Clang 12.0 bug with boost version … | Apple Developer Forums

Clang 12.0 bug with boost version 1.74 in date_time module

The compiler is misinterpreting the following code in boost/date_time/time_system_split.hpp:

Code Block static BOOST_CXX14_CONSTEXPR
bool is_less(const time_rep_type& lhs, const time_rep_type& rhs)
{
	if (lhs.day < rhs.day) return true;
	if (lhs.day > rhs.day) return false;
	return (lhs.time_of_day < rhs.time_of_day);
}

Code Block
static BOOST_CXX14_CONSTEXPR
bool is_less(const time_rep_type& lhs, const time_rep_type& rhs)
{
if (lhs.day < rhs.day) return true;
if (lhs.day > rhs.day) return false;
return (lhs.time_of_day < rhs.time_of_day);
}

Line 6 is giving the error:

Code Block /opt/homebrew/include/boost/date_time/time_system_split.hpp:154:48: error: expected '>'
 
   return (lhs.time_of_day < rhs.time_of_day);
                                             ^
    /opt/homebrew/include/boost/date_time/time_system_split.hpp:154:48: error: expected unqualified-id

Code Block
/opt/homebrew/include/boost/date_time/time_system_split.hpp:154:48: error: expected '>'

return (lhs.time_of_day < rhs.time_of_day);
^
/opt/homebrew/include/boost/date_time/time_system_split.hpp:154:48: error: expected unqualified-id

The workaround is to change the line as follows:

Code Block 	return ((lhs.time_of_day) < rhs.time_of_day);