| private.h (46c599340f187db577b9212ab18022f3c7380c68) | private.h (a979394afeb5c20fc58c5f5b005d51eb8f92f666) |
|---|---|
| 1/* Private header for tzdb code. */ 2 3#ifndef PRIVATE_H 4 5#define PRIVATE_H 6 7/* 8** This file is in the public domain, so clarified as of --- 5 unchanged lines hidden (view full) --- 14** There is no guarantee that it will remain unchanged, 15** or that it will remain at all. 16** Do NOT copy it to any system include directory. 17** Thank you! 18*/ 19 20/* PORT_TO_C89 means the code should work even if the underlying 21 compiler and library support only C89 plus C99's 'long long' | 1/* Private header for tzdb code. */ 2 3#ifndef PRIVATE_H 4 5#define PRIVATE_H 6 7/* 8** This file is in the public domain, so clarified as of --- 5 unchanged lines hidden (view full) --- 14** There is no guarantee that it will remain unchanged, 15** or that it will remain at all. 16** Do NOT copy it to any system include directory. 17** Thank you! 18*/ 19 20/* PORT_TO_C89 means the code should work even if the underlying 21 compiler and library support only C89 plus C99's 'long long' |
| 22 and perhaps a few other extensions to C89. SUPPORT_C89 means the 23 tzcode library should support C89 callers in addition to the usual 24 support for C99-and-later callers; however, C89 support can trigger 25 latent bugs in C99-and-later callers. These macros are obsolescent, 26 and the plan is to remove them along with any code needed only when 27 they are nonzero. A good time to do that might be in the year 2029 | 22 and perhaps a few other extensions to C89. 23 24 This macro is obsolescent, and the plan is to remove it along with 25 associated code. A good time to do that might be in the year 2029 |
| 28 because RHEL 7 (whose GCC defaults to C89) extended life cycle 29 support (ELS) is scheduled to end on 2028-06-30. */ 30#ifndef PORT_TO_C89 31# define PORT_TO_C89 0 32#endif | 26 because RHEL 7 (whose GCC defaults to C89) extended life cycle 27 support (ELS) is scheduled to end on 2028-06-30. */ 28#ifndef PORT_TO_C89 29# define PORT_TO_C89 0 30#endif |
| 31 32/* SUPPORT_C89 means the tzcode library should support C89 callers 33 in addition to the usual support for C99-and-later callers. 34 This defaults to 1 as POSIX requires, even though that can trigger 35 latent bugs in callers. */ |
|
| 33#ifndef SUPPORT_C89 | 36#ifndef SUPPORT_C89 |
| 34# define SUPPORT_C89 0 | 37# define SUPPORT_C89 1 |
| 35#endif 36 37#ifndef __STDC_VERSION__ 38# define __STDC_VERSION__ 0 39#endif 40 41/* Define true, false and bool if they don't work out of the box. */ 42#if PORT_TO_C89 && __STDC_VERSION__ < 199901 --- 21 unchanged lines hidden (view full) --- 64/* This string was in the Factory zone through version 2016f. */ 65#define GRANDPARENTED "Local time zone must be set--use tzsetup" 66 67/* 68** Defaults for preprocessor symbols. 69** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'. 70*/ 71 | 38#endif 39 40#ifndef __STDC_VERSION__ 41# define __STDC_VERSION__ 0 42#endif 43 44/* Define true, false and bool if they don't work out of the box. */ 45#if PORT_TO_C89 && __STDC_VERSION__ < 199901 --- 21 unchanged lines hidden (view full) --- 67/* This string was in the Factory zone through version 2016f. */ 68#define GRANDPARENTED "Local time zone must be set--use tzsetup" 69 70/* 71** Defaults for preprocessor symbols. 72** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'. 73*/ 74 |
| 72#ifndef HAVE_DECL_ASCTIME_R 73# define HAVE_DECL_ASCTIME_R 1 74#endif 75 | |
