525 lines
22 KiB
C++
525 lines
22 KiB
C++
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
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/* Substitute for and wrapper around <sys/ioctl.h>.
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Copyright (C) 2008-2020 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, or (at your option)
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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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#ifndef _GL_SYS_IOCTL_H
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#if __GNUC__ >= 3
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#pragma GCC system_header
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#endif
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/* The include_next requires a split double-inclusion guard. */
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#if 1
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# include_next <sys/ioctl.h>
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#endif
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#ifndef _GL_SYS_IOCTL_H
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#define _GL_SYS_IOCTL_H
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/* AIX 5.1 and Solaris 10 declare ioctl() in <unistd.h> and in <stropts.h>,
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but not in <sys/ioctl.h>.
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Haiku declares ioctl() in <unistd.h>, but not in <sys/ioctl.h>.
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But avoid namespace pollution on glibc systems. */
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#ifndef __GLIBC__
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# include <unistd.h>
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#endif
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/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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/* C++ compatible function declaration macros.
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Copyright (C) 2010-2020 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by 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 GNU
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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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#ifndef _GL_CXXDEFS_H
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#define _GL_CXXDEFS_H
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/* Begin/end the GNULIB_NAMESPACE namespace. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
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# define _GL_END_NAMESPACE }
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#else
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# define _GL_BEGIN_NAMESPACE
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# define _GL_END_NAMESPACE
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#endif
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/* The three most frequent use cases of these macros are:
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* For providing a substitute for a function that is missing on some
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platforms, but is declared and works fine on the platforms on which
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it exists:
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#if @GNULIB_FOO@
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# if !@HAVE_FOO@
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_GL_FUNCDECL_SYS (foo, ...);
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# endif
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_GL_CXXALIAS_SYS (foo, ...);
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_GL_CXXALIASWARN (foo);
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#elif defined GNULIB_POSIXCHECK
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...
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#endif
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* For providing a replacement for a function that exists on all platforms,
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but is broken/insufficient and needs to be replaced on some platforms:
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#if @GNULIB_FOO@
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# if @REPLACE_FOO@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef foo
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# define foo rpl_foo
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# endif
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_GL_FUNCDECL_RPL (foo, ...);
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_GL_CXXALIAS_RPL (foo, ...);
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# else
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_GL_CXXALIAS_SYS (foo, ...);
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# endif
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_GL_CXXALIASWARN (foo);
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#elif defined GNULIB_POSIXCHECK
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...
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#endif
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* For providing a replacement for a function that exists on some platforms
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but is broken/insufficient and needs to be replaced on some of them and
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is additionally either missing or undeclared on some other platforms:
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#if @GNULIB_FOO@
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# if @REPLACE_FOO@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef foo
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# define foo rpl_foo
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# endif
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_GL_FUNCDECL_RPL (foo, ...);
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_GL_CXXALIAS_RPL (foo, ...);
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# else
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# if !@HAVE_FOO@ or if !@HAVE_DECL_FOO@
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_GL_FUNCDECL_SYS (foo, ...);
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# endif
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_GL_CXXALIAS_SYS (foo, ...);
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# endif
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_GL_CXXALIASWARN (foo);
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#elif defined GNULIB_POSIXCHECK
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...
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#endif
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*/
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/* _GL_EXTERN_C declaration;
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performs the declaration with C linkage. */
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#if defined __cplusplus
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# define _GL_EXTERN_C extern "C"
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#else
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# define _GL_EXTERN_C extern
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#endif
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/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
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declares a replacement function, named rpl_func, with the given prototype,
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consisting of return type, parameters, and attributes.
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Example:
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_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
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_GL_ARG_NONNULL ((1)));
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*/
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#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
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_GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
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#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
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_GL_EXTERN_C rettype rpl_func parameters_and_attributes
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/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
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declares the system function, named func, with the given prototype,
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consisting of return type, parameters, and attributes.
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Example:
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_GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
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_GL_ARG_NONNULL ((1)));
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*/
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#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
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_GL_EXTERN_C rettype func parameters_and_attributes
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/* _GL_CXXALIAS_RPL (func, rettype, parameters);
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declares a C++ alias called GNULIB_NAMESPACE::func
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that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
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Example:
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_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
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Wrapping rpl_func in an object with an inline conversion operator
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avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
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actually used in the program. */
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#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
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_GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
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namespace GNULIB_NAMESPACE \
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{ \
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static const struct _gl_ ## func ## _wrapper \
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{ \
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typedef rettype (*type) parameters; \
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\
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inline operator type () const \
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{ \
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return ::rpl_func; \
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} \
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} func = {}; \
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} \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#else
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# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
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is like _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
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except that the C function rpl_func may have a slightly different
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declaration. A cast is used to silence the "invalid conversion" error
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that would otherwise occur. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
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namespace GNULIB_NAMESPACE \
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{ \
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static const struct _gl_ ## func ## _wrapper \
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{ \
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typedef rettype (*type) parameters; \
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\
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inline operator type () const \
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{ \
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return reinterpret_cast<type>(::rpl_func); \
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} \
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} func = {}; \
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} \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#else
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# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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/* _GL_CXXALIAS_SYS (func, rettype, parameters);
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declares a C++ alias called GNULIB_NAMESPACE::func
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that redirects to the system provided function func, if GNULIB_NAMESPACE
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is defined.
