libstdc++: Update expiry times for leap seconds lists

The list in tzdb.cc isn't the only hardcoded list of leap seconds in the
library, there's the one defined inline in <chrono> (to avoid loading
the tzdb for the common case) and another in a testcase. This updates
them to note that there are no new leap seconds in 2024 either, until at
least 2024-12-28.

libstdc++-v3/ChangeLog:

	* include/std/chrono (__get_leap_second_info): Update expiry
	time for hardcoded list of leap seconds.
	* testsuite/std/time/tzdb/leap_seconds.cc: Update comment.

(cherry picked from commit ddd347fca0685804bf68d6c768282573f3ea6442)

diff --git a/libstdc++-v3/include/std/chrono b/libstdc++-v3/include/std/chrono
index b2abf90cf71e8d4165228d741fe371d892873a0e..edb782f6f10e6f6782beadda14f9c5510d3a9801 100644 (file)
--- a/libstdc++-v3/include/std/chrono
+++ b/libstdc++-v3/include/std/chrono
@@ -3253,7 +3253,7 @@ namespace __detail
       };
       // The list above is known to be valid until (at least) this date
       // and only contains positive leap seconds.
-      const sys_seconds __expires(1703721600s); // 2023-12-28 00:00:00 UTC
+      const sys_seconds __expires(1735344000s); // 2024-12-28 00:00:00 UTC
 
 #if _GLIBCXX_USE_CXX11_ABI || ! _GLIBCXX_USE_DUAL_ABI
       if (__ss > __expires)

diff --git a/libstdc++-v3/testsuite/std/time/tzdb/leap_seconds.cc b/libstdc++-v3/testsuite/std/time/tzdb/leap_seconds.cc
index d27038225c8f53cf6b9d4d033f1eedbed4455080..537fb0670ff030ccc6a56a6a0ca7f12c90e163cc 100644 (file)
--- a/libstdc++-v3/testsuite/std/time/tzdb/leap_seconds.cc
+++ b/libstdc++-v3/testsuite/std/time/tzdb/leap_seconds.cc
@@ -22,7 +22,7 @@ void
 test_load_leapseconds()
 {
   std::ofstream("leapseconds") << R"(
-# These are all the real leap seconds as of 2022:
+# These are all the real leap seconds as of 2024:
 Leap   1972    Jun     30      23:59:60        +       S
 Leap   1972    Dec     31      23:59:60        +       S
 Leap   1973    Dec     31      23:59:60        +       S