--- /dev/null
+/* Test of POSIX and GNU compatible vasprintf() and asprintf() functions.
+ Copyright (C) 2007-2023 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 <bruno@clisp.org>, 2023. */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static void
+test_function (int (*my_asprintf) (char **, const char *, ...))
+{
+ /* Test the support of the 'b' conversion specifier for binary output of
+ integers. */
+
+ { /* Zero. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%b %d", 0, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "0 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* A positive number. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* A large positive number. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%b %d", 0xFFFFFFFEU, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "11111111111111111111111111111110 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Width. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, " 11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Width given as argument. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%*b %d", 20, 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, " 11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Negative width given as argument (cf. FLAG_LEFT below). */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%*b %d", -20, 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Precision. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%.20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "00000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Zero precision and a positive number. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%.0b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Zero precision and a zero number. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%.0b %d", 0, 33, 44, 55);
+ ASSERT (result != NULL);
+ /* ISO C and POSIX specify that "The result of converting a zero value
+ with a precision of zero is no characters." */
+ ASSERT (strcmp (result, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Width and precision. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%25.20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, " 00000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* Padding and precision. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%025.20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ /* Neither ISO C nor POSIX specify that the '0' flag is ignored when
+ a width and a precision are both present. But implementations do so. */
+ ASSERT (strcmp (result, " 00000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_LEFT. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%-20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with zero. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%#b %d", 0, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "0 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a positive number. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%#b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "0b11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a positive number and width. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%#20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, " 0b11000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a positive number and padding. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%0#20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "0b000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a positive number and precision. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%0#.20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, "0b00000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a positive number and width and precision. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%#25.20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ ASSERT (strcmp (result, " 0b00000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a positive number and padding and precision. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%0#25.20b %d", 12345, 33, 44, 55);
+ ASSERT (result != NULL);
+ /* Neither ISO C nor POSIX specify that the '0' flag is ignored when
+ a width and a precision are both present. But implementations do so. */
+ ASSERT (strcmp (result, " 0b00000011000000111001 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+
+ { /* FLAG_ALT with a zero precision and a zero number. */
+ char *result;
+ int retval =
+ my_asprintf (&result, "%#.0b %d", 0, 33, 44, 55);
+ ASSERT (result != NULL);
+ /* ISO C and POSIX specify that "The result of converting a zero value
+ with a precision of zero is no characters.", and the prefix is added
+ only for non-zero values. */
+ ASSERT (strcmp (result, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ free (result);
+ }
+}
+
+static int
+my_asprintf (char **result, const char *format, ...)
+{
+ va_list args;
+ int ret;
+
+ va_start (args, format);
+ ret = vasprintf (result, format, args);
+ va_end (args);
+ return ret;
+}
+
+static void
+test_vasprintf ()
+{
+ test_function (my_asprintf);
+}
+
+static void
+test_asprintf ()
+{
+ test_function (asprintf);
+}
+
+int
+main (int argc, char *argv[])
+{
+ test_vasprintf ();
+ test_asprintf ();
+ return 0;
+}