@@ -66,6 +66,7 @@ SRC_URI = "${BASEURI} \
file://0024-Avoid-hardcoded-build-paths-into-ppc-libgcc.patch \
file://0025-gcc-testsuite-tweaks-for-mips-OE.patch \
file://0027-Fix-gcc-vect-module-testcases.patch \
+ file://file://gcc.git-ab884fffe3fc82a710bea66ad651720d71c938b8.patch \
"
SRC_URI[sha256sum] = "0845e9621c9543a13f484e94584a49ffc0129970e9914624235fc1d061a0c083"
new file mode 100644
@@ -0,0 +1,549 @@
+From ab884fffe3fc82a710bea66ad651720d71c938b8 Mon Sep 17 00:00:00 2001
+From: Jonathan Wakely <jwakely@redhat.com>
+Date: Tue, 30 Apr 2024 09:52:13 +0100
+Subject: [PATCH] libstdc++: Fix std::chrono::tzdb to work with vanguard format
+
+I found some issues in the std::chrono::tzdb parser by testing the
+tzdata "vanguard" format, which uses new features that aren't enabled in
+the "main" and "rearguard" data formats.
+
+Since 2024a the keyword "minimum" is no longer valid for the FROM and TO
+fields in a Rule line, which means that "m" is now a valid abbreviation
+for "maximum". Previously we expected either "mi" or "ma". For backwards
+compatibility, a FROM field beginning with "mi" is still supported and
+is treated as 1900. The "maximum" keyword is only allowed in TO now,
+because it makes no sense in FROM. To support these changes the
+minmax_year and minmax_year2 classes for parsing FROM and TO are
+replaced with a single years_from_to class that reads both fields.
+
+The vanguard format makes use of %z in Zone FORMAT fields, which caused
+an exception to be thrown from ZoneInfo::set_abbrev because no % or /
+characters were expected when a Zone doesn't use a named Rule. The
+ZoneInfo::to(sys_info&) function now uses format_abbrev_str to replace
+any %z with the current offset. Although format_abbrev_str also checks
+for %s and STD/DST formats, those only make sense when a named Rule is
+in effect, so won't occur when ZoneInfo::to(sys_info&) is used.
+
+Since making this change on trunk, the tzdata-2024b release started
+using %z in the main format, not just vanguard. This makes a backport to
+release branches necessary (see PR 116657).
+
+This change also implements a feature that has always been missing from
+time_zone::_M_get_sys_info: finding the Rule that is active before the
+specified time point, so that we can correctly handle %s in the FORMAT
+for the first new sys_info that gets created. This requires implementing
+a poorly documented feature of zic, to get the LETTERS field from a
+later transition, as described at
+https://mm.icann.org/pipermail/tz/2024-April/058891.html
+In order for this to work we need to be able to distinguish an empty
+letters field (as used by CE%sT where the variable part is either empty
+or "S") from "the letters field is not known for this transition". The
+tzdata file uses "-" for an empty letters field, which libstdc++ was
+previously replacing with "" when the Rule was parsed. Instead, we now
+preserve the "-" in the Rule object, so that "" can be used for the case
+where we don't know the letters (and so need to decide it).
+
+(cherry picked from commit 0ca8d56f2085715f27ee536c6c344bc47af49cdd)
+
+Upstream-Status: Backport [https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=5ceea2ac106d6dd1aa8175670b15a801316cf1c9]
+
+Signed-off-by: Markus Volk <f_l_k@t-online.de>
+---
+ libstdc++-v3/src/c++20/tzdb.cc | 265 +++++++++++-------
+ .../std/time/time_zone/sys_info_abbrev.cc | 106 +++++++
+ libstdc++-v3/testsuite/std/time/tzdb/1.cc | 6 +-
+ 3 files changed, 274 insertions(+), 103 deletions(-)
+ create mode 100644 libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
+
+diff --git a/libstdc++-v3/src/c++20/tzdb.cc b/libstdc++-v3/src/c++20/tzdb.cc
+index c7c7cc9deee6..7e8cce7ce8cf 100644
+--- a/libstdc++-v3/src/c++20/tzdb.cc
++++ b/libstdc++-v3/src/c++20/tzdb.cc
+@@ -342,51 +342,103 @@ namespace std::chrono
+ friend istream& operator>>(istream&, on_day&);
+ };
+
+- // Wrapper for chrono::year that reads a year, or one of the keywords
+- // "minimum" or "maximum", or an unambiguous prefix of a keyword.
+- struct minmax_year
++ // Wrapper for two chrono::year values, which reads the FROM and TO
++ // fields of a Rule line. The FROM field is a year and TO is a year or
++ // one of the keywords "maximum" or "only" (or an abbreviation of those).
