--- /dev/null
+/* Test of toupper_l() function.
+ Copyright (C) 2020-2025 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/>. */
+
+#include <config.h>
+
+#include <ctype.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (toupper_l, int, (int, locale_t));
+
+#include <locale.h>
+#include <stdio.h>
+
+#include "macros.h"
+
+static void
+test_single_locale_common (locale_t locale)
+{
+ int tc;
+
+ /* Test EOF. */
+ tc = toupper_l (EOF, locale);
+ ASSERT (tc == EOF);
+
+ /* POSIX specifies in
+ <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html>
+ that
+ - in all locales, the lowercase characters include the a ... z
+ characters, and the corresponding characters A ... Z (if not in a
+ Turkish locale) are uppercase,
+ - in the "POSIX" locale (which is usually the same as the "C" locale),
+ the lowercase characters include only the ASCII a ... z characters,
+ and the corresponding characters A ... Z are uppercase.
+ */
+ {
+ int c;
+
+ for (c = 0; c < 0x100; c++)
+ switch (c)
+ {
+ case '\t': case '\v': case '\f':
+ case ' ': case '!': case '"': case '#': case '%':
+ case '&': case '\'': case '(': case ')': case '*':
+ case '+': case ',': case '-': case '.': case '/':
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ case ':': case ';': case '<': case '=': case '>':
+ case '?':
+ case 'A': case 'B': case 'C': case 'D': case 'E':
+ case 'F': case 'G': case 'H': case 'I': case 'J':
+ case 'K': case 'L': case 'M': case 'N': case 'O':
+ case 'P': case 'Q': case 'R': case 'S': case 'T':
+ case 'U': case 'V': case 'W': case 'X': case 'Y':
+ case 'Z':
+ case '[': case '\\': case ']': case '^': case '_':
+ case 'a': case 'b': case 'c': case 'd': case 'e':
+ case 'f': case 'g': case 'h': case 'i': case 'j':
+ case 'k': case 'l': case 'm': case 'n': case 'o':
+ case 'p': case 'q': case 'r': case 's': case 't':
+ case 'u': case 'v': case 'w': case 'x': case 'y':
+ case 'z': case '{': case '|': case '}': case '~':
+ /* c is in the ISO C "basic character set". */
+ tc = toupper_l ((unsigned char) c, locale);
+ switch (c)
+ {
+ case 'a': case 'b': case 'c': case 'd': case 'e':
+ case 'f': case 'g': case 'h': case 'i': case 'j':
+ case 'k': case 'l': case 'm': case 'n': case 'o':
+ case 'p': case 'q': case 'r': case 's': case 't':
+ case 'u': case 'v': case 'w': case 'x': case 'y':
+ case 'z':
+ ASSERT (tc == (unsigned char) c - 'a' + 'A');
+ break;
+ default:
+ ASSERT (tc == c);
+ break;
+ }
+ break;
+ }
+ }
+}
+
+int
+main ()
+{
+ {
+ locale_t locale = newlocale (LC_ALL_MASK, "C", NULL);
+ ASSERT (locale != NULL);
+
+ test_single_locale_common (locale);
+
+ freelocale (locale);
+ }
+#if !MUSL_LIBC /* musl libc has no unibyte locales */
+ {
+# if defined _WIN32 && !defined __CYGWIN__
+ locale_t locale = newlocale (LC_ALL_MASK, "French_France.1252", NULL);
+# else
+ locale_t locale = newlocale (LC_ALL_MASK, "fr_FR.ISO-8859-1", NULL);
+ if (locale == NULL)
+ locale = newlocale (LC_ALL_MASK, "fr_FR.ISO8859-1", NULL);
+# endif
+ if (locale != NULL)
+ {
+ test_single_locale_common (locale);
+
+ /* Locale encoding is ISO-8859-1 or ISO-8859-15. */
+ int tc;
+
+ /* U+00B2 SUPERSCRIPT TWO */
+ tc = toupper_l ((unsigned char) '\262', locale);
+ ASSERT (tc == (unsigned char) '\262');
+ #if !(defined __GLIBC__ || (defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __NetBSD__ || defined __sun || defined __CYGWIN__ || (defined _WIN32 && !defined __CYGWIN__))
+ /* U+00B5 MICRO SIGN */
+ tc = toupper_l ((unsigned char) '\265', locale);
+ ASSERT (tc == (unsigned char) '\265');
+ #endif
+ /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
+ tc = toupper_l ((unsigned char) '\311', locale);
+ ASSERT (tc == (unsigned char) '\311');
+ /* U+00DF LATIN SMALL LETTER SHARP S */
+ tc = toupper_l ((unsigned char) '\337', locale);
+ ASSERT (tc == (unsigned char) '\337');
+ /* U+00E9 LATIN SMALL LETTER E WITH ACUTE */
+ tc = toupper_l ((unsigned char) '\351', locale);
+ ASSERT (tc == (unsigned char) '\311');
+ #if !(defined __GLIBC__ || (defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __DragonFly__ || defined __NetBSD__ || defined __sun || defined __CYGWIN__ || (defined _WIN32 && !defined __CYGWIN__))
+ /* U+00FF LATIN SMALL LETTER Y WITH DIAERESIS */
+ tc = toupper_l ((unsigned char) '\377', locale);
+ ASSERT (tc == (unsigned char) '\377');
+ #endif
+
+ freelocale (locale);
+ }
+ }
+#endif
+
+ return test_exit_status;
+}