Re: [HACKERS] taking stdbool.h into use

I wrote:
> gaur/pademelon isn't booted up right now, but it might provide
> an example of a system that lacks <stdbool.h> altogether.
> (If it doesn't, I'd be willing to concede that we need not
> consider that scenario anymore.)

For the record --- pademelon (vendor cc on that box) doesn't have
<stdbool.h> at all.  gaur (user-installed gcc) has such a header,
but it contains

typedef enum {   false = 0,   true = 1 } bool;

which unsurprisingly results in
sizeof(bool) = 4

What's possibly more relevant to Peter's patch, this represents
a platform on which "#include <stdbool.h>" succeeds, but
(a) there is no typedef _Bool, and (b) "bool" is not a macro.
Obviously pre-C99 ...
        regards, tom lane