Mercurial > gnulib
view lib/wcstok-impl.h @ 40214:452ab00796c7
Fix undefined behaviour.
* lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to
'unsigned int', to avoid shift operations on 'int'.
* lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size.
* tests/test-count-leading-zeros.c (main): Use a random number that has
as many bits as TYPE, not only 2*15 or 2*31 bits.
* tests/test-count-trailing-zeros.c (main): Likewise.
* tests/test-count-one-bits.c (main): Likewise.
* tests/test-memmem.c: Don't include "null-ptr.h".
(main): Use zerosize_ptr() instead of null_ptr().
* modules/memmem-tests (Files): Remove tests/null-ptr.h.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 20:32:25 +0100 |
parents | b06060465f09 |
children |
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/* Split a wide string into tokens. Copyright (C) 1999, 2011-2019 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 1999. 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/>. */ wchar_t * wcstok (wchar_t *wcs, const wchar_t *delim, wchar_t **ptr) { if (wcs == NULL) { wcs = *ptr; if (wcs == NULL) return NULL; /* reminder that end of token sequence has been reached */ } /* Skip leading delimiters. */ wcs += wcsspn (wcs, delim); /* Found a token? */ if (*wcs == (wchar_t)'\0') { *ptr = NULL; return NULL; } /* Move past the token. */ { wchar_t *token_end = wcspbrk (wcs, delim); if (token_end) { /* NUL-terminate the token. */ *token_end = (wchar_t)'\0'; *ptr = token_end + 1; } else *ptr = NULL; } return wcs; }