilnius with 'zic -b fat'.  */
-# define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
+# define TZ_MAX_TYPES 256 /* Limited to 256 by Internet RFC 9636.  */
 #endif /* !defined TZ_MAX_TYPES */
 
 #ifndef TZ_MAX_CHARS
 /* This must be at least 40 for America/Anchorage.  */
-# define TZ_MAX_CHARS 50	/* Maximum number of abbreviation characters */
-				/* (limited by what unsigned chars can hold) */
+# define TZ_MAX_CHARS 256	/* Maximum number of abbreviation characters */
+				/* (limited to 256 by Internet RFC 9636) */
 #endif /* !defined TZ_MAX_CHARS */
 
 #ifndef TZ_MAX_LEAPS
-/* This must be at least 27 for leap seconds from 1972 through mid-2023.
+/* The following limit applies to localtime.c; zic has no such limit.
+   The limit must be at least 27 for leap seconds from 1972 through mid-2023.
    There's a plan to discontinue leap seconds by 2035.  */
 # define TZ_MAX_LEAPS 50	/* Maximum number of leap second corrections */
 #endif /* !defined TZ_MAX_LEAPS */