package main disallowed import path

[crusj]

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

$ go version
go version go1.13.3 darwin/amd64

Does this issue reproduce with the latest release?

i don't know ,first use module, mac down but linux works well with the same situation

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

$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/crusj/Library/Caches/go-build"
GOENV="/Users/crusj/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/crusj/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/crusj/go/src/micro/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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/x8/v_x56q612ml4rk7b51lmy5140000gn/T/go-build739983740=/tmp/go-build -gno-record-gcc-switches -fno-common"

go env Output

What did you do?

go run main.go

├── go.mod
├── go.sum
├── main.go
└── test
    └── test.go
main.go

package main

import (
	"fmt"
	"github.com/crusj/testmod"
	"mod/test"
)

func main() {
	fmt.Println(testmod.Hi("roberto"))
	test.T()
}

test.go

package test
func T(){
  println(111)
}

go.mod

module mod

go 1.13

require github.com/crusj/testmod v1.0.1

What did you expect to see?

111

What did you see instead?

package main
imports mod/test: disallowed import path "mod/test"

[ianlancetaylor]

This is working as expected. In general import paths should either be in the standard library or should start with a domain name. In effect the go tool treats all paths starting with "mod" as being in the standard library, but none of those paths may be imported.

[crusj]

3q