#ifndef RBIMPL_ATTR_CONST_H                          /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_ATTR_CONST_H
/**
 * @file
 * @author     Ruby developers <ruby-core@ruby-lang.org>
 * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
 *             Permission  is hereby  granted,  to  either redistribute  and/or
 *             modify this file, provided that  the conditions mentioned in the
 *             file COPYING are met.  Consult the file for details.
 * @warning    Symbols   prefixed  with   either  `RBIMPL`   or  `rbimpl`   are
 *             implementation details.   Don't take  them as canon.  They could
 *             rapidly appear then vanish.  The name (path) of this header file
 *             is also an  implementation detail.  Do not expect  it to persist
 *             at the place it is now.  Developers are free to move it anywhere
 *             anytime at will.
 * @note       To  ruby-core:  remember  that   this  header  can  be  possibly
 *             recursively included  from extension  libraries written  in C++.
 *             Do not  expect for  instance `__VA_ARGS__` is  always available.
 *             We assume C99  for ruby itself but we don't  assume languages of
 *             extension libraries.  They could be written in C++98.
 * @brief      Defines #RBIMPL_ATTR_CONST.
 */
#include "ruby/internal/compiler_since.h"
#include "ruby/internal/has/attribute.h"
#include "ruby/internal/has/declspec_attribute.h"

/** Wraps (or simulates) `__attribute__((const))` */
#if RBIMPL_HAS_ATTRIBUTE(const)
# define RBIMPL_ATTR_CONST() __attribute__((__const__))
#elif RBIMPL_HAS_DECLSPEC_ATTRIBUTE(noalias)
# /* If a function can be a const, that is also a noalias. */
# define RBIMPL_ATTR_CONST() __declspec(noalias)
#elif RBIMPL_COMPILER_SINCE(SunPro, 5, 10, 0)
# define RBIMPL_ATTR_CONST() _Pragma("no_side_effect")
#else
# define RBIMPL_ATTR_CONST() /* void */
#endif

/** Enables #RBIMPL_ATTR_CONST if and only if. ! #RUBY_DEBUG. */
#if !defined(RUBY_DEBUG) || !RUBY_DEBUG
# define RBIMPL_ATTR_CONST_UNLESS_DEBUG() RBIMPL_ATTR_CONST()
#else
# define RBIMPL_ATTR_CONST_UNLESS_DEBUG() /* void */
#endif

#endif /* RBIMPL_ATTR_CONST_H */
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<div class='path'>path: <a href='/ruby.git/log/?id=e19cf850df3935320294e3438f39ee7848a50d12'>root</a>/<a href='/ruby.git/log/test?id=e19cf850df3935320294e3438f39ee7848a50d12'>test</a>/<a href='/ruby.git/log/test/pathname?id=e19cf850df3935320294e3438f39ee7848a50d12'>pathname</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/ruby.git/log/test/pathname?id=e19cf850df3935320294e3438f39ee7848a50d12&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2014-11-13 16:05:37 +0000'>2014-11-13</span></td><td><a href='/ruby.git/commit/test/pathname?id=fb2008a73a46066481b77f53c62de8630a153efe'>* test/lib/envutil.rb: Moved from test/ruby/.</a></td><td>akr</td></tr>
<tr><td><span title='2014-09-15 01:29:21 +0000'>2014-09-15</span></td><td><a href='/ruby.git/commit/test/pathname?id=8ae989f6b6e92ac68257fa2d078a38c5561b0ee2'>pathname.rb: fix a Pathname#relative_path_from crash on</a></td><td>nobu</td></tr>
