runtime.traceFrame.fileID (field)

3 uses

	runtime (current package)
		tracestack.go#L201: 		w.varint(frame.fileID)
		tracestack.go#L233: 	fileID uint64
		tracestack.go#L253: 	frame.fileID = trace.stringTab[gen%2].put(gen, file)

The pages are generated with Golds v0.8.4. (GOOS=linux GOARCH=amd64)