wastedassign: remove limitation related to generics support (#3689)

pkg/lint/lintersdb/manager.go

@@ -851,8 +851,7 @@ func (m Manager) GetAllSupportedLinterConfigs() []*linter.Config {
 			WithSince("v1.38.0").
 			WithPresets(linter.PresetStyle).
 			WithLoadForGoAnalysis().
-			WithURL("https://github.com/sanposhiho/wastedassign").
-			WithNoopFallback(m.cfg),
+			WithURL("https://github.com/sanposhiho/wastedassign"),
 
 		linter.NewConfig(golinters.NewWhitespace(whitespaceCfg)).
 			WithSince("v1.19.0").

test/testdata/sqlclosecheck.go

@@ -16,7 +16,6 @@ var (
 )
 
 func rowsCorrectDeferBlock() {
-
 	rows, err := db.QueryContext(ctx, "SELECT name FROM users WHERE age=?", age)
 	if err != nil {
 		log.Fatal(err)
@@ -91,6 +90,13 @@ func rowsMissingClose() {
 	log.Printf("%s are %d years old", strings.Join(names, ", "), age)
 }
 
+func rowsMissingCloseG[T ~int64](db *sql.DB, a T) {
+	rows, _ := db.Query("select id from tb") // want "Rows/Stmt was not closed"
+	for rows.Next() {
+		// ...
+	}
+}
+
 func rowsNonDeferClose() {
 	rows, err := db.QueryContext(ctx, "SELECT name FROM users WHERE age=?", age)
 	if err != nil {

test/testdata/wastedassign.go

@@ -117,6 +117,18 @@ func mugen() {
 	return
 }
 
+func mugenG[T ~int](hoge T) {
+	var i int
+	for {
+		hoge = 5 // want "assigned to hoge, but reassigned without using the value"
+		// break
+	}
+
+	println(i)
+	println(hoge)
+	return
+}
+
 func noMugen() {
 	var i int
 	var hoge int