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Diffstat (limited to 'wcsmbs/tst-c16-surrogate.c')
| -rw-r--r-- | wcsmbs/tst-c16-surrogate.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/wcsmbs/tst-c16-surrogate.c b/wcsmbs/tst-c16-surrogate.c new file mode 100644 index 0000000000..6a87ff8206 --- /dev/null +++ b/wcsmbs/tst-c16-surrogate.c @@ -0,0 +1,89 @@ +/* Test c16rtomb handling of surrogate pairs (DR#488, bug 23794). + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <locale.h> +#include <stdio.h> +#include <string.h> +#include <uchar.h> +#include <wchar.h> +#include <array_length.h> +#include <support/check.h> + +static int +do_test (void) +{ + TEST_VERIFY_EXIT (setlocale (LC_ALL, "de_DE.UTF-8") != NULL); + /* Test conversions of surrogate pairs. */ + for (char32_t c = 0x10000; c <= 0x10ffff; c += 0x123) + { + char32_t c_pos = c - 0x10000; + char16_t c_hi = (c_pos >> 10) + 0xd800; + char16_t c_lo = (c_pos & 0x3ff) + 0xdc00; + printf ("testing U+0x%08x (0x%x 0x%x)\n", + (unsigned int) c, (unsigned int) c_hi, (unsigned int) c_lo); + char buf[16] = { 0 }; + size_t ret_hi = c16rtomb (buf, c_hi, NULL); + TEST_COMPARE (ret_hi, 0); + size_t ret_lo = c16rtomb (buf, c_lo, NULL); + TEST_COMPARE (ret_lo, 4); + wchar_t wc = 0; + size_t ret_wc = mbrtowc (&wc, buf, 4, NULL); + TEST_COMPARE (ret_wc, 4); + TEST_COMPARE (wc, (wchar_t) c); + } + /* Test errors for invalid conversions. */ + static const char16_t err_cases[][2] = + { + /* High surrogate followed by non-surrogate. */ + { 0xd800, 0x1 }, + /* High surrogate followed by another high surrogate. */ + { 0xd800, 0xd800 }, + /* Low surrogate not following high surrogate. */ + { 0xdc00, 0 } + }; + for (size_t i = 0; i < array_length (err_cases); i++) + { + char16_t c_hi = err_cases[i][0]; + char16_t c_lo = err_cases[i][1]; + printf ("testing error case: 0x%x 0x%x\n", (unsigned int) c_hi, + (unsigned int) c_lo); + c16rtomb (NULL, 0, NULL); + char buf[16] = { 0 }; + errno = 0; + size_t ret_hi = c16rtomb (buf, c_hi, NULL); + if (c_lo == 0) + { + /* Unmatched low surrogate in first place. */ + TEST_COMPARE (ret_hi, (size_t) -1); + TEST_COMPARE (errno, EILSEQ); + } + else + { + /* High surrogate; error in second place. */ + TEST_COMPARE (ret_hi, 0); + errno = 0; + size_t ret_lo = c16rtomb (buf, c_lo, NULL); + TEST_COMPARE (ret_lo, (size_t) -1); + TEST_COMPARE (errno, EILSEQ); + } + } + return 0; +} + +#include <support/test-driver.c> |