| 76#if !defined HAVE__GENERIC && defined __has_extension 77# if !__has_extension(c_generic_selections) 78# define HAVE__GENERIC 0 79# endif 80#endif 81/* _Generic is buggy in pre-4.9 GCC. */ 82#if !defined HAVE__GENERIC && defined __GNUC__ && !defined __STRICT_ANSI__ 83# define HAVE__GENERIC (4 < __GNUC__ + (9 <= __GNUC_MINOR__)) --- 147 unchanged lines hidden (view full) --- 231#if HAVE_GETTEXT 232# include <libintl.h> 233#endif /* HAVE_GETTEXT */ 234 235#if HAVE_UNISTD_H 236# include <unistd.h> /* for R_OK, and other POSIX goodness */ 237#endif /* HAVE_UNISTD_H */ 238 | 75#if !defined HAVE__GENERIC && defined __has_extension 76# if !__has_extension(c_generic_selections) 77# define HAVE__GENERIC 0 78# endif 79#endif 80/* _Generic is buggy in pre-4.9 GCC. */ 81#if !defined HAVE__GENERIC && defined __GNUC__ && !defined __STRICT_ANSI__ 82# define HAVE__GENERIC (4 < __GNUC__ + (9 <= __GNUC_MINOR__)) --- 147 unchanged lines hidden (view full) --- 230#if HAVE_GETTEXT 231# include <libintl.h> 232#endif /* HAVE_GETTEXT */ 233 234#if HAVE_UNISTD_H 235# include <unistd.h> /* for R_OK, and other POSIX goodness */ 236#endif /* HAVE_UNISTD_H */ 237 |
| 238/* SUPPORT_POSIX2008 means the tzcode library should support 239 POSIX.1-2017-and-earlier callers in addition to the usual support for 240 POSIX.1-2024-and-later callers; however, this can be 241 incompatible with POSIX.1-2024-and-later callers. 242 This macro is obsolescent, and the plan is to remove it 243 along with any code needed only when it is nonzero. 244 A good time to do that might be in the year 2034. 245 This macro's name is SUPPORT_POSIX2008 because _POSIX_VERSION == 200809 246 in POSIX.1-2017, a minor revision of POSIX.1-2008. */ 247#ifndef SUPPORT_POSIX2008 248# if defined _POSIX_VERSION && _POSIX_VERSION <= 200809 249# define SUPPORT_POSIX2008 1 250# else 251# define SUPPORT_POSIX2008 0 252# endif 253#endif 254 255#ifndef HAVE_DECL_ASCTIME_R 256# if SUPPORT_POSIX2008 257# define HAVE_DECL_ASCTIME_R 1 258# else 259# define HAVE_DECL_ASCTIME_R 0 260# endif 261#endif 262 |
|
| 239#ifndef HAVE_STRFTIME_L 240# if _POSIX_VERSION < 200809 241# define HAVE_STRFTIME_L 0 242# else 243# define HAVE_STRFTIME_L 1 244# endif 245#endif 246 --- 208 unchanged lines hidden (view full) --- 455# define ckd_mul(r, a, b) __builtin_mul_overflow(a, b, r) 456# endif 457#elif 7 <= __GNUC__ 458# define ckd_add(r, a, b) __builtin_add_overflow(a, b, r) 459# define ckd_sub(r, a, b) __builtin_sub_overflow(a, b, r) 460# define ckd_mul(r, a, b) __builtin_mul_overflow(a, b, r) 461#endif 462 | 263#ifndef HAVE_STRFTIME_L 264# if _POSIX_VERSION < 200809 265# define HAVE_STRFTIME_L 0 266# else 267# define HAVE_STRFTIME_L 1 268# endif 269#endif 270 --- 208 unchanged lines hidden (view full) --- 479# define ckd_mul(r, a, b) __builtin_mul_overflow(a, b, r) 480# endif 481#elif 7 <= __GNUC__ 482# define ckd_add(r, a, b) __builtin_add_overflow(a, b, r) 483# define ckd_sub(r, a, b) __builtin_sub_overflow(a, b, r) 484# define ckd_mul(r, a, b) __builtin_mul_overflow(a, b, r) 485#endif 486 |
| 463#if 3 <= __GNUC__ 464# define ATTRIBUTE_MALLOC __attribute__((malloc)) 465# define ATTRIBUTE_FORMAT(spec) __attribute__((format spec)) 466#else 467# define ATTRIBUTE_MALLOC /* empty */ 468# define ATTRIBUTE_FORMAT(spec) /* empty */ 469#endif 470 | |
