Re: const versus __attribute__((const))

["H. Peter Anvin" <hpa@zytor.com>]

Arnd Bergmann wrote:
> 
> For reference, both gcc-3.3 and gcc-3.4 (snapshot) give produce the same assembly 
> as gcc-3.2 for your code, but give this warning:
> 
> test.c:6: warning: use of memory input without lvalue in asm operand 1 is deprecated
> test.c:7: warning: use of memory input without lvalue in asm operand 1 is deprecated
> 

In some ways, this is rather unfortunate, too.  What it really means is 
that the gcc "m" constraint is overloaded; it would have been better if 
they would have created a new modifier (say "*") for "must be lvalue."

	-hpa