Martin wrote:
Michael Walter <michael.walter <at> gmail.com> writes:
But this will not fix the potential bug it's warning about.
Michael
Not sure how it works in VC8 but in VC7 there were several false warnings.
one example:
cout << size_t(100) << endl;
will give you a warning because the "unsigned int" overload is used to output the value. This could be a problem if size_t is 64 bits.
This does not produce a warning on my msvc-7.0, 7.1 or 8.0 with -Wp64 and -W4. The Wp64 option is for pointer conversions. Consider: int * p = 0; cout << size_t( 0 ) << endl; // ok: integral value cout << size_t( p ) << endl; // warning: pointer value main.cpp(7) : warning C4244: 'argument' : conversion from '__w64 unsigned int' to 'unsigned int', possible loss of data This is used because Win32 programming uses a lot of casts between integers and pointers (e.g. for message argument passing). Regards, Reece