<tr><td><span title='2014-09-04 11:22:20 +0000'>2014-09-04</span></td><td><a href='/ruby.git/commit/test/pathname?id=d80282eecce4d2b6a7c3f419659d6e4d8eecb536'>* test/pathname/test_pathname.rb: added testcase for Pathname#mountpoint.</a></td><td>hsbt</td></tr>
<tr><td><span title='2014-06-28 13:46:02 +0000'>2014-06-28</span></td><td><a href='/ruby.git/commit/test/pathname?id=b9faaf6a553eb20d0b3c76c8189ead7a1fb2ab3a'>* ext/pathname/pathname.c (path_birthtime): New method,</a></td><td>akr</td></tr>
<tr><td><span title='2014-05-05 13:09:58 +0000'>2014-05-05</span></td><td><a href='/ruby.git/commit/test/pathname?id=edacb3a94ac275a62451f49bb2f70e9c1fc6619b'>* ext/pathname/lib/pathname.rb (cleanpath_aggressive): make all</a></td><td>akr</td></tr>
<tr><td><span title='2014-05-05 12:49:27 +0000'>2014-05-05</span></td><td><a href='/ruby.git/commit/test/pathname?id=391fc2eeecfc2f0d0f851b0c27ba02e041fe2cd9'>* ext/pathname/lib/pathname.rb (Pathname#/): Aliased to Pathname#+.</a></td><td>akr</td></tr>
<tr><td><span title='2014-04-02 02:51:20 +0000'>2014-04-02</span></td><td><a href='/ruby.git/commit/test/pathname?id=60d4fc9f68c16099a9d9574ebea599b084a4a237'>Fix error with empty args.</a></td><td>kazu</td></tr>
<tr><td><span title='2014-03-25 14:42:36 +0000'>2014-03-25</span></td><td><a href='/ruby.git/commit/test/pathname?id=6df5f314ac7809e2aedc22a961cf31c4e3f21d42'>remove unnecessary unshift</a></td><td>kazu</td></tr>
<tr><td><span title='2014-03-04 15:44:53 +0000'>2014-03-04</span></td><td><a href='/ruby.git/commit/test/pathname?id=df0991f34b95e4f6a283c40613aac0334accce1e'>* ext/pathname/lib/pathname.rb (Pathname#find): add "ignore_error"</a></td><td>ktsj</td></tr>
<tr><td><span title='2014-02-16 06:05:55 +0000'>2014-02-16</span></td><td><a href='/ruby.git/commit/test/pathname?id=2e1d21f53c2f45f1773c8bb246e0de086f803170'>* test/pathname/test_pathname.rb: use File.exist? instead of File.exists?</a></td><td>hsbt</td></tr>
<tr><td><span title='2013-04-04 11:12:12 +0000'>2013-04-04</span></td><td><a href='/ruby.git/commit/test/pathname?id=c3d1fde2b528413f5be2f936a9d7ea899a777fc7'>* ext/pathname/pathname.c (path_write): New method.</a></td><td>akr</td></tr>
<tr><td><span title='2012-02-09 14:44:10 +0000'>2012-02-09</span></td><td><a href='/ruby.git/commit/test/pathname?id=42144fc3bb3ec87c8b7a619d0957aa907eea56b6'>* test/pathname/test_pathname.rb (test_binread): add assertion to</a></td><td>nagachika</td></tr>
<tr><td><span title='2012-02-08 19:13:14 +0000'>2012-02-08</span></td><td><a href='/ruby.git/commit/test/pathname?id=7bde0843a2ce0680d1cefb8f4acea6ea56491008'>* test/pathname/test_pathname.rb: not read but binread.</a></td><td>naruse</td></tr>
<tr><td><span title='2012-01-25 02:32:06 +0000'>2012-01-25</span></td><td><a href='/ruby.git/commit/test/pathname?id=ed469831e44f2b5a9384b18e660677b20a5ab664'>* file.c (rb_enc_path_next, rb_enc_path_skip_prefix)</a></td><td>nobu</td></tr>
<tr><td><span title='2011-11-19 12:52:37 +0000'>2011-11-19</span></td><td><a href='/ruby.git/commit/test/pathname?id=54f282c2c4102e6b2d3c641054b3c08808788224'>* lib/pathname.rb (Pathname#find): return an enumerator if</a></td><td>akr</td></tr>
