stderr 'p\.go:3:8: use of internal package net/http/internal not allowed'

-- testinternal/go.mod --
module testinternal

go 1.16
-- testinternal/p.go --
package p

import _ "net/http/internal"
-- testinternal2/go.mod --
module testinternal2

go 1.16
-- testinternal2/p.go --
package p

import _ "./x/y/z/internal/w"
-- testinternal2/x/y/z/internal/w/w.go --
package w
-- testinternal3/go.mod --

# such that the .syso file only works when linked against the .a file.
# Package a has #cgo LDFLAGS to make this happen.
#
# Package c imports package a, and uses cgo itself.
# The generation of the _cgo_import.go for package c will fail,
# because it won't know that it has to link against a/libb.a
# (because we don't gather the #cgo LDFLAGS from all transitively
# imported packages).
#

Build-Jdk: 1.5.0_06 org/codehaus/classworlds/BytesURLConnection.class package org.codehaus.classworlds; public synchronized class BytesURLConnection extends java.net.URLConnection { protected byte[] content; protected int offset; protected int length; public void BytesURLConnection(java.net.URL, byte[]); public void connect(); public java.io.InputStream getInputStream(); } org/codehaus/classworlds/BytesURLStreamHandle.class package org.codehaus.classworlds; public synchronized class BytesURLStreamHandle...

module m

go 1.16
-- pkg1/a.go --
package pkg1

import "fmt"

func F() {
	fmt.Println("pkg1")
}
-- pkg2/a.go --
package pkg2

import "fmt"

func F() {
	fmt.Println("pkg2")
}
-- pkg2/a_test.go --
package pkg2
-- pkg3/a.go --
package pkg3

import "fmt"

func F() {
	fmt.Println("pkg3")
}
-- pkg3/a_test.go --
package pkg3

import "testing"

go build -ldflags='-linkmode=external -linkmode=internal' -n prog.go
! stderr 'packagefile .*runtime/cgo.a'

-- z1/z.go --
package z1
import _ "y"
import _ "z2"

-- z1/z_test.go --
package z1_test
import "testing"
import _ "z3"
func Test(t *testing.T) {}

-- z2/z.go --
package z2

-- z3/z.go --
package z3

-- y/y.go --
package y

    <option name="IMPORT_LAYOUT_TABLE">
      <value>
        <package name="" withSubpackages="true" static="true" />
        <emptyLine />
        <package name="" withSubpackages="true" static="false" />
        <emptyLine />
        <package name="javax" withSubpackages="true" static="false" />
        <package name="java" withSubpackages="true" static="false" />
      </value>
    </option>

	{"package p; type _[P (*T), _ any] struct{}", "package p; type _[P *T, _ any] struct{}"},
	{"package p; type _[P (T),] struct{}", "package p; type _[P T] struct{}"},
	{"package p; type _[P (T), _ any] struct{}", "package p; type _[P T, _ any] struct{}"},

	{"package p; type _[P (*struct{})] struct{}", "package p; type _[P *struct{}] struct{}"},
	{"package p; type _[P ([]int)] struct{}", "package p; type _[P []int] struct{}"},

	UsageLine: "go run [build flags] [-exec xprog] package [arguments...]",
	Short:     "compile and run Go program",
	Long: `
Run compiles and runs the named main Go package.
Typically the package is specified as a list of .go source files from a single
directory, but it may also be an import path, file system path, or pattern
matching a single known package, as in 'go run .' or 'go run my/cmd'.

each of the listed packages. If the -m flag is given, why treats the
arguments as a list of modules and finds a path to any package in each
of the modules.

By default, why queries the graph of packages matched by "go list all",
which includes tests for reachable packages. The -vendor flag causes why
to exclude tests of dependencies.

The output is a sequence of stanzas, one for each package or module

// returns the name qualified with the package path.
func Id(pkg *Package, name string) string {
	if isExported(name) {
		return name
	}
	// unexported names need the package path for differentiation
	// (if there's no package, make sure we don't start with '.'
	// as that may change the order of methods between a setup
	// inside a package and outside a package - which breaks some
	// tests)
	path := "_"