How can you tell when a bitmap is ready to be read from?

Hi!

I've noticed that this:

`func calculateBitSetChecksum(dest *checksumStruct, bitmap map[string]uint, imageAsBaseSixtyFour string, numberOfPixels int) {

for i := 0; i < len(imageAsBaseSixtyFour)-numberOfPixels; i++ {
	dest.checksum.Add(uint32(bitmap[imageAsBaseSixtyFour[i:(i+numberOfPixels)]]))
}
dest.checksumReady = true

}`

This is run in a go routine, and later on I want to do some operation much later:

for checksumsSlice[i].checksumReady == false {}

(This waits until checksumReady == true)

checksumReady is true but highlowcontainer is nil...

Is there a way to ensure that the bitmap is valid?

Thanks!

Start by tracing calculateBitSetChecksum and every read or write of checksumReady and highlowcontainer. Reproduce the concurrent access described in the issue, then verify that the bitmap is observed only after checksum computation and related state are complete, including the nil case.