++ // For backwards compatibility, the keyword "minimum" is recognized
++ // for FROM and interpreted as 1900.
++ struct years_from_to
+ {
+- year& y;
++ year& from;
++ year& to;
+
+- friend istream& operator>>(istream& in, minmax_year&& y)
++ friend istream& operator>>(istream& in, years_from_to&& yy)
+ {
+- if (ws(in).peek() == 'm') // keywords "minimum" or "maximum"
++ string s;
++ auto c = ws(in).peek();
++ if (c == 'm') [[unlikely]] // keyword "minimum"
+ {
+- string s;
+- in >> s; // extract the rest of the word, but only look at s[1]
+- if (s[1] == 'a')
+- y.y = year::max();
+- else if (s[1] == 'i')
+- y.y = year::min();
+- else
+- in.setstate(ios::failbit);
++ in >> s; // extract the rest of the word
++ yy.from = year(1900);
++ }
++ else if (int num = 0; in >> num) [[likely]]
++ yy.from = year{num};
++
++ c = ws(in).peek();
++ if (c == 'm') // keyword "maximum"
++ {
++ in >> s; // extract the rest of the word
++ yy.to = year::max();
++ }
++ else if (c == 'o') // keyword "only"
++ {
++ in >> s; // extract the rest of the word
++ yy.to = yy.from;
+ }
+ else if (int num = 0; in >> num)
+- y.y = year{num};
++ yy.to = year{num};
++
+ return in;
+ }
+ };
+
+- // As above for minmax_year, but also supports the keyword "only",
+- // meaning that the TO year is the same as the FROM year.
+- struct minmax_year2
++ bool
++ select_std_or_dst_abbrev(string& abbrev, minutes save)
+ {
+- minmax_year to;
+- year from;
++ if (size_t pos = abbrev.find('/'); pos != string::npos)
++ {
++ // Select one of "STD/DST" for standard or daylight.
++ if (save == 0min)
++ abbrev.erase(pos);
++ else
++ abbrev.erase(0, pos + 1);
++ return true;
++ }
++ return false;
++ }
+
+- friend istream& operator>>(istream& in, minmax_year2&& y)
+- {
+- if (ws(in).peek() == 'o') // keyword "only"
+- {
+- string s;
+- in >> s; // extract the whole keyword
+- y.to.y = y.from;
+- }
+- else
+- in >> std::move(y.to);
+- return in;
+- }
+- };
++ // Set the sys_info::abbrev string by expanding any placeholders.
++ void
++ format_abbrev_str(sys_info& info, string_view letters = {})
++ {
++ if (size_t pos = info.abbrev.find('%'); pos != string::npos)
++ {
++ if (info.abbrev[pos + 1] == 's')
++ {
++ // Expand "%s" to the variable part, given by Rule::letters.
++ if (letters == "-")
++ info.abbrev.erase(pos, 2);
++ else
++ info.abbrev.replace(pos, 2, letters);
++ }
++ else if (info.abbrev[pos + 1] == 'z')
++ {
++ // Expand "%z" to the UT offset as +/-hh, +/-hhmm, or +/-hhmmss.
++ hh_mm_ss<seconds> t(info.offset);
++ string z(1, "+-"[t.is_negative()]);
++ long val = t.hours().count();
++ int digits = 2;
++ if (int m = t.minutes().count())
++ {
++ digits = 4;
++ val *= 100;
++ val += m;
++ if (int s = t.seconds().count())
++ {
++ digits = 6;
++ val *= 100;
++ val += s;
++ }
++ }
++ auto sval = std::to_string(val);
++ z += string(digits - sval.size(), '0');
++ z += sval;
++ info.abbrev.replace(pos, 2, z);
++ }
++ }
++ else
++ select_std_or_dst_abbrev(info.abbrev, info.save);
++ }
+
+ // A time zone information record.
+ // Zone NAME STDOFF RULES FORMAT [UNTIL]
+@@ -462,6 +514,7 @@ namespace std::chrono
+ info.offset = offset();
+ info.save = minutes(m_save);
+ info.abbrev = format();
++ format_abbrev_str(info); // expand %z
+ return true;
+ }
+
+@@ -469,12 +522,9 @@ namespace std::chrono
+ friend class time_zone;
+
+ void
+- set_abbrev(const string& abbrev)
++ set_abbrev(string abbrev)
+ {
+- // In practice, the FORMAT field never needs expanding here.
