Re: [boost] gcc 4.4.3 + boost optional 1.40 crash [same with boost 1.50/1.52]

Subject: Re: [boost] gcc 4.4.3 + boost optional 1.40 crash [same with boost 1.50/1.52]
From: Gaetano Mendola (mendola_at_[hidden])
Date: 2012-11-23 10:47:42

On 11/23/2012 03:29 PM, Gaetano Mendola wrote:
> On 11/23/2012 12:25 PM, Sergey Cheban wrote:
>> On 23.11.2012 12:28, Gaetano Mendola wrote:
>>
>>> after banging my head for an entire day I come out with this
>>> test case showing a possible bug in gcc 4.4.3 or in boost optional,
>>> the test crashes with a pure virtual method called only if compiled
>>> only with -O1, -O2, -O3.
>>> The same code in another machine with gcc 4.7.2 and boost 1.49 works
>>> fine.
>> So, the bug you are talking about seems to be already fixed. What else do you want from the boost and gcc developers?
>
> Sorry?
>
> Are you suggesting to ditch gcc and/or boost released with the distribution we use,
> and say to our development department gcc and/or boost fixed it "by accident" on their
> last releases?
>
> I would like you to consider the following, not impossible, scenario:
>
> In boost 1.40 boost::optionals is doing something that c++ doesn't allow marked as:
> "if you do it the result is: 'everyone guess'".
> That is translated in "pure virtual function call" in gcc 4.4.3 and "no operation" in
> gcc 4.7.2.
> I would not sleep well if my own code is crashing (for no apparent reason) on a not
> 10 year old gcc compiler.
>
> Now, let's make this thread a constructive thread instead to "smarty pants" here and
> there.
>
> As suggested by another user I tried with gcc 4.4.3 + boost 1.50 and it crash I have
> tried with boost 1.52 and it crash as well.
> At this point or is a boost bug (not yet resolved) or a gcc bug corrected by accident
> or not in the new release. GCC people do release fixes on old version then it's important
> to submit the bug as soon we know who is faulty here.

I have submitted the bug to gcc, for any reference

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55449

Regards
Gaetano Mendola