garble/testdata/scripts/plugin.txt

skip # TODO: get plugins working properly. See issue #87

[windows] skip 'Go plugins are not supported on Windows'

env GOGARBLE=test/main

garble build -buildmode=plugin ./plugin
binsubstr plugin.so 'PublicVar' 'PublicFunc'
! binsubstr plugin.so 'privateFunc'

# Note that we need -trimpath; see the caveat section in the README.
go build -trimpath
exec ./main
cmp stderr main.stderr
binsubstr main$exe 'PublicVar' 'PublicFunc'

[short] stop # no need to verify this with -short

# This used to fail, since in this case the package path for the ad-hoc plugin
# package isn't "main", but "plugin/unnamed-*".
garble build -buildmode=plugin plugin/main.go

go build -buildmode=plugin ./plugin
binsubstr plugin.so 'PublicVar' 'PublicFunc' 'privateFunc'
go build
exec ./main
cmp stderr main.stderr

-- go.mod --
module test/main

go 1.17
-- plugin/main.go --
package main

import "test/main/plugin/lib"

var PublicVar int = lib.ImportedFunc()

func privateFunc(n int) { println("Hello, number", n) }

func PublicFunc() { privateFunc(PublicVar) }
-- plugin/lib/lib.go --
package lib

func ImportedFunc() int { return 4 }
-- main.go --
package main

import "plugin"

func main() {
	p, err := plugin.Open("plugin.so")
	if err != nil {
		panic(err)
	}
	v, err := p.Lookup("PublicVar")
	if err != nil {
		panic(err)
	}
	f, err := p.Lookup("PublicFunc")
	if err != nil {
		panic(err)
	}
	*v.(*int) = 7
	f.(func())()
}
-- main.stderr --
Hello, number 7