Subject: [Boost-bugs] [Boost C++ Libraries] #7687: [date_time] implicit conversion loses integer precision
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-11-13 07:53:12
#7687: [date_time] implicit conversion loses integer precision
-------------------------------+--------------------------------------------
Reporter: crueegg@… | Owner: az_sw_dude
Type: Bugs | Status: new
Milestone: To Be Determined | Component: date_time
Version: Boost 1.52.0 | Severity: Cosmetic
Keywords: |
-------------------------------+--------------------------------------------
Compiling with Apple/clang-421.11.66, including boost/date_time.hpp, gives
multiple warnings about implicite long64 to int32 conversions:
main.cpp:9
{{{
#include <boost/date_time.hpp>
}}}
{{{
clang -x c++ -stdlib=libstdc++ -Iboost_1_52_0 -Wshorten-64-to-32 -c
main.cpp
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:24:
In file included from
boost_1_52_0/boost/date_time/posix_time/time_formatters.hpp:16:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_types.hpp:16:
boost_1_52_0/boost/date_time/posix_time/posix_time_duration.hpp:24:21:
warning: implicit conversion loses integer precision: 'long' to
'hour_type'
(aka 'int') [-Wshorten-64-to-32]
time_duration(h,0,0)
~~~~~~~~~~~~~ ^
boost_1_52_0/boost/date_time/posix_time/posix_time_duration.hpp:35:23:
warning: implicit conversion loses integer precision: 'long' to 'min_type'
(aka 'int')
[-Wshorten-64-to-32]
time_duration(0,m,0)
~~~~~~~~~~~~~ ^
boost_1_52_0/boost/date_time/posix_time/posix_time_duration.hpp:46:25:
warning: implicit conversion loses integer precision: 'long' to 'sec_type'
(aka 'int')
[-Wshorten-64-to-32]
time_duration(0,0,s)
~~~~~~~~~~~~~ ^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:18:
In file included from
boost_1_52_0/boost/date_time/gregorian/gregorian_types.hpp:19:
In file included from
boost_1_52_0/boost/date_time/gregorian/greg_calendar.hpp:15:
In file included from
boost_1_52_0/boost/date_time/gregorian_calendar.hpp:63:
boost_1_52_0/boost/date_time/gregorian_calendar.ipp:82:12: warning:
implicit conversion loses integer precision: 'unsigned long' to
'date_int_type'
(aka 'unsigned int') [-Wshorten-64-to-32]
return d;
~~~~~~ ^
boost_1_52_0/boost/date_time/date.hpp:71:25: note: in instantiation of
member function
'boost::date_time::gregorian_calendar_base<boost::date_time::year_month_day_base<boost::gregorian::greg_year,
boost::gregorian::greg_month, boost::gregorian::greg_day>,
unsigned int>::day_number' requested here
: days_(calendar::day_number(ymd_type(y, m, d)))
^
boost_1_52_0/boost/date_time/gregorian/greg_date.hpp:56:9: note: in
instantiation of member function
'boost::date_time::date<boost::gregorian::date,
boost::gregorian::gregorian_calendar,
boost::gregorian::date_duration>::date' requested here
: date_time::date<date, gregorian_calendar, date_duration>(y, m, d)
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:18:
In file included from
boost_1_52_0/boost/date_time/gregorian/gregorian_types.hpp:19:
In file included from
boost_1_52_0/boost/date_time/gregorian/greg_calendar.hpp:15:
In file included from
boost_1_52_0/boost/date_time/gregorian_calendar.hpp:63:
boost_1_52_0/boost/date_time/gregorian_calendar.ipp:47:14: warning:
implicit conversion loses integer precision: 'unsigned long' to 'int'
[-Wshorten-64-to-32]
return week;
~~~~~~ ^~~~
boost_1_52_0/boost/date_time/gregorian/greg_date.hpp:111:34: note: in
instantiation of member function
'boost::date_time::gregorian_calendar_base<boost::date_time::year_month_day_base<boost::gregorian::greg_year,
boost::gregorian::greg_month, boost::gregorian::greg_day>,
unsigned int>::week_number' requested here
return gregorian_calendar::week_number(ymd);
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:18:
In file included from
boost_1_52_0/boost/date_time/gregorian/gregorian_types.hpp:19:
In file included from
boost_1_52_0/boost/date_time/gregorian/greg_calendar.hpp:15:
In file included from
boost_1_52_0/boost/date_time/gregorian_calendar.hpp:63:
boost_1_52_0/boost/date_time/gregorian_calendar.ipp:52:16: warning:
implicit conversion loses integer precision: 'unsigned long' to 'int'
[-Wshorten-64-to-32]
return week; //under these circumstances week == 53.
