1*fd82c4c4Schristos /* This file is automatically generated. DO NOT EDIT! */ 2*fd82c4c4Schristos /* Generated from: NetBSD: mknative-gdb,v 1.12 2020/09/17 16:54:31 christos Exp */ 3*fd82c4c4Schristos /* Generated from: NetBSD: mknative.common,v 1.16 2018/04/15 15:13:37 christos Exp */ 4*fd82c4c4Schristos 5*fd82c4c4Schristos /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 6*fd82c4c4Schristos /* A GNU-like <signal.h>. 7*fd82c4c4Schristos 8*fd82c4c4Schristos Copyright (C) 2006-2020 Free Software Foundation, Inc. 9*fd82c4c4Schristos 10*fd82c4c4Schristos This program is free software: you can redistribute it and/or modify 11*fd82c4c4Schristos it under the terms of the GNU General Public License as published by 12*fd82c4c4Schristos the Free Software Foundation; either version 3 of the License, or 13*fd82c4c4Schristos (at your option) any later version. 14*fd82c4c4Schristos 15*fd82c4c4Schristos This program is distributed in the hope that it will be useful, 16*fd82c4c4Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 17*fd82c4c4Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*fd82c4c4Schristos GNU General Public License for more details. 19*fd82c4c4Schristos 20*fd82c4c4Schristos You should have received a copy of the GNU General Public License 21*fd82c4c4Schristos along with this program. If not, see <https://www.gnu.org/licenses/>. */ 22*fd82c4c4Schristos 23*fd82c4c4Schristos #if __GNUC__ >= 3 24*fd82c4c4Schristos #pragma GCC system_header 25*fd82c4c4Schristos #endif 26*fd82c4c4Schristos 27*fd82c4c4Schristos 28*fd82c4c4Schristos #if defined __need_sig_atomic_t || defined __need_sigset_t || defined _GL_ALREADY_INCLUDING_SIGNAL_H || (defined _SIGNAL_H && !defined __SIZEOF_PTHREAD_MUTEX_T) 29*fd82c4c4Schristos /* Special invocation convention: 30*fd82c4c4Schristos - Inside glibc header files. 31*fd82c4c4Schristos - On glibc systems we have a sequence of nested includes 32*fd82c4c4Schristos <signal.h> -> <ucontext.h> -> <signal.h>. 33*fd82c4c4Schristos In this situation, the functions are not yet declared, therefore we cannot 34*fd82c4c4Schristos provide the C++ aliases. 35*fd82c4c4Schristos - On glibc systems with GCC 4.3 we have a sequence of nested includes 36*fd82c4c4Schristos <csignal> -> </usr/include/signal.h> -> <sys/ucontext.h> -> <signal.h>. 37*fd82c4c4Schristos In this situation, some of the functions are not yet declared, therefore 38*fd82c4c4Schristos we cannot provide the C++ aliases. */ 39*fd82c4c4Schristos 40*fd82c4c4Schristos # include_next <signal.h> 41*fd82c4c4Schristos 42*fd82c4c4Schristos #else 43*fd82c4c4Schristos /* Normal invocation convention. */ 44*fd82c4c4Schristos 45*fd82c4c4Schristos #ifndef _GL_SIGNAL_H 46*fd82c4c4Schristos 47*fd82c4c4Schristos #define _GL_ALREADY_INCLUDING_SIGNAL_H 48*fd82c4c4Schristos 49*fd82c4c4Schristos /* Define pid_t, uid_t. 50*fd82c4c4Schristos Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. 51*fd82c4c4Schristos On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes 52*fd82c4c4Schristos us; so include <sys/types.h> now, before the second inclusion guard. */ 53*fd82c4c4Schristos #include <sys/types.h> 54*fd82c4c4Schristos 55*fd82c4c4Schristos /* The include_next requires a split double-inclusion guard. */ 56*fd82c4c4Schristos #include_next <signal.h> 57*fd82c4c4Schristos 58*fd82c4c4Schristos #undef _GL_ALREADY_INCLUDING_SIGNAL_H 59*fd82c4c4Schristos 60*fd82c4c4Schristos #ifndef _GL_SIGNAL_H 61*fd82c4c4Schristos #define _GL_SIGNAL_H 62*fd82c4c4Schristos 63*fd82c4c4Schristos /* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android 64*fd82c4c4Schristos declare pthread_sigmask in <pthread.h>, not in <signal.h>. 65*fd82c4c4Schristos But avoid namespace pollution on glibc systems.*/ 66*fd82c4c4Schristos #if (0 || defined GNULIB_POSIXCHECK) \ 67*fd82c4c4Schristos && ((defined __APPLE__ && defined __MACH__) \ 68*fd82c4c4Schristos || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ \ 69*fd82c4c4Schristos || defined __sun || defined __ANDROID__) \ 70*fd82c4c4Schristos && ! defined __GLIBC__ 71*fd82c4c4Schristos # include <pthread.h> 72*fd82c4c4Schristos #endif 73*fd82c4c4Schristos 74*fd82c4c4Schristos /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ 75*fd82c4c4Schristos /* C++ compatible function declaration macros. 76*fd82c4c4Schristos Copyright (C) 2010-2020 Free Software Foundation, Inc. 77*fd82c4c4Schristos 78*fd82c4c4Schristos This program is free software: you can redistribute it and/or modify it 79*fd82c4c4Schristos under the terms of the GNU General Public License as published 80*fd82c4c4Schristos by the Free Software Foundation; either version 3 of the License, or 81*fd82c4c4Schristos (at your option) any later version. 82*fd82c4c4Schristos 83*fd82c4c4Schristos This program is distributed in the hope that it will be useful, 84*fd82c4c4Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 85*fd82c4c4Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 86*fd82c4c4Schristos General Public License for more details. 87*fd82c4c4Schristos 88*fd82c4c4Schristos You should have received a copy of the GNU General Public License 89*fd82c4c4Schristos along with this program. If not, see <https://www.gnu.org/licenses/>. */ 90*fd82c4c4Schristos 91*fd82c4c4Schristos #ifndef _GL_CXXDEFS_H 92*fd82c4c4Schristos #define _GL_CXXDEFS_H 93*fd82c4c4Schristos 94*fd82c4c4Schristos /* Begin/end the GNULIB_NAMESPACE namespace. */ 95*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 96*fd82c4c4Schristos # define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE { 97*fd82c4c4Schristos # define _GL_END_NAMESPACE } 98*fd82c4c4Schristos #else 99*fd82c4c4Schristos # define _GL_BEGIN_NAMESPACE 100*fd82c4c4Schristos # define _GL_END_NAMESPACE 101*fd82c4c4Schristos #endif 102*fd82c4c4Schristos 103*fd82c4c4Schristos /* The three most frequent use cases of these macros are: 104*fd82c4c4Schristos 105*fd82c4c4Schristos * For providing a substitute for a function that is missing on some 106*fd82c4c4Schristos platforms, but is declared and works fine on the platforms on which 107*fd82c4c4Schristos it exists: 108*fd82c4c4Schristos 109*fd82c4c4Schristos #if @GNULIB_FOO@ 110*fd82c4c4Schristos # if !@HAVE_FOO@ 111*fd82c4c4Schristos _GL_FUNCDECL_SYS (foo, ...); 112*fd82c4c4Schristos # endif 113*fd82c4c4Schristos _GL_CXXALIAS_SYS (foo, ...); 114*fd82c4c4Schristos _GL_CXXALIASWARN (foo); 115*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 116*fd82c4c4Schristos ... 