Re: [Boost-users] [BGL][variant] variant as internal edge property - nastiness w/MS7.1 + 1.31.0

From: Doug Gregor (dgregor_at_[hidden])
Date: 2004-12-15 15:35:59

On Dec 10, 2004, at 9:38 AM, Christopher D. Russell wrote:

> This isn't a question but rather a quick report for my future 
> reference - I
> need to circle back and try to characterize this problem more fully 
> when I'm
> not on deadline and can run some additional tests with Boost 1.32.0.
>
> Environment:
>
> - MS 7.1 compiler w/their STL distribution
> - Boost 1.31.0 (my client doesn't want to update to 1.32.0 until after 
> this
> release)
>
> Summary:
>
> boost::variant registered as an internal edge property map member on a 
> BGL
> graph causes the resultant graph to be inaccessible due to what 
> appears to be
> incorrect initialization of both the internal vertex and edge property 
> maps.
> I SUSPECT THAT THE ROOT CAUSE OF THIS CAN BE TRACKED BACK TO A MS 7.1
> COMPILER BUG due to the fact that attempts to compile my test code 
> results in
> either of (a) an C1001 Internal Compiler Error (b) a error-free 
> compile and a
> completely screwed runtime.

That's really strange... we've never come across any initialization 
problems (on any platform) with these, especially because the internal 
properties are just stored in lists or vectors most of the time... 
nothing fancy going on there.

I would appreciate if you could check with 1.32.0 and if you're still 
running into the problem we'll see if we can duplicate it and come up 
with a workaround.

        Doug