Obscure C code (was Re: Excessive optimization)

[Eric Smith]

Brent Hilpert wrote:
> Perhaps it is more or less obvious when presented in stark, pared-down 
> form like this, but what is wrong with the following C program, or 
> what problem might be anticipated? (Arguably, it's not really a C 
> language problem):
>
> main()
>   {
>     Read();
>   }
>
> Read()
>   {
>     blah;
>     blah;
>   }
>

Is blah the name of a function?  If so, I've definitely encountered this 
problem before.  GCC will warn about it.

Eric