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Fixed deduction guides for GCC 8.

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The GCC 8 was correctly preffering the deduction guide
syntezied from the std::string_view constructor which is more
specialized than deduction guide. Changed the constructor
so the Duration cannot be deduced from it.
This commit is contained in:
Tomasz Kamiński
2019-08-06 08:32:09 +02:00
committed by Howard Hinnant
parent 1d721d9afd
commit 7c020642fb
1 changed files with 15 additions and 6 deletions
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21
include/date/tz.h
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@@ -151,6 +151,15 @@ enum class choose {earliest, latest};
namespace detail
{
struct undocumented;
template<typename T>
struct nodeduct
{
using type = T;
};
template<typename T>
using nodeduct_t = typename nodeduct<T>::type;
}
struct sys_info
@@ -447,7 +456,7 @@ public:
sys_time<Duration>
>::value
>::type>
zoned_time(std::string_view name, const sys_time<Duration>& st);
zoned_time(std::string_view name, detail::nodeduct_t<const sys_time<Duration>&> st);
template <class T = TimeZonePtr,
class = typename std::enable_if
@@ -459,7 +468,7 @@ public:
local_time<Duration>
>::value
>::type>
zoned_time(std::string_view name, const local_time<Duration>& tp);
zoned_time(std::string_view name, detail::nodeduct_t<const local_time<Duration>&> tp);
template <class T = TimeZonePtr,
class = typename std::enable_if
@@ -472,7 +481,7 @@ public:
choose
>::value
>::type>
zoned_time(std::string_view name, const local_time<Duration>& tp, choose c);
zoned_time(std::string_view name, detail::nodeduct_t<const local_time<Duration>&> tp, choose c);
template <class Duration2, class TimeZonePtr2, class T = TimeZonePtr,
class = typename std::enable_if
@@ -1448,7 +1457,7 @@ template <class Duration, class TimeZonePtr>
template <class T, class>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(std::string_view name,
const sys_time<Duration>& st)
detail::nodeduct_t<const sys_time<Duration>&> st)
: zoned_time(zoned_traits<TimeZonePtr>::locate_zone(name), st)
{}
@@ -1456,7 +1465,7 @@ template <class Duration, class TimeZonePtr>
template <class T, class>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(std::string_view name,
const local_time<Duration>& t)
detail::nodeduct_t<const local_time<Duration>&> t)
: zoned_time(zoned_traits<TimeZonePtr>::locate_zone(name), t)
{}
@@ -1464,7 +1473,7 @@ template <class Duration, class TimeZonePtr>
template <class T, class>
inline
zoned_time<Duration, TimeZonePtr>::zoned_time(std::string_view name,
const local_time<Duration>& t, choose c)
detail::nodeduct_t<const local_time<Duration>&> t, choose c)
: zoned_time(zoned_traits<TimeZonePtr>::locate_zone(name), t, c)
{}