@@ -99,6 +99,14 @@
# define _GLIBCXX_ABI_TAG_CXX11 __attribute ((__abi_tag__ ("cxx11")))
#endif
+// Macro to warn about unused results.
+#if __cplusplus >= 201703L
+# define _GLIBCXX_NODISCARD [[__nodiscard__]]
+#else
+# define _GLIBCXX_NODISCARD
+#endif
+
+
#if __cplusplus
@@ -380,37 +380,37 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// 20.7.2.2.7 shared_ptr comparisons
template<typename _Tp, typename _Up>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator==(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
{ return __a.get() == __b.get(); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator==(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return !__a; }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator==(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return !__a; }
template<typename _Tp, typename _Up>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator!=(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
{ return __a.get() != __b.get(); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator!=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return (bool)__a; }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator!=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return (bool)__a; }
template<typename _Tp, typename _Up>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
{
using _Tp_elt = typename shared_ptr<_Tp>::element_type;
@@ -420,7 +420,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{
using _Tp_elt = typename shared_ptr<_Tp>::element_type;
@@ -428,7 +428,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{
using _Tp_elt = typename shared_ptr<_Tp>::element_type;
@@ -436,47 +436,47 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
template<typename _Tp, typename _Up>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<=(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
{ return !(__b < __a); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return !(nullptr < __a); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return !(__a < nullptr); }
template<typename _Tp, typename _Up>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
{ return (__b < __a); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return nullptr < __a; }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return __a < nullptr; }
template<typename _Tp, typename _Up>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>=(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
{ return !(__a < __b); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return !(__a < nullptr); }
template<typename _Tp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return !(nullptr < __a); }
@@ -707,41 +707,41 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Tp, typename _Dp,
typename _Up, typename _Ep>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator==(const unique_ptr<_Tp, _Dp>& __x,
const unique_ptr<_Up, _Ep>& __y)
{ return __x.get() == __y.get(); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator==(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept
{ return !__x; }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator==(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept
{ return !__x; }
template<typename _Tp, typename _Dp,
typename _Up, typename _Ep>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator!=(const unique_ptr<_Tp, _Dp>& __x,
const unique_ptr<_Up, _Ep>& __y)
{ return __x.get() != __y.get(); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator!=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t) noexcept
{ return (bool)__x; }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator!=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x) noexcept
{ return (bool)__x; }
template<typename _Tp, typename _Dp,
typename _Up, typename _Ep>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<(const unique_ptr<_Tp, _Dp>& __x,
const unique_ptr<_Up, _Ep>& __y)
{
@@ -752,67 +752,67 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
{ return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(),
nullptr); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
{ return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr,
__x.get()); }
template<typename _Tp, typename _Dp,
typename _Up, typename _Ep>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<=(const unique_ptr<_Tp, _Dp>& __x,
const unique_ptr<_Up, _Ep>& __y)
{ return !(__y < __x); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
{ return !(nullptr < __x); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator<=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
{ return !(__x < nullptr); }
template<typename _Tp, typename _Dp,
typename _Up, typename _Ep>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>(const unique_ptr<_Tp, _Dp>& __x,
const unique_ptr<_Up, _Ep>& __y)
{ return (__y < __x); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
{ return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(nullptr,
__x.get()); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
{ return std::less<typename unique_ptr<_Tp, _Dp>::pointer>()(__x.get(),
nullptr); }
template<typename _Tp, typename _Dp,
typename _Up, typename _Ep>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>=(const unique_ptr<_Tp, _Dp>& __x,
const unique_ptr<_Up, _Ep>& __y)
{ return !(__x < __y); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>=(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
{ return !(__x < nullptr); }
template<typename _Tp, typename _Dp>
- inline bool
+ _GLIBCXX_NODISCARD inline bool
operator>=(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
{ return !(nullptr < __x); }