1997-08-22 00:57:35 +02:00
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/* ANSI and traditional C compatability macros
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2019-01-01 13:31:55 +01:00
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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1997-08-22 00:57:35 +02:00
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This file is part of the GNU C Library.
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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 2 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
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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, write to the Free Software
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2005-05-10 17:22:21 +02:00
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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1997-08-22 00:57:35 +02:00
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/* ANSI and traditional C compatibility macros
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ANSI C is assumed if __STDC__ is #defined.
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2001-08-18 22:46:45 +02:00
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Macro ANSI C definition Traditional C definition
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----- ---- - ---------- ----------- - ----------
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PTR `void *' `char *'
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const not defined `'
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volatile not defined `'
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signed not defined `'
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For ease of writing code which uses GCC extensions but needs to be
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portable to other compilers, we provide the GCC_VERSION macro that
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simplifies testing __GNUC__ and __GNUC_MINOR__ together, and various
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wrappers around __attribute__. Also, __extension__ will be #defined
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include
* ansidecl.h (ANSI_PROTOTYPES, PTRCONST, LONG_DOUBLE, PARAMS)
(VPARAMS, VA_START, VA_OPEN, VA_CLOSE, VA_FIXEDARG, CONST)
(VOLATILE, SIGNED, PROTO, EXFUN, DEFUN, DEFUN_VOID, AND, DOTS)
(NOARGS): Don't define.
* libiberty.h (expandargv, writeargv): Don't use PARAMS.
libiberty
* _doprint.c (checkit): Use stdarg, not VA_* macros.
* asprintf.c (asprintf): Use stdarg, not VA_* macros.
* concat.c (concat_length, concat_copy, concat_copy2, concat)
(reconcat): Use stdarg, not VA_* macros.
* snprintf.c (snprintf): Use stdarg, not VA_* macros.
* vasprintf.c (checkit): Use stdarg, not VA_* macros.
* vsnprintf.c (checkit): Use stdarg, not VA_* macros.
From-SVN: r206881
2014-01-21 16:09:10 +01:00
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to nothing if it doesn't work. See below. */
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1997-08-22 00:57:35 +02:00
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#ifndef _ANSIDECL_H
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2001-08-18 22:46:45 +02:00
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#define _ANSIDECL_H 1
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1997-08-22 00:57:35 +02:00
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2009-06-01 07:47:20 +02:00
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#ifdef __cplusplus
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extern "C" {
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#endif
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1997-08-22 00:57:35 +02:00
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/* Every source file includes this file,
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so they will all get the switch for lint. */
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/* LINTLIBRARY */
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2001-08-18 22:46:45 +02:00
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/* Using MACRO(x,y) in cpp #if conditionals does not work with some
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older preprocessors. Thus we can't define something like this:
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#define HAVE_GCC_VERSION(MAJOR, MINOR) \
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(__GNUC__ > (MAJOR) || (__GNUC__ == (MAJOR) && __GNUC_MINOR__ >= (MINOR)))
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and then test "#if HAVE_GCC_VERSION(2,7)".
