id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4636,Run-Time Check Failure #1 in feed_args.hpp using Visual Studio 2010,Rüdiger Brünner <rbruenner@…>,"James E. King, III","Hello,

the statement
            size_type res_size = (std::min)(
                static_cast<size_type>(specs.truncate_ - !!prefix_space), 
                buf.pcount() );

on line 166 ff. causes an error message in Debug mode in VS 2010 when run-time checks are enabled:

""Run-Time Check Failure #1 - A cast to a smaller data type has caused a loss of data.  If this was intentional, you should mask the source of the cast with the appropriate bitmask.  For example:  

	char c = (i & 0xFF);

Changing the code in this way will not affect the quality of the resulting optimized code.""

The value of specs.truncate_ (64 bits) is LLONG_MAX that is going to be cast down to a size_t (32 bits). This causes that warning.
Would it be feasible to initalise the truncate_ member to INT_MAX on 32 bit systems to avoid this issue?

This message is *very* annoying since it pops up very frequently.

Best regards
Rüdiger
",Bugs,closed,Boost 1.66.0,format,Boost 1.43.0,Problem,fixed,RTC VS2010 MSVC10,