summaryrefslogtreecommitdiff
path: root/tests/test-stdbool.c
diff options
context:
space:
mode:
Diffstat (limited to 'tests/test-stdbool.c')
-rw-r--r--tests/test-stdbool.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/tests/test-stdbool.c b/tests/test-stdbool.c
new file mode 100644
index 0000000..e115ba2
--- /dev/null
+++ b/tests/test-stdbool.c
@@ -0,0 +1,118 @@
+/* Test of <stdbool.h> substitute.
+ Copyright (C) 2002-2007, 2009-2011 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
+
+/* We want this test to succeed even when using gcc's -Werror; but to
+ do that requires a pragma that didn't exist before 4.3.0. */
+#ifndef __GNUC__
+# define ADDRESS_CHECK_OKAY
+#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
+/* No way to silence -Waddress. */
+#else
+# pragma GCC diagnostic ignored "-Waddress"
+# define ADDRESS_CHECK_OKAY
+#endif
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#ifndef bool
+ "error: bool is not defined"
+#endif
+#ifndef false
+ "error: false is not defined"
+#endif
+#if false
+ "error: false is not 0"
+#endif
+#ifndef true
+ "error: true is not defined"
+#endif
+#if true != 1
+ "error: true is not 1"
+#endif
+#ifndef __bool_true_false_are_defined
+ "error: __bool_true_false_are_defined is not defined"
+#endif
+
+/* Several tests cannot be guaranteed with gnulib's <stdbool.h>, at
+ least, not for all compilers and compiler options. */
+#if HAVE_STDBOOL_H || 3 <= __GNUC__
+struct s { _Bool s: 1; _Bool t; } s;
+#endif
+
+char a[true == 1 ? 1 : -1];
+char b[false == 0 ? 1 : -1];
+char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above. */
+char d[(bool) 0.5 == true ? 1 : -1];
+# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning. */
+/* C99 may plausibly be interpreted as not requiring support for a cast from
+ a variable's address to bool in a static initializer. So treat it like a
+ GCC extension. */
+# ifdef __GNUC__
+bool e = &s;
+# endif
+# endif
+char f[(_Bool) 0.0 == false ? 1 : -1];
+#endif
+char g[true];
+char h[sizeof (_Bool)];
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above. */
+char i[sizeof s.t];
+#endif
+enum { j = false, k = true, l = false * true, m = true * 256 };
+_Bool n[m];
+char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+/* Catch a bug in an HP-UX C compiler. See
+ http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+ http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
+ */
+_Bool q = true;
+_Bool *pq = &q;
+
+int
+main ()
+{
+ int error = 0;
+
+#if HAVE_STDBOOL_H || 3 <= __GNUC__ /* See above. */
+# ifdef ADDRESS_CHECK_OKAY /* Avoid gcc warning. */
+ /* A cast from a variable's address to bool is valid in expressions. */
+ {
+ bool e1 = &s;
+ if (!e1)
+ error = 1;
+ }
+# endif
+#endif
+
+ /* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
+ reported by James Lemley on 2005-10-05; see
+ http://lists.gnu.org/archive/html/bug-coreutils/2005-10/msg00086.html
+ This is a runtime test, since a corresponding compile-time
+ test would rely on initializer extensions. */
+ {
+ char digs[] = "0123456789";
+ if (&(digs + 5)[-2 + (bool) 1] != &digs[4])
+ error = 1;
+ }
+
+ return error;
+}