Date: Sun, 09 May 2021 03:13:08 +0000 From: bugzilla-noreply@freebsd.org To: standards@FreeBSD.org Subject: [Bug 255720] std::memory_order::memory_order_seq_cst doesn't exist in c++2a when the standard says that it should exist Message-ID: <bug-255720-99@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255720 Bug ID: 255720 Summary: std::memory_order::memory_order_seq_cst doesn't exist in c++2a when the standard says that it should exist Product: Base System Version: 12.2-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: standards Assignee: standards@FreeBSD.org Reporter: yuri@freebsd.org This code: > #include <atomic> >=20 > void f() { > std::atomic<unsigned int> n; > n.fetch_add(std::memory_order::memory_order_seq_cst); > } fails with -std=3Dc++2a: > x.cpp:10:33: error: no member named 'memory_order_seq_cst' in 'std::__1::= memory_order' > n.fetch_add(std::memory_order::memory_order_seq_cst); > ~~~~~~~~~~~~~~~~~~~^ but succeeds with -std=3Dc++17. The standard doesn't say that this symbol is obsoleted in c++20: https://en.cppreference.com/w/cpp/atomic/memory_order --=20 You are receiving this mail because: You are the assignee for the bug.=
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