X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fansidecl.h;h=0fb23bba792dbb30d852723b9ac9a5d337e3aedc;hb=2ecd0181cd85d23ac9d8922109e2a1583c6d17e1;hp=f9864cd386424ece83ec45dda3d2a2d27ae51bf2;hpb=8466c6d4d39ac880edc6c44e60585517c20e4068;p=platform%2Fupstream%2Fbinutils.git diff --git a/include/ansidecl.h b/include/ansidecl.h index f9864cd..0fb23bb 100644 --- a/include/ansidecl.h +++ b/include/ansidecl.h @@ -1,6 +1,6 @@ /* ANSI and traditional C compatability macros Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, - 2002, 2003, 2004, 2005, 2006, 2007, 2009 + 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2013 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -24,93 +24,16 @@ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. Macro ANSI C definition Traditional C definition ----- ---- - ---------- ----------- - ---------- - ANSI_PROTOTYPES 1 not defined PTR `void *' `char *' - PTRCONST `void *const' `char *' - LONG_DOUBLE `long double' `double' const not defined `' volatile not defined `' signed not defined `' - VA_START(ap, var) va_start(ap, var) va_start(ap) - - Note that it is safe to write "void foo();" indicating a function - with no return value, in all K+R compilers we have been able to test. - - For declaring functions with prototypes, we also provide these: - - PARAMS ((prototype)) - -- for functions which take a fixed number of arguments. Use this - when declaring the function. When defining the function, write a - K+R style argument list. For example: - - char *strcpy PARAMS ((char *dest, char *source)); - ... - char * - strcpy (dest, source) - char *dest; - char *source; - { ... } - - - VPARAMS ((prototype, ...)) - -- for functions which take a variable number of arguments. Use - PARAMS to declare the function, VPARAMS to define it. For example: - - int printf PARAMS ((const char *format, ...)); - ... - int - printf VPARAMS ((const char *format, ...)) - { - ... - } - - For writing functions which take variable numbers of arguments, we - also provide the VA_OPEN, VA_CLOSE, and VA_FIXEDARG macros. These - hide the differences between K+R and C89 more - thoroughly than the simple VA_START() macro mentioned above. - - VA_OPEN and VA_CLOSE are used *instead of* va_start and va_end. - Immediately after VA_OPEN, put a sequence of VA_FIXEDARG calls - corresponding to the list of fixed arguments. Then use va_arg - normally to get the variable arguments, or pass your va_list object - around. You do not declare the va_list yourself; VA_OPEN does it - for you. - - Here is a complete example: - - int - printf VPARAMS ((const char *format, ...)) - { - int result; - - VA_OPEN (ap, format); - VA_FIXEDARG (ap, const char *, format); - - result = vfprintf (stdout, format, ap); - VA_CLOSE (ap); - - return result; - } - - - You can declare variables either before or after the VA_OPEN, - VA_FIXEDARG sequence. Also, VA_OPEN and VA_CLOSE are the beginning - and end of a block. They must appear at the same nesting level, - and any variables declared after VA_OPEN go out of scope at - VA_CLOSE. Unfortunately, with a K+R compiler, that includes the - argument list. You can have multiple instances of VA_OPEN/VA_CLOSE - pairs in a single function in case you need to traverse the - argument list more than once. For ease of writing code which uses GCC extensions but needs to be portable to other compilers, we provide the GCC_VERSION macro that simplifies testing __GNUC__ and __GNUC_MINOR__ together, and various wrappers around __attribute__. Also, __extension__ will be #defined - to nothing if it doesn't work. See below. - - This header also defines a lot of obsolete macros: - CONST, VOLATILE, SIGNED, PROTO, EXFUN, DEFUN, DEFUN_VOID, - AND, DOTS, NOARGS. Don't use them. */ + to nothing if it doesn't work. See below. */ #ifndef _ANSIDECL_H #define _ANSIDECL_H 1 @@ -149,28 +72,8 @@ So instead we use the macro below and test it against specific values. */ C++ compilers, does not define __STDC__, though it acts as if this was so. (Verified versions: 5.7, 6.2, 6.3, 6.5) */ -#define ANSI_PROTOTYPES 1 #define PTR void * -#define PTRCONST void *const -#define LONG_DOUBLE long double -/* PARAMS is often defined elsewhere (e.g. by libintl.h), so wrap it in - a #ifndef. */ -#ifndef PARAMS -#define PARAMS(ARGS) ARGS -#endif - -#define VPARAMS(ARGS) ARGS -#define VA_START(VA_LIST, VAR) va_start(VA_LIST, VAR) - -/* variadic function helper macros */ -/* "struct Qdmy" swallows the semicolon after VA_OPEN/VA_FIXEDARG's - use without inhibiting further decls and without declaring an - actual variable. */ -#define