[fix] safer panic for unwanted type

nanmu42 · nanmu42 · commit 70ef53d0bd0a · 2018-09-08T21:42:06.000+08:00
calling Interface() may trigger a further panic.
diff --git a/reflect.go b/reflect.go
@@ -43,7 +43,7 @@ func valueToStr(v reflect.Value) (str string) {
 	case reflect.Int:
 		str = strconv.FormatInt(v.Int(), 10)
 	default:
-		panic(fmt.Sprintf("valueToStr: %v is of unexpected kind %q", v.Interface(), v.Kind()))
+		panic(fmt.Sprintf("valueToStr: %v is of unexpected kind %q", v, v.Kind()))
 	}
 	return
 }

Original file line number	Diff line number	Diff line change
`@@ -43,7 +43,7 @@ func valueToStr(v reflect.Value) (str string) {`
`43`	`43`	`case reflect.Int:`
`44`	`44`	`str = strconv.FormatInt(v.Int(), 10)`
`45`	`45`	`default:`
`46`		`- panic(fmt.Sprintf("valueToStr: %v is of unexpected kind %q", v.Interface(), v.Kind()))`
	`46`	`+ panic(fmt.Sprintf("valueToStr: %v is of unexpected kind %q", v, v.Kind()))`
`47`	`47`	`}`
`48`	`48`	`return`
`49`	`49`	`}`