Re: [boost] Current Guidance on Compiler Warnings?

Subject: Re: [boost] Current Guidance on Compiler Warnings?
From: Emil Dotchevski (emildotchevski_at_[hidden])
Date: 2018-11-25 03:31:22

On Sat, Nov 24, 2018 at 5:19 PM Rob Stewart via Boost <boost_at_[hidden]>
wrote:
> Your point that a cast may not be the best solution to eliminating
warnings is valid. Assertions, range checking, or library solutions are
necessary to know that operations are safe. With those in place, pragmas
and casts can be used to silence warnings.

I wouldn't place pragmas and casts in the same category. Using a pragma to
silence a warning will not alter the program semantically, while a cast
will.

> You may argue that the implicit conversion is correct, but it is as much
subject to breakage by future maintenance as your example.

I could argue that the implicit conversion is more likely to be correct,
but I didn't do that. Here is my argument again:

1) A cast has different semantics than an implicit conversion.

2) If the implicit conversion is correct, replacing it with a cast to
silence a warning is incorrect.

Which of these two points do you think is false?