+- if (abbrev.find_first_of("/%") != abbrev.npos)
+- __throw_runtime_error("std::chrono::time_zone: invalid data");
+- m_buf = abbrev;
++ m_buf = std::move(abbrev);
+ m_pos = 0;
+ m_expanded = true;
+ }
+@@ -544,9 +594,7 @@ namespace std::chrono
+
+ // Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+
+- in >> quoted(rule.name)
+- >> minmax_year{rule.from}
+- >> minmax_year2{rule.to, rule.from};
++ in >> quoted(rule.name) >> years_from_to{rule.from, rule.to};
+
+ if (char type; in >> type && type != '-')
+ in.setstate(ios::failbit);
+@@ -557,7 +605,7 @@ namespace std::chrono
+ if (save_time.indicator != at_time::Wall)
+ {
+ // We don't actually store the save_time.indicator, because we
+- // assume that it's always deducable from the actual offset value.
++ // assume that it's always deducible from the offset value.
+ auto expected = save_time.time == 0s
+ ? at_time::Standard
+ : at_time::Daylight;
+@@ -567,8 +615,6 @@ namespace std::chrono
+ rule.save = save_time.time;
+
+ in >> rule.letters;
+- if (rule.letters == "-")
+- rule.letters.clear();
+ return in;
+ }
+
+@@ -719,58 +765,6 @@ namespace std::chrono
+ #endif // TZDB_DISABLED
+ };
+
+-#ifndef TZDB_DISABLED
+- namespace
+- {
+- bool
+- select_std_or_dst_abbrev(string& abbrev, minutes save)
+- {
+- if (size_t pos = abbrev.find('/'); pos != string::npos)
+- {
+- // Select one of "STD/DST" for standard or daylight.
+- if (save == 0min)
+- abbrev.erase(pos);
+- else
+- abbrev.erase(0, pos + 1);
+- return true;
+- }
+- return false;
+- }
+-
+- // Set the sys_info::abbrev string by expanding any placeholders.
+- void
+- format_abbrev_str(sys_info& info, string_view letters = {})
+- {
+- if (size_t pos = info.abbrev.find("%s"); pos != string::npos)
+- {
+- // Expand "%s" to the variable part, given by Rule::letters.
+- info.abbrev.replace(pos, 2, letters);
+- }
+- else if (size_t pos = info.abbrev.find("%z"); pos != string::npos)
+- {
+- // Expand "%z" to the UT offset as +/-hh, +/-hhmm, or +/-hhmmss.
+- hh_mm_ss<seconds> t(info.offset);
+- string z(1, "+-"[t.is_negative()]);
+- long val = t.hours().count();
+- if (minutes m = t.minutes(); m != m.zero())
+- {
+- val *= 100;
+- val += m.count();
+- if (seconds s = t.seconds(); s != s.zero())
+- {
+- val *= 100;
+- val += s.count();
+- }
+- }
+- z += std::to_string(val);
+- info.abbrev.replace(pos, 2, z);
+- }
+- else
+- select_std_or_dst_abbrev(info.abbrev, info.save);
+- }
+- }
+-#endif // TZDB_DISABLED
+-
+ // Implementation of std::chrono::time_zone::get_info(const sys_time<D>&)
+ sys_info
+ time_zone::_M_get_sys_info(sys_seconds tp) const
+@@ -839,12 +833,72 @@ namespace std::chrono
+ info.abbrev = ri.format();
+
+ string_view letters;
+- if (i != infos.begin())
++ if (i != infos.begin() && i[-1].expanded())
++ letters = i[-1].next_letters();
++
++ if (letters.empty())
+ {
+- if (i[-1].expanded())
+- letters = i[-1].next_letters();
+- // XXX else need to find Rule active before this time and use it
+- // to know the initial offset, save, and letters.
++ sys_seconds t = info.begin - seconds(1);
++ const year_month_day date(chrono::floor<days>(t));
++
++ // Try to find a Rule active before this time, to get initial
++ // SAVE and LETTERS values. There may not be a Rule for the period
++ // before the first DST transition, so find the earliest DST->STD
++ // transition and use the LETTERS from that.
