GLUT timedCallback fires twice

The Graphics.UI.GLUT.Callbacks.Global.addTimerCallback doesn't function as expected when called from a timed callback.

Expected Behavior: When a timed callback is registered, it fires at the specified interval.

Observed Behavior: If the timed callback is registered from a timed callback, the callback fires immediately every other time. The first callback is appropriately delayed and the second fires immediately.

Impact: 50% of callbacks fire prematurely.

Workaround: Check the time between callbacks. If the callback occurs within a certain amount of time, do no work and register another callback. Repeat until a reasonable amount of time has passed.

System: Mac OS X 10.4.10, Macbook Pro 2.33 GHz Core 2 Duo, 2 GB of RAM, ATI X1600

Trac metadata

Trac field	Value
Version	6.6.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	libraries (other)
Test case
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