var runtime.earlycgocallback

3 uses

	runtime (current package)
		proc.go#L1815: 		write(2, unsafe.Pointer(&earlycgocallback[0]), int32(len(earlycgocallback)))
		proc.go#L1871: var earlycgocallback = []byte("fatal error: cgo callback before cgo call\n")