+/* Test the %m, %#m printf specifiers via asprintf.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <libc-diag.h>
+#include <stdio.h>
+#include <support/check.h>
+#include <support/support.h>
+
+/* GCC does not yet know about the %#m specifier. */
+DIAG_PUSH_NEEDS_COMMENT;
+DIAG_IGNORE_NEEDS_COMMENT (11, "-Wformat=");
+
+static int
+do_test (void)
+{
+ char buf[64];
+
+ errno = EINVAL;
+ TEST_COMPARE (sprintf (buf, "%m"), 16);
+ TEST_COMPARE_STRING (buf, "Invalid argument");
+
+ errno = EINVAL;
+ TEST_COMPARE (sprintf (buf, "%#m"), 6);
+ TEST_COMPARE_STRING (buf, "EINVAL");
+
+ errno = 0;
+ TEST_COMPARE (sprintf (buf, "%m"), 7);
+ TEST_COMPARE_STRING (buf, "Success");
+
+ errno = 0;
+ TEST_COMPARE (sprintf (buf, "%#m"), 1);
+ TEST_COMPARE_STRING (buf, "0");
+
+ errno = -1;
+ TEST_COMPARE (sprintf (buf, "%m"), 16);
+ TEST_COMPARE_STRING (buf, "Unknown error -1");
+
+ errno = -1;
+ TEST_COMPARE (sprintf (buf, "%#m"), 2);
+ TEST_COMPARE_STRING (buf, "-1");
+
+ errno = 1002003;
+ TEST_COMPARE (sprintf (buf, "%m"), 21);
+ TEST_COMPARE_STRING (buf, "Unknown error 1002003");
+
+ errno = 1002003;
+ TEST_COMPARE (sprintf (buf, "%#m"), 7);
+ TEST_COMPARE_STRING (buf, "1002003");
+
+ errno = EINVAL;
+ TEST_COMPARE (sprintf (buf, "%20m"), 20);
+ TEST_COMPARE_STRING (buf, " Invalid argument");
+
+ errno = EINVAL;
+ TEST_COMPARE (sprintf (buf, "%#20m"), 20);
+ TEST_COMPARE_STRING (buf, " EINVAL");
+
+ errno = EINVAL;
+ TEST_COMPARE (sprintf (buf, "%-20m"), 20);
+ TEST_COMPARE_STRING (buf, "Invalid argument ");
+
+ errno = EINVAL;
+ TEST_COMPARE (sprintf (buf, "%-#20m"), 20);
+ TEST_COMPARE_STRING (buf, "EINVAL ");
+
+ errno = 0;
+ TEST_COMPARE (sprintf (buf, "%-20m"), 20);
+ TEST_COMPARE_STRING (buf, "Success ");
+
+ errno = 0;
+ TEST_COMPARE (sprintf (buf, "%-#20m"), 20);
+ TEST_COMPARE_STRING (buf, "0 ");
+
+ return 0;
+}
+
+#include <support/test-driver.c>