c32toupper: Add tests.

* tests/test-c32toupper.sh: New file.
* tests/test-c32toupper.c: New file, based on tests/test-c32islower.c.
* modules/c32toupper-tests: New file.

2 files changed, 490 insertions, 0 deletions

diff --git a/tests/test-c32toupper.c b/tests/test-c32toupper.c
new file mode 100644
index 0000000000..37f0134de8
--- /dev/null
+++ b/tests/test-c32toupper.c
@@ -0,0 +1,448 @@
+/* Test of c32toupper() function.
+   Copyright (C) 2020-2023 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/>.  */
+
+#include <config.h>
+
+#include <uchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (c32toupper, wint_t, (wint_t));
+
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "macros.h"
+
+/* Representation of a multibyte character.  */
+#define MBCHAR_BUF_SIZE 6
+struct multibyte
+{
+  size_t nbytes;             /* number of bytes of current character, > 0 */
+  char buf[MBCHAR_BUF_SIZE]; /* room for the bytes */
+};
+
+/* Returns the value of c32toupper for the multibyte character s[0..n-1],
+   as a multibyte character.  */
+static struct multibyte
+for_character (const char *s, size_t n)
+{
+  mbstate_t state;
+  char32_t wc;
+  size_t ret;
+  struct multibyte result;
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  wc = (char32_t) 0xBADFACE;
+  ret = mbrtoc32 (&wc, s, n, &state);
+  ASSERT (ret == n);
+
+  wc = c32toupper (wc);
+  ASSERT (wc != WEOF);
+
+  memset (&state, '\0', sizeof (mbstate_t));
+  ret = c32rtomb (result.buf, wc, &state);
+  ASSERT (ret != 0);
+  if (ret == (size_t)(-1))
+    /* wc cannot be converted back to multibyte.  */
+    result.nbytes = 0;
+  else
+    {
+      ASSERT (ret <= MBCHAR_BUF_SIZE);
+      result.nbytes = ret;
+    }
+  return result;
+}
+
+int
+main (int argc, char *argv[])
+{
+  wint_t wc;
+  struct multibyte mb;
+  char buf[4];
+
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test WEOF.  */
+  wc = c32toupper (WEOF);
+  ASSERT (wc == WEOF);
+
+  /* Test single-byte characters.
+     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.
+   */
+#if defined __NetBSD__
+  /* towupper is broken in the zh_CN.GB18030 locale on NetBSD 9.0.
+     See <https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=57339>.  */
+  if (!(argc > 1 && argv[1][0] == '4'))
+#endif
+  {
+    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".  */
+          buf[0] = (unsigned char) c;
+          mb = for_character (buf, 1);
+          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 (mb.nbytes == 1);
+              ASSERT ((unsigned char) mb.buf[0] == (unsigned char) c - 'a' + 'A');
+              break;
+            default:
+              ASSERT (mb.nbytes == 1);
+              ASSERT ((unsigned char) mb.buf[0] == c);
+              break;
+            }
+          break;
+        }
+  }
+
+  if (argc > 1)
+    switch (argv[1][0])
+      {
+      case '0':
+        /* C locale; tested above.  */
+        return 0;
+
+      case '1':
+        /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          mb = for_character ("\262", 1);
+          ASSERT (mb.nbytes == 1);
+          ASSERT (memcmp (mb.buf, "\262", 1) == 0);
+        #if !(defined __GLIBC__ || defined __sun || defined __CYGWIN__)
+          /* U+00B5 MICRO SIGN */
+          mb = for_character ("\265", 1);
+          ASSERT (mb.nbytes == 1);
+          ASSERT (memcmp (mb.buf, "\265", 1) == 0);
+        #endif
+          /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
+          mb = for_character ("\311", 1);
+          ASSERT (mb.nbytes == 1);
+          ASSERT (memcmp (mb.buf, "\311", 1) == 0);
+          /* U+00DF LATIN SMALL LETTER SHARP S */
+          mb = for_character ("\337", 1);
+          ASSERT (mb.nbytes == 1);
+          ASSERT (memcmp (mb.buf, "\337", 1) == 0);
+          /* U+00E9 LATIN SMALL LETTER E WITH ACUTE */
+          mb = for_character ("\351", 1);
+          ASSERT (mb.nbytes == 1);
+          ASSERT (memcmp (mb.buf, "\311", 1) == 0);
+        #if !(defined __GLIBC__ || defined __DragonFly__ || defined __sun || defined __CYGWIN__ || (defined _WIN32 && !defined __CYGWIN__))
