What version of Go are you using (go version)?

$ go version
go version go1.17.6 linux/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17.6"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
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-build3228886816=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Trying to parse a CSV file which has an escaped double quote at the end of line. I get an error that it has wrong number of fields.

Contents of test.csv that Fails:

field_1,field_2
abc,"xy\"
z"

Code to reproduce the issue:

package main

import (
	"encoding/csv"
	"fmt"
	"io"
	"log"
	"os"
)

func main() {
	csvfile, err := os.Open("test.csv")
	if err != nil {
		log.Fatalln("Couldn't open the csv file", err)
	}

	r := csv.NewReader(csvfile)
	r.LazyQuotes = true
	// r.FieldsPerRecord = 0

	for {
		record, err := r.Read()
		if err == io.EOF {
			break
		}
		if err != nil {
			log.Fatal(err)
		}
		fmt.Printf("%s,%s\n", record[0], record[1])
	}
}

What did you expect to see?

$ go build main.go && ./main
field_1,field_2
abc,xy"
z

What did you see instead?

field_1,field_2
abc,xy\
2022/02/01 23:18:41 record on line 3: wrong number of fields