Comparison between signed and unsigned integer expressions

[sagimihaly+boost@…]

Compiling with g++ 4.4, I get the following warning:

/boost/mpl/print.hpp:55: warning: comparison between signed and unsigned integer expressions

the expression is

sizeof(T) > -1

Is there a specific reason for not using

sizeof(T) >= 0

instead?

[anonymous]

I think that making this change would merely replace one warning for another. In particular, it would say "result of expression is always true" or something like that; since for any T sizeof (T) is >= 0 (or, if T is incomplete, is a compile error).

A better question is "What is this code trying to accomplish"?

[Steven Watanabe]

This code is trying to cause a warning, so it's doing exactly what it's supposed to. Look at the template instantiation backtrace to figure out why.

[anonymous]

This code is trying to cause a warning

Sabotage?