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So instead we use the macro below and test it against specific values. */
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/* This macro simplifies testing whether we are using gcc, and if it
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is of a particular minimum version. (Both major & minor numbers are
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significant.) This macro will evaluate to 0 if we are not using
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gcc at all. */
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#ifndef GCC_VERSION
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#define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
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#endif /* GCC_VERSION */
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1997-08-22 00:57:35 +02:00
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2009-06-01 07:47:20 +02:00
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#if defined (__STDC__) || defined(__cplusplus) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(_WIN32)
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1997-08-22 00:57:35 +02:00
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/* All known AIX compilers implement these things (but don't always
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define __STDC__). The RISC/OS MIPS compiler defines these things
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in SVR4 mode, but does not define __STDC__. */
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2002-10-25 01:36:25 +02:00
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/* eraxxon@alumni.rice.edu: The Compaq C++ compiler, unlike many other
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C++ compilers, does not define __STDC__, though it acts as if this
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was so. (Verified versions: 5.7, 6.2, 6.3, 6.5) */
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1997-08-22 00:57:35 +02:00
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2001-08-18 22:46:45 +02:00
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#define PTR void *
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#undef const
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#undef volatile
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#undef signed
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/* inline requires special treatment; it's in C99, and GCC >=2.7 supports
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it too, but it's not in C89. */
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#undef inline
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2010-01-05 18:14:30 +01:00
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#if __STDC_VERSION__ >= 199901L || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__))
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2001-08-18 22:46:45 +02:00
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/* it's a keyword */
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#else
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# if GCC_VERSION >= 2007
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# define inline __inline__ /* __inline__ prevents -pedantic warnings */
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# else
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# define inline /* nothing */
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# endif
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#endif
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1997-08-22 00:57:35 +02:00
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#else /* Not ANSI C. */
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2001-08-18 22:46:45 +02:00
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#define PTR char *
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/* some systems define these in header files for non-ansi mode */
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#undef const
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#undef volatile
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#undef signed
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#undef inline
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#define const
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#define volatile
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#define signed
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#define inline
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1997-08-22 00:57:35 +02:00
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#endif /* ANSI C. */
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1999-07-26 21:22:19 +02:00
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/* Define macros for some gcc attributes. This permits us to use the
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macros freely, and know that they will come into play for the
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version of gcc in which they are supported. */
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1999-11-10 18:57:21 +01:00
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#if (GCC_VERSION < 2007)
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1999-07-26 21:22:19 +02:00
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# define __attribute__(x)
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#endif
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1999-12-01 00:56:52 +01:00
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/* Attribute __malloc__ on functions was valid as of gcc 2.96. */
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#ifndef ATTRIBUTE_MALLOC
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# if (GCC_VERSION >= 2096)
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# define ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
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# else
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# define ATTRIBUTE_MALLOC
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# endif /* GNUC >= 2.96 */
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#endif /* ATTRIBUTE_MALLOC */
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2009-06-10 03:48:14 +02:00
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/* Attributes on labels were valid as of gcc 2.93 and g++ 4.5. For
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g++ an attribute on a label must be followed by a semicolon. */
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1999-07-26 21:22:19 +02:00
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#ifndef ATTRIBUTE_UNUSED_LABEL
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2009-06-10 03:48:14 +02:00
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# ifndef __cplusplus
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# if GCC_VERSION >= 2093
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# define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED
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# else
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# define ATTRIBUTE_UNUSED_LABEL
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# endif
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1999-11-10 18:57:21 +01:00
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# else
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2009-06-10 03:48:14 +02:00
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# if GCC_VERSION >= 4005
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# define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED ;
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# else
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# define ATTRIBUTE_UNUSED_LABEL
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# endif
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# endif
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#endif
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1999-07-26 21:22:19 +02:00
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2012-12-18 16:19:43 +01:00
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/* Similarly to ARG_UNUSED below. Prior to GCC 3.4, the C++ frontend
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couldn't parse attributes placed after the identifier name, and now
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the entire compiler is built with C++. */
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1999-07-26 21:22:19 +02:00
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#ifndef ATTRIBUTE_UNUSED
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2012-12-18 16:19:43 +01:00
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#if GCC_VERSION >= 3004
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# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
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#else
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#define ATTRIBUTE_UNUSED
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#endif
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1999-07-26 21:22:19 +02:00
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#endif /* ATTRIBUTE_UNUSED */
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2004-07-24 19:49:27 +02:00
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/* Before GCC 3.4, the C++ frontend couldn't parse attributes placed after the
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identifier name. */
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#if ! defined(__cplusplus) || (GCC_VERSION >= 3004)
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# define ARG_UNUSED(NAME) NAME ATTRIBUTE_UNUSED
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#else /* !__cplusplus || GNUC >= 3.4 */
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# define ARG_UNUSED(NAME) NAME
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#endif /* !__cplusplus || GNUC >= 3.4 */
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1999-07-26 21:22:19 +02:00
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#ifndef ATTRIBUTE_NORETURN
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#define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
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#endif /* ATTRIBUTE_NORETURN */
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ansidecl.h (ATTRIBUTE_NONNULL, [...]): New.
include:
* ansidecl.h (ATTRIBUTE_NONNULL, ATTRIBUTE_NULL_PRINTF,
ATTRIBUTE_NULL_PRINTF_1, ATTRIBUTE_NULL_PRINTF_2,
ATTRIBUTE_NULL_PRINTF_3, ATTRIBUTE_NULL_PRINTF_4,
ATTRIBUTE_NULL_PRINTF_5): New.
