[Swan-commit] Changes to ref refs/heads/main

[Andrew Cagney]

New commits:
commit d1ae02a014c02c098e8a600255d3fce4182545a1
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri Nov 27 11:32:09 2020 -0500

    code: replace <ctype.h> is*(int) with hunk.h's char_is*(char)
    
    The is*() macros really only play well with functions such as getc()
    and fget() which return integers.  Libreswan's code base is instead
    playing with memory octets, and the char_is*(char) functions work with
    that.
    
    From GNU/Linux manual page for is*():
    
         The standards require that the argument c for these functions is
         either EOF or a value that is representable in the type unsigned
         char.
    
    And from the NetBSD i9.0 manual page for ctype:
    
         Some implementations of libc, such as glibc as of 2018, attempt
         to avoid the worst of the undefined behavior by defining the
         functions to work for all integer inputs representable by either
         unsigned char or char, and suppress the warning.  However, this
         is not an excuse for avoiding conversion to unsigned char: if EOF
         coincides with any such value, as it does when it is -1 on
         platforms with signed char, programs that pass char will still
         necessarily confuse the classification and mapping of EOF with
         the classification and mapping of some non-EOF inputs