iconvdata/bug-iconv14.c

   1 /* Assertion in ISO-2022-JP-3 due to two-character sequence (bug 27256).
   2    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <iconv.h>
  20 #include <string.h>
  21 #include <errno.h>
  22 #include <support/check.h>
  23
  24 /* Use an escape sequence to return to the initial state.  */
  25 static void
  26 with_escape_sequence (void)
  27 {
  28   iconv_t c = iconv_open ("UTF-8", "ISO-2022-JP-3");
  29   TEST_VERIFY_EXIT (c != (iconv_t) -1);
  30
  31   char in[] = "\e$(O+D\e(B";
  32   char *inbuf = in;
  33   size_t inleft = strlen (in);
  34   char out[3];                  /* Space for one output character.  */
  35   char *outbuf;
  36   size_t outleft;
  37
  38   outbuf = out;
  39   outleft = sizeof (out);
  40   TEST_COMPARE (iconv (c, &inbuf, &inleft, &outbuf, &outleft), (size_t) -1);
  41   TEST_COMPARE (errno, E2BIG);
  42   TEST_COMPARE (inleft, 3);
  43   TEST_COMPARE (inbuf - in, strlen (in) - 3);
  44   TEST_COMPARE (outleft, sizeof (out) - 2);
  45   TEST_COMPARE (outbuf - out, 2);
  46   TEST_COMPARE (out[0] & 0xff, 0xc3);
  47   TEST_COMPARE (out[1] & 0xff, 0xa6);
  48
  49   /* Return to the initial shift state, producing the pending
  50      character.  */
  51   outbuf = out;
  52   outleft = sizeof (out);
  53   TEST_COMPARE (iconv (c, &inbuf, &inleft, &outbuf, &outleft), 0);
  54   TEST_COMPARE (inleft, 0);
  55   TEST_COMPARE (inbuf - in, strlen (in));
  56   TEST_COMPARE (outleft, sizeof (out) - 2);
  57   TEST_COMPARE (outbuf - out, 2);
  58   TEST_COMPARE (out[0] & 0xff, 0xcc);
  59   TEST_COMPARE (out[1] & 0xff, 0x80);
  60
  61   /* Nothing should be flushed the second time.  */
  62   outbuf = out;
  63   outleft = sizeof (out);
  64   TEST_COMPARE (iconv (c, NULL, 0, &outbuf, &outleft), 0);
  65   TEST_COMPARE (outleft, sizeof (out));
  66   TEST_COMPARE (outbuf - out, 0);
  67   TEST_COMPARE (out[0] & 0xff, 0xcc);
  68   TEST_COMPARE (out[1] & 0xff, 0x80);
  69
  70   TEST_COMPARE (iconv_close (c), 0);
  71 }
  72
  73 /* Use an explicit flush to return to the initial state.  */
  74 static void
  75 with_flush (void)
  76 {
  77   iconv_t c = iconv_open ("UTF-8", "ISO-2022-JP-3");
  78   TEST_VERIFY_EXIT (c != (iconv_t) -1);
  79
  80   char in[] = "\e$(O+D";
  81   char *inbuf = in;
  82   size_t inleft = strlen (in);
  83   char out[3];                  /* Space for one output character.  */
  84   char *outbuf;
  85   size_t outleft;
  86
  87   outbuf = out;
  88   outleft = sizeof (out);
  89   TEST_COMPARE (iconv (c, &inbuf, &inleft, &outbuf, &outleft), (size_t) -1);
  90   TEST_COMPARE (errno, E2BIG);
  91   TEST_COMPARE (inleft, 0);
  92   TEST_COMPARE (inbuf - in, strlen (in));
  93   TEST_COMPARE (outleft, sizeof (out) - 2);
  94   TEST_COMPARE (outbuf - out, 2);
  95   TEST_COMPARE (out[0] & 0xff, 0xc3);
  96   TEST_COMPARE (out[1] & 0xff, 0xa6);
  97
  98   /* Flush the pending character.  */
  99   outbuf = out;
 100   outleft = sizeof (out);
 101   TEST_COMPARE (iconv (c, NULL, 0, &outbuf, &outleft), 0);
 102   TEST_COMPARE (outleft, sizeof (out) - 2);
 103   TEST_COMPARE (outbuf - out, 2);
 104   TEST_COMPARE (out[0] & 0xff, 0xcc);
 105   TEST_COMPARE (out[1] & 0xff, 0x80);
 106
 107   /* Nothing should be flushed the second time.  */
 108   outbuf = out;
 109   outleft = sizeof (out);
 110   TEST_COMPARE (iconv (c, NULL, 0, &outbuf, &outleft), 0);
 111   TEST_COMPARE (outleft, sizeof (out));
 112   TEST_COMPARE (outbuf - out, 0);
 113   TEST_COMPARE (out[0] & 0xff, 0xcc);
 114   TEST_COMPARE (out[1] & 0xff, 0x80);
 115
 116   TEST_COMPARE (iconv_close (c), 0);
 117 }
 118
 119 static int
 120 do_test (void)
 121 {
 122   with_escape_sequence ();
 123   with_flush ();
 124   return 0;
 125 }
 126
 127 #include <support/test-driver.c>