debug: Cannot Debug goyacc file #1674

acekingke · 2021-08-09T08:20:09Z

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go version go1.16.6 linux/amd64
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➜ ~ gopls -v version
Build info

golang.org/x/tools/gopls v0.7.1
golang.org/x/tools/[email protected] h1:Mh3Z8Xcoq3Zy7ksSlwDV/nzQSbjFf06A+L+F8YHq55U=
github.com/BurntSushi/[email protected] h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/google/[email protected] h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/sergi/[email protected] h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
golang.org/x/[email protected] h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
golang.org/x/[email protected] h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
golang.org/x/[email protected] h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
golang.org/x/[email protected] h1:ZC/gVBZl8poJyKzWLxxlsmhayVGosF4mohR35szD5Bg=
golang.org/x/[email protected] h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
honnef.co/go/[email protected] h1:ws8AfbgTX3oIczLPNPCu5166oBg9ST2vNs0rcht+mDE=
mvdan.cc/[email protected] h1:bi/1aS/5W00E2ny5q65w9SnKpWEF/UIOqDYBILpo9rA=
mvdan.cc/xurls/[email protected] h1:NSZPykBXJFCetGZykLAxaL6SIpvbVy/UFEniIfHAa8A

Run code -v or code-insiders -v to get version of VS Code or VS Code Insiders.
➜ ~ code -v
1.59.0
379476f0e13988d90fab105c5c19e7abc8b1dea8
x64
Check your installed extensions to get the version of the VS Code Go extension
Go
v0.26.0
Run Ctrl+Shift+P (Cmd+Shift+P on Mac OS) > Go: Locate Configured Go Tools command.
Checking configured tools....
GOBIN: undefined
toolsGopath:
gopath: /root/gopath
GOROOT: /root/go
PATH: /root/go/bin:/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/bin:/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/bin:/root/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/root/gopath/bin:/usr/local/bin

gopkgs: gopkgs not installed
go-outline: /root/gopath/bin/go-outline installed
gotests: /root/gopath/bin/gotests installed
gomodifytags: gomodifytags not installed
impl: impl not installed
goplay: goplay not installed
dlv: /root/gopath/bin/dlv installed
dlv-dap: dlv-dap not installed
staticcheck: staticcheck not installed
gopls: /root/gopath/bin/gopls installed

go env
Workspace Folder (radondb-mysql-kubernetes): /root/radondb-mysql-kubernetes
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/root/gopath/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/root/gopath"
GOPRIVATE=""
GOPROXY="https://goproxy.io"
GOROOT="/root/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/root/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.16.6"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/root/radondb-mysql-kubernetes/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build570529864=/tmp/go-build -gno-record-gcc-switches"

Share the Go related settings you have added/edited

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Share all the settings with the go. or ["go"] or gopls prefixes.

Describe the bug

I add expr.y , and go generate , But it cannot breakpoint for it

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This is an example of a goyacc program.
// To build it:
// goyacc -p "expr" expr.y (produces y.go)
// go build -o expr y.go
// expr
// > <type an expression>

%{

package main

import (
	"bytes"
	"fmt"
	"log"
	"math/big"

	"unicode/utf8"
)

%}

%union {
	num *big.Rat
}

%type	<num>	expr expr1 expr2 expr3

%token '+' '-' '*' '/' '(' ')'

%token	<num>	NUM

%%

top:
	expr
	{
		if $1.IsInt() {
			fmt.Println($1.Num().String())
		} else {
			fmt.Println($1.String())
		}
	}

expr:
	expr1
|	'+' expr
	{
		$$ = $2
	}
|	'-' expr
	{
		$$ = $2.Neg($2)
	}

expr1:
	expr2
|	expr1 '+' expr2
	{
		$$ = $1.Add($1, $3)
	}
|	expr1 '-' expr2
	{
		$$ = $1.Sub($1, $3)
	}

expr2:
	expr3
|	expr2 '*' expr3
	{
		$$ = $1.Mul($1, $3)
	}
|	expr2 '/' expr3
	{
		$$ = $1.Quo($1, $3)
	}

expr3:
	NUM
|	'(' expr ')'
	{
		$$ = $2
	}


%%

// The parser expects the lexer to return 0 on EOF.  Give it a name
// for clarity.
const eof = 0

// The parser uses the type <prefix>Lex as a lexer. It must provide
// the methods Lex(*<prefix>SymType) int and Error(string).
type exprLex struct {
	line []byte
	peek rune
}

