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Date: Sun, 17 May 2020 17:10:55 +0100
From: Derek Fawcus <dfawcus+lists-tuhs@employees.org>
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Subject: Re: [TUHS] v7 K&R C
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On Fri, May 15, 2020 at 10:31:38PM +0100, Richard Tobin wrote:
>   "The implementation shall define char to have the same range,
>   representation, and behavior as either signed char or unsigned char."
>   - C99
> 
> (Technically it's a separate type from both of them.)

I was about to suggest I'd yet to come across a compiler which
handled them that way, but on checking I find that both clang
and gcc do now in effect have 3 types.

i.e. both 'unsigned char *' and 'signed char *' values passed to
a function taking 'char *' raises a warning.

I wonder when they started doing that?

DF