Re: [Boost-users] [Container] Does deque allocate memory in default constructor?

Subject: Re: [Boost-users] [Container] Does deque allocate memory in default constructor?
From: Ion Gaztañaga (igaztanaga_at_[hidden])
Date: 2017-10-25 21:01:54

On 25/10/2017 17:17, dariomt--- via Boost-users wrote:
> It seems std::deque implementations are allowed to allocate in the 
> default constructor [1]
> 
> However, boost::container::deque I think does not allocate in the 
> default constructor, but the docs are not explicit about it.
> 
> I can see in the docs:
> *Throws*: If allocator_type's default constructor throws.

Isn't that explicit enough?

> Which would mean that it cannot throw due to memory exhaustion, so it 
> cannot allocate memory.
> 
> Is my reasoning right?

Yes. All Boost.Container containers don't allocate in the default 
constructor.

> If yes, would it be possible to make this explicit in the docs?
> I think it is relevant, because it might be the deciding factor for 
> switching from std::deque to boost::container::deque (as it might be my 
> case).

Please open a issue so that this is not forgotten.

Best,

Ion