(ATTRIBUTE_PRINTF): Add ATTRIBUTE_NONNULL.
gcc:
* dwarf2asm.h: Delete obsolete comment.
(dw2_asm_output_data, dw2_asm_output_delta, dw2_asm_output_offset,
dw2_asm_output_pcrel, dw2_asm_output_addr,
dw2_asm_output_addr_rtx, dw2_asm_output_encoded_addr_rtx,
dw2_asm_output_nstring, dw2_asm_output_data_uleb128,
dw2_asm_output_data_sleb128, dw2_asm_output_delta_uleb128,
dw2_asm_output_delta_sleb128): Add ATTRIBUTE_NULL_PRINTF.
From-SVN: r64505
2003-03-17 23:57:27 +01:00
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/* Attribute `nonnull' was valid as of gcc 3.3. */
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#ifndef ATTRIBUTE_NONNULL
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# if (GCC_VERSION >= 3003)
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# define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
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# else
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# define ATTRIBUTE_NONNULL(m)
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# endif /* GNUC >= 3.3 */
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#endif /* ATTRIBUTE_NONNULL */
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re PR tree-optimization/58689 ([meta-bug] __attribute__((returns_nonnull)) enhancements)
2013-10-29 Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/58689
include/
* ansidecl.h (ATTRIBUTE_RETURNS_NONNULL): New macro.
* libiberty.h (basename, lbasename, dos_lbasename, unix_lbasename,
concat_copy): Mark with attributes nonnull(1) and returns_nonnull.
(concat, reconcat, concat_copy2, choose_temp_base, xstrerror,
xmalloc, xrealloc, xcalloc, xstrdup, xstrndup, xmemdup, pex_init):
Mark with attribute returns_nonnull.
libiberty/
* concat.c: Remove note about xmalloc.
From-SVN: r204159
2013-10-29 14:15:48 +01:00
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/* Attribute `returns_nonnull' was valid as of gcc 4.9. */
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#ifndef ATTRIBUTE_RETURNS_NONNULL
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# if (GCC_VERSION >= 4009)
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# define ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
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# else
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# define ATTRIBUTE_RETURNS_NONNULL
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# endif /* GNUC >= 4.9 */
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#endif /* ATTRIBUTE_RETURNS_NONNULL */
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2004-07-21 10:25:57 +02:00
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/* Attribute `pure' was valid as of gcc 3.0. */
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#ifndef ATTRIBUTE_PURE
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# if (GCC_VERSION >= 3000)
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# define ATTRIBUTE_PURE __attribute__ ((__pure__))
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# else
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# define ATTRIBUTE_PURE
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# endif /* GNUC >= 3.0 */
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#endif /* ATTRIBUTE_PURE */
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ansidecl.h (ATTRIBUTE_NONNULL, [...]): New.
include:
* ansidecl.h (ATTRIBUTE_NONNULL, ATTRIBUTE_NULL_PRINTF,
ATTRIBUTE_NULL_PRINTF_1, ATTRIBUTE_NULL_PRINTF_2,
ATTRIBUTE_NULL_PRINTF_3, ATTRIBUTE_NULL_PRINTF_4,
ATTRIBUTE_NULL_PRINTF_5): New.
(ATTRIBUTE_PRINTF): Add ATTRIBUTE_NONNULL.
gcc:
* dwarf2asm.h: Delete obsolete comment.
(dw2_asm_output_data, dw2_asm_output_delta, dw2_asm_output_offset,
dw2_asm_output_pcrel, dw2_asm_output_addr,
dw2_asm_output_addr_rtx, dw2_asm_output_encoded_addr_rtx,
dw2_asm_output_nstring, dw2_asm_output_data_uleb128,
dw2_asm_output_data_sleb128, dw2_asm_output_delta_uleb128,
dw2_asm_output_delta_sleb128): Add ATTRIBUTE_NULL_PRINTF.
From-SVN: r64505
2003-03-17 23:57:27 +01:00
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/* Use ATTRIBUTE_PRINTF when the format specifier must not be NULL.