117*fd82c4c4Schristos #endif 118*fd82c4c4Schristos 119*fd82c4c4Schristos * For providing a replacement for a function that exists on all platforms, 120*fd82c4c4Schristos but is broken/insufficient and needs to be replaced on some platforms: 121*fd82c4c4Schristos 122*fd82c4c4Schristos #if @GNULIB_FOO@ 123*fd82c4c4Schristos # if @REPLACE_FOO@ 124*fd82c4c4Schristos # if !(defined __cplusplus && defined GNULIB_NAMESPACE) 125*fd82c4c4Schristos # undef foo 126*fd82c4c4Schristos # define foo rpl_foo 127*fd82c4c4Schristos # endif 128*fd82c4c4Schristos _GL_FUNCDECL_RPL (foo, ...); 129*fd82c4c4Schristos _GL_CXXALIAS_RPL (foo, ...); 130*fd82c4c4Schristos # else 131*fd82c4c4Schristos _GL_CXXALIAS_SYS (foo, ...); 132*fd82c4c4Schristos # endif 133*fd82c4c4Schristos _GL_CXXALIASWARN (foo); 134*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 135*fd82c4c4Schristos ... 136*fd82c4c4Schristos #endif 137*fd82c4c4Schristos 138*fd82c4c4Schristos * For providing a replacement for a function that exists on some platforms 139*fd82c4c4Schristos but is broken/insufficient and needs to be replaced on some of them and 140*fd82c4c4Schristos is additionally either missing or undeclared on some other platforms: 141*fd82c4c4Schristos 142*fd82c4c4Schristos #if @GNULIB_FOO@ 143*fd82c4c4Schristos # if @REPLACE_FOO@ 144*fd82c4c4Schristos # if !(defined __cplusplus && defined GNULIB_NAMESPACE) 145*fd82c4c4Schristos # undef foo 146*fd82c4c4Schristos # define foo rpl_foo 147*fd82c4c4Schristos # endif 148*fd82c4c4Schristos _GL_FUNCDECL_RPL (foo, ...); 149*fd82c4c4Schristos _GL_CXXALIAS_RPL (foo, ...); 150*fd82c4c4Schristos # else 151*fd82c4c4Schristos # if !@HAVE_FOO@ or if !@HAVE_DECL_FOO@ 152*fd82c4c4Schristos _GL_FUNCDECL_SYS (foo, ...); 153*fd82c4c4Schristos # endif 154*fd82c4c4Schristos _GL_CXXALIAS_SYS (foo, ...); 155*fd82c4c4Schristos # endif 156*fd82c4c4Schristos _GL_CXXALIASWARN (foo); 157*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 158*fd82c4c4Schristos ... 159*fd82c4c4Schristos #endif 160*fd82c4c4Schristos */ 161*fd82c4c4Schristos 162*fd82c4c4Schristos /* _GL_EXTERN_C declaration; 163*fd82c4c4Schristos performs the declaration with C linkage. */ 164*fd82c4c4Schristos #if defined __cplusplus 165*fd82c4c4Schristos # define _GL_EXTERN_C extern "C" 166*fd82c4c4Schristos #else 167*fd82c4c4Schristos # define _GL_EXTERN_C extern 168*fd82c4c4Schristos #endif 169*fd82c4c4Schristos 170*fd82c4c4Schristos /* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes); 171*fd82c4c4Schristos declares a replacement function, named rpl_func, with the given prototype, 172*fd82c4c4Schristos consisting of return type, parameters, and attributes. 173*fd82c4c4Schristos Example: 174*fd82c4c4Schristos _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) 175*fd82c4c4Schristos _GL_ARG_NONNULL ((1))); 176*fd82c4c4Schristos */ 177*fd82c4c4Schristos #define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \ 178*fd82c4c4Schristos _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes) 179*fd82c4c4Schristos #define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \ 180*fd82c4c4Schristos _GL_EXTERN_C rettype rpl_func parameters_and_attributes 181*fd82c4c4Schristos 182*fd82c4c4Schristos /* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes); 183*fd82c4c4Schristos declares the system function, named func, with the given prototype, 184*fd82c4c4Schristos consisting of return type, parameters, and attributes. 185*fd82c4c4Schristos Example: 186*fd82c4c4Schristos _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...) 187*fd82c4c4Schristos _GL_ARG_NONNULL ((1))); 188*fd82c4c4Schristos */ 189*fd82c4c4Schristos #define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \ 190*fd82c4c4Schristos _GL_EXTERN_C rettype func parameters_and_attributes 191*fd82c4c4Schristos 192*fd82c4c4Schristos /* _GL_CXXALIAS_RPL (func, rettype, parameters); 193*fd82c4c4Schristos declares a C++ alias called GNULIB_NAMESPACE::func 194*fd82c4c4Schristos that redirects to rpl_func, if GNULIB_NAMESPACE is defined. 195*fd82c4c4Schristos Example: 196*fd82c4c4Schristos _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); 197*fd82c4c4Schristos 198*fd82c4c4Schristos Wrapping rpl_func in an object with an inline conversion operator 199*fd82c4c4Schristos avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is 200*fd82c4c4Schristos actually used in the program. */ 201*fd82c4c4Schristos #define _GL_CXXALIAS_RPL(func,rettype,parameters) \ 202*fd82c4c4Schristos _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters) 203*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 204*fd82c4c4Schristos # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \ 205*fd82c4c4Schristos namespace GNULIB_NAMESPACE \ 206*fd82c4c4Schristos { \ 207*fd82c4c4Schristos static const struct _gl_ ## func ## _wrapper \ 208*fd82c4c4Schristos { \ 209*fd82c4c4Schristos typedef rettype (*type) parameters; \ 210*fd82c4c4Schristos \ 211*fd82c4c4Schristos inline operator type () const \ 212*fd82c4c4Schristos { \ 213*fd82c4c4Schristos return ::rpl_func; \ 214*fd82c4c4Schristos } \ 215*fd82c4c4Schristos } func = {}; \ 216*fd82c4c4Schristos } \ 217*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 218*fd82c4c4Schristos #else 219*fd82c4c4Schristos # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \ 220*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 221*fd82c4c4Schristos #endif 222*fd82c4c4Schristos 223*fd82c4c4Schristos /* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters); 224*fd82c4c4Schristos is like _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters); 225*fd82c4c4Schristos except that the C function rpl_func may have a slightly different 226*fd82c4c4Schristos declaration. A cast is used to silence the "invalid conversion" error 227*fd82c4c4Schristos that would otherwise occur. */ 228*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 229*fd82c4c4Schristos # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \ 230*fd82c4c4Schristos namespace GNULIB_NAMESPACE \ 231*fd82c4c4Schristos { \ 232*fd82c4c4Schristos static const struct _gl_ ## func ## _wrapper \ 233*fd82c4c4Schristos { \ 234*fd82c4c4Schristos typedef rettype (*type) parameters; \ 235*fd82c4c4Schristos \ 236*fd82c4c4Schristos inline operator type () const \ 237*fd82c4c4Schristos { \ 238*fd82c4c4Schristos return reinterpret_cast<type>(::rpl_func); \ 239*fd82c4c4Schristos } \ 240*fd82c4c4Schristos } func = {}; \ 241*fd82c4c4Schristos } \ 242*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 243*fd82c4c4Schristos #else 244*fd82c4c4Schristos # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \ 245*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 246*fd82c4c4Schristos #endif 247*fd82c4c4Schristos 248*fd82c4c4Schristos /* _GL_CXXALIAS_SYS (func, rettype, parameters); 249*fd82c4c4Schristos declares a C++ alias called GNULIB_NAMESPACE::func 250*fd82c4c4Schristos that redirects to the system provided function func, if GNULIB_NAMESPACE 251*fd82c4c4Schristos is defined. 