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cmd/compile: ICE: index out of range [0] with length 0 #52233

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bambuo opened this issue Apr 8, 2022 · 1 comment
Closed

cmd/compile: ICE: index out of range [0] with length 0 #52233

bambuo opened this issue Apr 8, 2022 · 1 comment

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@bambuo
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@bambuo bambuo commented Apr 8, 2022

环境 / environment

$ go version
go version go1.18 windows/amd64
$ go env
set GO111MODULE=on
set GOARCH=amd64                                     
set GOBIN=                                           
set GOCACHE=C:\Users\chenchong\AppData\Local\go-build
set GOENV=C:\Users\chenchong\AppData\Roaming\go\env  
set GOEXE=.exe                                       
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\chenchong\.go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\chenchong\.go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.com.cn,direct
set GOROOT=D:\Developer\Tools\go1.18
set GOSUMDB=off
set GOTMPDIR=
set GOTOOLDIR=D:\Developer\Tools\go1.18\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.18
set GCCGO=gccgo
set GOAMD64=v1
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=NUL
set GOWORK=
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\CHENCH~1\AppData\Local\Temp\go-build107498046=/tmp/go-build -gno-record-gcc-switches

问题 / issue

无法借助编译器得到更明确的指导信息

No more explicit guidance can be obtained from the compiler

代码 / code

node.go

package structure_list

type node[T any] struct {
	prev *node[T] //前驱
	data T        //数据域
	next *node[T] //后继
}

type linkedList[T any] struct {
	data *node[T]
}

func (l *linkedList[T]) Add(data T) *linkedList[T] {
	node := newNode(data)
	if nil == l.data {
		l.data = node
	} else {
		l.data.Put(data)
	}
	return l
}

func (l *linkedList[T]) AddAll(elements ...T) *linkedList[T] {
	for _, v := range elements {
		l.Add(v)
	}
	return l
}

func NewLinkedList[T any](elements ...T) *linkedList[T] {
	list := &linkedList[T]{}
	list.AddAll(elements...)
	return list
}

func newNode[T any](data T) *node[T] {
	node := &node[T]{data: data}
	node.prev = node
	node.next = node
	return node
}

// Put 前插法
func (l *node[T]) Put(data T) *node[T] {
	node := newNode(data)
	// 1 <->  2 <-> 3 <-> 1
	// 如果 l 是 2 节点, next 就是 3
	next := l.next
	// 将 3 的前驱重定向到新的节点 4
	// 1 <->  2
	// ... 4 <- 3 <-> 1
	next.prev = node
	// 将 4 的后继重定向到 3
	// ... 4 <-> 3 <-> 1
	node.next = next
	// 将 4 的前驱重定向到 2
	// 1 <->  2 <- 4 <-> 3 <-> 1
	node.prev = l
	// 将 2 的后继重定向到 4
	// 1 <->  2 <-> 4 <-> 3 <-> 1
	l.next = node
	return l
}

func (l *node[T]) len(node *node[T], count int64) int64 {
	if l == node {
		return count
	}
	return l.len(node.next, count+1)
}

func (l *node[T]) Len() int64 {
	next := l.next
	return l.len(next, 1)
}
package structure_list

import (
	"math/rand"
	"testing"
)

func TestNewNode(t *testing.T) {
	list := NewLinkedList[int](rand.Intn(50), rand.Intn(50), rand.Intn(50), rand.Intn(50), rand.Intn(50), rand.Intn(50))
	t.Log(list)
	t.Log()
}

go.mod

module structure_list

go 1.18

输出 / output

GOROOT=D:\Developer\Tools\go1.18 #gosetup
GOPATH=C:\Users\chenchong\.go #gosetup
D:\Developer\Tools\go1.18\bin\go.exe test -c -o C:\Users\chenchong\AppData\Local\Temp\GoLand\___structure_list__TestNewNode__1_.test.exe -gcflags "all=-N -l" structure_list #gosetup
# structure_list [structure_list.test]
<autogenerated>:1: internal compiler error: panic: runtime error: index out of range [0] with length 0

Please file a bug report including a short program that triggers the error.
https://go.dev/issue/new

求助 / help

代码经个人审视多次,暂时没有找到问题,现在不知道如何处理。还请相关了有遇到类似问题的提供解答 。

The code has been inspected for many times, but no problem has been found. Now I don't know how to deal with it. Please also provide solutions for those who have encountered similar problems.

@cherrymui cherrymui changed the title panic: runtime error: index out of range [0] with length 0 cmd/compile: ICE: index out of range [0] with length 0 Apr 8, 2022
@cherrymui
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@cherrymui cherrymui commented Apr 8, 2022

This fails with Go 1.18, but passes with Go tip and with release-branch.go1.18 branch. So this is already fixed and will be included in the Go 1.18.1 release next week.

I'm going to close this as already fixed. Thanks.

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