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Throw exception if zoned_time is constructed with nullptr

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This commit is contained in:
Howard Hinnant 2020-06-14 19:30:23 -04:00
parent cac99da8dc
commit d544e5af25
1 changed files with 25 additions and 8 deletions
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33
include/date/tz.h
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@ -703,6 +703,11 @@ public:
private:
template <class D, class T> friend class zoned_time;
template <class TimeZonePtr2>
static
TimeZonePtr2&&
check(TimeZonePtr2&& p);
};
using zoned_seconds = zoned_time<std::chrono::seconds>;
@ -1344,13 +1349,25 @@ to_raw_pointer(Pointer p) noexcept
} // namespace detail
template <class Duration, class TimeZonePtr>
template <class TimeZonePtr2>
inline
TimeZonePtr2&&
zoned_time<Duration, TimeZonePtr>::check(TimeZonePtr2&& p)
{
if (detail::to_raw_pointer(p) == nullptr)
throw std::runtime_error(
"zoned_time constructed with a time zone pointer == nullptr");
return std::forward<TimeZonePtr2>(p);
}
template <class Duration, class TimeZonePtr>
#if !defined(_MSC_VER) || (_MSC_VER > 1916)
template <class T, class>
#endif
inline
zoned_time<Duration, TimeZonePtr>::zoned_time()
: zone_(zoned_traits<TimeZonePtr>::default_zone())
: zone_(check(zoned_traits<TimeZonePtr>::default_zone()))
{}
template <class Duration, class TimeZonePtr>
@ -1359,15 +1376,15 @@ template <class T, class>
#endif
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(const sys_time<Duration>& st)
: zone_(zoned_traits<TimeZonePtr>::default_zone())
: zone_(check(zoned_traits<TimeZonePtr>::default_zone()))
, tp_(st)
{}
template <class Duration, class TimeZonePtr>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(TimeZonePtr z)
: zone_(std::move(z))
{assert(detail::to_raw_pointer(zone_) != nullptr);}
: zone_(check(std::move(z)))
{}
#if HAS_STRING_VIEW
@ -1402,7 +1419,7 @@ zoned_time<Duration, TimeZonePtr>::zoned_time(const zoned_time<Duration2, TimeZo
template <class Duration, class TimeZonePtr>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(TimeZonePtr z, const sys_time<Duration>& st)
: zone_(std::move(z))
: zone_(check(std::move(z)))
, tp_(st)
{}
@ -1412,7 +1429,7 @@ template <class T, class>
#endif
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(TimeZonePtr z, const local_time<Duration>& t)
: zone_(std::move(z))
: zone_(check(std::move(z)))
, tp_(zone_->to_sys(t))
{}
@ -1423,7 +1440,7 @@ template <class T, class>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(TimeZonePtr z, const local_time<Duration>& t,
choose c)
: zone_(std::move(z))
: zone_(check(std::move(z)))
, tp_(zone_->to_sys(t, c))
{}
@ -1432,7 +1449,7 @@ template <class Duration2, class TimeZonePtr2, class>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(TimeZonePtr z,
const zoned_time<Duration2, TimeZonePtr2>& zt)
: zone_(std::move(z))
: zone_(check(std::move(z)))
, tp_(zt.tp_)
{}