// The parser calls this method to get each new token. This
// implementation returns operators and NUM.
func (x *exprLex) Lex(yylval *exprSymType) int {
	for {
		c := x.next()
		switch c {
		case eof:
			return eof
		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
			return x.num(c, yylval)
		case '+', '-', '*', '/', '(', ')':
			return int(c)

		// Recognize Unicode multiplication and division
		// symbols, returning what the parser expects.
		case '×':
			return '*'
		case '÷':
			return '/'

		case ' ', '\t', '\n', '\r':
		default:
			log.Printf("unrecognized character %q", c)
		}
	}
}

// Lex a number.
func (x *exprLex) num(c rune, yylval *exprSymType) int {
	add := func(b *bytes.Buffer, c rune) {
		if _, err := b.WriteRune(c); err != nil {
			log.Fatalf("WriteRune: %s", err)
		}
	}
	var b bytes.Buffer
	add(&b, c)
	L: for {
		c = x.next()
		switch c {
		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', 'e', 'E':
			add(&b, c)
		default:
			break L
		}
	}
	if c != eof {
		x.peek = c
	}
	yylval.num = &big.Rat{}
	_, ok := yylval.num.SetString(b.String())
	if !ok {
		log.Printf("bad number %q", b.String())
		return eof
	}
	return NUM
}

// Return the next rune for the lexer.
func (x *exprLex) next() rune {
	if x.peek != eof {
		r := x.peek
		x.peek = eof
		return r
	}
	if len(x.line) == 0 {
		return eof
	}
	c, size := utf8.DecodeRune(x.line)
	x.line = x.line[size:]
	if c == utf8.RuneError && size == 1 {
		log.Print("invalid utf8")
		return x.next()
	}
	return c
}

// The parser calls this method on a parse error.
func (x *exprLex) Error(s string) {
	log.Printf("parse error: %s", s)
}

func main() {
	linestring := "12+1"
	exprParse(&exprLex{line:  []byte(linestring)})
}

The debug launch.json as follow:

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "program": "${workspaceRoot}/expr.go",
            "env": {},
            "externalConsole": true,
            "args": []
        }
    ]
}

Steps to reproduce the behavior:

configure the lauch.json
breakpiont in expr.go main function
run, It cannot breakpoint

Screenshots or recordings

If applicable, add screenshots or recordings to help explain your problem.

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

hyangah · 2021-08-09T18:08:36Z

@acekingke We need more info. Is there any error message shown in the DEBUG CONSOLE pane or popup message?

acekingke · 2021-08-10T04:05:31Z

NO message， just cannot break at breakpoint

hyangah · 2021-08-10T17:16:36Z

@acekingke Can you please update the extension to the latest (v0.27.0) and enable verbose logging and share what's printed in DEBUG CONSOLE pane?

To enable verbose logging:

   "logOutput": "dap,debugger",
   "showLog": true

acekingke · 2021-08-11T03:45:22Z

It is updated to v0.27.0.
result is :

