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From: "steve+gcc at tecwec dot eu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/95454] type-level nodiscard not applied to constructors
Date: Thu, 30 Dec 2021 16:31:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95454

Eric Estievenart <steve+gcc at tecwec dot eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |steve+gcc at tecwec dot eu

--- Comment #1 from Eric Estievenart <steve+gcc at tecwec dot eu> ---
Indeed, confirming with even simpler code ( https://godbolt.org/z/EPbsfxYcj=
 ):

struct [[nodiscard]] Z {};

void f()
{
    Z{}; // should warn but does not
}

Tested all versions: 11.2, trunk, with -Wall -Wextra -....

This is really a need for modern code, even experienced developpers sometim=
es
forget the 'lock' in
Lock lock{&mutex};
and this has severe consequences ;-)=