Item10778: Gauges don't work with some versions of GD

I have two servers with GD installed, and both exhibit the problem that when GD::Polygon is called, I get an uninitialised variable error in the midst of the code. Tracking it back, it's due to the lack of two undocumented parameters to GD::Polygon->scale. The call that is there is correct according to the docco, but when you read down through the code it's bound to cause an uninitalised var :-(.

Relevant code:

• GD version 2.45
• GaugePlugin.pm: 271 (works if you add , 0, 0 to the parameters)
• GD::Polygon: 180 -> 173 falls over because $tx, $ty are undefined

As far as I can see the error is clearly in the GD code. But I don't understand how GaugePlugin can ever have worked (or how GD works, for that matter!).

As I said, changing GaugePlugin.pm:271 to:

    $poly->scale( $xscale, 1, 0, 0 );

cures the problem (or at least masks it)

This code is identical in GD 2.46 (the latest)

-- CrawfordCurrie - 26 May 2011

Put the fix described above in. Seems ok on all revs of GD I tested.

-- CrawfordCurrie - 14 Jun 2011

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