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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-8794] libstdc++: Disable volatile-qualified std::bind for C++20 Date: Thu, 29 Sep 2022 14:17:33 +0000 (GMT) [thread overview] Message-ID: <20220929141733.E6C6A3858D39@sourceware.org> (raw) https://gcc.gnu.org/g:85adc2ec2b0736d07c0df35ad9a450f97ff59a7c commit r12-8794-g85adc2ec2b0736d07c0df35ad9a450f97ff59a7c Author: Jonathan Wakely <jwakely@redhat.com> Date: Wed Sep 28 12:39:41 2022 +0100 libstdc++: Disable volatile-qualified std::bind for C++20 LWG 2487 added a precondition to std::bind for C++17, making volatile-qualified uses undefined. We still support it, but with a deprecated warning. P1065R2 made it explicitly ill-formed for C++20, so we should no longer accept it as deprecated. This implements that change. libstdc++-v3/ChangeLog: * doc/xml/manual/evolution.xml: Document std::bind API changes. * doc/xml/manual/intro.xml: Document LWG 2487 status. * doc/xml/manual/using.xml: Clarify default value of _GLIBCXX_USE_DEPRECATED. * doc/html/*: Regenerate. * include/std/functional (_Bind::operator()(Args&&...) volatile) (_Bind::operator()(Args&&...) const volatile) (_Bind_result::operator()(Args&&...) volatile) (_Bind_result::operator()(Args&&...) const volatile): Replace with deleted overload for C++20 and later. * testsuite/20_util/bind/cv_quals.cc: Check for deprecated warnings in C++17. * testsuite/20_util/bind/cv_quals_2.cc: Likewise, and check for ill-formed in C++20. (cherry picked from commit d01f112de4a54db6d2abef836e6dff3a08167389) Diff: --- libstdc++-v3/doc/html/index.html | 2 +- libstdc++-v3/doc/html/manual/api.html | 5 ++++ libstdc++-v3/doc/html/manual/appendix.html | 2 +- libstdc++-v3/doc/html/manual/appendix_porting.html | 2 +- libstdc++-v3/doc/html/manual/bugs.html | 6 ++++ libstdc++-v3/doc/html/manual/index.html | 2 +- libstdc++-v3/doc/html/manual/using_macros.html | 5 ++-- libstdc++-v3/doc/xml/manual/evolution.xml | 13 +++++++++ libstdc++-v3/doc/xml/manual/intro.xml | 9 ++++++ libstdc++-v3/doc/xml/manual/using.xml | 5 ++-- libstdc++-v3/include/std/functional | 32 ++++++++++++++++------ libstdc++-v3/testsuite/20_util/bind/cv_quals.cc | 25 +++++++++-------- libstdc++-v3/testsuite/20_util/bind/cv_quals_2.cc | 12 ++++---- 13 files changed, 87 insertions(+), 33 deletions(-) diff --git a/libstdc++-v3/doc/html/index.html b/libstdc++-v3/doc/html/index.html index 5cc9226f4a1..1e0cecbcc4f 100644 --- a/libstdc++-v3/doc/html/index.html +++ 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@@ now defaults to zero. <code class="classname">has_trivial_default_constructor</code>, <code class="classname">has_trivial_copy_constructor</code> and <code class="classname">has_trivial_copy_assign</code> removed. +</p><p> +Calling a <code class="code">std::bind</code> result as volatile was deprecated for C++17. </p><p> Profile Mode was deprecated. </p><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="api.rel_72"></a><code class="constant">7.2</code></h4></div></div></div><p> Library Fundamentals TS header <code class="filename"><experimental/source_location></code> @@ -468,4 +470,7 @@ they both derive from <code class="classname">std::__new_allocator</code> instea <code class="code">noexcept(false)</code> to allow thread cancellation exceptions to be thrown from <code class="function">pthread_cond_wait</code> without aborting the process. +</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_123"></a><code 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href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>. </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.streamattach"> No <code class="code">stream::attach(int fd)</code> </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.support_cxx98"> diff --git a/libstdc++-v3/doc/html/manual/appendix_porting.html b/libstdc++-v3/doc/html/manual/appendix_porting.html index 3d7fb564f4b..55d3f2318dd 100644 --- a/libstdc++-v3/doc/html/manual/appendix_porting.html +++ b/libstdc++-v3/doc/html/manual/appendix_porting.html @@ -14,7 +14,7 @@ Existing tests </a></span></dt><dt><span class="section"><a href="test.html#test.exception.safety.containers"> C++11 Requirements Test Sequence Descriptions -</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>. +</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>. </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.streamattach"> No <code class="code">stream::attach(int fd)</code> </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.support_cxx98"> diff --git a/libstdc++-v3/doc/html/manual/bugs.html b/libstdc++-v3/doc/html/manual/bugs.html index 38594a9b75a..ef00beec1a8 100644 --- a/libstdc++-v3/doc/html/manual/bugs.html +++ b/libstdc++-v3/doc/html/manual/bugs.html @@ -521,6 +521,12 @@ </em></span> </span></dt><dd><p>Avoid using <code class="code">dynamic_cast</code> when it would be ill-formed. + </p></dd><dt><a id="manual.bugs.dr2487"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2487" target="_top">2487</a>: + <span class="emphasis"><em><code class="code">bind()</code> should be <code class="code">const</code>-overloaded + not cv-overloaded + </em></span> + </span></dt><dd><p>Deprecate volatile-qualified <code class="code">operator()</code> + for C++17, make it ill-formed for C++20. </p></dd><dt><a id="manual.bugs.dr2499"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2499" target="_top">2499</a>: <span class="emphasis"><em><code class="code">operator>>(basic_istream&, CharT*)</code> makes it hard to avoid buffer overflows </em></span> diff --git a/libstdc++-v3/doc/html/manual/index.html b/libstdc++-v3/doc/html/manual/index.html index 7122ddeaabd..2949509bca3 100644 --- a/libstdc++-v3/doc/html/manual/index.html +++ b/libstdc++-v3/doc/html/manual/index.html @@ -123,7 +123,7 @@ Existing tests </a></span></dt><dt><span class="section"><a href="test.html#test.exception.safety.containers"> C++11 Requirements Test Sequence Descriptions -</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved 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href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a 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a/libstdc++-v3/doc/html/manual/using_macros.html +++ b/libstdc++-v3/doc/html/manual/using_macros.html @@ -43,7 +43,7 @@ <a class="link" href="configure.html" title="Configure">Configure</a>), with the various --enable/--disable choices being translated to #define/#undef). - </p><p> <acronym class="acronym">ABI</acronym> means that changing from the default value may + </p><p> <acronym class="acronym">ABI</acronym>-changing means that changing from the default value may mean changing the <acronym class="acronym">ABI</acronym> of compiled code. In other words, these choices control code which has already been compiled (i.e., in a binary such as libstdc++.a/.so). If you explicitly #define or @@ -53,7 +53,8 @@ consistent linkage requires changing the config headers before building/installing the library. </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="code">_GLIBCXX_USE_DEPRECATED</code></span></dt><dd><p> - Defined by default. Not configurable. ABI-changing. Turning this off + Defined to the value <code class="literal">1</code> by default. + Not configurable. ABI-changing. Turning this off removes older ARM-style iostreams code, and other anachronisms from the API. This macro is dependent on the version of the standard being tracked, and as a result may give different results for diff --git a/libstdc++-v3/doc/xml/manual/evolution.xml b/libstdc++-v3/doc/xml/manual/evolution.xml index 4923e8c4783..82936189179 100644 --- a/libstdc++-v3/doc/xml/manual/evolution.xml +++ b/libstdc++-v3/doc/xml/manual/evolution.xml @@ -817,6 +817,10 @@ now defaults to zero. <classname>has_trivial_copy_assign</classname> removed. </para> +<para> +Calling a <code>std::bind</code> result as volatile was deprecated for C++17. +</para> + <para> Profile Mode was deprecated. </para> <section xml:id="api.rel_72"><info><title><constant>7.2</constant></title></info> @@ -1067,4 +1071,13 @@ the process. </section> + +<section xml:id="api.rel_123"><info><title><constant>12.3</constant></title></info> +<para> +Calling a <code>std::bind</code> result as volatile is ill-formed for C++20 +and later. +</para> + +</section> + </section> diff --git a/libstdc++-v3/doc/xml/manual/intro.xml b/libstdc++-v3/doc/xml/manual/intro.xml index 290e5d3a74e..7b8abd98b0d 100644 --- a/libstdc++-v3/doc/xml/manual/intro.xml +++ b/libstdc++-v3/doc/xml/manual/intro.xml @@ -1157,6 +1157,15 @@ requirements of the license of GCC. ill-formed. </para></listitem></varlistentry> + <varlistentry xml:id="manual.bugs.dr2487"><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2487">2487</link>: + <emphasis><code>bind()</code> should be <code>const</code>-overloaded + not cv-overloaded + </emphasis> + </term> + <listitem><para>Deprecate volatile-qualified <code>operator()</code> + for C++17, make it ill-formed for C++20. + </para></listitem></varlistentry> + <varlistentry xml:id="manual.bugs.dr2499"><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2499">2499</link>: <emphasis><code>operator>>(basic_istream&, CharT*)</code> makes it hard to avoid buffer overflows </emphasis> diff --git a/libstdc++-v3/doc/xml/manual/using.xml b/libstdc++-v3/doc/xml/manual/using.xml index 0b9a0c98518..a8a549eebcd 100644 --- a/libstdc++-v3/doc/xml/manual/using.xml +++ b/libstdc++-v3/doc/xml/manual/using.xml @@ -1062,7 +1062,7 @@ g++ -Winvalid-pch -I. -include stdc++.h -H -g -O2 hello.cc -o test.exe #define/#undef). </para> - <para> <acronym>ABI</acronym> means that changing from the default value may + <para> <acronym>ABI</acronym>-changing means that changing from the default value may mean changing the <acronym>ABI</acronym> of compiled code. In other words, these choices control code which has already been compiled (i.e., in a binary such as libstdc++.a/.so). If you explicitly #define or @@ -1077,7 +1077,8 @@ g++ -Winvalid-pch -I. -include stdc++.h -H -g -O2 hello.cc -o test.exe <varlistentry><term><code>_GLIBCXX_USE_DEPRECATED</code></term> <listitem> <para> - Defined by default. Not configurable. ABI-changing. Turning this off + Defined to the value <literal>1</literal> by default. + Not configurable. ABI-changing. Turning this off removes older ARM-style iostreams code, and other anachronisms from the API. This macro is dependent on the version of the standard being tracked, and as a result may give different results for diff --git a/libstdc++-v3/include/std/functional b/libstdc++-v3/include/std/functional index 685a3e167ee..0ed0578a24b 100644 --- a/libstdc++-v3/include/std/functional +++ b/libstdc++-v3/include/std/functional @@ -461,6 +461,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION /// @endcond +#if __cplusplus == 201703L && _GLIBCXX_USE_DEPRECATED +# define _GLIBCXX_VOLATILE_BIND +// _GLIBCXX_RESOLVE_LIB_DEFECTS +// 2487. bind() should be const-overloaded, not cv-overloaded +# define _GLIBCXX_DEPR_BIND \ + [[deprecated("std::bind does not support volatile in C++17")]] +#elif __cplusplus < 201703L +# define _GLIBCXX_VOLATILE_BIND +# define _GLIBCXX_DEPR_BIND +#endif + /// Type of the function object returned from bind(). template<typename _Signature> class _Bind; @@ -497,6 +508,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION ); } +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template<typename _Result, typename... _Args, std::size_t... _Indexes> _Result @@ -518,6 +530,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)... ); } +#endif // volatile template<typename _BoundArg, typename _CallArgs> using _Mu_type = decltype( @@ -581,12 +594,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _Bound_indexes()); } -#if __cplusplus > 201402L -# define _GLIBCXX_DEPR_BIND \ - [[deprecated("std::bind does not support volatile in C++17")]] -#else -# define _GLIBCXX_DEPR_BIND -#endif +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template<typename... _Args, typename _Result = _Res_type_cv<tuple<_Args...>, add_volatile>> @@ -610,6 +618,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION std::forward_as_tuple(std::forward<_Args>(__args)...), _Bound_indexes()); } +#endif // volatile }; /// Type of the function object returned from bind<R>(). @@ -645,9 +654,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION (std::get<_Indexes>(_M_bound_args), __args)...); } +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template<typename _Res, typename... _Args, std::size_t... _Indexes> - _GLIBCXX20_CONSTEXPR _Res __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile { @@ -657,7 +666,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Call as const volatile template<typename _Res, typename... _Args, std::size_t... _Indexes> - _GLIBCXX20_CONSTEXPR _Res __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const volatile @@ -665,6 +673,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION return std::__invoke_r<_Res>(_M_f, _Mu<_Bound_args>() (__volget<_Indexes>(_M_bound_args), __args)...); } +#endif // volatile public: typedef _Result result_type; @@ -706,6 +715,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _Bound_indexes()); } +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template<typename... _Args> _GLIBCXX_DEPR_BIND @@ -727,7 +737,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION std::forward_as_tuple(std::forward<_Args>(__args)...), _Bound_indexes()); } +#else + template<typename... _Args> + void operator()(_Args&&...) const volatile = delete; +#endif // volatile }; + +#undef _GLIBCXX_VOLATILE_BIND #undef _GLIBCXX_DEPR_BIND /** diff --git a/libstdc++-v3/testsuite/20_util/bind/cv_quals.cc b/libstdc++-v3/testsuite/20_util/bind/cv_quals.cc index 83312397a93..79e3e2fbdb4 100644 --- a/libstdc++-v3/testsuite/20_util/bind/cv_quals.cc +++ b/libstdc++-v3/testsuite/20_util/bind/cv_quals.cc @@ -17,6 +17,7 @@ // 20.7.11 Function template bind +// { dg-options "-Wdeprecated-declarations" } // { dg-do run { target c++11 } } #include <functional> @@ -48,12 +49,12 @@ void test01() const auto b1 = std::bind(X()); VERIFY( b1() == 1 ); -#if __cplusplus <= 201402L +#if __cplusplus <= 201703L volatile auto b2 = std::bind(X()); - VERIFY( b2() == 2 ); + VERIFY( b2() == 2 ); // { dg-warning "deprecated" "" { target c++17_only } } const volatile auto b3 = std::bind(X()); - VERIFY( b3() == 3 ); + VERIFY( b3() == 3 ); // { dg-warning "deprecated" "" { target c++17_only } } #endif } @@ -65,12 +66,12 @@ void test02() const auto b1 = std::bind<int>(X()); VERIFY( b1() == 1 ); -#if __cplusplus <= 201402L +#if __cplusplus <= 201703L volatile auto b2 = std::bind<int>(X()); - VERIFY( b2() == 2 ); + VERIFY( b2() == 2 ); // { dg-warning "deprecated" "" { target c++17_only } } const volatile auto b3 = std::bind<int>(X()); - VERIFY( b3() == 3 ); + VERIFY( b3() == 3 ); // { dg-warning "deprecated" "" { target c++17_only } } #endif } @@ -82,12 +83,12 @@ void test03() const auto b1 = std::bind(X(), _1, 0, _2); VERIFY( b1(0, 0) == 1 ); -#if __cplusplus <= 201402L +#if __cplusplus <= 201703L volatile auto b2 = std::bind(X(), _1, _2, 0); - VERIFY( b2(0, 0) == 2 ); + VERIFY( b2(0, 0) == 2 ); // { dg-warning "deprecated" "" { target c++17_only } } const volatile auto b3 = std::bind(X(), _1, 0, _2); - VERIFY( b3(0, 0) == 3 ); + VERIFY( b3(0, 0) == 3 ); // { dg-warning "deprecated" "" { target c++17_only } } #endif } @@ -99,12 +100,12 @@ void test04() const auto b1 = std::bind<int>(X(), _1, 0, _2); VERIFY( b1(0, 0) == 1 ); -#if __cplusplus <= 201402L +#if __cplusplus <= 201703L volatile auto b2 = std::bind<int>(X(), _1, _2, 0); - VERIFY( b2(0, 0) == 2 ); + VERIFY( b2(0, 0) == 2 ); // { dg-warning "deprecated" "" { target c++17_only } } const volatile auto b3 = std::bind<int>(X(), _1, 0, _2); - VERIFY( b3(0, 0) == 3 ); + VERIFY( b3(0, 0) == 3 ); // { dg-warning "deprecated" "" { target c++17_only } } #endif } diff --git a/libstdc++-v3/testsuite/20_util/bind/cv_quals_2.cc b/libstdc++-v3/testsuite/20_util/bind/cv_quals_2.cc index 7a85568c66a..d2ebad72fdf 100644 --- a/libstdc++-v3/testsuite/20_util/bind/cv_quals_2.cc +++ b/libstdc++-v3/testsuite/20_util/bind/cv_quals_2.cc @@ -15,7 +15,9 @@ // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. -// { dg-do run { target c++11 } } +// { dg-options "-Wdeprecated-declarations" } +// { dg-do run { target { c++11 && c++17_down } } } +// { dg-do compile { target c++20 } } #include <functional> #include <testsuite_hooks.h> @@ -33,13 +35,13 @@ void test01() const auto b0 = std::bind(X()); VERIFY( b0() == 0 ); -#if __cplusplus <= 201402L volatile auto b1 = std::bind(X()); - VERIFY( b1() == 1 ); + VERIFY( b1() == 1 ); // { dg-warning "deprecated" "" { target c++17_only } } + // { dg-error "no match" "" { target c++20 } 39 } const volatile auto b2 = std::bind(X()); - VERIFY( b2() == 2 ); -#endif + VERIFY( b2() == 2 ); // { dg-warning "deprecated" "" { target c++17_only } } + // { dg-error "no match" "" { target c++20 } 43 } } int main()
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