+          /* U+00FF LATIN SMALL LETTER Y WITH DIAERESIS */
+          mb = for_character ("\377", 1);
+          ASSERT (mb.nbytes == 1);
+          ASSERT (memcmp (mb.buf, "\377", 1) == 0);
+        #endif
+        }
+        return 0;
+
+      case '2':
+        /* Locale encoding is EUC-JP.  */
+        {
+          /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
+          mb = for_character ("\217\252\261", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\217\252\261", 3) == 0);
+        #if !defined __NetBSD__
+          /* U+00DF LATIN SMALL LETTER SHARP S */
+          mb = for_character ("\217\251\316", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\217\251\316", 3) == 0);
+        #endif
+        #if !((defined __APPLE__ && defined __MACH__) || defined __DragonFly__)
+          /* U+00E9 LATIN SMALL LETTER E WITH ACUTE */
+          mb = for_character ("\217\253\261", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\217\252\261", 3) == 0);
+        #endif
+        #if !((defined __APPLE__ && defined __MACH__) || defined __DragonFly__ || defined __NetBSD__)
+          /* U+00FF LATIN SMALL LETTER Y WITH DIAERESIS */
+          mb = for_character ("\217\253\363", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\217\252\363", 3) == 0);
+        #endif
+          /* U+0141 LATIN CAPITAL LETTER L WITH STROKE */
+          mb = for_character ("\217\251\250", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\217\251\250", 3) == 0);
+        #if !((defined __APPLE__ && defined __MACH__) || defined __DragonFly__)
+          /* U+0142 LATIN SMALL LETTER L WITH STROKE */
+          mb = for_character ("\217\251\310", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\217\251\250", 3) == 0);
+        #endif
+          /* U+0429 CYRILLIC CAPITAL LETTER SHCHA */
+          mb = for_character ("\247\273", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\247\273", 2) == 0);
+        #if !defined __DragonFly__
+          /* U+0449 CYRILLIC SMALL LETTER SHCHA */
+          mb = for_character ("\247\353", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\247\273", 2) == 0);
+        #endif
+          /* U+3073 HIRAGANA LETTER BI */
+          mb = for_character ("\244\323", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\244\323", 2) == 0);
+          /* U+FF27 FULLWIDTH LATIN CAPITAL LETTER G */
+          mb = for_character ("\243\307", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\243\307", 2) == 0);
+        #if !defined __DragonFly__
+          /* U+FF47 FULLWIDTH LATIN SMALL LETTER G */
+          mb = for_character ("\243\347", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\243\307", 2) == 0);
+        #endif
+        }
+        return 0;
+
+      case '3':
+        /* Locale encoding is UTF-8.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          mb = for_character ("\302\262", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\302\262", 2) == 0);
+        #if !(defined __GLIBC__ || (defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __DragonFly__ || defined __NetBSD__ || defined _AIX || defined __sun || defined __CYGWIN__)
+          /* U+00B5 MICRO SIGN */
+          mb = for_character ("\302\265", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\302\265", 2) == 0);
+        #endif
+          /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
+          mb = for_character ("\303\211", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\303\211", 2) == 0);
+          /* U+00DF LATIN SMALL LETTER SHARP S */
+          mb = for_character ("\303\237", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\303\237", 2) == 0);
+        #if !(defined _WIN32 && !defined __CYGWIN__)
+          /* U+00E9 LATIN SMALL LETTER E WITH ACUTE */
+          mb = for_character ("\303\251", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\303\211", 2) == 0);
+          /* U+00FF LATIN SMALL LETTER Y WITH DIAERESIS */
+          mb = for_character ("\303\277", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\305\270", 2) == 0);
