garble build -tags buildtag
exec ./main
cmp stdout main.stdout

! binsubstr main$exe 'ImportedVar' 'ImportedConst' 'ImportedFunc' 'ImportedType' 'main.go' 'imported.go'

[short] stop # checking that the build is reproducible is slow

# Also check that the binary is reproducible when many imports are involved.
cp main$exe main_old$exe
rm main$exe
garble build -tags buildtag
bincmp main$exe main_old$exe

go build -tags buildtag
exec ./main
cmp stdout main.stdout

# Also check that -literals doesn't break anything
garble -literals build -tags buildtag
exec ./main
cmp stdout main.stdout

-- go.mod --
module test/main
-- main.go --
package main

import (
	"fmt"
	"reflect"
	_ "unsafe"

	"test/main/imported"

	"rsc.io/quote"
)

//go:linkname linkedPrintln fmt.Println
func linkedPrintln(a ...interface{}) (n int, err error)

func main() {
	fmt.Println(imported.ImportedVar)
	fmt.Println(imported.ImportedConst)
	fmt.Println(imported.ImportedFunc('x'))
	fmt.Println(imported.ImportedType(3))

	fmt.Printf("%T\n", imported.ReflectTypeOf(2))
	fmt.Printf("%T\n", imported.ReflectTypeOfIndirect(4))

	v := imported.ReflectValueOfVar
	fmt.Printf("%#v\n", v)
	method := reflect.ValueOf(&v).MethodByName("ExportedMethodName")
	if method.IsValid() {
		fmt.Println(method.Call(nil))
	} else {
		fmt.Println("method not found")
	}

	linkedPrintln(nil)
	fmt.Println(quote.Go())
}
-- notag_fail.go --
// +build !buildtag

package main

var foo int = "should be omitted by -tags"
-- withtag_success.go --
// +build buildtag

package main

import "fmt"

func init() { fmt.Println("buildtag init func") }
-- imported/imported.go --
package imported

import "reflect"

var ImportedVar = "imported var value"

const ImportedConst = "imported const value"

func ImportedFunc(param rune) string {
	return string(param)
}

type ReflectTypeOf int

var _ = reflect.TypeOf(ReflectTypeOf(0))

type ReflectTypeOfIndirect int

var _ = reflect.TypeOf(new([]*ReflectTypeOfIndirect))

type ReflectValueOf struct {
	ExportedField   string

	unexportedField string
}

func (r *ReflectValueOf) ExportedMethodName() string { return "method: "+r.ExportedField }

var ReflectValueOfVar = ReflectValueOf{ExportedField: "abc"}

var _ = reflect.TypeOf(ReflectValueOfVar)

// ImportedType comes after the calls to reflect, to ensure no false positives.
type ImportedType int

-- main.stdout --
buildtag init func
imported var value
imported const value
x
3
imported.ReflectTypeOf
imported.ReflectTypeOfIndirect
imported.ReflectValueOf{ExportedField:"abc", unexportedField:""}
[method: abc]
<nil>
Don't communicate by sharing memory, share memory by communicating.