Re: [boost] "peer reviewed" - Rights and responsibilities of maintainers

Subject: Re: [boost] "peer reviewed" - Rights and responsibilities of maintainers
From: Peter Dimov (lists_at_[hidden])
Date: 2018-10-17 00:22:44

Gavin Lambert wrote:

> Conceptually "is_destroyed" is usually a bad idea.  By definition, after 
> the destructor has run the memory is free to get stomped on by other 
> objects and thus you can't rely on is_destroyed to return any particular 
> value.  Trying to rely on it is UB.

It would be undefined to access the "is_destroyed" bool if it were a member 
of the singleton, but it's a function local static in Alexander's code, and 
it looks OK to me in that formulation. Static bools are never destroyed.