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Subject: Re: [std-proposals] Allow [[deprecated]] on call site to disable deprecated warning
From: codusnocturnus (codusnocturnus_at_[hidden])
Date: 2021-01-28 07:27:52


The major compilers provide a way to suppress specific warnings.

https://godbolt.org/z/YaEv5M

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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, January 28, 2021 4:05 AM, Dominic Fandrey via Std-Proposals <std-proposals_at_[hidden]> wrote:

> I recently ran into this issue:
>
> 1. Marked a set of legacy methods [[deprecated]]
> 2. Unit tests no longer compile (we run -Wall -Werror of course)
>
> Of course I don't want to get rid of the unit tests before I get rid of the
> functions. So I was faced with two choices:
>
> 3. Create #ifdef #pragma soup for all 3 compilers that we use
> 4. Remove [[deprecated]]
>
> The #ifdef #pragma soup needs to be updated every time a compiler is added,
> and it bloats the code and makes unit tests more difficult to read. So I
> went for option 2. As long as I cannot ignore [[deprecated]] in a portable
> manner I cannot use it.
>
> So my suggestion is:
>
>
> [[deprecated("use: std::optional<std::size_t> size()")]]int size(std::size_t & size);
>
>
>
> bool test_size() {
> std::size_t s{0};
> return 0 == [[deprecated]]size(s) && s != 0;
> }
>
>
> Regards
>
> ----------
>
> Std-Proposals mailing list
> Std-Proposals_at_[hidden]
> https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals


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