- 數(shù)組下標(biāo)越界(運(yùn)行時(shí)錯(cuò)誤)
package main
import "fmt"
func main() {
var s []string
fmt.Println(s)
fmt.Println(s[0])
}
運(yùn)行結(jié)果：
[]
panic: runtime error: index out of range
goroutine 1 [running]:
main.main()
- 空指針異常(運(yùn)行時(shí)錯(cuò)誤)
package main
import "fmt"
type Person struct {
Name string
Age int
}
func main() {
var p *Person
fmt.Println(p)
fmt.Println(p.Name)
}
運(yùn)行結(jié)果：
<nil>
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x10914c8]
goroutine 1 [running]:
main.main()
- 類型斷言失敗(接口轉(zhuǎn)換異常)
package main
import "fmt"
func main() {
add(20, 18)
add(1, "hello")
}
func add(a, b interface{}) {
i := a.(int)
j := b.(int)
fmt.Println(i+j)
}
運(yùn)行結(jié)果：
panic: interface conversion: interface {} is string, not int
38
goroutine 1 [running]:
main.add(0x10a0f60, 0x10d6840, 0x10a1660, 0x10d6b90)
- 通道為空，通道已關(guān)閉（寫(xiě)數(shù)據(jù)）
package main
func main() {
var ch chan int
close(ch)
}
運(yùn)行結(jié)果：
panic: close of nil channel
goroutine 1 [running]:
main.main()
package main
func main() {
var ch chan int
ch = make(chan int,0)
close(ch)
ch <- 108
}
運(yùn)行結(jié)果：
panic: send on closed channel
goroutine 1 [running]:
main.main()
- 死鎖，所有線程睡眠(致命錯(cuò)誤)
這一條是致命錯(cuò)誤，不屬于異常，但是跟異常一樣，會(huì)導(dǎo)致程序掛掉。
package main
func main() {
var ch chan int
ch = make(chan int)
ch <- 108
}
運(yùn)行結(jié)果：
fatal error: all goroutines are asleep - deadlock!
goroutine 1 [chan send]:
main.main()