++ const Rule* active_rule = nullptr;
++ sys_seconds active_rule_start = sys_seconds::min();
++ const Rule* first_std = nullptr;
++ for (const auto& rule : rules)
++ {
++ if (rule.save == minutes(0))
++ {
++ if (!first_std)
++ first_std = &rule;
++ else if (rule.from < first_std->from)
++ first_std = &rule;
++ else if (rule.from == first_std->from)
++ {
++ if (rule.start_time(rule.from, {})
++ < first_std->start_time(first_std->from, {}))
++ first_std = &rule;
++ }
++ }
++
++ year y = date.year();
++
++ if (y > rule.to) // rule no longer applies at time t
++ continue;
++ if (y < rule.from) // rule doesn't apply yet at time t
++ continue;
++
++ sys_seconds rule_start;
++
++ seconds offset{}; // appropriate for at_time::Universal
++ if (rule.when.indicator == at_time::Wall)
++ offset = info.offset;
++ else if (rule.when.indicator == at_time::Standard)
++ offset = ri.offset();
++
++ // Time the rule takes effect this year:
++ rule_start = rule.start_time(y, offset);
++
++ if (rule_start >= t && rule.from < y)
++ {
++ // Try this rule in the previous year.
++ rule_start = rule.start_time(--y, offset);
++ }
++
++ if (active_rule_start < rule_start && rule_start < t)
++ {
++ active_rule_start = rule_start;
++ active_rule = &rule;
++ }
++ }
++
++ if (active_rule)
++ letters = active_rule->letters;
++ else if (first_std)
++ letters = first_std->letters;
+ }
+
+ const Rule* curr_rule = nullptr;
+@@ -2069,9 +2123,11 @@ namespace std::chrono
+ istringstream in2(std::move(rules));
+ in2 >> rules_time;
+ inf.m_save = duration_cast<minutes>(rules_time.time);
++ // If the FORMAT is "STD/DST" then we can choose the right one
++ // now, so that we store a shorter string.
+ select_std_or_dst_abbrev(fmt, inf.m_save);
+ }
+- inf.set_abbrev(fmt);
++ inf.set_abbrev(std::move(fmt));
+ }
+
+ // YEAR [MONTH [DAY [TIME]]]
+@@ -2082,7 +2138,12 @@ namespace std::chrono
+ abbrev_month m{January};
+ int d = 1;
+ at_time t{};
++ // XXX DAY should support ON format, e.g. lastSun or Sun>=8
+ in >> m >> d >> t;
++ // XXX UNTIL field should be interpreted
++ // "using the rules in effect just before the transition"
++ // so might need to store as year_month_day and hh_mm_ss and only
++ // convert to a sys_time once we know the offset in effect.
+ inf.m_until = sys_days(year(y)/m.m/day(d)) + seconds(t.time);
+ }
+ else
+diff --git a/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc b/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
+new file mode 100644
+index 000000000000..f1a8fff02f58
+--- /dev/null
++++ b/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
+@@ -0,0 +1,106 @@
++// { dg-do run { target c++20 } }
++// { dg-require-effective-target tzdb }
++// { dg-require-effective-target cxx11_abi }
++// { dg-xfail-run-if "no weak override on AIX" { powerpc-ibm-aix* } }
++
++#include <chrono>
++#include <fstream>
++#include <testsuite_hooks.h>
++
++static bool override_used = false;
++
++namespace __gnu_cxx
++{
++ const char* zoneinfo_dir_override() {
++ override_used = true;
++ return "./";
++ }
++}
++
++using namespace std::chrono;
++
++void
++test_format()
++{
++ std::ofstream("tzdata.zi") << R"(# version test_1
++Zone Africa/Bissau -1:2:20 - LMT 1912 Ja 1 1u
++ -1 - %z 1975
++ 0 - GMT
++Zon Some/Zone 1:2:3 - %z 1900
++ 1:23:45 - %z 1950
++Zo Another/Zone 1:2:3 - AZ0 1901
++ 1 Roolz A%sZ 2000
++ 1 Roolz SAZ/DAZ 2005
++ 1 Roolz %z
++Rule Roolz 1950 max - April 1 2 1 D
++Rul Roolz 1950 max - Oct 1 1 0 S
++Z Strange/Zone 1 - X%sX 1980
++ 1 - FOO/BAR 1990
++ 2:00 - %zzz 1995
++ 0:9 - %zzz 1996
++ 0:8:7 - %zzz 1997
++ 0:6:5.5 - %zzz 1998
++)";
++
++ const auto& db = reload_tzdb();
++ VERIFY( override_used ); // If this fails then XFAIL for the target.
++ VERIFY( db.version == "test_1" );
++
++ // Test formatting %z as
++ auto tz = locate_zone("Africa/Bissau");
++ auto inf = tz->get_info(sys_days(1974y/1/1));
++ VERIFY( inf.abbrev == "-01" );
++
++ tz = locate_zone("Some/Zone");
++ inf = tz->get_info(sys_days(1899y/1/1));
++ VERIFY( inf.abbrev == "+010203" );
++ inf = tz->get_info(sys_days(1955y/1/1));
++ VERIFY( inf.abbrev == "+012345" );
++
++ tz = locate_zone("Another/Zone");
++ // Test formatting %s as the LETTER/S field from the active Rule.
