Re: [Boost-users] Ugly warnings from BOOST_STATIC_ASSERT

From: Jean-Francois Bastien (jfbastien_at_[hidden])
Date: 2008-03-18 12:12:10

> We have this really neat and simple macro in our project:
> #define compile_assert(x) typedef bool 
> COMPILE_ASSERT[(x) ? 1 : -1]
>
> Although it does what we need and serves us well, I 
> tried to replace
> it with BOOST_STATIC_ASSERT. Unfortunately this resulted 
> in a lot of
> ugly warnings throughout the compile:
>   warning: use of old-style cast
>     

There's the following comment in the static assert header:

// Note that the argument to the assert is explicitly cast to bool using
old-
// style casts: too many compilers currently have problems with
static_cast
// when used inside integral constant expressions.

The solution would be to add even more defines to use old style or
static casts depending on which compiler is used.

JF