252*fd82c4c4Schristos Example: 253*fd82c4c4Schristos _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); 254*fd82c4c4Schristos 255*fd82c4c4Schristos Wrapping func in an object with an inline conversion operator 256*fd82c4c4Schristos avoids a reference to func unless GNULIB_NAMESPACE::func is 257*fd82c4c4Schristos actually used in the program. */ 258*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 259*fd82c4c4Schristos # define _GL_CXXALIAS_SYS(func,rettype,parameters) \ 260*fd82c4c4Schristos namespace GNULIB_NAMESPACE \ 261*fd82c4c4Schristos { \ 262*fd82c4c4Schristos static const struct _gl_ ## func ## _wrapper \ 263*fd82c4c4Schristos { \ 264*fd82c4c4Schristos typedef rettype (*type) parameters; \ 265*fd82c4c4Schristos \ 266*fd82c4c4Schristos inline operator type () const \ 267*fd82c4c4Schristos { \ 268*fd82c4c4Schristos return ::func; \ 269*fd82c4c4Schristos } \ 270*fd82c4c4Schristos } func = {}; \ 271*fd82c4c4Schristos } \ 272*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 273*fd82c4c4Schristos #else 274*fd82c4c4Schristos # define _GL_CXXALIAS_SYS(func,rettype,parameters) \ 275*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 276*fd82c4c4Schristos #endif 277*fd82c4c4Schristos 278*fd82c4c4Schristos /* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters); 279*fd82c4c4Schristos is like _GL_CXXALIAS_SYS (func, rettype, parameters); 280*fd82c4c4Schristos except that the C function func may have a slightly different declaration. 281*fd82c4c4Schristos A cast is used to silence the "invalid conversion" error that would 282*fd82c4c4Schristos otherwise occur. */ 283*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 284*fd82c4c4Schristos # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \ 285*fd82c4c4Schristos namespace GNULIB_NAMESPACE \ 286*fd82c4c4Schristos { \ 287*fd82c4c4Schristos static const struct _gl_ ## func ## _wrapper \ 288*fd82c4c4Schristos { \ 289*fd82c4c4Schristos typedef rettype (*type) parameters; \ 290*fd82c4c4Schristos \ 291*fd82c4c4Schristos inline operator type () const \ 292*fd82c4c4Schristos { \ 293*fd82c4c4Schristos return reinterpret_cast<type>(::func); \ 294*fd82c4c4Schristos } \ 295*fd82c4c4Schristos } func = {}; \ 296*fd82c4c4Schristos } \ 297*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 298*fd82c4c4Schristos #else 299*fd82c4c4Schristos # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \ 300*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 301*fd82c4c4Schristos #endif 302*fd82c4c4Schristos 303*fd82c4c4Schristos /* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2); 304*fd82c4c4Schristos is like _GL_CXXALIAS_SYS (func, rettype, parameters); 305*fd82c4c4Schristos except that the C function is picked among a set of overloaded functions, 306*fd82c4c4Schristos namely the one with rettype2 and parameters2. Two consecutive casts 307*fd82c4c4Schristos are used to silence the "cannot find a match" and "invalid conversion" 308*fd82c4c4Schristos errors that would otherwise occur. */ 309*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 310*fd82c4c4Schristos /* The outer cast must be a reinterpret_cast. 311*fd82c4c4Schristos The inner cast: When the function is defined as a set of overloaded 312*fd82c4c4Schristos functions, it works as a static_cast<>, choosing the designated variant. 313*fd82c4c4Schristos When the function is defined as a single variant, it works as a 314*fd82c4c4Schristos reinterpret_cast<>. The parenthesized cast syntax works both ways. */ 315*fd82c4c4Schristos # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \ 316*fd82c4c4Schristos namespace GNULIB_NAMESPACE \ 317*fd82c4c4Schristos { \ 318*fd82c4c4Schristos static const struct _gl_ ## func ## _wrapper \ 319*fd82c4c4Schristos { \ 320*fd82c4c4Schristos typedef rettype (*type) parameters; \ 321*fd82c4c4Schristos \ 322*fd82c4c4Schristos inline operator type () const \ 323*fd82c4c4Schristos { \ 324*fd82c4c4Schristos return reinterpret_cast<type>((rettype2 (*) parameters2)(::func)); \ 325*fd82c4c4Schristos } \ 326*fd82c4c4Schristos } func = {}; \ 327*fd82c4c4Schristos } \ 328*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 329*fd82c4c4Schristos #else 330*fd82c4c4Schristos # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \ 331*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 332*fd82c4c4Schristos #endif 333*fd82c4c4Schristos 334*fd82c4c4Schristos /* _GL_CXXALIASWARN (func); 335*fd82c4c4Schristos causes a warning to be emitted when ::func is used but not when 336*fd82c4c4Schristos GNULIB_NAMESPACE::func is used. func must be defined without overloaded 337*fd82c4c4Schristos variants. */ 338*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 339*fd82c4c4Schristos # define _GL_CXXALIASWARN(func) \ 340*fd82c4c4Schristos _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE) 341*fd82c4c4Schristos # define _GL_CXXALIASWARN_1(func,namespace) \ 342*fd82c4c4Schristos _GL_CXXALIASWARN_2 (func, namespace) 343*fd82c4c4Schristos /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>, 344*fd82c4c4Schristos we enable the warning only when not optimizing. */ 345*fd82c4c4Schristos # if !__OPTIMIZE__ 346*fd82c4c4Schristos # define _GL_CXXALIASWARN_2(func,namespace) \ 347*fd82c4c4Schristos _GL_WARN_ON_USE (func, \ 348*fd82c4c4Schristos "The symbol ::" #func " refers to the system function. " \ 349*fd82c4c4Schristos "Use " #namespace "::" #func " instead.") 