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-rw-r--r--iconv/Makefile22
-rw-r--r--iconv/tst-iconv9.c87
2 files changed, 106 insertions, 3 deletions
diff --git a/iconv/Makefile b/iconv/Makefile
index 07d77c9eca..9993f2d3f3 100644
--- a/iconv/Makefile
+++ b/iconv/Makefile
@@ -43,8 +43,19 @@ CFLAGS-charmap.c += -DCHARMAP_PATH='"$(i18ndir)/charmaps"' \
 CFLAGS-linereader.c += -DNO_TRANSLITERATION
 CFLAGS-simple-hash.c += -I../locale
 
-tests	= tst-iconv1 tst-iconv2 tst-iconv3 tst-iconv4 tst-iconv5 tst-iconv6 \
-	  tst-iconv7 tst-iconv8 tst-iconv-mt tst-iconv-opt
+tests = \
+	tst-iconv1 \
+	tst-iconv2 \
+	tst-iconv3 \
+	tst-iconv4 \
+	tst-iconv5 \
+	tst-iconv6 \
+	tst-iconv7 \
+	tst-iconv8 \
+	tst-iconv9 \
+	tst-iconv-mt \
+	tst-iconv-opt \
+	# tests
 
 others		= iconv_prog iconvconfig
 install-others-programs	= $(inst_bindir)/iconv
@@ -83,10 +94,15 @@ endif
 include ../Rules
 
 ifeq ($(run-built-tests),yes)
-LOCALES := en_US.UTF-8
+# We have to generate locales (list sorted alphabetically)
+LOCALES := \
+	C.UTF-8 \
+	en_US.UTF-8 \
+	# LOCALES
 include ../gen-locales.mk
 
 $(objpfx)tst-iconv-opt.out: $(gen-locales)
+$(objpfx)tst-iconv9.out: $(gen-locales)
 endif
 
 $(inst_bindir)/iconv: $(objpfx)iconv_prog $(+force)
diff --git a/iconv/tst-iconv9.c b/iconv/tst-iconv9.c
new file mode 100644
index 0000000000..78a5324279
--- /dev/null
+++ b/iconv/tst-iconv9.c
@@ -0,0 +1,87 @@
+/* Verify that using C.UTF-8 works.
+
+   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 <iconv.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <support/support.h>
+#include <support/check.h>
+
+/* This test does two things:
+   (1) Verify that we have likely included translit_combining in C.UTF-8.
+   (2) Verify default_missing is '?' as expected.  */
+
+/* ISO-8859-1 encoding of "für".  */
+char iso88591_in[] = { 0x66, 0xfc, 0x72, 0x0 };
+/* ASCII transliteration is "fur" with C.UTF-8 translit_combining.  */
+char ascii_exp[] = { 0x66, 0x75, 0x72, 0x0 };
+
+/* First 3-byte UTF-8 code point.  */
+char utf8_in[] = { 0xe0, 0xa0, 0x80, 0x0 };
+/* There is no ASCII transliteration for SAMARITAN LETTER ALAF
+   so we get default_missing used which is '?'.  */
+char default_missing_exp[] = { 0x3f, 0x0 };
+
+static int
+do_test (void)
+{
+  char ascii_out[5];
+  iconv_t cd;
+  char *inbuf;
+  char *outbuf;
+  size_t inbytes;
+  size_t outbytes;
+  size_t n;
+
+  /* The C.UTF-8 locale should include translit_combining, which provides
+     the transliteration for "LATIN SMALL LETTER U WITH DIAERESIS" which
+     is not provided by locale/C-translit.h.in.  */
+  xsetlocale (LC_ALL, "C.UTF-8");
+
+  /* From ISO-8859-1 to ASCII. */
+  cd = iconv_open ("ASCII//TRANSLIT,IGNORE", "ISO-8859-1");
+  TEST_VERIFY (cd != (iconv_t) -1);
+  inbuf = iso88591_in;
+  inbytes = 3;
+  outbuf = ascii_out;
+  outbytes = 3;
+  n = iconv (cd, &inbuf, &inbytes, &outbuf, &outbytes);
+  TEST_VERIFY (n != -1);
+  *outbuf = '\0';
+  TEST_COMPARE_BLOB (ascii_out, 3, ascii_exp, 3);
+  TEST_VERIFY (iconv_close (cd) == 0);
+
+  /* From UTF-8 to ASCII. */
+  cd = iconv_open ("ASCII//TRANSLIT,IGNORE", "UTF-8");
+  TEST_VERIFY (cd != (iconv_t) -1);
+  inbuf = utf8_in;
+  inbytes = 3;
+  outbuf = ascii_out;
+  outbytes = 3;
+  n = iconv (cd, &inbuf, &inbytes, &outbuf, &outbytes);
+  TEST_VERIFY (n != -1);
+  *outbuf = '\0';
+  TEST_COMPARE_BLOB (ascii_out, 1, default_missing_exp, 1);
+  TEST_VERIFY (iconv_close (cd) == 0);
+
+  return 0;
+}
+
+#include <support/test-driver.c>