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[bug #26207] corner cases in 'override' logic for variables

From: Paul D. Smith
Subject: [bug #26207] corner cases in 'override' logic for variables
Date: Sun, 31 May 2009 22:06:05 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/2009042513 Ubuntu/8.04 (hardy) Firefox/3.0.10

Update of bug #26207 (project make):

                  Status:                    None => Fixed                  
             Assigned to:                    None => psmith                 
             Open/Closed:                    Open => Closed                 
           Fixed Release:                    None => CVS                    


Follow-up Comment #1:

The initial behavior is indeed correct, as Manoj has explained.  Once a
variable is elevated to the status of "override", which is the highest
priority a variable can have, any subsequent assignment or append to that
variable which is of a lower priority will be ignored.  You can continue to
append to that variable, or even change its value, but only if you precede the
subsequent assignments with "override" as well.  I added some text to the GNU
make manual that might make this clearer.

As for the other effects you observed, those are due to a real bug in the
system.  I've attached a patch here which I will be committing as soon as
Savannah's source control systems come back up.

(file #18213)

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