--- /dev/null
+package pkg
+
+import "fmt"
+
+func fn() {
+ _ = fmt.Sprint("foo") // want `unnecessary use of fmt\.Sprint`
+ _ = fmt.Sprintf("foo") // want `unnecessary use of fmt\.Sprintf`
+ _ = fmt.Sprintf("foo %d")
+ _ = fmt.Sprintf("foo %d", 1)
+
+ var x string
+ _ = fmt.Sprint(x)
+}