350*fd82c4c4Schristos # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING 351*fd82c4c4Schristos # define _GL_CXXALIASWARN_2(func,namespace) \ 352*fd82c4c4Schristos extern __typeof__ (func) func 353*fd82c4c4Schristos # else 354*fd82c4c4Schristos # define _GL_CXXALIASWARN_2(func,namespace) \ 355*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 356*fd82c4c4Schristos # endif 357*fd82c4c4Schristos #else 358*fd82c4c4Schristos # define _GL_CXXALIASWARN(func) \ 359*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 360*fd82c4c4Schristos #endif 361*fd82c4c4Schristos 362*fd82c4c4Schristos /* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes); 363*fd82c4c4Schristos causes a warning to be emitted when the given overloaded variant of ::func 364*fd82c4c4Schristos is used but not when GNULIB_NAMESPACE::func is used. */ 365*fd82c4c4Schristos #if defined __cplusplus && defined GNULIB_NAMESPACE 366*fd82c4c4Schristos # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \ 367*fd82c4c4Schristos _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \ 368*fd82c4c4Schristos GNULIB_NAMESPACE) 369*fd82c4c4Schristos # define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \ 370*fd82c4c4Schristos _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace) 371*fd82c4c4Schristos /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>, 372*fd82c4c4Schristos we enable the warning only when not optimizing. */ 373*fd82c4c4Schristos # if !__OPTIMIZE__ 374*fd82c4c4Schristos # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ 375*fd82c4c4Schristos _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \ 376*fd82c4c4Schristos "The symbol ::" #func " refers to the system function. " \ 377*fd82c4c4Schristos "Use " #namespace "::" #func " instead.") 378*fd82c4c4Schristos # else 379*fd82c4c4Schristos # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ 380*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 381*fd82c4c4Schristos # endif 382*fd82c4c4Schristos #else 383*fd82c4c4Schristos # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \ 384*fd82c4c4Schristos _GL_EXTERN_C int _gl_cxxalias_dummy 385*fd82c4c4Schristos #endif 386*fd82c4c4Schristos 387*fd82c4c4Schristos #endif /* _GL_CXXDEFS_H */ 388*fd82c4c4Schristos 389*fd82c4c4Schristos /* The definition of _GL_ARG_NONNULL is copied here. */ 390*fd82c4c4Schristos /* A C macro for declaring that specific arguments must not be NULL. 391*fd82c4c4Schristos Copyright (C) 2009-2020 Free Software Foundation, Inc. 392*fd82c4c4Schristos 393*fd82c4c4Schristos This program is free software: you can redistribute it and/or modify it 394*fd82c4c4Schristos under the terms of the GNU General Public License as published 395*fd82c4c4Schristos by the Free Software Foundation; either version 3 of the License, or 396*fd82c4c4Schristos (at your option) any later version. 397*fd82c4c4Schristos 398*fd82c4c4Schristos This program is distributed in the hope that it will be useful, 399*fd82c4c4Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 400*fd82c4c4Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 401*fd82c4c4Schristos General Public License for more details. 402*fd82c4c4Schristos 403*fd82c4c4Schristos You should have received a copy of the GNU General Public License 404*fd82c4c4Schristos along with this program. If not, see <https://www.gnu.org/licenses/>. */ 405*fd82c4c4Schristos 406*fd82c4c4Schristos /* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools 407*fd82c4c4Schristos that the values passed as arguments n, ..., m must be non-NULL pointers. 408*fd82c4c4Schristos n = 1 stands for the first argument, n = 2 for the second argument etc. */ 409*fd82c4c4Schristos #ifndef _GL_ARG_NONNULL 410*fd82c4c4Schristos # if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3 411*fd82c4c4Schristos # define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params)) 412*fd82c4c4Schristos # else 413*fd82c4c4Schristos # define _GL_ARG_NONNULL(params) 414*fd82c4c4Schristos # endif 415*fd82c4c4Schristos #endif 416*fd82c4c4Schristos 417*fd82c4c4Schristos /* The definition of _GL_WARN_ON_USE is copied here. */ 418*fd82c4c4Schristos /* A C macro for emitting warnings if a function is used. 419*fd82c4c4Schristos Copyright (C) 2010-2020 Free Software Foundation, Inc. 420*fd82c4c4Schristos 421*fd82c4c4Schristos This program is free software: you can redistribute it and/or modify it 422*fd82c4c4Schristos under the terms of the GNU General Public License as published 423*fd82c4c4Schristos by the Free Software Foundation; either version 3 of the License, or 424*fd82c4c4Schristos (at your option) any later version. 425*fd82c4c4Schristos 426*fd82c4c4Schristos This program is distributed in the hope that it will be useful, 427*fd82c4c4Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 428*fd82c4c4Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 429*fd82c4c4Schristos General Public License for more details. 430*fd82c4c4Schristos 431*fd82c4c4Schristos You should have received a copy of the GNU General Public License 432*fd82c4c4Schristos along with this program. If not, see <https://www.gnu.org/licenses/>. */ 433*fd82c4c4Schristos 434*fd82c4c4Schristos /* _GL_WARN_ON_USE (function, "literal string") issues a declaration 435*fd82c4c4Schristos for FUNCTION which will then trigger a compiler warning containing 436*fd82c4c4Schristos the text of "literal string" anywhere that function is called, if 437*fd82c4c4Schristos supported by the compiler. If the compiler does not support this 438*fd82c4c4Schristos feature, the macro expands to an unused extern declaration. 439*fd82c4c4Schristos 440*fd82c4c4Schristos _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the 441*fd82c4c4Schristos attribute used in _GL_WARN_ON_USE. If the compiler does not support 442*fd82c4c4Schristos this feature, it expands to empty. 443*fd82c4c4Schristos 444*fd82c4c4Schristos These macros are useful for marking a function as a potential 445*fd82c4c4Schristos portability trap, with the intent that "literal string" include 446*fd82c4c4Schristos instructions on the replacement function that should be used 447*fd82c4c4Schristos instead. 448*fd82c4c4Schristos _GL_WARN_ON_USE is for functions with 'extern' linkage. 449*fd82c4c4Schristos _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline' 450*fd82c4c4Schristos linkage. 