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Disable -Wctor-dtor-privacy warnings for some standard types 

* include/experimental/type_traits (experimental::nonesuch): Use
	pragma to disable -Wctor-dtor-privacy warnings.
	* include/std/type_traits (__is_convertible_helper<From, To, false>)
	(__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.

From-SVN: r272289
This commit is contained in:
Jonathan Wakely 2019-06-14 15:03:20 +01:00 committed by Jonathan Wakely
parent c68c4c982d
commit cc28d23496
3 changed files with 17 additions and 1 deletions
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5
libstdc++-v3/ChangeLog
View File

@ -1,5 +1,10 @@
2019-06-14 Jonathan Wakely <jwakely@redhat.com>
* include/experimental/type_traits (experimental::nonesuch): Use
pragma to disable -Wctor-dtor-privacy warnings.
* include/std/type_traits (__is_convertible_helper<From, To, false>)
(__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
* include/std/version (__cpp_lib_bind_front): Add missing macro.
2019-06-12 Jonathan Wakely <jwakely@redhat.com>

3
libstdc++-v3/include/experimental/type_traits
View File

@ -227,6 +227,8 @@ inline namespace fundamentals_v2
template<typename...> using void_t = void;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wctor-dtor-privacy"
struct __nonesuchbase {};
struct nonesuch : private __nonesuchbase
{
@ -234,6 +236,7 @@ struct nonesuch : private __nonesuchbase
nonesuch(nonesuch const&) = delete;
void operator=(nonesuch const&) = delete;
};
#pragma GCC diagnostic pop
template<template<typename...> class _Op, typename... _Args>
using is_detected

10
libstdc++-v3/include/std/type_traits
View File

@ -1448,6 +1448,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typedef typename is_void<_To>::type type;
};
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wctor-dtor-privacy"
template<typename _From, typename _To>
class __is_convertible_helper<_From, _To, false>
{
@ -1466,7 +1468,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
public:
typedef decltype(__test<_From, _To>(0)) type;
};
#pragma GCC diagnostic pop
/// is_convertible
template<typename _From, typename _To>
@ -1481,6 +1483,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
: is_void<_To>
{ };
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wctor-dtor-privacy"
template<typename _From, typename _To>
class __is_nt_convertible_helper<_From, _To, false>
{
@ -1499,6 +1503,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
public:
using type = decltype(__test<_From, _To>(0));
};
#pragma GCC diagnostic pop
// is_nothrow_convertible for C++11
template<typename _From, typename _To>
@ -2894,12 +2899,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__call_is_nothrow_<_Fn, _Args...>>::type
{ };
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wctor-dtor-privacy"
struct __nonesuchbase {};
struct __nonesuch : private __nonesuchbase {
~__nonesuch() = delete;
__nonesuch(__nonesuch const&) = delete;
void operator=(__nonesuch const&) = delete;
};
#pragma GCC diagnostic pop
#if __cplusplus >= 201703L
# define __cpp_lib_is_invocable 201703