pkg/kfuzztest: fix coverage collection and output

Ethan Graham · Ethan Graham · commit 497948e14ced · 2025-09-02T12:54:17.000Z
diff --git a/pkg/corpus/corpus.go b/pkg/corpus/corpus.go
@@ -260,3 +260,7 @@ func (corpus *Corpus) ProgsPerArea() map[string]int {
 	}
 	return ret
 }
+
+func (corpus *Corpus) Cover() []uint64 {
+	return corpus.cover.Serialize()
+}
diff --git a/pkg/kfuzztest-manager/manager.go b/pkg/kfuzztest-manager/manager.go
@@ -173,10 +173,10 @@ FuzzLoop:
 }
 
 func (mgr *kFuzzTestManager) writePCs(filepath string) error {
-	sigs := mgr.fuzzer.Load().Cover.CopyMaxSignal()
+	sigs := mgr.fuzzer.Load().Config.Corpus.Cover()
 	pcs := []uint64{}
-	for sig := range sigs {
-		pcs = append(pcs, uint64(sig))
+	for _, sig := range sigs {
+		pcs = append(pcs, sig)
 	}
 	slices.Sort(pcs)
 	var builder strings.Builder

Original file line number	Diff line number	Diff line change
`@@ -260,3 +260,7 @@ func (corpus *Corpus) ProgsPerArea() map[string]int {`
`260`	`260`	`}`
`261`	`261`	`return ret`
`262`	`262`	`}`
	`263`	`+`
	`264`	`+func (corpus *Corpus) Cover() []uint64 {`
	`265`	`+ return corpus.cover.Serialize()`
	`266`	`+}`
Original file line number	Diff line number	Diff line change
`@@ -173,10 +173,10 @@ FuzzLoop:`
`173`	`173`	`}`
`174`	`174`
`175`	`175`	`func (mgr *kFuzzTestManager) writePCs(filepath string) error {`
`176`		`- sigs := mgr.fuzzer.Load().Cover.CopyMaxSignal()`
	`176`	`+ sigs := mgr.fuzzer.Load().Config.Corpus.Cover()`
`177`	`177`	`pcs := []uint64{}`
`178`		`- for sig := range sigs {`
`179`		`- pcs = append(pcs, uint64(sig))`
	`178`	`+ for _, sig := range sigs {`
	`179`	`+ pcs = append(pcs, sig)`
`180`	`180`	`}`
`181`	`181`	`slices.Sort(pcs)`
`182`	`182`	`var builder strings.Builder`