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This was the case for the `printf' format attribute by itself
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before GCC 3.3, but as of 3.3 we need to add the `nonnull'
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attribute to retain this behavior. */
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1999-07-26 21:22:19 +02:00
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#ifndef ATTRIBUTE_PRINTF
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ansidecl.h (ATTRIBUTE_NONNULL, [...]): New.
include:
* ansidecl.h (ATTRIBUTE_NONNULL, ATTRIBUTE_NULL_PRINTF,
ATTRIBUTE_NULL_PRINTF_1, ATTRIBUTE_NULL_PRINTF_2,
ATTRIBUTE_NULL_PRINTF_3, ATTRIBUTE_NULL_PRINTF_4,
ATTRIBUTE_NULL_PRINTF_5): New.
(ATTRIBUTE_PRINTF): Add ATTRIBUTE_NONNULL.
gcc:
* dwarf2asm.h: Delete obsolete comment.
(dw2_asm_output_data, dw2_asm_output_delta, dw2_asm_output_offset,
dw2_asm_output_pcrel, dw2_asm_output_addr,
dw2_asm_output_addr_rtx, dw2_asm_output_encoded_addr_rtx,
dw2_asm_output_nstring, dw2_asm_output_data_uleb128,
dw2_asm_output_data_sleb128, dw2_asm_output_delta_uleb128,
dw2_asm_output_delta_sleb128): Add ATTRIBUTE_NULL_PRINTF.
From-SVN: r64505
2003-03-17 23:57:27 +01:00
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#define ATTRIBUTE_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n))) ATTRIBUTE_NONNULL(m)
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1999-07-26 21:22:19 +02:00
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#define ATTRIBUTE_PRINTF_1 ATTRIBUTE_PRINTF(1, 2)
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#define ATTRIBUTE_PRINTF_2 ATTRIBUTE_PRINTF(2, 3)
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#define ATTRIBUTE_PRINTF_3 ATTRIBUTE_PRINTF(3, 4)
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#define ATTRIBUTE_PRINTF_4 ATTRIBUTE_PRINTF(4, 5)
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#define ATTRIBUTE_PRINTF_5 ATTRIBUTE_PRINTF(5, 6)
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#endif /* ATTRIBUTE_PRINTF */
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2005-05-30 02:04:09 +02:00
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/* Use ATTRIBUTE_FPTR_PRINTF when the format attribute is to be set on
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a function pointer. Format attributes were allowed on function
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pointers as of gcc 3.1. */
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#ifndef ATTRIBUTE_FPTR_PRINTF
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# if (GCC_VERSION >= 3001)
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# define ATTRIBUTE_FPTR_PRINTF(m, n) ATTRIBUTE_PRINTF(m, n)
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# else
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# define ATTRIBUTE_FPTR_PRINTF(m, n)
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# endif /* GNUC >= 3.1 */
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# define ATTRIBUTE_FPTR_PRINTF_1 ATTRIBUTE_FPTR_PRINTF(1, 2)
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# define ATTRIBUTE_FPTR_PRINTF_2 ATTRIBUTE_FPTR_PRINTF(2, 3)
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# define ATTRIBUTE_FPTR_PRINTF_3 ATTRIBUTE_FPTR_PRINTF(3, 4)
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# define ATTRIBUTE_FPTR_PRINTF_4 ATTRIBUTE_FPTR_PRINTF(4, 5)
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# define ATTRIBUTE_FPTR_PRINTF_5 ATTRIBUTE_FPTR_PRINTF(5, 6)
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#endif /* ATTRIBUTE_FPTR_PRINTF */
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ansidecl.h (ATTRIBUTE_NONNULL, [...]): New.
include:
* ansidecl.h (ATTRIBUTE_NONNULL, ATTRIBUTE_NULL_PRINTF,
ATTRIBUTE_NULL_PRINTF_1, ATTRIBUTE_NULL_PRINTF_2,
ATTRIBUTE_NULL_PRINTF_3, ATTRIBUTE_NULL_PRINTF_4,
ATTRIBUTE_NULL_PRINTF_5): New.
(ATTRIBUTE_PRINTF): Add ATTRIBUTE_NONNULL.
gcc:
* dwarf2asm.h: Delete obsolete comment.