451*fd82c4c4Schristos 452*fd82c4c4Schristos However, one of the reasons that a function is a portability trap is 453*fd82c4c4Schristos if it has the wrong signature. Declaring FUNCTION with a different 454*fd82c4c4Schristos signature in C is a compilation error, so this macro must use the 455*fd82c4c4Schristos same type as any existing declaration so that programs that avoid 456*fd82c4c4Schristos the problematic FUNCTION do not fail to compile merely because they 457*fd82c4c4Schristos included a header that poisoned the function. But this implies that 458*fd82c4c4Schristos _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already 459*fd82c4c4Schristos have a declaration. Use of this macro implies that there must not 460*fd82c4c4Schristos be any other macro hiding the declaration of FUNCTION; but 461*fd82c4c4Schristos undefining FUNCTION first is part of the poisoning process anyway 462*fd82c4c4Schristos (although for symbols that are provided only via a macro, the result 463*fd82c4c4Schristos is a compilation error rather than a warning containing 464*fd82c4c4Schristos "literal string"). Also note that in C++, it is only safe to use if 465*fd82c4c4Schristos FUNCTION has no overloads. 466*fd82c4c4Schristos 467*fd82c4c4Schristos For an example, it is possible to poison 'getline' by: 468*fd82c4c4Schristos - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]], 469*fd82c4c4Schristos [getline]) in configure.ac, which potentially defines 470*fd82c4c4Schristos HAVE_RAW_DECL_GETLINE 471*fd82c4c4Schristos - adding this code to a header that wraps the system <stdio.h>: 472*fd82c4c4Schristos #undef getline 473*fd82c4c4Schristos #if HAVE_RAW_DECL_GETLINE 474*fd82c4c4Schristos _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but" 475*fd82c4c4Schristos "not universally present; use the gnulib module getline"); 476*fd82c4c4Schristos #endif 477*fd82c4c4Schristos 478*fd82c4c4Schristos It is not possible to directly poison global variables. But it is 479*fd82c4c4Schristos possible to write a wrapper accessor function, and poison that 480*fd82c4c4Schristos (less common usage, like &environ, will cause a compilation error 481*fd82c4c4Schristos rather than issue the nice warning, but the end result of informing 482*fd82c4c4Schristos the developer about their portability problem is still achieved): 483*fd82c4c4Schristos #if HAVE_RAW_DECL_ENVIRON 484*fd82c4c4Schristos static char *** 485*fd82c4c4Schristos rpl_environ (void) { return &environ; } 486*fd82c4c4Schristos _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared"); 487*fd82c4c4Schristos # undef environ 488*fd82c4c4Schristos # define environ (*rpl_environ ()) 489*fd82c4c4Schristos #endif 490*fd82c4c4Schristos or better (avoiding contradictory use of 'static' and 'extern'): 491*fd82c4c4Schristos #if HAVE_RAW_DECL_ENVIRON 492*fd82c4c4Schristos static char *** 493*fd82c4c4Schristos _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared") 494*fd82c4c4Schristos rpl_environ (void) { return &environ; } 495*fd82c4c4Schristos # undef environ 496*fd82c4c4Schristos # define environ (*rpl_environ ()) 497*fd82c4c4Schristos #endif 498*fd82c4c4Schristos */ 499*fd82c4c4Schristos #ifndef _GL_WARN_ON_USE 500*fd82c4c4Schristos 501*fd82c4c4Schristos # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) 502*fd82c4c4Schristos /* A compiler attribute is available in gcc versions 4.3.0 and later. */ 503*fd82c4c4Schristos # define _GL_WARN_ON_USE(function, message) \ 504*fd82c4c4Schristos extern __typeof__ (function) function __attribute__ ((__warning__ (message))) 505*fd82c4c4Schristos # define _GL_WARN_ON_USE_ATTRIBUTE(message) \ 506*fd82c4c4Schristos __attribute__ ((__warning__ (message))) 507*fd82c4c4Schristos # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING 508*fd82c4c4Schristos /* Verify the existence of the function. */ 509*fd82c4c4Schristos # define _GL_WARN_ON_USE(function, message) \ 510*fd82c4c4Schristos extern __typeof__ (function) function 511*fd82c4c4Schristos # define _GL_WARN_ON_USE_ATTRIBUTE(message) 512*fd82c4c4Schristos # else /* Unsupported. */ 513*fd82c4c4Schristos # define _GL_WARN_ON_USE(function, message) \ 514*fd82c4c4Schristos _GL_WARN_EXTERN_C int _gl_warn_on_use 515*fd82c4c4Schristos # define _GL_WARN_ON_USE_ATTRIBUTE(message) 516*fd82c4c4Schristos # endif 517*fd82c4c4Schristos #endif 518*fd82c4c4Schristos 519*fd82c4c4Schristos /* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string") 520*fd82c4c4Schristos is like _GL_WARN_ON_USE (function, "string"), except that in C++ mode the 521*fd82c4c4Schristos function is declared with the given prototype, consisting of return type, 522*fd82c4c4Schristos parameters, and attributes. 523*fd82c4c4Schristos This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does 524*fd82c4c4Schristos not work in this case. */ 525*fd82c4c4Schristos #ifndef _GL_WARN_ON_USE_CXX 526*fd82c4c4Schristos # if !defined __cplusplus 527*fd82c4c4Schristos # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ 528*fd82c4c4Schristos _GL_WARN_ON_USE (function, msg) 529*fd82c4c4Schristos # else 530*fd82c4c4Schristos # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) 531*fd82c4c4Schristos # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ 532*fd82c4c4Schristos extern rettype function parameters_and_attributes \ 533*fd82c4c4Schristos __attribute__ ((__warning__ (msg))) 534*fd82c4c4Schristos # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING 535*fd82c4c4Schristos /* Verify the existence of the function. */ 536*fd82c4c4Schristos # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ 537*fd82c4c4Schristos extern rettype function parameters_and_attributes 538*fd82c4c4Schristos # else /* Unsupported. */ 539*fd82c4c4Schristos # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ 540*fd82c4c4Schristos _GL_WARN_EXTERN_C int _gl_warn_on_use 541*fd82c4c4Schristos # endif 542*fd82c4c4Schristos # endif 543*fd82c4c4Schristos #endif 544*fd82c4c4Schristos 545*fd82c4c4Schristos /* _GL_WARN_EXTERN_C declaration; 546*fd82c4c4Schristos performs the declaration with C linkage. */ 547*fd82c4c4Schristos #ifndef _GL_WARN_EXTERN_C 548*fd82c4c4Schristos # if defined __cplusplus 549*fd82c4c4Schristos # define _GL_WARN_EXTERN_C extern "C" 550*fd82c4c4Schristos # else 551*fd82c4c4Schristos # define _GL_WARN_EXTERN_C extern 552*fd82c4c4Schristos # endif 553*fd82c4c4Schristos #endif 554*fd82c4c4Schristos 555*fd82c4c4Schristos /* On AIX, sig_atomic_t already includes volatile. C99 requires that 556*fd82c4c4Schristos 'volatile sig_atomic_t' ignore the extra modifier, but C89 did not. 557*fd82c4c4Schristos Hence, redefine this to a non-volatile type as needed. */ 558*fd82c4c4Schristos #if ! 