Re: [boost] [Serialization] Bizarre bug

Subject: Re: [boost] [Serialization] Bizarre bug
From: Robert Ramey (ramey_at_[hidden])
Date: 2009-08-03 17:12:34

I just compiled and ran this test with no problem on MSVC 7.1

Robert Ramey

troy d. straszheim wrote:
> Jarl Lindrud wrote:
>> There is a rather bizarre bug in Boost.Serialization, that was
>> reported on this list three years ago:
>>
>> http://article.gmane.org/gmane.comp.lib.boost.devel/147010/match=serialization
>>  +bizarre+bug
>>
>> To sum up, a piece of code that is never even executed, is causing a
>> serialization error in a different part of the program.
>>
>> Unfortunately it seems that this bug was never fixed - I just tried
>> it on Boost 1.39.0, and the bug is still there.
>>
>> Any chance something can be done about it?
>>
>> For reference, here is the sample program that reproduces the issue:
>>
>
> Looks like UB to me.  From the C++ standard:
>
> Note: in particular, a null reference cannot exist in a well-defined
> program, because the only way to create such a reference would be to
> bind it to the "object" obtained by dereferencing a null pointer,
> which causes undefined behavior. (§ 8.3.2, ¶ 4)
>
> There is plenty of stuff out on the net about this; I find this thread
> pretty entertaining:
>
> http://stackoverflow.com/questions/1110111/what-part-of-dereferencing-null-pointers-causes-undesired-behavior/1110146#1110146
>
> -t
> _______________________________________________
> Unsubscribe & other changes:
> http://lists.boost.org/mailman/listinfo.cgi/boost