++ inf = tz->get_info(sys_days(1910y/January/1));
++ VERIFY( inf.abbrev == "ASZ" );
++ inf = tz->get_info(sys_days(1950y/January/1));
++ VERIFY( inf.abbrev == "ASZ" );
++ inf = tz->get_info(sys_days(1950y/June/1));
++ VERIFY( inf.abbrev == "ADZ" );
++ inf = tz->get_info(sys_days(1999y/January/1));
++ VERIFY( inf.abbrev == "ASZ" );
++ inf = tz->get_info(sys_days(1999y/July/1));
++ VERIFY( inf.abbrev == "ADZ" );
++ // Test formatting STD/DST according to the active Rule.
++ inf = tz->get_info(sys_days(2000y/January/2));
++ VERIFY( inf.abbrev == "SAZ" );
++ inf = tz->get_info(sys_days(2001y/January/1));
++ VERIFY( inf.abbrev == "SAZ" );
++ inf = tz->get_info(sys_days(2001y/July/1));
++ VERIFY( inf.abbrev == "DAZ" );
++ // Test formatting %z as the offset determined by the active Rule.
++ inf = tz->get_info(sys_days(2005y/January/2));
++ VERIFY( inf.abbrev == "+01" );
++ inf = tz->get_info(sys_days(2006y/January/1));
++ VERIFY( inf.abbrev == "+01" );
++ inf = tz->get_info(sys_days(2006y/July/1));
++ VERIFY( inf.abbrev == "+02" );
++
++ // Test formatting %z, %s and S/D for a Zone with no associated Rules.
++ tz = locate_zone("Strange/Zone");
++ inf = tz->get_info(sys_days(1979y/January/1));
++ VERIFY( inf.abbrev == "XX" ); // No Rule means nothing to use for %s.
++ inf = tz->get_info(sys_days(1981y/July/1));
++ VERIFY( inf.abbrev == "FOO" ); // Always standard time means first string.
++ inf = tz->get_info(sys_days(1994y/July/1));
++ VERIFY( inf.abbrev == "+02zz" );
++ inf = tz->get_info(sys_days(1995y/July/1));
++ VERIFY( inf.abbrev == "+0009zz" );
++ inf = tz->get_info(sys_days(1996y/July/1));
++ VERIFY( inf.abbrev == "+000807zz" );
++ inf = tz->get_info(sys_days(1997y/July/1));
++ VERIFY( inf.abbrev == "+000606zz" );
++}
++
++int main()
++{
++ test_format();
++}
+diff --git a/libstdc++-v3/testsuite/std/time/tzdb/1.cc b/libstdc++-v3/testsuite/std/time/tzdb/1.cc
+index 796f3a8b4256..7a31c1c20ba7 100644
+--- a/libstdc++-v3/testsuite/std/time/tzdb/1.cc
++++ b/libstdc++-v3/testsuite/std/time/tzdb/1.cc
+@@ -39,11 +39,15 @@ test_locate()
+ const tzdb& db = get_tzdb();
+ const time_zone* tz = db.locate_zone("GMT");
+ VERIFY( tz != nullptr );
+- VERIFY( tz->name() == "Etc/GMT" );
+ VERIFY( tz == std::chrono::locate_zone("GMT") );
+ VERIFY( tz == db.locate_zone("Etc/GMT") );
+ VERIFY( tz == db.locate_zone("Etc/GMT+0") );
+
++ // Since 2022f GMT is now a Zone and Etc/GMT a link instead of vice versa,
++ // but only when using the vanguard format. As of 2024a, the main and
++ // rearguard formats still have Etc/GMT as a Zone and GMT as a link.
++ VERIFY( tz->name() == "GMT" || tz->name() == "Etc/GMT" );
++
+ VERIFY( db.locate_zone(db.current_zone()->name()) == db.current_zone() );
+ }
+
+--
+2.43.5
+
There is an issue in the std::chrono::tzdb parser that causes problems since the tzdata-2024b release started using %z in the main format. As a real world problem I encounter an issue with the waybar clock module, which ignores the timezone setting and only shows system time. Signed-off-by: Markus Volk <f_l_k@t-online.de> --- meta/recipes-devtools/gcc/gcc-13.3.inc | 1 + ...4fffe3fc82a710bea66ad651720d71c938b8.patch | 549 ++++++++++++++++++ 2 files changed, 550 insertions(+) create mode 100644 meta/recipes-devtools/gcc/gcc/gcc.git-ab884fffe3fc82a710bea66ad651720d71c938b8.patch