1 559*fd82c4c4Schristos # if !GNULIB_defined_sig_atomic_t 560*fd82c4c4Schristos typedef int rpl_sig_atomic_t; 561*fd82c4c4Schristos # undef sig_atomic_t 562*fd82c4c4Schristos # define sig_atomic_t rpl_sig_atomic_t 563*fd82c4c4Schristos # define GNULIB_defined_sig_atomic_t 1 564*fd82c4c4Schristos # endif 565*fd82c4c4Schristos #endif 566*fd82c4c4Schristos 567*fd82c4c4Schristos /* A set or mask of signals. */ 568*fd82c4c4Schristos #if !1 569*fd82c4c4Schristos # if !GNULIB_defined_sigset_t 570*fd82c4c4Schristos typedef unsigned int sigset_t; 571*fd82c4c4Schristos # define GNULIB_defined_sigset_t 1 572*fd82c4c4Schristos # endif 573*fd82c4c4Schristos #endif 574*fd82c4c4Schristos 575*fd82c4c4Schristos /* Define sighandler_t, the type of signal handlers. A GNU extension. */ 576*fd82c4c4Schristos #if !0 577*fd82c4c4Schristos # ifdef __cplusplus 578*fd82c4c4Schristos extern "C" { 579*fd82c4c4Schristos # endif 580*fd82c4c4Schristos # if !GNULIB_defined_sighandler_t 581*fd82c4c4Schristos typedef void (*sighandler_t) (int); 582*fd82c4c4Schristos # define GNULIB_defined_sighandler_t 1 583*fd82c4c4Schristos # endif 584*fd82c4c4Schristos # ifdef __cplusplus 585*fd82c4c4Schristos } 586*fd82c4c4Schristos # endif 587*fd82c4c4Schristos #endif 588*fd82c4c4Schristos 589*fd82c4c4Schristos 590*fd82c4c4Schristos #if 0 591*fd82c4c4Schristos # ifndef SIGPIPE 592*fd82c4c4Schristos /* Define SIGPIPE to a value that does not overlap with other signals. */ 593*fd82c4c4Schristos # define SIGPIPE 13 594*fd82c4c4Schristos # define GNULIB_defined_SIGPIPE 1 595*fd82c4c4Schristos /* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask', 596*fd82c4c4Schristos 'write', 'stdio'. */ 597*fd82c4c4Schristos # endif 598*fd82c4c4Schristos #endif 599*fd82c4c4Schristos 600*fd82c4c4Schristos 601*fd82c4c4Schristos /* Maximum signal number + 1. */ 602*fd82c4c4Schristos #ifndef NSIG 603*fd82c4c4Schristos # if defined __TANDEM 604*fd82c4c4Schristos # define NSIG 32 605*fd82c4c4Schristos # endif 606*fd82c4c4Schristos #endif 607*fd82c4c4Schristos 608*fd82c4c4Schristos 609*fd82c4c4Schristos #if 0 610*fd82c4c4Schristos # if 0 611*fd82c4c4Schristos # if !(defined __cplusplus && defined GNULIB_NAMESPACE) 612*fd82c4c4Schristos # undef pthread_sigmask 613*fd82c4c4Schristos # define pthread_sigmask rpl_pthread_sigmask 614*fd82c4c4Schristos # endif 615*fd82c4c4Schristos _GL_FUNCDECL_RPL (pthread_sigmask, int, 616*fd82c4c4Schristos (int how, 617*fd82c4c4Schristos const sigset_t *restrict new_mask, 618*fd82c4c4Schristos sigset_t *restrict old_mask)); 619*fd82c4c4Schristos _GL_CXXALIAS_RPL (pthread_sigmask, int, 620*fd82c4c4Schristos (int how, 621*fd82c4c4Schristos const sigset_t *restrict new_mask, 622*fd82c4c4Schristos sigset_t *restrict old_mask)); 623*fd82c4c4Schristos # else 624*fd82c4c4Schristos # if !(1 || defined pthread_sigmask) 625*fd82c4c4Schristos _GL_FUNCDECL_SYS (pthread_sigmask, int, 626*fd82c4c4Schristos (int how, 627*fd82c4c4Schristos const sigset_t *restrict new_mask, 628*fd82c4c4Schristos sigset_t *restrict old_mask)); 629*fd82c4c4Schristos # endif 630*fd82c4c4Schristos _GL_CXXALIAS_SYS (pthread_sigmask, int, 631*fd82c4c4Schristos (int how, 632*fd82c4c4Schristos const sigset_t *restrict new_mask, 633*fd82c4c4Schristos sigset_t *restrict old_mask)); 634*fd82c4c4Schristos # endif 635*fd82c4c4Schristos # if __GLIBC__ >= 2 636*fd82c4c4Schristos _GL_CXXALIASWARN (pthread_sigmask); 637*fd82c4c4Schristos # endif 638*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 639*fd82c4c4Schristos # undef pthread_sigmask 640*fd82c4c4Schristos # if HAVE_RAW_DECL_PTHREAD_SIGMASK 641*fd82c4c4Schristos _GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - " 642*fd82c4c4Schristos "use gnulib module pthread_sigmask for portability"); 643*fd82c4c4Schristos # endif 644*fd82c4c4Schristos #endif 645*fd82c4c4Schristos 646*fd82c4c4Schristos 647*fd82c4c4Schristos #if 0 648*fd82c4c4Schristos # if 0 649*fd82c4c4Schristos # if !(defined __cplusplus && defined GNULIB_NAMESPACE) 650*fd82c4c4Schristos # undef raise 651*fd82c4c4Schristos # define raise rpl_raise 652*fd82c4c4Schristos # endif 653*fd82c4c4Schristos _GL_FUNCDECL_RPL (raise, int, (int sig)); 654*fd82c4c4Schristos _GL_CXXALIAS_RPL (raise, int, (int sig)); 655*fd82c4c4Schristos # else 656*fd82c4c4Schristos # if !1 657*fd82c4c4Schristos _GL_FUNCDECL_SYS (raise, int, (int sig)); 658*fd82c4c4Schristos # endif 659*fd82c4c4Schristos _GL_CXXALIAS_SYS (raise, int, (int sig)); 660*fd82c4c4Schristos # endif 661*fd82c4c4Schristos # if __GLIBC__ >= 2 662*fd82c4c4Schristos _GL_CXXALIASWARN (raise); 663*fd82c4c4Schristos # endif 664*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 665*fd82c4c4Schristos # undef raise 666*fd82c4c4Schristos /* Assume raise is always declared. */ 667*fd82c4c4Schristos _GL_WARN_ON_USE (raise, "raise can crash on native Windows - " 668*fd82c4c4Schristos "use gnulib module raise for portability"); 669*fd82c4c4Schristos #endif 670*fd82c4c4Schristos 671*fd82c4c4Schristos 672*fd82c4c4Schristos #if 0 673*fd82c4c4Schristos # if !1 674*fd82c4c4Schristos 675*fd82c4c4Schristos # ifndef GNULIB_defined_signal_blocking 676*fd82c4c4Schristos # define GNULIB_defined_signal_blocking 1 677*fd82c4c4Schristos # endif 678*fd82c4c4Schristos 679*fd82c4c4Schristos /* Maximum signal number + 1. */ 680*fd82c4c4Schristos # ifndef NSIG 681*fd82c4c4Schristos # define NSIG 32 682*fd82c4c4Schristos # endif 683*fd82c4c4Schristos 684*fd82c4c4Schristos /* This code supports only 32 signals. */ 685*fd82c4c4Schristos # if !GNULIB_defined_verify_NSIG_constraint 686*fd82c4c4Schristos typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1]; 687*fd82c4c4Schristos # define GNULIB_defined_verify_NSIG_constraint 1 688*fd82c4c4Schristos # endif 689*fd82c4c4Schristos 690*fd82c4c4Schristos # endif 691*fd82c4c4Schristos 692*fd82c4c4Schristos /* When also using extern inline, suppress the use of static inline in 693*fd82c4c4Schristos standard headers of problematic Apple configurations, as Libc at 694*fd82c4c4Schristos least through Libc-825.26 (2013-04-09) mishandles it; see, e.g., 695*fd82c4c4Schristos <https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html>. 