<tr><td><span title='2011-06-15 03:36:57 +0000'>2011-06-15</span></td><td><a href='/ruby.git/commit/test/pathname?id=19853fc49b20626052d6cc92dbd7b08ecce03039'>* test/ruby/test_io.rb (test_copy_stream_socket): wait a child process</a></td><td>akr</td></tr>
<tr><td><span title='2011-02-12 14:17:54 +0000'>2011-02-12</span></td><td><a href='/ruby.git/commit/test/pathname?id=7f46fadd9d7f8ee32d9837a67e212f55e23666b8'>* lib/test/unit.rb (assert_include): add alias.</a></td><td>nobu</td></tr>
<tr><td><span title='2010-10-29 21:40:09 +0000'>2010-10-29</span></td><td><a href='/ruby.git/commit/test/pathname?id=fea0365dea00cf7a120c07b76f9cc47c2d66e105'>* test/pathname/test_pathname.rb (TestPathname#test_grpowned?): the</a></td><td>akr</td></tr>
<tr><td><span title='2010-09-20 17:44:31 +0000'>2010-09-20</span></td><td><a href='/ruby.git/commit/test/pathname?id=27727621c468ec9d07ba84f8066d1f3eb25589e3'>* test/pathname/test_pathname.rb (TestPathname#test_mkdir): fix typo.</a></td><td>kazu</td></tr>
<tr><td><span title='2010-09-15 12:07:43 +0000'>2010-09-15</span></td><td><a href='/ruby.git/commit/test/pathname?id=363ed27fa7a9f95111e2dfa0df8ae120cfc95d8d'>* ext/pathname/pathname.c (path_mkdir): Pathname#mkdir translated</a></td><td>akr</td></tr>
<tr><td><span title='2010-09-14 11:18:37 +0000'>2010-09-14</span></td><td><a href='/ruby.git/commit/test/pathname?id=bf77099923011a3a0fa0186a8f2dcfb52bdb71bf'>* ext/pathname/pathname.c (path_s_getwd): Pathname.getwd and</a></td><td>akr</td></tr>
<tr><td><span title='2010-09-13 20:14:04 +0000'>2010-09-13</span></td><td><a href='/ruby.git/commit/test/pathname?id=6d9b5fdffcfe2fc2783c5b03f93e2deb372fd260'>* ext/pathname/pathname.c (path_s_glob): Pathname.glob translated</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-29 00:50:58 +0000'>2010-08-29</span></td><td><a href='/ruby.git/commit/test/pathname?id=909d638aecb3597536e912599f5ee355aac828c0'>* test/pathname/test_pathname.rb (test_expand_path): should treat drive letter.</a></td><td>usa</td></tr>
<tr><td><span title='2010-08-23 14:16:06 +0000'>2010-08-23</span></td><td><a href='/ruby.git/commit/test/pathname?id=526d246f715a1a0046942f942173c2d9447e78a5'>* ext/pathname/pathname.c (path_each_line): Pathname#each_line</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-20 01:40:51 +0000'>2010-08-20</span></td><td><a href='/ruby.git/commit/test/pathname?id=19fb560d219f583066241293f2e0f92cd898595e'>* ext/pathname/pathname.c (path_expand_path): Pathname#expand_path</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-16 12:40:10 +0000'>2010-08-16</span></td><td><a href='/ruby.git/commit/test/pathname?id=16cd13c05188bf52c5dfb056f02ebf4574bb1bc3'>* ext/pathname/pathname.c (path_basename): Pathname#basename translated</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-09 13:15:49 +0000'>2010-08-09</span></td><td><a href='/ruby.git/commit/test/pathname?id=ec5bb26fa031288fd8f935443805f68e5637ee75'>* ext/pathname/pathname.c (path_open): Pathname#open</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-08 11:41:15 +0000'>2010-08-08</span></td><td><a href='/ruby.git/commit/test/pathname?id=c60cd341e86e2739a59d71b700e83d614918f22a'>fix a test name.