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Example:
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_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
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Wrapping func in an object with an inline conversion operator
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avoids a reference to func unless GNULIB_NAMESPACE::func is
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actually used in the program. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
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namespace GNULIB_NAMESPACE \
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{ \
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static const struct _gl_ ## func ## _wrapper \
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{ \
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typedef rettype (*type) parameters; \
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\
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inline operator type () const \
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{ \
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return ::func; \
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} \
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} func = {}; \
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} \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#else
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# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
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is like _GL_CXXALIAS_SYS (func, rettype, parameters);
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except that the C function func may have a slightly different declaration.
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A cast is used to silence the "invalid conversion" error that would
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otherwise occur. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
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namespace GNULIB_NAMESPACE \
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{ \
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static const struct _gl_ ## func ## _wrapper \
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{ \
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typedef rettype (*type) parameters; \
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\
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inline operator type () const \
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{ \
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return reinterpret_cast<type>(::func); \
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} \
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} func = {}; \
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} \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#else
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# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
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is like _GL_CXXALIAS_SYS (func, rettype, parameters);
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except that the C function is picked among a set of overloaded functions,
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namely the one with rettype2 and parameters2. Two consecutive casts
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are used to silence the "cannot find a match" and "invalid conversion"
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errors that would otherwise occur. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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/* The outer cast must be a reinterpret_cast.
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The inner cast: When the function is defined as a set of overloaded
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functions, it works as a static_cast<>, choosing the designated variant.
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When the function is defined as a single variant, it works as a
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reinterpret_cast<>. The parenthesized cast syntax works both ways. */
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# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
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namespace GNULIB_NAMESPACE \
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{ \
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static const struct _gl_ ## func ## _wrapper \
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{ \
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typedef rettype (*type) parameters; \
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\
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inline operator type () const \
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{ \
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return reinterpret_cast<type>((rettype2 (*) parameters2)(::func)); \
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} \
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} func = {}; \
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} \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#else
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# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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/* _GL_CXXALIASWARN (func);
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causes a warning to be emitted when ::func is used but not when
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GNULIB_NAMESPACE::func is used. func must be defined without overloaded
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variants. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_CXXALIASWARN(func) \
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_GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
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# define _GL_CXXALIASWARN_1(func,namespace) \
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_GL_CXXALIASWARN_2 (func, namespace)
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/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
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we enable the warning only when not optimizing. */
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# if !__OPTIMIZE__
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# define _GL_CXXALIASWARN_2(func,namespace) \
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_GL_WARN_ON_USE (func, \
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"The symbol ::" #func " refers to the system function. " \
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"Use " #namespace "::" #func " instead.")
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# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
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# define _GL_CXXALIASWARN_2(func,namespace) \
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extern __typeof__ (func) func
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# else
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# define _GL_CXXALIASWARN_2(func,namespace) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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# endif
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#else
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# define _GL_CXXALIASWARN(func) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
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causes a warning to be emitted when the given overloaded variant of ::func
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is used but not when GNULIB_NAMESPACE::func is used. */
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#if defined __cplusplus && defined GNULIB_NAMESPACE
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# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
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_GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
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GNULIB_NAMESPACE)
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# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
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_GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
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/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
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we enable the warning only when not optimizing. */
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# if !__OPTIMIZE__
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# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
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_GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
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"The symbol ::" #func " refers to the system function. " \
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"Use " #namespace "::" #func " instead.")
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# else
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# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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# endif
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#else
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# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
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_GL_EXTERN_C int _gl_cxxalias_dummy
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#endif
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#endif /* _GL_CXXDEFS_H */
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/* The definition of _GL_WARN_ON_USE is copied here. */
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/* A C macro for emitting warnings if a function is used.
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Copyright (C) 2010-2020 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by 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 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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/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
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for FUNCTION which will then trigger a compiler warning containing
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the text of "literal string" anywhere that function is called, if
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supported by the compiler. If the compiler does not support this
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feature, the macro expands to an unused extern declaration.
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_GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the
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attribute used in _GL_WARN_ON_USE. If the compiler does not support
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this feature, it expands to empty.
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These macros are useful for marking a function as a potential
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portability trap, with the intent that "literal string" include
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instructions on the replacement function that should be used
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instead.
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_GL_WARN_ON_USE is for functions with 'extern' linkage.
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_GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline'
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linkage.
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However, one of the reasons that a function is a portability trap is
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if it has the wrong signature. Declaring FUNCTION with a different
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signature in C is a compilation error, so this macro must use the
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same type as any existing declaration so that programs that avoid
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the problematic FUNCTION do not fail to compile merely because they
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included a header that poisoned the function. But this implies that
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_GL_WARN_ON_USE is only safe to use if FUNCTION is known to already
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have a declaration. Use of this macro implies that there must not
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be any other macro hiding the declaration of FUNCTION; but
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undefining FUNCTION first is part of the poisoning process anyway
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(although for symbols that are provided only via a macro, the result
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is a compilation error rather than a warning containing
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"literal string"). Also note that in C++, it is only safe to use if
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FUNCTION has no overloads.