696*fd82c4c4Schristos Perhaps Apple will fix this some day. */ 697*fd82c4c4Schristos #if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \ 698*fd82c4c4Schristos && (defined __i386__ || defined __x86_64__)) 699*fd82c4c4Schristos # undef sigaddset 700*fd82c4c4Schristos # undef sigdelset 701*fd82c4c4Schristos # undef sigemptyset 702*fd82c4c4Schristos # undef sigfillset 703*fd82c4c4Schristos # undef sigismember 704*fd82c4c4Schristos #endif 705*fd82c4c4Schristos 706*fd82c4c4Schristos /* Test whether a given signal is contained in a signal set. */ 707*fd82c4c4Schristos # if 1 708*fd82c4c4Schristos /* This function is defined as a macro on Mac OS X. */ 709*fd82c4c4Schristos # if defined __cplusplus && defined GNULIB_NAMESPACE 710*fd82c4c4Schristos # undef sigismember 711*fd82c4c4Schristos # endif 712*fd82c4c4Schristos # else 713*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig) 714*fd82c4c4Schristos _GL_ARG_NONNULL ((1))); 715*fd82c4c4Schristos # endif 716*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig)); 717*fd82c4c4Schristos _GL_CXXALIASWARN (sigismember); 718*fd82c4c4Schristos 719*fd82c4c4Schristos /* Initialize a signal set to the empty set. */ 720*fd82c4c4Schristos # if 1 721*fd82c4c4Schristos /* This function is defined as a macro on Mac OS X. */ 722*fd82c4c4Schristos # if defined __cplusplus && defined GNULIB_NAMESPACE 723*fd82c4c4Schristos # undef sigemptyset 724*fd82c4c4Schristos # endif 725*fd82c4c4Schristos # else 726*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1))); 727*fd82c4c4Schristos # endif 728*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set)); 729*fd82c4c4Schristos _GL_CXXALIASWARN (sigemptyset); 730*fd82c4c4Schristos 731*fd82c4c4Schristos /* Add a signal to a signal set. */ 732*fd82c4c4Schristos # if 1 733*fd82c4c4Schristos /* This function is defined as a macro on Mac OS X. */ 734*fd82c4c4Schristos # if defined __cplusplus && defined GNULIB_NAMESPACE 735*fd82c4c4Schristos # undef sigaddset 736*fd82c4c4Schristos # endif 737*fd82c4c4Schristos # else 738*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig) 739*fd82c4c4Schristos _GL_ARG_NONNULL ((1))); 740*fd82c4c4Schristos # endif 741*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig)); 742*fd82c4c4Schristos _GL_CXXALIASWARN (sigaddset); 743*fd82c4c4Schristos 744*fd82c4c4Schristos /* Remove a signal from a signal set. */ 745*fd82c4c4Schristos # if 1 746*fd82c4c4Schristos /* This function is defined as a macro on Mac OS X. */ 747*fd82c4c4Schristos # if defined __cplusplus && defined GNULIB_NAMESPACE 748*fd82c4c4Schristos # undef sigdelset 749*fd82c4c4Schristos # endif 750*fd82c4c4Schristos # else 751*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig) 752*fd82c4c4Schristos _GL_ARG_NONNULL ((1))); 753*fd82c4c4Schristos # endif 754*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig)); 755*fd82c4c4Schristos _GL_CXXALIASWARN (sigdelset); 756*fd82c4c4Schristos 757*fd82c4c4Schristos /* Fill a signal set with all possible signals. */ 758*fd82c4c4Schristos # if 1 759*fd82c4c4Schristos /* This function is defined as a macro on Mac OS X. */ 760*fd82c4c4Schristos # if defined __cplusplus && defined GNULIB_NAMESPACE 761*fd82c4c4Schristos # undef sigfillset 762*fd82c4c4Schristos # endif 763*fd82c4c4Schristos # else 764*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1))); 765*fd82c4c4Schristos # endif 766*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set)); 767*fd82c4c4Schristos _GL_CXXALIASWARN (sigfillset); 768*fd82c4c4Schristos 769*fd82c4c4Schristos /* Return the set of those blocked signals that are pending. */ 770*fd82c4c4Schristos # if !1 771*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1))); 772*fd82c4c4Schristos # endif 773*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set)); 774*fd82c4c4Schristos _GL_CXXALIASWARN (sigpending); 775*fd82c4c4Schristos 776*fd82c4c4Schristos /* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET. 777*fd82c4c4Schristos Then, if SET is not NULL, affect the current set of blocked signals by 778*fd82c4c4Schristos combining it with *SET as indicated in OPERATION. 779*fd82c4c4Schristos In this implementation, you are not allowed to change a signal handler 780*fd82c4c4Schristos while the signal is blocked. */ 781*fd82c4c4Schristos # if !1 782*fd82c4c4Schristos # define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */ 783*fd82c4c4Schristos # define SIG_SETMASK 1 /* blocked_set = *set; */ 784*fd82c4c4Schristos # define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */ 785*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigprocmask, int, 786*fd82c4c4Schristos (int operation, 787*fd82c4c4Schristos const sigset_t *restrict set, 788*fd82c4c4Schristos sigset_t *restrict old_set)); 789*fd82c4c4Schristos # endif 790*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigprocmask, int, 791*fd82c4c4Schristos (int operation, 792*fd82c4c4Schristos const sigset_t *restrict set, 793*fd82c4c4Schristos sigset_t *restrict old_set)); 794*fd82c4c4Schristos _GL_CXXALIASWARN (sigprocmask); 795*fd82c4c4Schristos 796*fd82c4c4Schristos /* Install the handler FUNC for signal SIG, and return the previous 797*fd82c4c4Schristos handler. */ 798*fd82c4c4Schristos # ifdef __cplusplus 799*fd82c4c4Schristos extern "C" { 800*fd82c4c4Schristos # endif 801*fd82c4c4Schristos # if !GNULIB_defined_function_taking_int_returning_void_t 802*fd82c4c4Schristos typedef void (*_gl_function_taking_int_returning_void_t) (int); 803*fd82c4c4Schristos # define GNULIB_defined_function_taking_int_returning_void_t 1 804*fd82c4c4Schristos # endif 805*fd82c4c4Schristos # ifdef __cplusplus 806*fd82c4c4Schristos } 807*fd82c4c4Schristos # endif 808*fd82c4c4Schristos # if !1 809*fd82c4c4Schristos # if !(defined __cplusplus && defined GNULIB_NAMESPACE) 810*fd82c4c4Schristos # define signal rpl_signal 811*fd82c4c4Schristos # endif 812*fd82c4c4Schristos _GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t, 813*fd82c4c4Schristos (int sig, _gl_function_taking_int_returning_void_t func)); 814*fd82c4c4Schristos _GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t, 815*fd82c4c4Schristos (int sig, _gl_function_taking_int_returning_void_t func)); 816*fd82c4c4Schristos # else 817*fd82c4c4Schristos /* On OpenBSD, the declaration of 'signal' may not be present at this point, 818*fd82c4c4Schristos because it occurs in <sys/signal.h>, not <signal.h> directly. */ 819*fd82c4c4Schristos # if defined __OpenBSD__ 820*fd82c4c4Schristos _GL_FUNCDECL_SYS (signal, _gl_function_taking_int_returning_void_t, 821*fd82c4c4Schristos (int sig, _gl_function_taking_int_returning_void_t func)); 822*fd82c4c4Schristos # endif 823*fd82c4c4Schristos _GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t, 824*fd82c4c4Schristos (int sig, _gl_function_taking_int_returning_void_t func)); 825*fd82c4c4Schristos # endif 826*fd82c4c4Schristos # if __GLIBC__ >= 2 827*fd82c4c4Schristos _GL_CXXALIASWARN (signal); 828*fd82c4c4Schristos # endif 829*fd82c4c4Schristos 830*fd82c4c4Schristos # if !1 && GNULIB_defined_SIGPIPE 831*fd82c4c4Schristos /* Raise signal SIGPIPE. */ 832*fd82c4c4Schristos _GL_EXTERN_C int _gl_raise_SIGPIPE (void); 833*fd82c4c4Schristos # endif 834*fd82c4c4Schristos 835*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 836*fd82c4c4Schristos # undef sigaddset 837*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGADDSET 838*fd82c4c4Schristos _GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - " 839*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 840*fd82c4c4Schristos # endif 841*fd82c4c4Schristos # undef sigdelset 842*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGDELSET 843*fd82c4c4Schristos _GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - " 844*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 845*fd82c4c4Schristos # endif 846*fd82c4c4Schristos # undef sigemptyset 847*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGEMPTYSET 848*fd82c4c4Schristos _GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - " 849*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 850*fd82c4c4Schristos # endif 851*fd82c4c4Schristos # undef sigfillset 852*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGFILLSET 853*fd82c4c4Schristos _GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - " 854*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 855*fd82c4c4Schristos # endif 856*fd82c4c4Schristos # undef sigismember 857*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGISMEMBER 858*fd82c4c4Schristos _GL_WARN_ON_USE (sigismember, "sigismember is unportable - " 859*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 860*fd82c4c4Schristos # endif 861*fd82c4c4Schristos # undef sigpending 862*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGPENDING 863*fd82c4c4Schristos _GL_WARN_ON_USE (sigpending, "sigpending is unportable - " 864*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 865*fd82c4c4Schristos # endif 866*fd82c4c4Schristos # undef sigprocmask 867*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGPROCMASK 868*fd82c4c4Schristos _GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - " 869*fd82c4c4Schristos "use the gnulib module sigprocmask for portability"); 870*fd82c4c4Schristos # endif 871*fd82c4c4Schristos #endif /* 0 */ 872*fd82c4c4Schristos 873*fd82c4c4Schristos 874*fd82c4c4Schristos #if 0 875*fd82c4c4Schristos # if !1 876*fd82c4c4Schristos 877*fd82c4c4Schristos # if !1 878*fd82c4c4Schristos 879*fd82c4c4Schristos # if !GNULIB_defined_siginfo_types 880*fd82c4c4Schristos 881*fd82c4c4Schristos /* Present to allow compilation, but unsupported by gnulib. */ 882*fd82c4c4Schristos union sigval 883*fd82c4c4Schristos { 884*fd82c4c4Schristos int sival_int; 885*fd82c4c4Schristos void *sival_ptr; 886*fd82c4c4Schristos }; 887*fd82c4c4Schristos 888*fd82c4c4Schristos /* Present to allow compilation, but unsupported by gnulib. */ 889*fd82c4c4Schristos struct siginfo_t 890*fd82c4c4Schristos { 891*fd82c4c4Schristos int si_signo; 892*fd82c4c4Schristos int si_code; 893*fd82c4c4Schristos int si_errno; 894*fd82c4c4Schristos pid_t si_pid; 895*fd82c4c4Schristos uid_t si_uid; 896*fd82c4c4Schristos void *si_addr; 897*fd82c4c4Schristos int si_status; 898*fd82c4c4Schristos long si_band; 899*fd82c4c4Schristos union sigval si_value; 900*fd82c4c4Schristos }; 901*fd82c4c4Schristos typedef struct siginfo_t siginfo_t; 902*fd82c4c4Schristos 903*fd82c4c4Schristos # define GNULIB_defined_siginfo_types 1 904*fd82c4c4Schristos # endif 905*fd82c4c4Schristos 906*fd82c4c4Schristos # endif /* !1 */ 907*fd82c4c4Schristos 908*fd82c4c4Schristos /* We assume that platforms which lack the sigaction() function also lack 909*fd82c4c4Schristos the 'struct sigaction' type, and vice versa. */ 910*fd82c4c4Schristos 911*fd82c4c4Schristos # if !GNULIB_defined_struct_sigaction 912*fd82c4c4Schristos 913*fd82c4c4Schristos struct sigaction 914*fd82c4c4Schristos { 915*fd82c4c4Schristos union 916*fd82c4c4Schristos { 917*fd82c4c4Schristos void (*_sa_handler) (int); 918*fd82c4c4Schristos /* Present to allow compilation, but unsupported by gnulib. POSIX 919*fd82c4c4Schristos says that implementations may, but not must, make sa_sigaction 920*fd82c4c4Schristos overlap with sa_handler, but we know of no implementation where 921*fd82c4c4Schristos they do not overlap. */ 922*fd82c4c4Schristos void (*_sa_sigaction) (int, siginfo_t *, void *); 923*fd82c4c4Schristos } _sa_func; 924*fd82c4c4Schristos sigset_t sa_mask; 925*fd82c4c4Schristos /* Not all POSIX flags are supported. */ 926*fd82c4c4Schristos int sa_flags; 927*fd82c4c4Schristos }; 928*fd82c4c4Schristos # define sa_handler _sa_func._sa_handler 929*fd82c4c4Schristos # define sa_sigaction _sa_func._sa_sigaction 930*fd82c4c4Schristos /* Unsupported flags are not present. */ 931*fd82c4c4Schristos # define SA_RESETHAND 1 932*fd82c4c4Schristos # define SA_NODEFER 2 933*fd82c4c4Schristos # define SA_RESTART 4 934*fd82c4c4Schristos 935*fd82c4c4Schristos # define GNULIB_defined_struct_sigaction 1 936*fd82c4c4Schristos # endif 937*fd82c4c4Schristos 938*fd82c4c4Schristos _GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict, 939*fd82c4c4Schristos struct sigaction *restrict)); 940*fd82c4c4Schristos 941*fd82c4c4Schristos # elif !1 942*fd82c4c4Schristos 943*fd82c4c4Schristos # define sa_sigaction sa_handler 944*fd82c4c4Schristos 945*fd82c4c4Schristos # endif /* !1, !1 */ 946*fd82c4c4Schristos 947*fd82c4c4Schristos _GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict, 948*fd82c4c4Schristos struct sigaction *restrict)); 949*fd82c4c4Schristos _GL_CXXALIASWARN (sigaction); 950*fd82c4c4Schristos 951*fd82c4c4Schristos #elif defined GNULIB_POSIXCHECK 952*fd82c4c4Schristos # undef sigaction 953*fd82c4c4Schristos # if HAVE_RAW_DECL_SIGACTION 954*fd82c4c4Schristos _GL_WARN_ON_USE (sigaction, "sigaction is unportable - " 955*fd82c4c4Schristos "use the gnulib module sigaction for portability"); 956*fd82c4c4Schristos # endif 957*fd82c4c4Schristos #endif 958*fd82c4c4Schristos 959*fd82c4c4Schristos /* Some systems don't have SA_NODEFER. */ 960*fd82c4c4Schristos #ifndef SA_NODEFER 961*fd82c4c4Schristos # define SA_NODEFER 0 962*fd82c4c4Schristos #endif 963*fd82c4c4Schristos 964*fd82c4c4Schristos 965*fd82c4c4Schristos #endif /* _GL_SIGNAL_H */ 966*fd82c4c4Schristos #endif /* _GL_SIGNAL_H */ 967*fd82c4c4Schristos #endif 968