VA_OPEN(AP, VAR) { va_list AP; va_start(AP, VAR); { struct Qdmy -#define VA_CLOSE(AP) } va_end(AP); } -#define VA_FIXEDARG(AP, T, N) struct Qdmy - #undef const #undef volatile #undef signed @@ -178,7 +81,7 @@ So instead we use the macro below and test it against specific values. */ /* inline requires special treatment; it's in C99, and GCC >=2.7 supports it too, but it's not in C89. */ #undef inline -#if __STDC_VERSION__ > 199901L || defined(__cplusplus) +#if __STDC_VERSION__ >= 199901L || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__)) /* it's a keyword */ #else # if GCC_VERSION >= 2007 @@ -188,35 +91,9 @@ So instead we use the macro below and test it against specific values. */ # endif #endif -/* These are obsolete. Do not use. */ -#ifndef IN_GCC -#define CONST const -#define VOLATILE volatile -#define SIGNED signed - -#define PROTO(type, name, arglist) type name arglist -#define EXFUN(name, proto) name proto -#define DEFUN(name, arglist, args) name(args) -#define DEFUN_VOID(name) name(void) -#define AND , -#define DOTS , ... -#define NOARGS void -#endif /* ! IN_GCC */ - #else /* Not ANSI C. */ -#undef ANSI_PROTOTYPES #define PTR char * -#define PTRCONST PTR -#define LONG_DOUBLE double - -#define PARAMS(args) () -#define VPARAMS(args) (va_alist) va_dcl -#define VA_START(va_list, var) va_start(va_list) - -#define VA_OPEN(AP, VAR) { va_list AP; va_start(AP); { struct Qdmy -#define VA_CLOSE(AP) } va_end(AP); } -#define VA_FIXEDARG(AP, TYPE, NAME) TYPE NAME = va_arg(AP, TYPE) /* some systems define these in header files for non-ansi mode */ #undef const @@ -228,20 +105,6 @@ So instead we use the macro below and test it against specific values. */ #define signed #define inline -#ifndef IN_GCC -#define CONST -#define VOLATILE -#define SIGNED - -#define PROTO(type, name, arglist) type name () -#define EXFUN(name, proto) name() -#define DEFUN(name, arglist, args) name arglist args; -#define DEFUN_VOID(name) name() -#define AND ; -#define DOTS -#define NOARGS -#endif /* ! IN_GCC */ - #endif /* ANSI C. */ /* Define macros for some gcc attributes. This permits us to use the @@ -261,17 +124,33 @@ So instead we use the macro below and test it against specific values. */ # endif /* GNUC >= 2.96 */ #endif /* ATTRIBUTE_MALLOC */ -/* Attributes on labels were valid as of gcc 2.93. */ +/* Attributes on labels were valid as of gcc 2.93 and g++ 4.5. For + g++ an attribute on a label must be followed by a semicolon. */ #ifndef ATTRIBUTE_UNUSED_LABEL -# if (!defined (__cplusplus) && GCC_VERSION >= 2093) -# define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED +# ifndef __cplusplus +# if GCC_VERSION >= 2093 +# define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED +# else +# define ATTRIBUTE_UNUSED_LABEL +# endif # else -# define ATTRIBUTE_UNUSED_LABEL -# endif /* !__cplusplus && GNUC >= 2.93 */ -#endif /* ATTRIBUTE_UNUSED_LABEL */ +# if GCC_VERSION >= 4005 +# define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED ; +# else +# define ATTRIBUTE_UNUSED_LABEL +# endif +# endif +#endif +/* Similarly to ARG_UNUSED below. Prior to GCC 3.4, the C++ frontend + couldn't parse attributes placed after the identifier name, and now + the entire compiler is built with C++. */ #ifndef ATTRIBUTE_UNUSED -#define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#if GCC_VERSION >= 3004 +# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#else +#define ATTRIBUTE_UNUSED +#endif #endif /* ATTRIBUTE_UNUSED */ /* Before GCC 3.4, the C++ frontend couldn't parse attributes placed after the @@ -295,6 +174,15 @@ So instead we use the macro below and test it against specific values. */ # endif /* GNUC >= 3.3 */ #endif /* ATTRIBUTE_NONNULL */ +/* Attribute `returns_nonnull' was valid as of gcc 4.9. */ +#ifndef ATTRIBUTE_RETURNS_NONNULL +# if (GCC_VERSION >= 4009) +# define ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__)) +# else +# define ATTRIBUTE_RETURNS_NONNULL +# endif /* GNUC >= 4.9 */ +#endif /* ATTRIBUTE_RETURNS_NONNULL */ + /* Attribute `pure' was valid as of gcc 3.0. */ #ifndef ATTRIBUTE_PURE # if (GCC_VERSION >= 3000) @@ -407,6 +295,17 @@ So instead we use the macro below and test it against specific values. */ #define EXPORTED_CONST const #endif +/* Be conservative and only use enum bitfields with C++ or GCC. + FIXME: provide a complete autoconf test for buggy enum bitfields. */ + +#ifdef __cplusplus +#define ENUM_BITFIELD(TYPE) enum TYPE +#elif (GCC_VERSION > 2000) +#define ENUM_BITFIELD(TYPE) __extension__ enum TYPE +#else +#define ENUM_BITFIELD(TYPE) unsigned int +#endif + #ifdef __cplusplus } #endif