~~~~~~ ^~~~
boost_1_52_0/boost/date_time/gregorian_calendar.ipp:63:14: warning:
implicit conversion loses integer precision: 'unsigned long' to 'int'
[-Wshorten-64-to-32]
return week;
~~~~~~ ^~~~
boost_1_52_0/boost/date_time/gregorian_calendar.ipp:66:12: warning:
implicit conversion loses integer precision: 'unsigned long' to 'int'
[-Wshorten-64-to-32]
return week; //not reachable -- well except if day == 5 and
is_leap_year != true
~~~~~~ ^~~~
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:15:
boost_1_52_0/boost/date_time/time_system_counted.hpp:57:52: warning:
implicit conversion loses integer precision: 'unsigned long' to
'typename calendar_type::date_int_type' (aka 'unsigned int')
[-Wshorten-64-to-32]
typename calendar_type::date_int_type dc = day_count();
~~ ^~~~~~~~~~~
boost_1_52_0/boost/date_time/time_system_counted.hpp:170:18: note: in
instantiation of member function
'boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>::date'
requested here
return val.date();
^
boost_1_52_0/boost/date_time/time.hpp:72:27: note: in instantiation of
member function
'boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>
>::get_date' requested here
return time_system::get_date(time_);
^
boost_1_52_0/boost/date_time/posix_time/date_duration_operators.hpp:33:31:
note: in instantiation of member function
'boost::date_time::base_time<boost::posix_time::ptime,
boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>>
>::date' requested here
return t + m.get_offset(t.date());
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:18:
In file included from
boost_1_52_0/boost/date_time/gregorian/gregorian_types.hpp:17:
boost_1_52_0/boost/date_time/date.hpp:180:47: warning: implicit conversion
loses integer precision: 'duration_rep_type' (aka 'long') to 'int_type'
(aka 'unsigned int') [-Wshorten-64-to-32]
return date_type(date_rep_type(days_) + dd.days());
~~~~~~~~~~~~~ ^~~~~~~~~
boost_1_52_0/boost/date_time/time.hpp:145:49: note: in instantiation of
member function 'boost::date_time::date<boost::gregorian::date,
boost::gregorian::gregorian_calendar,
boost::gregorian::date_duration>::operator+' requested here
time_ = (time_system::get_time_rep(date() + dd, time_of_day()));
^
boost_1_52_0/boost/date_time/posix_time/date_duration_operators.hpp:44:14:
note: in instantiation of member function
'boost::date_time::base_time<boost::posix_time::ptime,
boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>>
>::operator+=' requested here
return t += m.get_offset(t.date());
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:17:
In file included from
boost_1_52_0/boost/date_time/time_resolution_traits.hpp:15:
boost_1_52_0/boost/date_time/int_adapter.hpp:233:41: warning: implicit
conversion loses integer precision: 'long' to 'int_type' (aka 'unsigned
int')
[-Wshorten-64-to-32]
return int_adapter<int_type>(value_ + rhs.as_number());
~~~~~~~~~~~ ~~~~~~~^~~~~~~~~~~~~~~~~
boost_1_52_0/boost/date_time/date.hpp:178:47: note: in instantiation of
function template specialization 'boost::date_time::int_adapter<unsigned
int>::operator+<long>' requested here
return date_type(date_rep_type(days_) + dd.get_rep());
^
boost_1_52_0/boost/date_time/time.hpp:145:49: note: in instantiation of
member function 'boost::date_time::date<boost::gregorian::date,
boost::gregorian::gregorian_calendar,
boost::gregorian::date_duration>::operator+' requested here
time_ = (time_system::get_time_rep(date() + dd, time_of_day()));
^
boost_1_52_0/boost/date_time/posix_time/date_duration_operators.hpp:44:14:
note: in instantiation of member function
