address comments

internal/driver/driver_test.go

@@ -288,7 +288,7 @@ type testFlags struct {
 	floats      map[string]float64
 	strings     map[string]string
 	args        []string
-	stringLists map[string][]*string
+	stringLists map[string][]string
 }
 
 func (testFlags) ExtraUsage() string { return "" }
@@ -355,7 +355,11 @@ func (f testFlags) StringVar(p *string, s, d, c string) {
 
 func (f testFlags) StringList(s, d, c string) *[]*string {
 	if t, ok := f.stringLists[s]; ok {
-		return &t
+		tp := make([]*string, len(t))
+		for i, v := range t {
+			tp[i] = &v
+		}
+		return &tp
 	}
 	return &[]*string{}
 }

internal/driver/fetch_test.go

@@ -437,20 +437,10 @@ func TestFetchWithBase(t *testing.T) {
 	for _, tc := range testcases {
 		t.Run(tc.desc, func(t *testing.T) {
 			pprofVariables = baseVars.makeCopy()
-			base := make([]*string, len(tc.bases))
-			for i, s := range tc.bases {
-				base[i] = &s
-			}
-
-			diffBase := make([]*string, len(tc.diffBases))
-			for i, s := range tc.diffBases {
-				diffBase[i] = &s
-			}
-
 			f := testFlags{
-				stringLists: map[string][]*string{
-					"base":      base,
-					"diff_base": diffBase,
+				stringLists: map[string][]string{
+					"base":      tc.bases,
+					"diff_base": tc.diffBases,
 				},
 				bools: map[string]bool{
 					"normalize": tc.normalize,
@@ -468,8 +458,8 @@ func TestFetchWithBase(t *testing.T) {
 				if err == nil {
 					t.Fatalf("got nil, want error %q", tc.wantErrorMsg)
 				}
-				gotErrMsg := err.Error()
-				if gotErrMsg != tc.wantErrorMsg {
+
+				if gotErrMsg := err.Error(); gotErrMsg != tc.wantErrorMsg {
 					t.Fatalf("got error %q, want error %q", gotErrMsg, tc.wantErrorMsg)
 				}
 				return
@@ -485,7 +475,7 @@ func TestFetchWithBase(t *testing.T) {
 				t.Fatal(err)
 			}
 
-			if want, got := len(tc.wantSamples), len(p.Sample); want != got {
+			if got, want := len(p.Sample), len(tc.wantSamples); got != want {
 				t.Fatalf("got %d samples want %d", got, want)
 			}
 

internal/report/report.go

@@ -264,7 +264,7 @@ func (rpt *Report) newGraph(nodes graph.NodeSet) *graph.Graph {
 		s.NumUnit = numUnits
 	}
 
-	// Remove tag marking samples from the base profiles, so it does not appear
+	// Remove label marking samples from the base profiles, so it does not appear
 	// as a nodelet in the graph view.
 	prof.RemoveLabel("pprof::base")
 
@@ -1217,8 +1217,8 @@ func NewDefault(prof *profile.Profile, options Options) *Report {
 }
 
 // computeTotal computes the sum of the absolute value of all sample values.
-// If any samples have the tag "pprof::base" with value "true", then the total
-// will only include samples with that tag.
+// If any samples have the label "pprof::base" with value "true", then the total
+// will only include samples with that label.
 func computeTotal(prof *profile.Profile, value, meanDiv func(v []int64) int64) int64 {
 	var div, total, diffDiv, diffTotal int64
 	for _, sample := range prof.Sample {