diff options
Diffstat (limited to 'third_party/abseil-cpp/absl/time/internal/cctz/src/time_zone_if.h')
| -rw-r--r-- | third_party/abseil-cpp/absl/time/internal/cctz/src/time_zone_if.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/third_party/abseil-cpp/absl/time/internal/cctz/src/time_zone_if.h b/third_party/abseil-cpp/absl/time/internal/cctz/src/time_zone_if.h index 32c0891c1e..7d3e42d3cd 100644 --- a/third_party/abseil-cpp/absl/time/internal/cctz/src/time_zone_if.h +++ b/third_party/abseil-cpp/absl/time/internal/cctz/src/time_zone_if.h @@ -56,7 +56,8 @@ class TimeZoneIf { // Convert between time_point<seconds> and a count of seconds since the // Unix epoch. We assume that the std::chrono::system_clock and the -// Unix clock are second aligned, but not that they share an epoch. +// Unix clock are second aligned, and that the results are representable. +// (That is, that they share an epoch, which is required since C++20.) inline std::int_fast64_t ToUnixSeconds(const time_point<seconds>& tp) { return (tp - std::chrono::time_point_cast<seconds>( std::chrono::system_clock::from_time_t(0))) |