(dw2_asm_output_data, dw2_asm_output_delta, dw2_asm_output_offset,
dw2_asm_output_pcrel, dw2_asm_output_addr,
dw2_asm_output_addr_rtx, dw2_asm_output_encoded_addr_rtx,
dw2_asm_output_nstring, dw2_asm_output_data_uleb128,
dw2_asm_output_data_sleb128, dw2_asm_output_delta_uleb128,
dw2_asm_output_delta_sleb128): Add ATTRIBUTE_NULL_PRINTF.
From-SVN: r64505
2003-03-17 23:57:27 +01:00
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/* Use ATTRIBUTE_NULL_PRINTF when the format specifier may be NULL. A
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NULL format specifier was allowed as of gcc 3.3. */
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#ifndef ATTRIBUTE_NULL_PRINTF
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# if (GCC_VERSION >= 3003)
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# define ATTRIBUTE_NULL_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n)))
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# else
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# define ATTRIBUTE_NULL_PRINTF(m, n)
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# endif /* GNUC >= 3.3 */
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# define ATTRIBUTE_NULL_PRINTF_1 ATTRIBUTE_NULL_PRINTF(1, 2)
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# define ATTRIBUTE_NULL_PRINTF_2 ATTRIBUTE_NULL_PRINTF(2, 3)
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# define ATTRIBUTE_NULL_PRINTF_3 ATTRIBUTE_NULL_PRINTF(3, 4)
|
|
|
|
# define ATTRIBUTE_NULL_PRINTF_4 ATTRIBUTE_NULL_PRINTF(4, 5)
|
|
|
|
# define ATTRIBUTE_NULL_PRINTF_5 ATTRIBUTE_NULL_PRINTF(5, 6)
|
|
|
|
#endif /* ATTRIBUTE_NULL_PRINTF */
|
|
|
|
|
2004-09-05 04:50:09 +02:00
|
|
|
/* Attribute `sentinel' was valid as of gcc 3.5. */
|
|
|
|
#ifndef ATTRIBUTE_SENTINEL
|
|
|
|
# if (GCC_VERSION >= 3005)
|
|
|
|
# define ATTRIBUTE_SENTINEL __attribute__ ((__sentinel__))
|
|
|
|
# else
|
|
|
|
# define ATTRIBUTE_SENTINEL
|
|
|
|
# endif /* GNUC >= 3.5 */
|
|
|
|
#endif /* ATTRIBUTE_SENTINEL */
|
|
|
|
|
2005-07-03 17:38:39 +02:00
|
|
|
|
|
|
|
#ifndef ATTRIBUTE_ALIGNED_ALIGNOF
|
|
|
|
# if (GCC_VERSION >= 3000)
|
|
|
|
# define ATTRIBUTE_ALIGNED_ALIGNOF(m) __attribute__ ((__aligned__ (__alignof__ (m))))
|
|
|
|
# else
|
|
|
|
# define ATTRIBUTE_ALIGNED_ALIGNOF(m)
|
|
|
|
# endif /* GNUC >= 3.0 */
|
|
|
|
#endif /* ATTRIBUTE_ALIGNED_ALIGNOF */
|
|
|
|
|
2017-04-04 13:19:47 +02:00
|
|
|
/* Useful for structures whose layout must match some binary specification
|
2006-12-06 19:08:51 +01:00
|
|
|
regardless of the alignment and padding qualities of the compiler. */
|
|
|
|
#ifndef ATTRIBUTE_PACKED
|
|
|
|
# define ATTRIBUTE_PACKED __attribute__ ((packed))
|
|
|
|
#endif
|
|
|
|
|
2007-03-06 19:57:27 +01:00
|
|
|
/* 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 */
|
|
|
|
|
2015-03-04 18:28:56 +01:00
|
|
|
/* 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 */
|
|
|
|
|
2018-05-02 11:51:45 +02:00
|
|
|
/* 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
|
|
|
|
|
2000-05-06 22:00:03 +02:00
|
|
|
/* We use __extension__ in some places to suppress -pedantic warnings
|
|
|
|
about GCC extensions. This feature didn't work properly before
|
|
|
|
gcc 2.8. */
|
|
|
|
#if GCC_VERSION < 2008
|
|
|
|
#define __extension__
|
|
|
|
#endif
|
|
|
|
|
2009-06-03 22:19:55 +02:00
|
|
|
/* 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
|
|
|
|
|
2011-10-22 03:35:29 +02:00
|
|
|
/* Be conservative and only use enum bitfields with C++ or GCC.
