Don't range over work. Len(work) can be larger than the usable memory, so ranging is incorrect

Author: btracey

native/dlantr.go

@@ -129,7 +129,8 @@ func (impl Implementation) Dlantr(norm lapack.MatrixNorm, uplo blas.Uplo, diag b
 			}
 		}
 		var max float64
-		for _, v := range work {
+		for i := 0; i < n; i++ {
+			v := work[i]
 			if math.IsNaN(v) {
 				return math.NaN()
 			}

testlapack/dlantr.go

@@ -66,7 +66,7 @@ func DlantrTest(t *testing.T, impl Dlantrer) {
 								aDense[i*lda+i] = 1
 							}
 						}
-						work := make([]float64, n)
+						work := make([]float64, n+6)
 						for i := range work {
 							work[i] = rand.Float64()
 						}