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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/114152] Wrong exception specifiers for LFTSv3 scope
 guard destructors
Date: Wed, 28 Feb 2024 14:50:40 +0000
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X-Bugzilla-Component: libstdc++
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Message-ID: <bug-114152-4-OmV9jwTpO1@http.gcc.gnu.org/bugzilla/>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114152

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I can take care of it this time, since I think I can figure out how to fix =
it
just from your detailed report :-) and I've already written a testcase:


// { dg-do compile { target c++20 } }

// PR libstdc++/114152
// Wrong exception specifiers for LFTSv3 scope guard destructors

#include <experimental/scope>

using namespace std::experimental;

struct F {
  void operator()() noexcept(false);
};

static_assert( noexcept(std::declval<scope_exit<F>&>().~scope_exit()) );
static_assert( noexcept(std::declval<scope_fail<F>&>().~scope_fail()) );
static_assert( ! noexcept(std::declval<scope_success<F>&>().~scope_success(=
))
);

struct G {
  void operator()() noexcept(true);
};

static_assert( noexcept(std::declval<scope_exit<G>&>().~scope_exit()) );
static_assert( noexcept(std::declval<scope_fail<G>&>().~scope_fail()) );
static_assert( noexcept(std::declval<scope_success<G>&>().~scope_success())=
 );=