+        #endif
+          /* U+0141 LATIN CAPITAL LETTER L WITH STROKE */
+          mb = for_character ("\305\201", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\305\201", 2) == 0);
+          /* U+0142 LATIN SMALL LETTER L WITH STROKE */
+          mb = for_character ("\305\202", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\305\201", 2) == 0);
+          /* U+0429 CYRILLIC CAPITAL LETTER SHCHA */
+          mb = for_character ("\320\251", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\320\251", 2) == 0);
+          /* U+0449 CYRILLIC SMALL LETTER SHCHA */
+          mb = for_character ("\321\211", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\320\251", 2) == 0);
+          /* U+05D5 HEBREW LETTER VAV */
+          mb = for_character ("\327\225", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\327\225", 2) == 0);
+          /* U+3073 HIRAGANA LETTER BI */
+          mb = for_character ("\343\201\263", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\343\201\263", 3) == 0);
+          /* U+3162 HANGUL LETTER YI */
+          mb = for_character ("\343\205\242", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\343\205\242", 3) == 0);
+          /* U+FF27 FULLWIDTH LATIN CAPITAL LETTER G */
+          mb = for_character ("\357\274\247", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\357\274\247", 3) == 0);
+          /* U+FF47 FULLWIDTH LATIN SMALL LETTER G */
+          mb = for_character ("\357\275\207", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\357\274\247", 3) == 0);
+          /* U+FFDB HALFWIDTH HANGUL LETTER YI */
+          mb = for_character ("\357\277\233", 3);
+          ASSERT (mb.nbytes == 3);
+          ASSERT (memcmp (mb.buf, "\357\277\233", 3) == 0);
+          /* U+10419 DESERET CAPITAL LETTER EF */
+          mb = for_character ("\360\220\220\231", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\360\220\220\231", 4) == 0);
+        #if !(defined __DragonFly__ || defined __sun)
+          /* U+10441 DESERET SMALL LETTER EF */
+          mb = for_character ("\360\220\221\201", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\360\220\220\231", 4) == 0);
+        #endif
+          /* U+E0041 TAG LATIN CAPITAL LETTER A */
+          mb = for_character ("\363\240\201\201", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\363\240\201\201", 4) == 0);
+          /* U+E0061 TAG LATIN SMALL LETTER A */
+          mb = for_character ("\363\240\201\241", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\363\240\201\241", 4) == 0);
+        }
+        return 0;
+
+      case '4':
+        /* Locale encoding is GB18030.  */
+        {
+          /* U+00B2 SUPERSCRIPT TWO */
+          mb = for_character ("\201\060\205\065", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\205\065", 4) == 0);
+        #if !(defined __GLIBC__ || (defined __APPLE__ && defined __MACH__) || defined __NetBSD__)
+          /* U+00B5 MICRO SIGN */
+          mb = for_character ("\201\060\205\070", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\205\070", 4) == 0);
+        #endif
+          /* U+00C9 LATIN CAPITAL LETTER E WITH ACUTE */
+          mb = for_character ("\201\060\207\067", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\207\067", 4) == 0);
+          /* U+00DF LATIN SMALL LETTER SHARP S */
+          mb = for_character ("\201\060\211\070", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\211\070", 4) == 0);
+        #if !(defined __FreeBSD__ || defined __DragonFly__ || defined __sun)
+          /* U+00E9 LATIN SMALL LETTER E WITH ACUTE */
+          mb = for_character ("\250\246", 2);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\207\067", 4) == 0);
+          /* U+00FF LATIN SMALL LETTER Y WITH DIAERESIS */
+          mb = for_character ("\201\060\213\067", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\227\060", 4) == 0);
+        #endif
+          /* U+0141 LATIN CAPITAL LETTER L WITH STROKE */
+          mb = for_character ("\201\060\221\071", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\221\071", 4) == 0);
