Re: PIPE_BUF and read with SIZE < 0

[Robert Millan]

On Wed, Apr 23, 2003 at 05:50:49PM -0400, James A. Morrison wrote:
> On Wed, 2003-04-23 at 16:20, Robert Millan wrote:
> > - is the behaviour of read() undefined when the SIZE argument is a
> > negative value?
> 
>  [...]
>  So, it can return a negative value, but size_t is, at least on
> GNU systems, unsigned.  So specifing -1 will give you a rather large
> value, perhaps even 2^32 - 1.

I don't understand that. If size_t is an unsigned int, and i try to pass it
a signed int, shouldn't the compiler require a cast? so that "(size_t) -1"
should bring 2^32-1 and "-1" should fail to compile?

sign conversions like that are dangerous, maybe i should file a wishlist
bug on gcc?

-- 
Robert Millan

make: *** No rule to make target `war'.  Stop.

Another world is possible - Just say no to genocide