1# Copyright (C) 2002-2004, 2006-2018 Free Software Foundation, Inc. 2# This file is free software; the Free Software Foundation 3# gives unlimited permission to copy and/or distribute it, 4# with or without modifications, as long as this notice is preserved. 5 6# Copyright 2012-2018 Free Software Foundation, Inc. 7# This file is free software; the Free Software Foundation 8# gives unlimited permission to copy and/or distribute it, 9# with or without modifications, as long as this notice is preserved. 10 11gl_extern_inline = ''' 12/* Please see the Gnulib manual for how to use these macros. 13 14 Suppress extern inline with HP-UX cc, as it appears to be broken; see 15 <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>. 16 17 Suppress extern inline with Sun C in standards-conformance mode, as it 18 mishandles inline functions that call each other. E.g., for 'inline void f 19 (void) { } inline void g (void) { f (); }', c99 incorrectly complains 20 'reference to static identifier "f" in extern inline function'. 21 This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16. 22 23 Suppress extern inline (with or without __attribute__ ((__gnu_inline__))) 24 on configurations that mistakenly use 'static inline' to implement 25 functions or macros in standard C headers like <ctype.h>. For example, 26 if isdigit is mistakenly implemented via a static inline function, 27 a program containing an extern inline function that calls isdigit 28 may not work since the C standard prohibits extern inline functions 29 from calling static functions. This bug is known to occur on: 30 31 OS X 10.8 and earlier; see: 32 https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html 33 34 DragonFly; see 35 http://muscles.dragonflybsd.org/bulk/bleeding-edge-potential/latest-per-pkg/ah-tty-0.3.12.log 36 37 FreeBSD; see: 38 https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html 39 40 OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and 41 for clang but remains for g++; see <https://trac.macports.org/ticket/41033>. 42 Assume DragonFly and FreeBSD will be similar. */ 43#if (((defined __APPLE__ && defined __MACH__) \ 44 || defined __DragonFly__ || defined __FreeBSD__) \ 45 && (defined __header_inline \ 46 ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \ 47 && ! defined __clang__) \ 48 : ((! defined _DONT_USE_CTYPE_INLINE_ \ 49 && (defined __GNUC__ || defined __cplusplus)) \ 50 || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \ 51 && defined __GNUC__ && ! defined __cplusplus)))) 52# define _GL_EXTERN_INLINE_STDHEADER_BUG 53#endif 54#if ((__GNUC__ \ 55 ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ 56 : (199901L <= __STDC_VERSION__ \ 57 && !defined __HP_cc \ 58 && !defined __PGI \ 59 && !(defined __SUNPRO_C && __STDC__))) \ 60 && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) 61# define _GL_INLINE inline 62# define _GL_EXTERN_INLINE extern inline 63# define _GL_EXTERN_INLINE_IN_USE 64#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ 65 && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) 66# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__ 67 /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ 68# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__)) __attribute__ ((always_inline)) 69# else 70# define _GL_INLINE extern inline 71# endif 72# define _GL_EXTERN_INLINE extern 73# define _GL_EXTERN_INLINE_IN_USE 74#else 75# define _GL_INLINE static _GL_UNUSED 76# define _GL_EXTERN_INLINE static _GL_UNUSED 77#endif 78 79/* In GCC 4.6 (inclusive) to 5.1 (exclusive), 80 suppress bogus "no previous prototype for 'FOO'" 81 and "no previous declaration for 'FOO'" diagnostics, 82 when FOO is an inline function in the header; see 83 <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and 84 <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>. */ 85#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__ 86# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ 87# define _GL_INLINE_HEADER_CONST_PRAGMA 88# else 89# define _GL_INLINE_HEADER_CONST_PRAGMA \ 90 _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") 91# endif 92# define _GL_INLINE_HEADER_BEGIN \ 93 _Pragma ("GCC diagnostic push") \ 94 _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ 95 _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \ 96 _GL_INLINE_HEADER_CONST_PRAGMA 97# define _GL_INLINE_HEADER_END \ 98 _Pragma ("GCC diagnostic pop") 99#else 100# define _GL_INLINE_HEADER_BEGIN 101# define _GL_INLINE_HEADER_END 102#endif 103''' 104