在初步使用kitex的时候,我仿照官方的文档,在hello目录下执行go run .。但是报错信息如下:
C:\Users\Administrator\go\pkg\mod\github.com\cloudwego\dynamicgo@v0.2.0\internal\rt\int48.go:25:25: MinInt48 (untyped int constant -140737488355328) overflows int
报错的代码部分如下:
/*
* Copyright 2023 CloudWeGo Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package rt
const (
MinInt48 = -(1 << 47)
MaxInt48 = +(1 << 47) - 1
)
func PackInt(v int) uint64 {
if u := uint64(v); v < MinInt48 || v > MaxInt48 {
panic("int48 out of range")
} else {
return ((u >> 63) << 47) | (u & 0x00007fffffffffff)
}
}
func UnpackInt(v uint64) int {
v &= 0x0000ffffffffffff
v |= (v >> 47) * (0xffff << 48)
return int(v)
}
在初步使用kitex的时候,我仿照官方的文档,在hello目录下执行
go run .
。但是报错信息如下:报错的代码部分如下:
报错代码行为第25行的
MinInt48
。这是一个48位整数,但是报错数字越界。此外,MinInt48
和v
进行了大小比较,说明这两个变量类型是相同的。在Golang中,int类型由平台确定。建议对32位兼容。