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gc variables in use #39

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pkujhd opened this issue Jul 30, 2021 · 1 comment

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bug

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pkujhd commented Jul 30, 2021

package main

import (
	"fmt"
	"runtime"
)

type Vertex struct {
	X, Y int
}

func (v *Vertex) Print() {
	fmt.Println("print", v)
}

type PrintInf interface {
	Print()
}

var uptr *Vertex
var uptra *Vertex

func main() {
	uptr = new(Vertex)
	uptra = uptr
	uptr.X = 1000
	uptr.Y = 1000
	uptr = new(Vertex)
	fmt.Println(uptr, uptra)
	runtime.GC()
	fmt.Println(uptr.X, uptr.Y, uptra)
}

run result:

&{0 0} &{1000 1000}
0 0 &{1000 1000}
&{0 0} &{1000 1000}
0 0 &{1000 2109488}
&{0 0} &{1000 1000}
0 0 &{0 0}
&{0 0} &{1000 1000}
0 0 &{1000 2109488}
&{0 0} &{1000 1000}
0 0 &{0 0}
&{0 0} &{1000 1000}
0 0 &{1000 2109488}
&{0 0} &{1000 1000}
0 0 &{0 0}
&{0 0} &{1000 1000}
0 0 &{0 0}
&{0 0} &{1000 1000}
0 0 &{0 0}
&{0 0} &{1000 1000}
0 0 &{0 0}

runtime gc variables in use

The text was updated successfully, but these errors were encountered:

pkujhd added the bug label

Owner Author

pkujhd commented Jul 30, 2021

not set gcdatamask and gcbssmask will lead to gcmarkroot failed.

pkujhd closed this as completed in

d41c48c

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