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For an example, it is possible to poison 'getline' by:
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- adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]],
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[getline]) in configure.ac, which potentially defines
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HAVE_RAW_DECL_GETLINE
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- adding this code to a header that wraps the system <stdio.h>:
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#undef getline
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#if HAVE_RAW_DECL_GETLINE
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_GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
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"not universally present; use the gnulib module getline");
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#endif
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It is not possible to directly poison global variables. But it is
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possible to write a wrapper accessor function, and poison that
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(less common usage, like &environ, will cause a compilation error
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rather than issue the nice warning, but the end result of informing
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the developer about their portability problem is still achieved):
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#if HAVE_RAW_DECL_ENVIRON
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static char ***
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rpl_environ (void) { return &environ; }
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_GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
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# undef environ
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# define environ (*rpl_environ ())
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#endif
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or better (avoiding contradictory use of 'static' and 'extern'):
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#if HAVE_RAW_DECL_ENVIRON
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static char ***
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_GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared")
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rpl_environ (void) { return &environ; }
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# undef environ
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# define environ (*rpl_environ ())
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#endif
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*/
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#ifndef _GL_WARN_ON_USE
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# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
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/* A compiler attribute is available in gcc versions 4.3.0 and later. */
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# define _GL_WARN_ON_USE(function, message) \
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extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
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# define _GL_WARN_ON_USE_ATTRIBUTE(message) \
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__attribute__ ((__warning__ (message)))
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# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
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/* Verify the existence of the function. */
|
|
# define _GL_WARN_ON_USE(function, message) \
|
|
extern __typeof__ (function) function
|
|
# define _GL_WARN_ON_USE_ATTRIBUTE(message)
|
|
# else /* Unsupported. */
|
|
# define _GL_WARN_ON_USE(function, message) \
|
|
_GL_WARN_EXTERN_C int _gl_warn_on_use
|
|
# define _GL_WARN_ON_USE_ATTRIBUTE(message)
|
|
# endif
|
|
#endif
|
|
|
|
/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string")
|
|
is like _GL_WARN_ON_USE (function, "string"), except that the function is
|
|
declared with the given prototype, consisting of return type, parameters,
|
|
and attributes.
|
|
This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
|
|
not work in this case. */
|
|
#ifndef _GL_WARN_ON_USE_CXX
|
|
# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
|
|
# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
|
|
extern rettype function parameters_and_attributes \
|
|
__attribute__ ((__warning__ (msg)))
|
|
# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
|
|
/* Verify the existence of the function. */
|
|
# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
|
|
extern rettype function parameters_and_attributes
|
|
# else /* Unsupported. */
|
|
# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
|
|
_GL_WARN_EXTERN_C int _gl_warn_on_use
|
|
# endif
|
|
#endif
|
|
|
|
/* _GL_WARN_EXTERN_C declaration;
|
|
performs the declaration with C linkage. */
|
|
#ifndef _GL_WARN_EXTERN_C
|
|
# if defined __cplusplus
|
|
# define _GL_WARN_EXTERN_C extern "C"
|
|
# else
|
|
# define _GL_WARN_EXTERN_C extern
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/* Declare overridden functions. */
|
|
|
|
#if IN_COREUTILS_GNULIB_TESTS
|
|
# if 1
|
|
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
|
|
# undef ioctl
|
|
# define ioctl rpl_ioctl
|
|
# endif
|
|
_GL_FUNCDECL_RPL (ioctl, int,
|
|
(int fd, int request, ... /* {void *,char *} arg */));
|
|
_GL_CXXALIAS_RPL (ioctl, int,
|
|
(int fd, int request, ... /* {void *,char *} arg */));
|
|
# else
|
|
# if 0 || 1
|
|
_GL_FUNCDECL_SYS (ioctl, int,
|
|
(int fd, int request, ... /* {void *,char *} arg */));
|
|
# endif
|
|
_GL_CXXALIAS_SYS (ioctl, int,
|
|
(int fd, int request, ... /* {void *,char *} arg */));
|
|
# endif
|
|
_GL_CXXALIASWARN (ioctl);
|
|
#elif 0
|
|
# undef ioctl
|
|
# define ioctl ioctl_used_without_requesting_gnulib_module_ioctl
|
|
#elif defined GNULIB_POSIXCHECK
|
|
# undef ioctl
|
|
# if HAVE_RAW_DECL_IOCTL
|
|
_GL_WARN_ON_USE (ioctl, "ioctl does not portably work on sockets - "
|
|
"use gnulib module ioctl for portability");
|
|
# endif
|
|
#endif
|
|
|
|
|
|
#endif /* _GL_SYS_IOCTL_H */
|
|
#endif /* _GL_SYS_IOCTL_H */
|