From:	rhg AT cps DOT com (Richard H. Gumpertz)
Subject:	b18 ctype.h isXXX and -Wall -pedantic
19 Nov 1997 10:42:50 -0800 :
Message-ID:	<34732839.2E89.cygnus.gnu-win32@cps.com>
Mime-Version:	1.0
To:	gnu-win32 AT cygnus DOT com

When I use isdigit (and similar isXXX macros) from b18 ctype.h and
compile with -Wall -pedantic, I get spurious warnings for each use
of the macro:
	"warning: subscript has type `char'"

An appropriate fix would probably be to replace
	(_ctype_+1)[c]
in each of the macros with either
	(_ctype_+1)[(int)(c)]
or
	_ctype_[1+(int)(c)]
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