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Lasse Collin
67ee70e8e0
* tests/test-bsearch.c (null_bsearch, main): Remove the #if from null_bsearch because having the same condition in main is enough. Move the comment explaining the #if from null_bsearch to main. * tests/test-memccpy.c (null_memccpy, main): Likewise. * tests/test-memchr.c (null_memchr, main): Likewise. * tests/test-memcmp.c (null_memcmp, main): Likewise. * tests/test-memcpy.c (null_memcpy, main): Likewise. * tests/test-memmove.c (null_memmove, main): Likewise. * tests/test-memset.c (null_memset, main): Likewise. * tests/test-memset_explicit.c (null_memset_explicit, main): Likewise. * tests/test-qsort.c (null_qsort, main): Likewise. * tests/test-strncat.c (null_strncat, main): Likewise. * tests/test-strncmp.c (null_strncmp, main): Likewise. * tests/test-strncpy.c (null_strncpy, main): Likewise. * tests/test-strndup.c (null_strndup, main): Likewise. * tests/test-wcsncat.c (null_wcsncat, main): Likewise. * tests/test-wcsncmp.c (null_wcsncmp, main): Likewise. * tests/test-wcsncpy.c (null_wcsncpy, main): Likewise.
105 lines
3.6 KiB
C
105 lines
3.6 KiB
C
/* Test of strncat() function.
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Copyright (C) 2010-2026 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
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#include <config.h>
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#include <string.h>
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#include "signature.h"
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SIGNATURE_CHECK (strncat, char *, (char *, const char *, size_t));
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#include <stdcountof.h>
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#include <stdlib.h>
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#include "zerosize-ptr.h"
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#include "macros.h"
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/* Test the prototype in <string.h> + compiler. */
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static char *
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null_strncat (char *s1, char const *s2, size_t n)
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{
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char *p = strncat (s1, s2, n);
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ASSERT (s2 == NULL);
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return p;
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}
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static char *(*volatile volatile_null_strncat) (char *, char const *, size_t)
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= null_strncat;
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/* Test the library, not the compiler+library. */
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static char *
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lib_strncat (char *s1, char const *s2, size_t n)
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{
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return strncat (s1, s2, n);
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}
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static char *(*volatile volatile_lib_strncat) (char *, char const *, size_t)
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= lib_strncat;
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#undef strncat
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#define strncat volatile_lib_strncat
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#define UNIT char
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#define U_STRNCAT strncat
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#define MAGIC ((char) 0xBA)
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#include "unistr/test-strncat.h"
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int
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main ()
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{
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/* Simple string. */
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{ /* "Grüß Gott. Здравствуйте! x=(-b±sqrt(b²-4ac))/(2a) 日本語,中文,한글"
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in UTF-8 encoding. */
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static const char input[] =
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{ 'G', 'r', (char) 0xC3, (char) 0xBC, (char) 0xC3, (char) 0x9F, ' ',
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'G', 'o', 't', 't', '.', ' ', (char) 0xD0, (char) 0x97, (char) 0xD0,
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(char) 0xB4, (char) 0xD1, (char) 0x80, (char) 0xD0, (char) 0xB0,
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(char) 0xD0, (char) 0xB2, (char) 0xD1, (char) 0x81, (char) 0xD1,
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(char) 0x82, (char) 0xD0, (char) 0xB2, (char) 0xD1, (char) 0x83,
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(char) 0xD0, (char) 0xB9, (char) 0xD1, (char) 0x82, (char) 0xD0,
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(char) 0xB5, '!', ' ', 'x', '=', '(', '-', 'b', (char) 0xC2,
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(char) 0xB1, 's', 'q', 'r', 't', '(', 'b', (char) 0xC2, (char) 0xB2,
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'-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')', ' ', ' ',
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(char) 0xE6, (char) 0x97, (char) 0xA5, (char) 0xE6, (char) 0x9C,
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(char) 0xAC, (char) 0xE8, (char) 0xAA, (char) 0x9E, ',', (char) 0xE4,
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(char) 0xB8, (char) 0xAD, (char) 0xE6, (char) 0x96, (char) 0x87, ',',
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(char) 0xED, (char) 0x95, (char) 0x9C, (char) 0xEA, (char) 0xB8,
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(char) 0x80, '\0'
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};
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check (input, countof (input));
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}
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/* Test zero-length operations on NULL pointers, allowed by
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<https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3322.pdf>.
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In GCC < 15 this is a builtin that has the nonnull attribute.
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Some glibc versions use the nonnull attribute, which breaks this test. */
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#if (! defined __GNUC__ || __GNUC__ >= 15 || defined __clang__) \
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&& (! defined __GLIBC__ || 2 < __GLIBC__ + (99 <= __GLIBC_MINOR__))
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# if 0 /* I think this is invalid, per ISO C 23 § 7.26.3.2. */
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ASSERT (strncat (NULL, "x", 0) == NULL);
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# endif
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{
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char y[2] = { 'x', '\0' };
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ASSERT (strncat (y, NULL, 0) == y);
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ASSERT (volatile_null_strncat (y, NULL, 0) == y);
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}
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#endif
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return test_exit_status;
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}
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