| 471#if (defined __has_c_attribute \ 472 && (202311 <= __STDC_VERSION__ || !defined __STRICT_ANSI__)) 473# define HAVE___HAS_C_ATTRIBUTE true 474#else 475# define HAVE___HAS_C_ATTRIBUTE false 476#endif 477 478#if HAVE___HAS_C_ATTRIBUTE --- 51 unchanged lines hidden (view full) --- 530#endif 531 532#if HAVE___HAS_C_ATTRIBUTE 533# if __has_c_attribute(reproducible) 534# define ATTRIBUTE_REPRODUCIBLE [[reproducible]] 535# endif 536#endif 537#ifndef ATTRIBUTE_REPRODUCIBLE | 487#if (defined __has_c_attribute \ 488 && (202311 <= __STDC_VERSION__ || !defined __STRICT_ANSI__)) 489# define HAVE___HAS_C_ATTRIBUTE true 490#else 491# define HAVE___HAS_C_ATTRIBUTE false 492#endif 493 494#if HAVE___HAS_C_ATTRIBUTE --- 51 unchanged lines hidden (view full) --- 546#endif 547 548#if HAVE___HAS_C_ATTRIBUTE 549# if __has_c_attribute(reproducible) 550# define ATTRIBUTE_REPRODUCIBLE [[reproducible]] 551# endif 552#endif 553#ifndef ATTRIBUTE_REPRODUCIBLE |
| 538# if 3 <= __GNUC__ 539# define ATTRIBUTE_REPRODUCIBLE __attribute__((pure)) 540# else 541# define ATTRIBUTE_REPRODUCIBLE /* empty */ 542# endif | 554# define ATTRIBUTE_REPRODUCIBLE /* empty */ |
| 543#endif 544 | 555#endif 556 |
| 545#if HAVE___HAS_C_ATTRIBUTE 546# if __has_c_attribute(unsequenced) 547# define ATTRIBUTE_UNSEQUENCED [[unsequenced]] 548# endif | 557/* GCC attributes that are useful in tzcode. 558 __attribute__((pure)) is stricter than [[reproducible]], 559 so the latter is an adequate substitute in non-GCC C23 platforms. */ 560#if __GNUC__ < 3 561# define ATTRIBUTE_FORMAT(spec) /* empty */ 562# define ATTRIBUTE_PURE ATTRIBUTE_REPRODUCIBLE 563#else 564# define ATTRIBUTE_FORMAT(spec) __attribute__((format spec)) 565# define ATTRIBUTE_PURE __attribute__((pure)) |
| 549#endif | 566#endif |
| 550#ifndef ATTRIBUTE_UNSEQUENCED 551# if 3 <= __GNUC__ 552# define ATTRIBUTE_UNSEQUENCED __attribute__((const)) 553# else 554# define ATTRIBUTE_UNSEQUENCED /* empty */ 555# endif | 567 568/* Avoid GCC bug 114833 <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114833>. 569 Remove this macro and its uses when the bug is fixed in a GCC release, 570 because only the latest GCC matters for $(GCC_DEBUG_FLAGS). */ 571#ifdef GCC_LINT 572# define ATTRIBUTE_PURE_114833 ATTRIBUTE_PURE 573#else 574# define ATTRIBUTE_PURE_114833 /* empty */ |
| 556#endif 557 558#if (__STDC_VERSION__ < 199901 && !defined restrict \ 559 && (PORT_TO_C89 || defined _MSC_VER)) 560# define restrict /* empty */ 561#endif 562 563/* --- 35 unchanged lines hidden (view full) --- 599#endif 600 601#if TZ_TIME_T 602 603typedef time_tz tz_time_t; 604 605# undef asctime 606# define asctime tz_asctime | 575#endif 576 577#if (__STDC_VERSION__ < 199901 && !defined restrict \ 578 && (PORT_TO_C89 || defined _MSC_VER)) 579# define restrict /* empty */ 580#endif 581 582/* --- 35 unchanged lines hidden (view full) --- 618#endif 619 620#if TZ_TIME_T 621 622typedef time_tz tz_time_t; 623 624# undef asctime 625# define asctime tz_asctime |
| 607# undef asctime_r 608# define asctime_r tz_asctime_r | |
| 609# undef ctime 610# define ctime tz_ctime | 626# undef ctime 627# define ctime tz_ctime |
| 611# undef ctime_r 612# define ctime_r tz_ctime_r | |
| 613# undef difftime 614# define difftime tz_difftime 615# undef gmtime 616# define gmtime tz_gmtime 617# undef gmtime_r 618# define gmtime_r tz_gmtime_r 619# undef localtime 620# define localtime tz_localtime --- 30 unchanged lines hidden (view full) --- 651# undef timeoff 652# define timeoff tz_timeoff 653# undef tzalloc 654# define tzalloc tz_tzalloc 655# undef tzfree 656# define tzfree tz_tzfree 657# undef tzset 658# define tzset tz_tzset | 628# undef difftime 629# define difftime tz_difftime 630# undef gmtime 631# define gmtime tz_gmtime 632# undef gmtime_r 633# define gmtime_r tz_gmtime_r 634# undef localtime 635# define localtime tz_localtime --- 30 unchanged lines hidden (view full) --- 666# undef timeoff 667# define timeoff tz_timeoff 668# undef tzalloc 669# define tzalloc tz_tzalloc 670# undef tzfree 671# define tzfree tz_tzfree 672# undef tzset 673# define tzset tz_tzset |
