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 +++ b/libstdc++-v3/doc/html/index.html @@ -142,7 +142,7 @@ Existing tests
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diff --git a/libstdc++-v3/doc/html/manual/api.html b/libstdc++-v3/doc/html/manual/api.html index bbda6f5acf3..604380e0136 100644 --- a/libstdc++-v3/doc/html/manual/api.html +++ b/libstdc++-v3/doc/html/manual/api.html @@ -316,6 +316,8 @@ now defaults to zero. has_trivial_default_constructor, has_trivial_copy_constructor and has_trivial_copy_assign removed. +

+Calling a std::bind result as volatile was deprecated for C++17.

Profile Mode was deprecated.

7.2

Library Fundamentals TS header <experimental/source_location> @@ -468,4 +470,7 @@ they both derive from std::__new_allocator instea noexcept(false) to allow thread cancellation exceptions to be thrown from pthread_cond_wait without aborting the process. +

12.3

+Calling a std::bind result as volatile is ill-formed for C++20 +and later.

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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
C++11 Requirements Test Sequence Descriptions -
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diff --git a/libstdc++-v3/doc/html/manual/bugs.html b/libstdc++-v3/doc/html/manual/bugs.html index 384fe8d2c4e..8e0bc1f9801 100644 --- a/libstdc++-v3/doc/html/manual/bugs.html +++ b/libstdc++-v3/doc/html/manual/bugs.html @@ -524,6 +524,12 @@

Avoid using dynamic_cast when it would be ill-formed. +

2487: + bind() should be const-overloaded + not cv-overloaded + +

Deprecate volatile-qualified operator() + for C++17, make it ill-formed for C++20.

2499: operator>>(basic_istream&, CharT*) makes it hard to avoid buffer overflows 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
C++11 Requirements Test Sequence Descriptions -
ABI Policy and Guidelines
The C++ Interface
Versioning
Goals
History
Prerequisites
Configuring
Checking Active
Allowed Changes
Prohibited Changes
Implementation
Testing
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API Evolution and Deprecation History
3.0
3.1
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Backwards Compatibility
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Pre-ISO headers removed
Extension headers hash_map, hash_set moved to ext or backwards
No ios::nocreate/ios::noreplace. +
ABI Policy and Guidelines
The C++ Interface
Versioning
Goals
History
Prerequisites
Configuring
Checking Active
Allowed Changes
Prohibited Changes
Implementation
Testing
Single ABI Testing
Multiple ABI Testing
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API Evolution and Deprecation History
3.0
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No stream::attach(int fd)
diff --git a/libstdc++-v3/doc/html/manual/using_macros.html b/libstdc++-v3/doc/html/manual/using_macros.html index 98230465bed..62c66b7de4c 100644 --- a/libstdc++-v3/doc/html/manual/using_macros.html +++ b/libstdc++-v3/doc/html/manual/using_macros.html @@ -43,7 +43,7 @@ Configure), with the various --enable/--disable choices being translated to #define/#undef). -

ABI means that changing from the default value may +

ABI-changing means that changing from the default value may mean changing the ABI 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.

_GLIBCXX_USE_DEPRECATED

- Defined by default. Not configurable. ABI-changing. Turning this off + Defined to the value 1 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. has_trivial_copy_assign removed. + +Calling a std::bind result as volatile was deprecated for C++17. + + Profile Mode was deprecated.

<constant>7.2</constant> @@ -1067,4 +1071,13 @@ the process.
+ +
<constant>12.3</constant> + +Calling a std::bind result as volatile is ill-formed for C++20 +and later. + + +
+ diff --git a/libstdc++-v3/doc/xml/manual/intro.xml b/libstdc++-v3/doc/xml/manual/intro.xml index d341c3efe6d..e3a03cf9d59 100644 --- a/libstdc++-v3/doc/xml/manual/intro.xml +++ b/libstdc++-v3/doc/xml/manual/intro.xml @@ -1163,6 +1163,15 @@ requirements of the license of GCC. ill-formed. + 2487: + bind() should be const-overloaded + not cv-overloaded + + + Deprecate volatile-qualified operator() + for C++17, make it ill-formed for C++20. + + 2499: operator>>(basic_istream&, CharT*) makes it hard to avoid buffer overflows diff --git a/libstdc++-v3/doc/xml/manual/using.xml b/libstdc++-v3/doc/xml/manual/using.xml index 0acdba6b3bd..9c444dd2997 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). - ABI means that changing from the default value may + ABI-changing means that changing from the default value may mean changing the ABI 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 _GLIBCXX_USE_DEPRECATED - Defined by default. Not configurable. ABI-changing. Turning this off + Defined to the value 1 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 c4f75880fd8..5235ef20332 100644 --- a/libstdc++-v3/include/std/functional +++ b/libstdc++-v3/include/std/functional @@ -465,6 +465,17 @@ _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 class _Bind; @@ -501,6 +512,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION ); } +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template _Result @@ -522,6 +534,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)... ); } +#endif // volatile template using _Mu_type = decltype( @@ -585,12 +598,7 @@ _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, add_volatile>> @@ -614,6 +622,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION std::forward_as_tuple(std::forward<_Args>(__args)...), _Bound_indexes()); } +#endif // volatile }; /// Type of the function object returned from bind(). @@ -649,9 +658,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION (std::get<_Indexes>(_M_bound_args), __args)...); } +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template - _GLIBCXX20_CONSTEXPR _Res __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile { @@ -661,7 +670,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Call as const volatile template - _GLIBCXX20_CONSTEXPR _Res __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const volatile @@ -669,6 +677,7 @@ _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; @@ -710,6 +719,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _Bound_indexes()); } +#ifdef _GLIBCXX_VOLATILE_BIND // Call as volatile template _GLIBCXX_DEPR_BIND @@ -731,7 +741,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION std::forward_as_tuple(std::forward<_Args>(__args)...), _Bound_indexes()); } +#else + template + 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 @@ -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(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 } @@ -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(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 } 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 // . -// { 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 #include @@ -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()