[Scons-users] Possible bug with Value objects

[Tom Tanner (BLOOMBERG/ LONDON)]

ack. that doesn't seem to work, assuming I copied id correctly.

I had a version that worked entirely off stringified values which worked but wasn't very elegant

From: dl9obn at darc.de At: Feb 28 2015 10:42:35
To: scons-users at scons.org
Subject: Re: [Scons-users] Possible bug with Value objects

Hi Tom,

On 27.02.2015 17:48, Tom Tanner (BLOOMBERG/ LONDON) wrote:
> I've been trying to get my head round this, but it appears that the code to 
explain why a build has happened has problems with Value
> objects.
>

after some debugging of your example, I share your concerns. There are two 
basic problems, appearing for strange reasons that I 
still didn't fully understand:

1.) The default "__eq__" for Values doesn't work, so "x in l" fails...even if x 
is a member of the seq l, but of type Value!
2.) In the list of children (old_bkids/new_bkids, in Node.explain()), instances 
of the NodeInfo class may exist when Value nodes are 
involved.

Attached you can find a preliminary patch that seems to fix the problem. Do you 
think this is the right way to go, meaning: does 
this look reasonable to you?

Please open a ticket for this issue in the Tigris bug tracker, thanks a lot in 
advance.

Best regards,

Dirk


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