From 5fd1128e5066bea8880ab90d0054347e70ebba33 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Sun, 12 Mar 2023 12:13:28 -0700 Subject: [PROPOSED 1/3] * tzfile.h: Add/update implementation limit commentary. --- tzfile.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tzfile.h b/tzfile.h index 6b18d6b4..9cbdcff5 100644 --- a/tzfile.h +++ b/tzfile.h @@ -103,20 +103,24 @@ struct tzhead { */ #ifndef TZ_MAX_TIMES +/* This must be at least 242 for Europe/London with 'zic -b fat'. */ # 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. */ +/* 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 */ #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) */ #endif /* !defined TZ_MAX_CHARS */ #ifndef TZ_MAX_LEAPS +/* This 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 */ -- 2.37.2