-/* ANSI and traditional C compatability macros
- Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+/* Compiler compatibility macros
+ Copyright (C) 1991-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
-/* ANSI and traditional C compatibility macros
-
- ANSI C is assumed if __STDC__ is #defined.
-
- 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 <varargs.h> and C89 <stdarg.h> 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
+/* 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
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/* Every source file includes this file,
so they will all get the switch for lint. */
/* LINTLIBRARY */
#define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
#endif /* GCC_VERSION */
-#if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(_WIN32) || (defined(__alpha) && defined(__cplusplus))
-/* All known AIX compilers implement these things (but don't always
- define __STDC__). The RISC/OS MIPS compiler defines these things
- in SVR4 mode, but does not define __STDC__. */
-/* eraxxon@alumni.rice.edu: The Compaq C++ compiler, unlike many other
- 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
-
/* 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
+#if (!defined(__cplusplus) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__))
/* it's a keyword */
#else
# if GCC_VERSION >= 2007
# 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
-#undef volatile
-#undef signed
-#undef inline
-#define const
-#define volatile
-#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
macros freely, and know that they will come into play for the
version of gcc in which they are supported. */
# 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
# 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)
# endif /* GNUC >= 3.0 */
#endif /* ATTRIBUTE_ALIGNED_ALIGNOF */
-/* Useful for structures whose layout must much some binary specification
+/* Useful for structures whose layout must match some binary specification
regardless of the alignment and padding qualities of the compiler. */
#ifndef ATTRIBUTE_PACKED
# define ATTRIBUTE_PACKED __attribute__ ((packed))
#endif
+/* Attribute `hot' and `cold' was valid as of gcc 4.3. */
+#ifndef ATTRIBUTE_COLD
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+# define ATTRIBUTE_COLD
+# endif /* GNUC >= 4.3 */
+#endif /* ATTRIBUTE_COLD */
+#ifndef ATTRIBUTE_HOT
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_HOT __attribute__ ((__hot__))
+# else
+# define ATTRIBUTE_HOT
+# endif /* GNUC >= 4.3 */
+#endif /* ATTRIBUTE_HOT */
+
+/* Attribute 'no_sanitize_undefined' was valid as of gcc 4.9. */
+#ifndef ATTRIBUTE_NO_SANITIZE_UNDEFINED
+# if (GCC_VERSION >= 4009)
+# define ATTRIBUTE_NO_SANITIZE_UNDEFINED __attribute__ ((no_sanitize_undefined))
+# else
+# define ATTRIBUTE_NO_SANITIZE_UNDEFINED
+# endif /* GNUC >= 4.9 */
+#endif /* ATTRIBUTE_NO_SANITIZE_UNDEFINED */
+
+/* Attribute 'nonstring' was valid as of gcc 8. */
+#ifndef ATTRIBUTE_NONSTRING
+# if GCC_VERSION >= 8000
+# define ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+# else
+# define ATTRIBUTE_NONSTRING
+# endif
+#endif
+
+/* Attribute `alloc_size' was valid as of gcc 4.3. */
+#ifndef ATTRIBUTE_RESULT_SIZE_1
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_RESULT_SIZE_1 __attribute__ ((alloc_size (1)))
+# else
+# define ATTRIBUTE_RESULT_SIZE_1
+#endif
+#endif
+
+#ifndef ATTRIBUTE_RESULT_SIZE_2
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_RESULT_SIZE_2 __attribute__ ((alloc_size (2)))
+# else
+# define ATTRIBUTE_RESULT_SIZE_2
+#endif
+#endif
+
+#ifndef ATTRIBUTE_RESULT_SIZE_1_2
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_RESULT_SIZE_1_2 __attribute__ ((alloc_size (1, 2)))
+# else
+# define ATTRIBUTE_RESULT_SIZE_1_2
+#endif
+#endif
+
+/* Attribute `warn_unused_result' was valid as of gcc 3.3. */
+#ifndef ATTRIBUTE_WARN_UNUSED_RESULT
+# if GCC_VERSION >= 3003
+# define ATTRIBUTE_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
+# else
+# define ATTRIBUTE_WARN_UNUSED_RESULT
+# endif
+#endif
+
/* We use __extension__ in some places to suppress -pedantic warnings
about GCC extensions. This feature didn't work properly before
gcc 2.8. */
#define __extension__
#endif
+/* This is used to declare a const variable which should be visible
+ outside of the current compilation unit. Use it as
+ EXPORTED_CONST int i = 1;
+ This is because the semantics of const are different in C and C++.
+ "extern const" is permitted in C but it looks strange, and gcc
+ warns about it when -Wc++-compat is not used. */
+#ifdef __cplusplus
+#define EXPORTED_CONST extern const
+#else
+#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
+
+#if defined(__cplusplus) && __cpp_constexpr >= 200704
+#define CONSTEXPR constexpr
+#else
+#define CONSTEXPR
+#endif
+
+/* A macro to disable the copy constructor and assignment operator.
+ When building with C++11 and above, the methods are explicitly
+ deleted, causing a compile-time error if something tries to copy.
+ For C++03, this just declares the methods, causing a link-time
+ error if the methods end up called (assuming you don't
+ define them). For C++03, for best results, place the macro
+ under the private: access specifier, like this,
+
+ class name_lookup
+ {
+ private:
+ DISABLE_COPY_AND_ASSIGN (name_lookup);
+ };
+
+ so that most attempts at copy are caught at compile-time. */
+
+#if defined(__cplusplus) && __cplusplus >= 201103
+#define DISABLE_COPY_AND_ASSIGN(TYPE) \
+ TYPE (const TYPE&) = delete; \
+ void operator= (const TYPE &) = delete
+ #else
+#define DISABLE_COPY_AND_ASSIGN(TYPE) \
+ TYPE (const TYPE&); \
+ void operator= (const TYPE &)
+#endif /* __cplusplus >= 201103 */
+
+#ifdef __cplusplus
+}
+#endif
+
#endif /* ansidecl.h */
projects / thirdparty / binutils-gdb.git / blobdiff