+        #if !(defined __FreeBSD__ || defined __DragonFly__ || defined __sun)
+          /* U+0142 LATIN SMALL LETTER L WITH STROKE */
+          mb = for_character ("\201\060\222\060", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\221\071", 4) == 0);
+        #endif
+          /* U+0429 CYRILLIC CAPITAL LETTER SHCHA */
+          mb = for_character ("\247\273", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\247\273", 2) == 0);
+        #if !(defined __FreeBSD__ || defined __DragonFly__)
+          /* U+0449 CYRILLIC SMALL LETTER SHCHA */
+          mb = for_character ("\247\353", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\247\273", 2) == 0);
+        #endif
+          /* U+05D5 HEBREW LETTER VAV */
+          mb = for_character ("\201\060\371\067", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\060\371\067", 4) == 0);
+          /* U+3073 HIRAGANA LETTER BI */
+          mb = for_character ("\244\323", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\244\323", 2) == 0);
+          /* U+3162 HANGUL LETTER YI */
+          mb = for_character ("\201\071\256\062", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\201\071\256\062", 4) == 0);
+          /* U+FF27 FULLWIDTH LATIN CAPITAL LETTER G */
+          mb = for_character ("\243\307", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\243\307", 2) == 0);
+        #if !defined __DragonFly__
+          /* U+FF47 FULLWIDTH LATIN SMALL LETTER G */
+          mb = for_character ("\243\347", 2);
+          ASSERT (mb.nbytes == 2);
+          ASSERT (memcmp (mb.buf, "\243\307", 2) == 0);
+        #endif
+          /* U+FFDB HALFWIDTH HANGUL LETTER YI */
+          mb = for_character ("\204\061\241\071", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\204\061\241\071", 4) == 0);
+          /* U+10419 DESERET CAPITAL LETTER EF */
+          mb = for_character ("\220\060\351\071", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\220\060\351\071", 4) == 0);
+        #if !((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __DragonFly__ || defined __NetBSD__ || defined __sun)
+          /* U+10441 DESERET SMALL LETTER EF */
+          mb = for_character ("\220\060\355\071", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\220\060\351\071", 4) == 0);
+        #endif
+          /* U+E0041 TAG LATIN CAPITAL LETTER A */
+          mb = for_character ("\323\066\234\063", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\323\066\234\063", 4) == 0);
+          /* U+E0061 TAG LATIN SMALL LETTER A */
+          mb = for_character ("\323\066\237\065", 4);
+          ASSERT (mb.nbytes == 4);
+          ASSERT (memcmp (mb.buf, "\323\066\237\065", 4) == 0);
+        }
+        return 0;
+
+      }
+
+  return 1;
+}
diff --git a/tests/test-c32toupper.sh b/tests/test-c32toupper.sh
new file mode 100755
index 0000000000..1c253e5460
--- /dev/null
+++ b/tests/test-c32toupper.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+# Allow distinguishing the various invocations in the .log file.
+set -x
+
+# Test in the POSIX locale.
+LC_ALL=C     ${CHECKER} ./test-c32toupper${EXEEXT} 0 || exit 1
+LC_ALL=POSIX ${CHECKER} ./test-c32toupper${EXEEXT} 0 || exit 1
+
+# Test in an ISO-8859-1 or ISO-8859-15 locale.
+: "${LOCALE_FR=fr_FR}"
+if test $LOCALE_FR != none; then
+  LC_ALL=$LOCALE_FR \
+  ${CHECKER} ./test-c32toupper${EXEEXT} 1 \
+  || exit 1
+fi
+
+# Test whether a specific EUC-JP locale is installed.
+: "${LOCALE_JA=ja_JP}"
+if test $LOCALE_JA != none; then
+  LC_ALL=$LOCALE_JA \
+  ${CHECKER} ./test-c32toupper${EXEEXT} 2 \
+  || exit 1
+fi
+
+# Test whether a specific UTF-8 locale is installed.
+: "${LOCALE_FR_UTF8=fr_FR.UTF-8}"
+if test $LOCALE_FR_UTF8 != none; then
+  LC_ALL=$LOCALE_FR_UTF8 \
+  ${CHECKER} ./test-c32toupper${EXEEXT} 3 \
+  || exit 1
+fi
+
+# Test whether a specific GB18030 locale is installed.
+: "${LOCALE_ZH_CN=zh_CN.GB18030}"
+if test $LOCALE_ZH_CN != none; then
+  LC_ALL=$LOCALE_ZH_CN \
+  ${CHECKER} ./test-c32toupper${EXEEXT} 4 \
+  || exit 1
+fi
+
+exit 0