var go/build/constraint.errComplex

4 uses

	go/build/constraint (current package)
		expr.go#L434: 					return nil, errComplex
		expr.go#L443: 				return nil, errComplex
		expr.go#L469: var errComplex = errors.New("expression too complex for // +build lines")
		expr.go#L490: 					return nil, errComplex