* tests/test-nullptr.c: New file.
* modules/c-nullptr-tests: New file.
* tests/test-nullptr-c++.cc: New file.
* modules/c-nullptr-c++-tests: New file.
+2023-02-05 Bruno Haible <bruno@clisp.org>
+
+ c-nullptr: Add tests.
+ * tests/test-nullptr.c: New file.
+ * modules/c-nullptr-tests: New file.
+ * tests/test-nullptr-c++.cc: New file.
+ * modules/c-nullptr-c++-tests: New file.
+
2023-02-05 Paul Eggert <eggert@cs.ucla.edu>
sh-quote: backport fix from diffutils
--- /dev/null
+Files:
+tests/test-nullptr-c++.cc
+
+Status:
+c++-test
+
+Depends-on:
+ansi-c++-opt
+
+configure.ac:
+
+Makefile.am:
+if ANSICXX
+TESTS += test-nullptr-c++
+check_PROGRAMS += test-nullptr-c++
+test_nullptr_c___SOURCES = test-nullptr-c++.cc
+endif
--- /dev/null
+Files:
+tests/test-nullptr.c
+tests/macros.h
+
+Depends-on:
+c-nullptr-c++-tests
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-nullptr
+check_PROGRAMS += test-nullptr
--- /dev/null
+/* Test nullptr in C++ mode.
+ Copyright 2023 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 <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible. */
+
+#include <config.h>
+
+/* Check that nullptr is defined. */
+int *my_null = nullptr;
+
+/* Check against conflicts between <config.h> and the C++ header files. */
+#include <iostream>
+#include <vector>
+
+#include <stdarg.h>
+
+#include "macros.h"
+
+void
+varargs_callee (const char *first, ...)
+{
+ va_list args;
+ const char *arg;
+
+ ASSERT (first[0] == 't');
+ va_start (args, first);
+
+ arg = va_arg (args, const char *);
+ ASSERT (arg == NULL);
+
+ arg = va_arg (args, const char *);
+ ASSERT (arg[0] == 'f');
+
+ arg = va_arg (args, const char *);
+ ASSERT (arg == NULL);
+
+ va_end (args);
+}
+
+int
+main ()
+{
+ varargs_callee ("type", nullptr, "foo", nullptr);
+}
--- /dev/null
+/* Test nullptr.
+ Copyright 2023 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 <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible. */
+
+#include <config.h>
+
+int *my_null = nullptr;
+
+#if 0 /* not yet */
+/* Header that is supposed to define nullptr_t. */
+# include <stddef.h>
+#endif
+
+#include <stdarg.h>
+
+#include "macros.h"
+
+#if 0 /* not yet */
+
+static void
+simple_callee (nullptr_t x)
+{
+ ASSERT (x == NULL);
+}
+
+#endif
+
+void
+varargs_callee (const char *first, ...)
+{
+ va_list args;
+ const char *arg;
+
+ ASSERT (first[0] == 't');
+ va_start (args, first);
+
+ arg = va_arg (args, const char *);
+ ASSERT (arg == NULL);
+
+ arg = va_arg (args, const char *);
+ ASSERT (arg[0] == 'f');
+
+ arg = va_arg (args, const char *);
+ ASSERT (arg == NULL);
+
+ va_end (args);
+}
+
+int
+main ()
+{
+ varargs_callee ("type", nullptr, "foo", nullptr);
+
+ return 0;
+}