475cbed244
At the Daylight Tme to Standard Time transition, the local time repeats itself, i.e. 2am occurs twice. Qt's behavior when setting this using the local time is ambiguous, as it depends on the system implementation of mktime, which behaves differently on different platforms. Currently this behavior remains undefined. When setting using an msecs or time_t value however we can determine the correct instance to use and cache it to ensure that any conversion back from local time to msecs is performed consistantly on all platforms. Note that caching this value will result in any calculations being wrong should the system time zone change, or its rules change. This will be fixed in Qt 5.3 when the system time zone change signal is implemented and QDateTime switches to using QTimeZone instead of mktime to provide consistnt behavior across platforms. The QTimeZone spec does not require this fix as it already caches the correct offset in setMSecsFromEpoch(). Change-Id: I799588db474e744a6d81e80f6a0442920569ebd3 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> |
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| .gitignore | ||
| qdatetime.pro | ||
| tst_qdatetime.cpp | ||