Perform conversion from string to []byte according to rule #6 at https://golang.org/pkg/unsafe/#Pointer

Author: valyala

util_noappengine.go

@@ -7,14 +7,13 @@ import (
 	"unsafe"
 )
 
-func unsafeStrToBytes(s string) []byte {
+func unsafeStrToBytes(s string) (b []byte) {
 	sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
-	bh := reflect.SliceHeader{
-		Data: sh.Data,
-		Len:  sh.Len,
-		Cap:  sh.Len,
-	}
-	return *(*[]byte)(unsafe.Pointer(&bh))
+	bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
+	bh.Data = sh.Data
+	bh.Len = sh.Len
+	bh.Cap = sh.Len
+	return b
 }
 
 func unsafeBytesToStr(z []byte) string {