Starting: /root/gopath/bin/dlv-dap dap --listen=127.0.0.1:33063 --log=true --log-output=debugger,dap --log-dest=3
DAP server listening at: 127.0.0.1:33063
2021-08-11T11:43:21+08:00 debug layer=dap DAP server pid = 292825
2021-08-11T11:43:21+08:00 debug layer=dap [<- from client]{"seq":1,"type":"request","command":"initialize","arguments":{"clientID":"vscode","clientName":"Visual Studio Code","adapterID":"go","locale":"en","linesStartAt1":true,"columnsStartAt1":true,"pathFormat":"path","supportsVariableType":true,"supportsVariablePaging":true,"supportsRunInTerminalRequest":true,"supportsMemoryReferences":true,"supportsProgressReporting":true,"supportsInvalidatedEvent":true}}
2021-08-11T11:43:21+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true,"supportsFunctionBreakpoints":true,"supportsConditionalBreakpoints":true,"supportsEvaluateForHovers":true,"supportsSetVariable":true,"supportsExceptionInfoRequest":true,"supportTerminateDebuggee":true,"supportsDelayedStackTraceLoading":true,"supportsClipboardContext":true}}
2021-08-11T11:43:21+08:00 debug layer=dap [<- from client]{"seq":2,"type":"request","command":"launch","arguments":{"__configurationTarget":5,"__sessionId":"f4c75b6b-94bb-422d-8a9e-ddb3acd3c7e7","apiVersion":2,"args":[],"debugAdapter":"dlv-dap","dlvLoadConfig":{"followPointers":true,"maxArrayValues":64,"maxStringLen":64,"maxStructFields":-1,"maxVariableRecurse":1},"dlvToolPath":"/root/gopath/bin/dlv-dap","env":{"BROWSER":"/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/bin/helpers/browser.sh","GO111MODULE":"on","GOMODCACHE":"/root/gopath/pkg/mod","GOPATH":"/root/gopath","GOPROXY":"https://goproxy.io","GOROOT":"/root/go","HOME":"/root","LESS":"-R","LOGNAME":"root","LSCOLORS":"Gxfxcxdxbxegedabagacad","LS_COLORS":"","MAIL":"/var/mail/root","OLDPWD":"/root","PAGER":"less","PATH":"/root/go/bin:/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/bin:/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/bin:/root/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/root/gopath/bin:/usr/local/bin","PWD":"/root","SHELL":"/usr/bin/zsh","SHLVL":"1","SSH_CLIENT":"171.113.248.208 5003 22","SSH_CONNECTION":"171.113.248.208 5003 192.168.0.7 22","USER":"root","VSCODE_AGENT_FOLDER":"/root/.vscode-server","VSCODE_AMD_ENTRYPOINT":"vs/server/remoteExtensionHostProcess","VSCODE_CWD":"/root","VSCODE_EXTHOST_WILL_SEND_SOCKET":"true","VSCODE_HANDLES_UNCAUGHT_ERRORS":"true","VSCODE_INJECT_NODE_MODULE_LOOKUP_PATH":"/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/remote/node_modules","VSCODE_IPC_HOOK_CLI":"/tmp/vscode-ipc-a95d610e-5060-4b2f-877e-9747b639d995.sock","VSCODE_LOG_NATIVE":"false","VSCODE_LOG_STACK":"false","VSCODE_NLS_CONFIG":"{\"locale\":\"en\",\"availableLanguages\":{}}","VSCODE_PIPE_LOGGING":"true","VSCODE_VERBOSE_LOGGING":"true","ZSH":"/root/.oh-my-zsh","_":"/root/.vscode-server/bin/379476f0e13988d90fab105c5c19e7abc8b1dea8/node"},"externalConsole":true,"logOutput":"debugger,dap","mode":"debug","name":"Launch","packagePathToGoModPathMap":{"/root/temp":"/dev"},"program":"/root/temp/expr.go","request":"launch","showGlobalVariables":false,"showLog":true,"substitutePath":[],"type":"go"}}
2021-08-11T11:43:21+08:00 debug layer=dap debug backend is 'default'
2021-08-11T11:43:21+08:00 debug layer=dap building binary '/root/temp/__debug_bin' from '/root/temp/expr.go' with flags ''
2021-08-11T11:43:21+08:00 debug layer=dap running program in /root/temp

