* lib/memcasecmp.c: Include <limits.h>. (memcasecmp): Don't assume UCHAR_MAX <= INT_MAX. * lib/strtod.c (strtod): Don't assume isspace works on negative chars. Don't assume isdigit succeeds only on '0' through '9'. * lib/exclude.c (IN_CTYPE_DOMAIN, is_space): Remove; no longer needed. All uses of is_space replaced by isspace. * lib/fnmatch.c (ISASCII): Remove; no longer needed. All uses removed. (ISPRINT, ISDIGIT, ISALNUM, ISALPHA, ISCNTRL, ISLOWER, ISPUNCT): (ISSPACE, ISUPPER, ISXDIGIT): Remove; no longer needed. All uses replaced by isprint etc. * lib/getdate.y (IN_CTYPE_DOMAIN, ISSPACE, ISALPHA, ISLOWER): Likewise. * lib/getusershell.c (IN_CTYPE_DOMAIN, ISSPACE): Likewise. * lib/memcasecmp.c (IN_CTYPE_DOMAIN, ISLOWER, TOUPPER): Likewise. * lib/strtod.c (IN_CTYPE_DOMAIN, ISSPACE, ISDIGIT, TOLOWER): Likewise. * lib/strtol.c (IN_CTYPE_DOMAIN): Likewise. * lib/xstrtol.c (IN_CTYPE_DOMAIN, ISSPACE): Likewise. * m4/xstrtol.m4 (gl_PREREQ_XSTRTOL): Use AC_CHECK_DECLS_ONCE rather than AC_CHECK_DECLS for strtoimax and strtoumax. * m4/getusershell.m4 (gl_PREREQ_GETUSERSHELL): Remove; no longer needed. All uses removed. * m4/strtol.m4 (gl_PREREQ_STRTOL): Likewise. * m4/strtoul.m4 (gl_PREREQ_STRTOUL): Likewise. * m4/exclude.m4 (gl_EXCLUDE): Don't check for isascii; no longer needed. * m4/getdate.m4 (gl_GETDATE): Likewise. * m4/getusershell.m4 (gl_PREREQ_GETUSERSHELL): Likewise. * m4/memcasecmp.m4 (gl_MEMCASECMP): Likewise. * m4/strtod.m4 (gl_FUNC_STRTOD): Likewise. * m4/strtol.m4 (gl_PREREQ_STRTOL): Likewise. * m4/strtoul.m4 (gl_PREREQ_STRTOUL): Likewise. * m4/xstrtol.m4 (gl_PREREQ_XSTRTOL): Likewise. * m4/exclude.m4 (gl_EXCLUDE): Don't require AC_C_INLINE; no longer needed. * m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Don't require AC_HEADER_STDC; no longer needed. * m4/exclude.m4 (gl_EXCLUDE): Likewise. * m4/getdate.m4 (gl_GETDATE): Likewise. * m4/getusershell.m4 (gl_PREREQ_GETUSERSHELL): Likewise. * m4/memcasecmp.m4 (gl_MEMCASECMP): Likewise. * m4/strtod.m4 (gl_FUNC_STRTOD): Likewise. * m4/strtol.m4 (gl_PREREQ_STRTOL): Likewise. * m4/xstrtol.m4 (gl_PREREQ_XSTRTOL): Likewise.

--- a/lib/getusershell.c
+++ b/lib/getusershell.c
@@ -1,7 +1,7 @@
 /* getusershell.c -- Return names of valid user shells.
 
-   Copyright (C) 1991, 1997, 2000, 2001, 2003, 2004, 2005 Free Software
-   Foundation, Inc.
+   Copyright (C) 1991, 1997, 2000, 2001, 2003, 2004, 2005, 2006 Free
+   Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -43,14 +43,6 @@
 # include "unlocked-io.h"
 #endif
 
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
-
 static size_t readname (char **, size_t *, FILE *);
 
 #if ! defined ADDITIONAL_DEFAULT_SHELLS && defined __MSDOS__
@@ -152,14 +144,14 @@
   size_t name_index = 0;
 
   /* Skip blank space.  */
-  while ((c = getc (stream)) != EOF && ISSPACE (c))
+  while ((c = getc (stream)) != EOF && isspace (c))
     /* Do nothing. */ ;
 
   for (;;)
     {
       if (*size <= name_index)
 	*name = x2nrealloc (*name, size, sizeof **name);
-      if (c == EOF || ISSPACE (c))
+      if (c == EOF || isspace (c))
 	break;
       (*name)[name_index++] = c;
       c = getc (stream);