Problem with gl_REGEX and C++

[Albert Chin]

gl_REGEX from m4/regex.m4 cannot be reliably tested under C++. The
problem is:
            static struct re_pattern_buffer regex;
            unsigned char folded_chars[UCHAR_MAX + 1];
            ...
            regex.translate = folded_chars;

If the `translate' member is char * on some platforms, this test will
fail.

On RHEL4, g++ returns:
  error: invalid conversion from `unsigned char*' to `char*'
because the `translate' member is char *. RHEL5 work fine as the
`translate' member is unsigned char *.

-- 
albert chin (address@hidden)