</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-07 22:33:51 +0000'>2010-08-07</span></td><td><a href='/ruby.git/commit/test/pathname?id=b50fb9034e8efd45319ce6ac3c7984bf98b548de'>* ext/pathname/pathname.c (path_fnmatch): Pathname#fnmatch and</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-07 09:21:37 +0000'>2010-08-07</span></td><td><a href='/ruby.git/commit/test/pathname?id=49cb5a78a14584de5932637d16fbd4ee0733d9d3'>* ext/pathname/pathname.c (path_lchown): Pathname#lchown translated</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-07 04:59:27 +0000'>2010-08-07</span></td><td><a href='/ruby.git/commit/test/pathname?id=a438fce7e349c38fc9d0136da79806c2adf357ba'>* ext/pathname/pathname.c (path_sub_ext): don't clobber shared string.</a></td><td>nobu</td></tr>
<tr><td><span title='2010-08-07 00:29:52 +0000'>2010-08-07</span></td><td><a href='/ruby.git/commit/test/pathname?id=6bc65b35bdf8611837a81dd381eb8c7b61442fc6'>* test/ruby/envutil.rb (assert_normal_exit): use assert.  fix</a></td><td>akr</td></tr>
<tr><td><span title='2010-08-03 14:35:34 +0000'>2010-08-03</span></td><td><a href='/ruby.git/commit/test/pathname?id=5e9c47c81d986219b1d6c64e4e490179527cd916'>add tests.</a></td><td>akr</td></tr>
<tr><td><span title='2010-07-28 13:24:42 +0000'>2010-07-28</span></td><td><a href='/ruby.git/commit/test/pathname?id=4b8f2ed7cc0fb9623ba7582c4576fa37e3620737'>add a test.</a></td><td>akr</td></tr>
<tr><td><span title='2010-03-07 04:55:34 +0000'>2010-03-07</span></td><td><a href='/ruby.git/commit/test/pathname?id=785b31bed4fbe10dd8fe92a7ef52782d2d1d1123'>* file.c: add optional basedir argument for realpath/realdirpath.</a></td><td>akr</td></tr>
<tr><td><span title='2009-03-17 05:26:15 +0000'>2009-03-17</span></td><td><a href='/ruby.git/commit/test/pathname?id=a28532dcf3e237b8d75c724cd65eb04ca57e6da1'>* lib/pathname.rb (Pathname#sub): set $~ in block.binding.</a></td><td>akr</td></tr>
<tr><td><span title='2009-01-30 12:50:55 +0000'>2009-01-30</span></td><td><a href='/ruby.git/commit/test/pathname?id=e94e674d0e8a8ab7641717c2d2ba4b5aac5c7295'>* lib/pathname.rb (Pathname#realdirpath): new method.</a></td><td>akr</td></tr>
<tr><td><span title='2009-01-29 18:02:25 +0000'>2009-01-29</span></td><td><a href='/ruby.git/commit/test/pathname?id=e0469eea596b2454fb335520c3717a9e374d495d'>add tests.</a></td><td>akr</td></tr>
<tr><td><span title='2008-10-02 02:40:33 +0000'>2008-10-02</span></td><td><a href='/ruby.git/commit/test/pathname?id=c6866f855206d2daa55324c3576ffaa7c4e95f85'>Back out the previous change after miniunit import.</a></td><td>knu</td></tr>
<tr><td><span title='2008-09-26 09:57:33 +0000'>2008-09-26</span></td><td><a href='/ruby.git/commit/test/pathname?id=571b2e17b2775e40b3fe309d29dda611524625cf'>* test/pathname/test_pathname.rb: Fix use of deprecated methods.</a></td><td>knu</td></tr>
<tr><td><span title='2008-09-23 00:03:42 +0000'>2008-09-23</span></td><td><a href='/ruby.git/commit/test/pathname?id=f398d750ea3450762c0ba10c5dea4522d4676360'>* lib/pathname.rb (each_filename): return Enumerator if no block</a></td><td>mame</td></tr>
<tr><td><span title='2008-02-13 13:50:31 +0000'>2008-02-13</span></td><td><a href='/ruby.git/commit/test/pathname?id=70f25096c0c389888c06e0fea358c92153633b8e'>* lib/pathname.rb (Pathname#sub_ext): new method.  [ruby-list:44608]</a></td><td>akr</td></tr>