From: Paul Koning <paulkoning@comcast.net>
To: Andrew Pinski <pinskia@gmail.com>
Cc: GCC Development <gcc@gcc.gnu.org>
Subject: Re: Possible C++ method signature warning feature?
Date: Thu, 11 Aug 2022 09:00:27 -0400 [thread overview]
Message-ID: <B2E3F27E-E12A-45C9-AA59-521830A4D2A3@comcast.net> (raw)
In-Reply-To: <CA+=Sn1n0phHFP_NFYECT-n4Qs5fUhOvaJm8FSK-r19C=Kj_SNw@mail.gmail.com>
> On Aug 10, 2022, at 9:25 PM, Andrew Pinski <pinskia@gmail.com> wrote:
>
> On Wed, Aug 10, 2022 at 6:20 PM Paul Koning via Gcc <gcc@gcc.gnu.org> wrote:
>>
>> There's a C++ problem I keep running into, in a very large body of software with lots of subclassing.
>>
>> There's a base class that defines a set of interface methods, not all pure virtual (some define the default behavior). A number of subclasses override some but not all of these.
>>
>> Now I find myself changing the argument list of some of these methods, so I have to change the base class definitions and also track down all the subclass redefinitions. If I miss one of the latter, that subclass method is no longer called (it now just looks like an unrelated method with a different argument list that isn't used anywhere). Finding these things can be hard and time consuming.
>>
>> It would be helpful to have some way to mark a method as "this is supposed to be an override of a base class method", in other words "warn me if this method doesn't override some method in a base class".
>
> C++11's overload keyword sounds exactly what you want.
> https://en.cppreference.com/w/cpp/language/override
Perfect! Thanks much.
paul
prev parent reply other threads:[~2022-08-11 13:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-11 1:18 Paul Koning
2022-08-11 1:25 ` Andrew Pinski
2022-08-11 13:00 ` Paul Koning [this message]
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