Hi,
The purpose of this email is to get some insight on the problem we faced
when trying to compile chrono from the 1.47 Beta 1 package. I have tried
both the latest released compiler (2011 Update 4) and the current SP1 beta.
There is no issue with VS 2010 SP1's compiler.
It was first surfaced here:
http://comments.gmane.org/gmane.comp.lib.boost.user/68421. The error
received can be seen below:
< snip >
chrono.cpp
.\boost/chrono/duration.hpp(94): error: expected an expression
&& (boost::is_convertible
After some discussion with Vicente and some testing by me, it turns out that
Intel was not happy with the first operand of the && operator in the
following snippet of code:
template ::type>::value)
&& (boost::is_convertible::type>::value)
)
>
struct duration_divide_imp
{
};
If we place an additional parenthesis around that first operand like this:
template ::type>::value) )
&& (boost::is_convertible::type>::value)
)
>
struct duration_divide_imp
{
};
It will happily compile. It is rather bizarre that this is necessary, which
leads Vicente and I to believe that there is a bug in the Intel Compiler.
What do you guys think? I have also posted to the Intel forums, the thread
can be seen here:
http://software.intel.com/en-us/forums/showthread.php?t=84061
Regards,
Edward
