use unsafe.Slice

Author: mattn

sqlite3_opt_serialize.go

@@ -17,7 +17,6 @@ import "C"
 import (
 	"fmt"
 	"math"
-	"reflect"
 	"unsafe"
 )
 
@@ -43,14 +42,8 @@ func (c *SQLiteConn) Serialize(schema string) ([]byte, error) {
 		return nil, fmt.Errorf("serialized database is too large (%d bytes)", sz)
 	}
 
-	cBuf := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
-		Data: uintptr(unsafe.Pointer(ptr)),
-		Len:  int(sz),
-		Cap:  int(sz),
-	}))
-
 	res := make([]byte, int(sz))
-	copy(res, cBuf)
+	copy(res, unsafe.Slice((*byte)(unsafe.Pointer(ptr)), int(sz)))
 	return res, nil
 }
 
@@ -67,12 +60,7 @@ func (c *SQLiteConn) Deserialize(b []byte, schema string) error {
 	defer C.free(unsafe.Pointer(zSchema))
 
 	tmpBuf := (*C.uchar)(C.sqlite3_malloc64(C.sqlite3_uint64(len(b))))
-	cBuf := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
-		Data: uintptr(unsafe.Pointer(tmpBuf)),
-		Len:  len(b),
-		Cap:  len(b),
-	}))
-	copy(cBuf, b)
+	copy(unsafe.Slice((*byte)(unsafe.Pointer(tmpBuf)), len(b)), b)
 
 	rc := C.sqlite3_deserialize(c.db, zSchema, tmpBuf, C.sqlite3_int64(len(b)),
 		C.sqlite3_int64(len(b)), C.SQLITE_DESERIALIZE_FREEONCLOSE)