Re: [boost] [FSM] Review library version update

From: Andreas Huber (ahd6974-spamgroupstrap_at_[hidden])
Date: 2007-02-05 18:03:27

Steven Watanabe wrote:
> AMDG
>
> Andreas Huber <ahd6974-spamgroupstrap <at> yahoo.com> writes:
>
>>
>> Steven Watanabe wrote:
>>>
>>> GetPodInstance() is probably safe, but the standard does
>>> not require it. "A local object of POD type (3.9) with static
>>> storage duration initialized with constant-expressions is
>>> initialized before its block is first entered." (6.7/4)
>>
>> Interesting, from the wording above I would have concluded that the
>> standard *does* require it.
>>
>
> To be safe the compiler would have to initialize
> the object statically. i.e. before any code whatsoever
> is executed.  The wording does not require that.

I guess you are right regarding the wording but in practice such 
initialization takes place much earlier than the standard requires. 
Otherwise such a widespread library as pthreads would have a major 
problem:

http://www.codesourcery.com/archives/c++-pthreads/msg00582.html

-- 
Andreas Huber
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