Mercurial > gnulib
view lib/dummy.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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/* A dummy file, to prevent empty libraries from breaking builds. Copyright (C) 2004, 2007, 2009-2019 Free Software Foundation, Inc. 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/>. */ /* Some systems, reportedly OpenBSD and Mac OS X, refuse to create libraries without any object files. You might get an error like: > ar cru .libs/libgl.a > ar: no archive members specified Compiling this file, and adding its object file to the library, will prevent the library from being empty. */ /* Some systems, such as Solaris with cc 5.0, refuse to work with libraries that don't export any symbol. You might get an error like: > cc ... libgnu.a > ild: (bad file) garbled symbol table in archive ../gllib/libgnu.a Compiling this file, and adding its object file to the library, will prevent the library from exporting no symbols. */ #ifdef __sun /* This declaration ensures that the library will export at least 1 symbol. */ int gl_dummy_symbol; #else /* This declaration is solely to ensure that after preprocessing this file is never empty. */ typedef int dummy; #endif