Mercurial > gnulib
view lib/mbsrtowcs-state.c @ 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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/* Convert string to wide string. Copyright (C) 2008-2019 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2008. 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/>. */ #include <config.h> #include <wchar.h> /* Internal state used by the functions mbsrtowcs() and mbsnrtowcs(). */ mbstate_t _gl_mbsrtowcs_state /* The state must initially be in the "initial state"; so, zero-initialize it. On most systems, putting it into BSS is sufficient. Not so on Mac OS X 10.3, see <https://lists.gnu.org/r/bug-gnulib/2009-01/msg00329.html>. When it needs an initializer, use 0 or {0} as initializer? 0 only works when mbstate_t is a scalar type (such as when gnulib defines it, or on AIX, IRIX, mingw). {0} works as an initializer in all cases: for a struct or union type, but also for a scalar type (ISO C 99, 6.7.8.(11)). */ #if defined __ELF__ /* On ELF systems, variables in BSS behave well. */ #else /* Use braces, to be on the safe side. */ = { 0 } #endif ;