[boost] RE: Re: Formal Review: FOREACH macro

From: Angus Leeming (angus.leeming_at_[hidden])
Date: 2005-05-05 11:31:22

Hartmut Kaiser wrote:
> FYI, Wave has a special #pragma usable for bridging this gap:
> 
>     #pragma wave system(any OS command)
> 
> which spawns of the given command and intercepts the produced stdout
> stream, inserting it instead of the pragma itself :-P. In C99 mode you
> even may use it from the operator _Pragma and force a full macro
> expansion of the inserted results:
> 
> #define EVAL(x) x
> EVAL(_Pragma("wave system(any OS command)"))
> 
> Regards Hartmut

Hartmut,

is that a good idea? I can imagine that running an existing executable 
might cause untold damage to my system, but compiling a piece of source 
code?

Doesn't it smack of C++ source code as computer virus? 

Regards,
Angus