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@@ -67,7 +67,7 @@ public:
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using sink_type = sink<sigh<Ret(Args...), Allocator>>;
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/*! @brief Default constructor. */
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- sigh() noexcept(std::is_nothrow_constructible_v<sigh, const allocator_type &>)
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+ sigh() noexcept(std::is_nothrow_default_constructible_v<allocator_type> &&std::is_nothrow_constructible_v<container_type, const allocator_type &>)
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: sigh{allocator_type{}} {}
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/**
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Michele Caini