2021-08-11T11:43:21+08:00 info layer=debugger launching process with args: [/root/temp/__debug_bin]
2021-08-11T11:43:21+08:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"initialized"}
2021-08-11T11:43:21+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":2,"success":true,"command":"launch"}
2021-08-11T11:43:21+08:00 debug layer=dap [<- from client]{"seq":3,"type":"request","command":"setBreakpoints","arguments":{"source":{"name":"expr.go","path":"/root/temp/expr.go"},"breakpoints":[{"line":144},{"line":553},{"line":599}],"lines":[144,553,599]}}
2021-08-11T11:43:21+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":3,"success":true,"command":"setBreakpoints","body":{"breakpoints":[{"verified":false,"message":"could not find file /root/temp/expr.go","source":{}},{"verified":false,"message":"could not find file /root/temp/expr.go","source":{}},{"verified":false,"message":"could not find file /root/temp/expr.go","source":{}}]}}
2021-08-11T11:43:22+08:00 debug layer=dap [<- from client]{"seq":4,"type":"request","command":"setFunctionBreakpoints","arguments":{"breakpoints":[]}}
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":4,"success":true,"command":"setFunctionBreakpoints","body":{"breakpoints":[]}}
2021-08-11T11:43:22+08:00 debug layer=dap [<- from client]{"seq":5,"type":"request","command":"configurationDone","arguments":{}}
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":5,"success":true,"command":"configurationDone"}
2021-08-11T11:43:22+08:00 debug layer=debugger continuing
13
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"terminated","body":{}}
2021-08-11T11:43:22+08:00 debug layer=dap [<- from client]{"seq":6,"type":"request","command":"threads"}
2021-08-11T11:43:22+08:00 debug layer=dap Process 292868 has exited with status 0
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":6,"success":true,"command":"threads","body":{"threads":[{"id":1,"name":"Dummy"}]}}
2021-08-11T11:43:22+08:00 debug layer=dap [<- from client]{"seq":7,"type":"request","command":"disconnect","arguments":{}}
2021-08-11T11:43:22+08:00 debug layer=debugger halting
2021-08-11T11:43:22+08:00 debug layer=dap halt returned state: Process 292868 has exited with status 0
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"output","body":{"category":"console","output":"Process 292868 has exited with status 0\n","source":{}}}
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"output","body":{"category":"console","output":"Detaching\n","source":{}}}
2021-08-11T11:43:22+08:00 debug layer=debugger detaching
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":7,"success":true,"command":"disconnect"}
2021-08-11T11:43:22+08:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"terminated","body":{}}
2021-08-11T11:43:22+08:00 debug layer=dap DAP server stopping...
2021-08-11T11:43:22+08:00 debug layer=dap DAP server stopped
Process 292868 has exited with status 0
Detaching
dlv dap (292825) exited with code: 0

hyangah · 2021-08-12T01:56:09Z

Thanks @aceking

Looks like the breakpoint couldn't be found from the compiled binary. There are visual signals for unverified breakpoints
but since the program exited so fast, it's possible that users wouldn't recognize it.

2021-08-11T11:43:21+08:00 debug layer=dap [-> to client]{
"seq":0,"type":"response","request_seq":3,"success":true,
"command":"setBreakpoints","body":{
   "breakpoints":[{"verified":false,"message":"could not find file /root/temp/expr.go","source":{}}, ...

Not sure why this happened. My current guess is the symlink - @acekingke what is the relationship between /root/temp and /dev?

2021-08-11T11:43:21+08:00 debug layer=dap [<- from  #client]{"seq":2,"type":"request","command":"launch","arguments":{
...
"packagePathToGoModPathMap": {"/root/temp":"/dev"},
"program":"/root/temp/expr.go",
"request":"launch",
...}

acekingke · 2021-08-12T06:51:14Z

It's not symlink

acekingke · 2021-08-18T03:20:41Z

/root/temp is my code directory ，I don't why /dev occur here

acekingke · 2021-08-18T03:22:22Z

/root/temp is my code directory ，I don't why /dev occur here

hyangah · 2021-11-10T22:19:21Z

Sorry I cannot guess your file system set up but the extension and go command's behavior. The /dev is the directory the Go command think the go.mod file exists - the go extension retrieves this info by running go env GOMOD command from the workspace root directory (i.e. /root/temp).

If the problem persists, I think one option is to use the substitutePath attribute to tell dlv to treat all /root/temp file names like /dev.

gopherbot added this to the Untriaged milestone Aug 9, 2021

hyangah added Debug Issues related to the debugging functionality of the extension. WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. labels Aug 9, 2021

hyangah changed the title ~~Cannot Debug goyacc file~~ debug: Cannot Debug goyacc file Aug 9, 2021

hyangah closed this as completed Nov 12, 2021

golang locked and limited conversation to collaborators Nov 12, 2022

gopherbot added the FrozenDueToAge label Nov 12, 2022

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debug: Cannot Debug goyacc file #1674

debug: Cannot Debug goyacc file #1674

acekingke commented Aug 9, 2021

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hyangah commented Nov 10, 2021

debug: Cannot Debug goyacc file #1674

debug: Cannot Debug goyacc file #1674

Comments

acekingke commented Aug 9, 2021

What version of Go, VS Code & VS Code Go extension are you using?

Share the Go related settings you have added/edited

Describe the bug

Steps to reproduce the behavior:

Screenshots or recordings

hyangah commented Aug 9, 2021

acekingke commented Aug 10, 2021

hyangah commented Aug 10, 2021

acekingke commented Aug 11, 2021

hyangah commented Aug 12, 2021

acekingke commented Aug 12, 2021

acekingke commented Aug 18, 2021

acekingke commented Aug 18, 2021

hyangah commented Nov 10, 2021