|
2011-04-25 20:05:37 +02:00
|
|
|
FIXME: provide a complete autoconf test for buggy enum bitfields. */
|
|
|
|
|
2011-10-22 03:35:29 +02:00
|
|
|
#ifdef __cplusplus
|
|
|
|
#define ENUM_BITFIELD(TYPE) enum TYPE
|
|
|
|
#elif (GCC_VERSION > 2000)
|
2011-04-25 20:05:37 +02:00
|
|
|
#define ENUM_BITFIELD(TYPE) __extension__ enum TYPE
|
|
|
|
#else
|
|
|
|
#define ENUM_BITFIELD(TYPE) unsigned int
|
2015-08-12 00:39:31 +02:00
|
|
|
#endif
|
|
|
|
|
2017-05-18 16:22:01 +02:00
|
|
|
#if __cpp_constexpr >= 200704
|
|
|
|
#define CONSTEXPR constexpr
|
|
|
|
#else
|
|
|
|
#define CONSTEXPR
|
|
|
|
#endif
|
|
|
|
|
2016-10-14 17:24:58 +02:00
|
|
|
/* C++11 adds the ability to add "override" after an implementation of a
|
|
|
|
virtual function in a subclass, to:
|
|
|
|
(A) document that this is an override of a virtual function
|
|
|
|
(B) allow the compiler to issue a warning if it isn't (e.g. a mismatch
|
|
|
|
of the type signature).
|
|
|
|
|
|
|
|
Similarly, it allows us to add a "final" to indicate that no subclass
|
|
|
|
may subsequently override the vfunc.
|
|
|
|
|
|
|
|
Provide OVERRIDE and FINAL as macros, allowing us to get these benefits
|
|
|
|
when compiling with C++11 support, but without requiring C++11.
|
|
|
|
|
|
|
|
For gcc, use "-std=c++11" to enable C++11 support; gcc 6 onwards enables
|
|
|
|
this by default (actually GNU++14). */
|
|
|
|
|
2017-09-15 16:53:48 +02:00
|
|
|
#if defined __cplusplus
|
|
|
|
# if __cplusplus >= 201103
|
|
|
|
/* C++11 claims to be available: use it. Final/override were only
|
|
|
|
implemented in 4.7, though. */
|
|
|
|
# if GCC_VERSION < 4007
|
|
|
|
# define OVERRIDE
|
|
|
|
# define FINAL
|
|
|
|
# else
|
|
|
|
# define OVERRIDE override
|
|
|
|
# define FINAL final
|
|
|
|
# endif
|
|
|
|
# elif GCC_VERSION >= 4007
|
|
|
|
/* G++ 4.7 supports __final in C++98. */
|
2016-10-14 17:25:35 +02:00
|
|
|
# define OVERRIDE
|
2017-09-15 16:53:48 +02:00
|
|
|
# define FINAL __final
|
2016-10-14 17:25:35 +02:00
|
|
|
# else
|
2017-09-15 16:53:48 +02:00
|
|
|
/* No C++11 support; leave the macros empty. */
|
|
|
|
# define OVERRIDE
|
|
|
|
# define FINAL
|
2016-10-14 17:25:35 +02:00
|
|
|
# endif
|
2015-08-12 00:39:31 +02:00
|
|
|
#else
|
2017-09-15 16:53:48 +02:00
|
|
|
/* No C++11 support; leave the macros empty. */
|
2016-10-14 17:25:35 +02:00
|
|
|
# define OVERRIDE
|
|
|
|
# define FINAL
|
2011-04-25 20:05:37 +02:00
|
|
|
#endif
|
|
|
|
|
2017-09-15 17:40:50 +02:00
|
|
|
/* 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 __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 */
|
|
|
|
|
2009-06-01 07:47:20 +02:00
|
|
|
#ifdef __cplusplus
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
1997-08-22 00:57:35 +02:00
|
|
|
#endif /* ansidecl.h */
|