Re: [boost] [system] Would it be possible to trial a breaking change to Boost.System and see what happens?

Andrey Semashev wrote:

In my code I'm using contextual conversion to bool extensively, e.g. "if (err)" or "if (!err)". This is currently equivalent to comparing against 0, so I assume it will be broken by this change.

It will only be broken if you rely on `error_code( 0, some-category )` to contextually-convert to `false`. A default-constructed error_code, or one that's been cleared, will still be `false`. A principled approach would be to ask the category whether a code is `true` or `false`, but that might be complexity and overhead nobody needs.