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119 lines
3.4 KiB
C
119 lines
3.4 KiB
C
/* Test of <stdbool.h> substitute.
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Copyright (C) 2002-2007, 2009-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
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/* We want this test to succeed even when using gcc's -Werror; but to
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do that requires a pragma that didn't exist before 4.3.0. */
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#ifndef __GNUC__
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# define ADDRESS_CHECK_OKAY
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#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
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/* No way to silence -Waddress. */
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#else
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# pragma GCC diagnostic ignored "-Waddress"
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# define ADDRESS_CHECK_OKAY
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#endif
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#include <config.h>
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#include <stdbool.h>
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#ifndef bool
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"error: bool is not defined"
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#endif
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#ifndef false
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"error: false is not defined"
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#endif
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#if false
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"error: false is not 0"
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#endif
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#ifndef true
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"error: true is not defined"
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#endif
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#if true != 1
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"error: true is not 1"
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#endif
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#ifndef __bool_true_false_are_defined
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"error: __bool_true_false_are_defined is not defined"
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#endif
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/* Several tests cannot be guaranteed with gnulib's <stdbool.h>, at
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least, not for all compilers and compiler options. */
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#if HAVE_STDBOOL_H || 3 <= __GNUC__
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struct s { _Bool s: 1; _Bool t; } s;
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#endif
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char a[true == 1 ? 1 : -1];
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char b[false == 0 ? 1 : -1];
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char c[__bool_true_false_are_defined == 1 ? 1 : -1];
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#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above. */
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char d[(bool) 0.5 == true ? 1 : -1];
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# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning. */
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/* C99 may plausibly be interpreted as not requiring support for a cast from
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a variable's address to bool in a static initializer. So treat it like a
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GCC extension. */
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# ifdef __GNUC__
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bool e = &s;
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# endif
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# endif
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char f[(_Bool) 0.0 == false ? 1 : -1];
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#endif
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char g[true];
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char h[sizeof (_Bool)];
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#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above. */
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char i[sizeof s.t];
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#endif
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enum { j = false, k = true, l = false * true, m = true * 256 };
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_Bool n[m];
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char o[sizeof n == m * sizeof n[0] ? 1 : -1];
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char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
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/* Catch a bug in an HP-UX C compiler. See
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http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
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http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
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*/
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_Bool q = true;
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_Bool *pq = &q;
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int
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main ()
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{
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int error = 0;
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#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above. */
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# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning. */
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/* A cast from a variable's address to bool is valid in expressions. */
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{
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bool e1 = &s;
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if (!e1)
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error = 1;
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}
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# endif
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#endif
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/* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
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reported by James Lemley on 2005-10-05; see
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http://lists.gnu.org/archive/html/bug-coreutils/2005-10/msg00086.html
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This is a runtime test, since a corresponding compile-time
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test would rely on initializer extensions. */
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{
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char digs[] = "0123456789";
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if (&(digs + 5)[-2 + (bool) 1] != &digs[4])
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error = 1;
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}
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return error;
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}
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