* [committed] libstdc++: Add noexcept to some std::function internals
@ 2021-10-05 8:38 Jonathan Wakely
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From: Jonathan Wakely @ 2021-10-05 8:38 UTC (permalink / raw)
To: libstdc++, gcc-patches
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libstdc++-v3/ChangeLog:
* include/bits/std_function.h (_Any_data::_M_access): Add
noexcept.
(_Function_base::_Base_manager::_M_get_pointer): Likewise.
(_Function_base::_Base_manager::_M_not_empty_function):
Likewise.
Tested powerpc64le-linux. Committed to trunk.
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commit 9665c2e76849c8e0066c6660779ae082fce67ea8
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Mon Oct 4 15:22:58 2021
libstdc++: Add noexcept to some std::function internals
libstdc++-v3/ChangeLog:
* include/bits/std_function.h (_Any_data::_M_access): Add
noexcept.
(_Function_base::_Base_manager::_M_get_pointer): Likewise.
(_Function_base::_Base_manager::_M_not_empty_function):
Likewise.
diff --git a/libstdc++-v3/include/bits/std_function.h b/libstdc++-v3/include/bits/std_function.h
index 3dda820bd1a..55738440949 100644
--- a/libstdc++-v3/include/bits/std_function.h
+++ b/libstdc++-v3/include/bits/std_function.h
@@ -82,17 +82,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
union [[gnu::may_alias]] _Any_data
{
- void* _M_access() { return &_M_pod_data[0]; }
- const void* _M_access() const { return &_M_pod_data[0]; }
+ void* _M_access() noexcept { return &_M_pod_data[0]; }
+ const void* _M_access() const noexcept { return &_M_pod_data[0]; }
template<typename _Tp>
_Tp&
- _M_access()
+ _M_access() noexcept
{ return *static_cast<_Tp*>(_M_access()); }
template<typename _Tp>
const _Tp&
- _M_access() const
+ _M_access() const noexcept
{ return *static_cast<const _Tp*>(_M_access()); }
_Nocopy_types _M_unused;
@@ -131,7 +131,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Retrieve a pointer to the function object
static _Functor*
- _M_get_pointer(const _Any_data& __source)
+ _M_get_pointer(const _Any_data& __source) noexcept
{
if _GLIBCXX17_CONSTEXPR (__stored_locally)
{
@@ -217,22 +217,22 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Signature>
static bool
- _M_not_empty_function(const function<_Signature>& __f)
+ _M_not_empty_function(const function<_Signature>& __f) noexcept
{ return static_cast<bool>(__f); }
template<typename _Tp>
static bool
- _M_not_empty_function(_Tp* __fp)
+ _M_not_empty_function(_Tp* __fp) noexcept
{ return __fp != nullptr; }
template<typename _Class, typename _Tp>
static bool
- _M_not_empty_function(_Tp _Class::* __mp)
+ _M_not_empty_function(_Tp _Class::* __mp) noexcept
{ return __mp != nullptr; }
template<typename _Tp>
static bool
- _M_not_empty_function(const _Tp&)
+ _M_not_empty_function(const _Tp&) noexcept
{ return true; }
};
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