'boost::date_time::base_time<boost::posix_time::ptime,
boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>>
>::operator+=' requested here
return t += m.get_offset(t.date());
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:18:
In file included from
boost_1_52_0/boost/date_time/gregorian/gregorian_types.hpp:17:
boost_1_52_0/boost/date_time/date.hpp:162:47: warning: implicit conversion
loses integer precision: 'duration_rep_type' (aka 'long') to 'int_type'
(aka 'unsigned int') [-Wshorten-64-to-32]
return date_type(date_rep_type(days_) - dd.days());
~~~~~~~~~~~~~ ^~~~~~~~~
boost_1_52_0/boost/date_time/period.hpp:93:21: note: in instantiation of
member function 'boost::date_time::date<boost::gregorian::date,
boost::gregorian::gregorian_calendar,
boost::gregorian::date_duration>::operator-' requested here
last_(end_point - duration_rep::unit())
^
boost_1_52_0/boost/date_time/date_parsing.hpp:308:14: note: in
instantiation of member function
'boost::date_time::period<boost::gregorian::date,
boost::gregorian::date_duration>::period' requested here
return period<date_type, typename date_type::duration_type>(d1, d2);
^
boost_1_52_0/boost/date_time/gregorian/parsers.hpp:79:12: note: in
instantiation of function template specialization
'boost::date_time::from_simple_string_type<boost::gregorian::date,
char>' requested here
return date_time::from_simple_string_type<date,char>(s);
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/posix_time/ptime.hpp:12:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_system.hpp:13:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_config.hpp:17:
In file included from
boost_1_52_0/boost/date_time/time_resolution_traits.hpp:15:
boost_1_52_0/boost/date_time/int_adapter.hpp:282:41: warning: implicit
conversion loses integer precision: 'long' to 'int_type' (aka 'unsigned
int')
[-Wshorten-64-to-32]
return int_adapter<int_type>(value_ - rhs.as_number());
~~~~~~~~~~~ ~~~~~~~^~~~~~~~~~~~~~~~~
boost_1_52_0/boost/date_time/date.hpp:160:47: note: in instantiation of
function template specialization 'boost::date_time::int_adapter<unsigned
int>::operator-<long>' requested here
return date_type(date_rep_type(days_) - dd.get_rep());
^
boost_1_52_0/boost/date_time/period.hpp:93:21: note: in instantiation of
member function 'boost::date_time::date<boost::gregorian::date,
boost::gregorian::gregorian_calendar,
boost::gregorian::date_duration>::operator-' requested here
last_(end_point - duration_rep::unit())
^
boost_1_52_0/boost/date_time/date_parsing.hpp:308:14: note: in
instantiation of member function
'boost::date_time::period<boost::gregorian::date,
boost::gregorian::date_duration>::period' requested here
return period<date_type, typename date_type::duration_type>(d1, d2);
^
boost_1_52_0/boost/date_time/gregorian/parsers.hpp:79:12: note: in
instantiation of function template specialization
'boost::date_time::from_simple_string_type<boost::gregorian::date,
char>' requested here
return date_time::from_simple_string_type<date,char>(s);
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:24:
In file included from
boost_1_52_0/boost/date_time/posix_time/time_formatters.hpp:16:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_types.hpp:20:
boost_1_52_0/boost/date_time/dst_rules.hpp:57:49: warning: implicit
conversion loses integer precision: 'long' to 'min_type' (aka 'int')
[-Wshorten-64-to-32]
if (time_of_day >= time_duration_type(0,offset,0)) {
~~~~~~~~~~~~~~~~~~ ^~~~~~
boost_1_52_0/boost/date_time/dst_rules.hpp:164:18: note: in instantiation
of member function