| 674# if SUPPORT_POSIX2008 675# undef asctime_r 676# define asctime_r tz_asctime_r 677# undef ctime_r 678# define ctime_r tz_ctime_r 679# endif |
|
| 659# if HAVE_STRFTIME_L 660# undef strftime_l 661# define strftime_l tz_strftime_l 662# endif 663# if HAVE_TZNAME 664# undef tzname 665# define tzname tz_tzname 666# endif --- 9 unchanged lines hidden (view full) --- 676# endif 677 678# if __STDC_VERSION__ < 202311 679# define DEPRECATED_IN_C23 /* empty */ 680# else 681# define DEPRECATED_IN_C23 ATTRIBUTE_DEPRECATED 682# endif 683DEPRECATED_IN_C23 char *asctime(struct tm const *); | 680# if HAVE_STRFTIME_L 681# undef strftime_l 682# define strftime_l tz_strftime_l 683# endif 684# if HAVE_TZNAME 685# undef tzname 686# define tzname tz_tzname 687# endif --- 9 unchanged lines hidden (view full) --- 697# endif 698 699# if __STDC_VERSION__ < 202311 700# define DEPRECATED_IN_C23 /* empty */ 701# else 702# define DEPRECATED_IN_C23 ATTRIBUTE_DEPRECATED 703# endif 704DEPRECATED_IN_C23 char *asctime(struct tm const *); |
| 684char *asctime_r(struct tm const *restrict, char *restrict); | |
| 685DEPRECATED_IN_C23 char *ctime(time_t const *); | 705DEPRECATED_IN_C23 char *ctime(time_t const *); |
| 706#if SUPPORT_POSIX2008 707char *asctime_r(struct tm const *restrict, char *restrict); |
|
| 686char *ctime_r(time_t const *, char *); | 708char *ctime_r(time_t const *, char *); |
| 687ATTRIBUTE_UNSEQUENCED double difftime(time_t, time_t); | 709#endif 710double difftime(time_t, time_t); |
| 688size_t strftime(char *restrict, size_t, char const *restrict, 689 struct tm const *restrict); 690# if HAVE_STRFTIME_L 691size_t strftime_l(char *restrict, size_t, char const *restrict, 692 struct tm const *restrict, locale_t); 693# endif 694struct tm *gmtime(time_t const *); 695struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); --- 14 unchanged lines hidden (view full) --- 710# else 711# define HAVE_DECL_TIMEGM false 712# endif 713#endif 714#if !HAVE_DECL_TIMEGM && !defined timegm 715time_t timegm(struct tm *); 716#endif 717 | 711size_t strftime(char *restrict, size_t, char const *restrict, 712 struct tm const *restrict); 713# if HAVE_STRFTIME_L 714size_t strftime_l(char *restrict, size_t, char const *restrict, 715 struct tm const *restrict, locale_t); 716# endif 717struct tm *gmtime(time_t const *); 718struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); --- 14 unchanged lines hidden (view full) --- 733# else 734# define HAVE_DECL_TIMEGM false 735# endif 736#endif 737#if !HAVE_DECL_TIMEGM && !defined timegm 738time_t timegm(struct tm *); 739#endif 740 |
| 718#if !HAVE_DECL_ASCTIME_R && !defined asctime_r | 741#if !HAVE_DECL_ASCTIME_R && !defined asctime_r && SUPPORT_POSIX2008 |
| 719extern char *asctime_r(struct tm const *restrict, char *restrict); 720#endif 721 722#ifndef HAVE_DECL_ENVIRON 723# if defined environ || defined __USE_GNU 724# define HAVE_DECL_ENVIRON 1 725# else 726# define HAVE_DECL_ENVIRON 0 --- 71 unchanged lines hidden (view full) --- 798typedef struct state *timezone_t; 799struct tm *localtime_rz(timezone_t restrict, time_t const *restrict, 800 struct tm *restrict); 801time_t mktime_z(timezone_t restrict, struct tm *restrict); 802timezone_t tzalloc(char const *); 803void tzfree(timezone_t); 804# if STD_INSPIRED 805# if TZ_TIME_T || !defined posix2time_z | 742extern char *asctime_r(struct tm const *restrict, char *restrict); 743#endif 744 745#ifndef HAVE_DECL_ENVIRON 746# if defined environ || defined __USE_GNU 747# define HAVE_DECL_ENVIRON 1 748# else 749# define HAVE_DECL_ENVIRON 0 --- 71 unchanged lines hidden (view full) --- 821typedef struct state *timezone_t; 822struct tm *localtime_rz(timezone_t restrict, time_t const *restrict, 823 struct tm *restrict); 824time_t mktime_z(timezone_t restrict, struct tm *restrict); 825timezone_t tzalloc(char const *); 826void tzfree(timezone_t); 827# if STD_INSPIRED 828# if TZ_TIME_T || !defined posix2time_z |
| 806ATTRIBUTE_REPRODUCIBLE time_t posix2time_z(timezone_t, time_t); | 829ATTRIBUTE_PURE time_t posix2time_z(timezone_t, time_t); |
| 807# endif 808# if TZ_TIME_T || !defined time2posix_z | 830# endif 831# if TZ_TIME_T || !defined time2posix_z |
| 809ATTRIBUTE_REPRODUCIBLE time_t time2posix_z(timezone_t, time_t); | 832ATTRIBUTE_PURE time_t time2posix_z(timezone_t, time_t); |
| 810# endif 811# endif 812#endif 813 814/* 815** Finally, some convenience items. 816*/ 817 --- 155 unchanged lines hidden (view full) --- 973#define SECSPERDAY ((int_fast32_t) SECSPERHOUR * HOURSPERDAY) 974 975#define DAYSPERREPEAT ((int_fast32_t) 400 * 365 + 100 - 4 + 1) 976#define SECSPERREPEAT ((int_fast64_t) DAYSPERREPEAT * SECSPERDAY) 977#define AVGSECSPERYEAR (SECSPERREPEAT / YEARSPERREPEAT) 978 979/* How many years to generate (in zic.c) or search through (in localtime.c). 980 This is two years larger than the obvious 400, to avoid edge cases. | 833# endif 834# endif 835#endif 836 837/* 838** Finally, some convenience items. 839*/ 840 --- 155 unchanged lines hidden (view full) --- 996#define SECSPERDAY ((int_fast32_t) SECSPERHOUR * HOURSPERDAY) 997 998#define DAYSPERREPEAT ((int_fast32_t) 400 * 365 + 100 - 4 + 1) 999#define SECSPERREPEAT ((int_fast64_t) DAYSPERREPEAT * SECSPERDAY) 1000#define AVGSECSPERYEAR (SECSPERREPEAT / YEARSPERREPEAT) 1001 1002/* How many years to generate (in zic.c) or search through (in localtime.c). 1003 This is two years larger than the obvious 400, to avoid edge cases. |
| 981 E.g., suppose a non-POSIX.1-2017 rule applies from 2012 on with transitions 982 in March and September, plus one-off transitions in November 2013. | 1004 E.g., suppose a rule applies from 2012 on with transitions 1005 in March and September, plus one-off transitions in November 2013, 1006 and suppose the rule cannot be expressed as a proleptic TZ string. |
| 983 If zic looked only at the last 400 years, it would set max_year=2413, 984 with the intent that the 400 years 2014 through 2413 will be repeated. 985 The last transition listed in the tzfile would be in 2413-09, 986 less than 400 years after the last one-off transition in 2013-11. 987 Two years is not overkill for localtime.c, as a one-year bump 988 would mishandle 2023d's America/Ciudad_Juarez for November 2422. */ 989enum { years_of_observations = YEARSPERREPEAT + 2 }; 990 --- 49 unchanged lines hidden --- | 1007 If zic looked only at the last 400 years, it would set max_year=2413, 1008 with the intent that the 400 years 2014 through 2413 will be repeated. 1009 The last transition listed in the tzfile would be in 2413-09, 1010 less than 400 years after the last one-off transition in 2013-11. 1011 Two years is not overkill for localtime.c, as a one-year bump 1012 would mishandle 2023d's America/Ciudad_Juarez for November 2422. */ 1013enum { years_of_observations = YEARSPERREPEAT + 2 }; 1014 --- 49 unchanged lines hidden --- |