Re: AC_HEADER_STDC

[Bruno Haible]

Paul Eggert wrote:
> > On a system where 'unsigned char' and 'int' have the same number of
> > bits, the getc() and fgetc() result EOF would be ambiguous: it could
> > be EOF or it could be a casted 'unsigned char' value. It sounds very
> > improbable that such a system exists, now or in the future.
> 
> They do exist.  Here's one example that I found with a quick Google search:
> 
> http://www.ecse.rpi.edu/courses/CStudio/Cal_lab/ADI_DSP/21K/INCLUDE/LIMITS.H
> 
> Typically they're DSPs, so they are freestanding implementations and
> don't have getc.  If they did have getc, getc would probably return
> something in the range -1..255 anyway, so there would be no ambiguity.

OK, I'm convinced. Thanks for having seen and fixed that.
UCHAR_MAX and CHAR_BIT are revealed to be less hardcoded than I thought.

Bruno