'boost::date_time::dst_calculator<boost::gregorian::date,
boost::posix_time::time_duration>::process_local_dst_start_day'
requested here
return process_local_dst_start_day(time_of_day,
^
boost_1_52_0/boost/date_time/dst_rules.hpp:116:16: note: in instantiation
of member function
'boost::date_time::dst_calculator<boost::gregorian::date,
boost::posix_time::time_duration>::local_is_dst' requested here
return local_is_dst(current_day, time_of_day,
^
boost_1_52_0/boost/date_time/local_time/local_date_time.hpp:196:16: note:
in instantiation of member function
'boost::date_time::dst_calculator<boost::gregorian::date,
boost::posix_time::time_duration>::local_is_dst' requested here
return dst_calculator::local_is_dst(
^
boost_1_52_0/boost/date_time/local_time/local_date_time.hpp:241:16: note:
in instantiation of member function
'boost::local_time::local_date_time_base<boost::posix_time::ptime,
boost::date_time::time_zone_base<boost::posix_time::ptime, char>
>::check_dst' requested here
switch(check_dst(lt.date(), lt.time_of_day(), zone_)){
^
boost_1_52_0/boost/date_time/local_time/conversion.hpp:23:9: note: in
instantiation of member function
'boost::local_time::local_date_time_base<boost::posix_time::ptime,
boost::date_time::time_zone_base<boost::posix_time::ptime, char>
>::is_dst' requested here
if(lt.is_dst()){
^
In file included from main.cpp:9:
In file included from boost_1_52_0/boost/date_time.hpp:15:
In file included from
boost_1_52_0/boost/date_time/local_time/local_time.hpp:11:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time.hpp:24:
In file included from
boost_1_52_0/boost/date_time/posix_time/time_formatters.hpp:16:
In file included from
boost_1_52_0/boost/date_time/posix_time/posix_time_types.hpp:20:
boost_1_52_0/boost/date_time/dst_rules.hpp:78:44: warning: implicit
conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
int offset = dst_end_offset_minutes-dst_length_minutes;
~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
boost_1_52_0/boost/date_time/dst_rules.hpp:170:18: note: in instantiation
of member function
'boost::date_time::dst_calculator<boost::gregorian::date,
boost::posix_time::time_duration>::process_local_dst_end_day'
requested here
return process_local_dst_end_day(time_of_day,
^
boost_1_52_0/boost/date_time/dst_rules.hpp:116:16: note: in instantiation
of member function
'boost::date_time::dst_calculator<boost::gregorian::date,
boost::posix_time::time_duration>::local_is_dst' requested here
return local_is_dst(current_day, time_of_day,
^
boost_1_52_0/boost/date_time/local_time/local_date_time.hpp:196:16: note:
in instantiation of member function
'boost::date_time::dst_calculator<boost::gregorian::date,
boost::posix_time::time_duration>::local_is_dst' requested here
return dst_calculator::local_is_dst(
^
boost_1_52_0/boost/date_time/local_time/local_date_time.hpp:241:16: note:
in instantiation of member function
'boost::local_time::local_date_time_base<boost::posix_time::ptime,
boost::date_time::time_zone_base<boost::posix_time::ptime, char>
>::check_dst' requested here
switch(check_dst(lt.date(), lt.time_of_day(), zone_)){
^
boost_1_52_0/boost/date_time/local_time/conversion.hpp:23:9: note: in
instantiation of member function
'boost::local_time::local_date_time_base<boost::posix_time::ptime,
boost::date_time::time_zone_base<boost::posix_time::ptime, char>
>::is_dst' requested here
if(lt.is_dst()){
^
15 warnings generated.
}}}
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/7687> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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