# Check for stdbool.h that conforms to C99.
-# Copyright (C) 2002-2003 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
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+dnl Copyright (C) 2002-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
# Prepare for substituting <stdbool.h> if it is not supported.
AC_SUBST([HAVE__BOOL])
])
-# This macro is only needed in autoconf <= 2.54. Newer versions of autoconf
+# This macro is only needed in autoconf <= 2.59. Newer versions of autoconf
# have this macro built-in.
AC_DEFUN([AC_HEADER_STDBOOL],
"error: false is not 0"
#endif
#ifndef true
- "error: false is not defined"
+ "error: true is not defined"
#endif
#if true != 1
"error: true is not 1"
char g[true];
char h[sizeof (_Bool)];
char i[sizeof s.t];
+ enum { j = false, k = true, l = false * true, m = true * 256 };
+ _Bool n[m];
+ char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+ ],
+ [
+ return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !j + !k + !l
+ + !m + !n + !o);
],
- [ return !a + !b + !c + !d + !e + !f + !g + !h + !i; ],
[ac_cv_header_stdbool_h=yes],
[ac_cv_header_stdbool_h=no])])
AC_CHECK_TYPES([_Bool])