// run -goexperiment fieldtrack

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

func main() {
	var i interface{} = new(T)
	if _, ok := i.(interface{ Bad() }); ok {
		panic("FAIL")
	}
}

type T struct{ U }

type U struct{}

//go:nointerface

# Tests golang.org/issue/48490
# cmd/go should enable concurrent compilation by default

# Reset all experiments, since one of them can disable
# concurrent compilation, e.g: fieldtrack.
env GOEXPERIMENT=none

env GOMAXPROCS=4
go build -n -x -a fmt

// compile -goexperiment fieldtrack

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package p

func a(x struct{ f int }) { _ = x.f }

// license that can be found in the LICENSE file.

package main

import (
	"fmt"
	"os"

	"issue30862.dir/b"
)

// Test case for issue 30862.

// Be aware that unless GOEXPERIMENT=fieldtrack is set when building
// the compiler, this test will fail if executed with a regular GC
// compiler.

func main() {
	bad := b.Test()
	if len(bad) > 0 {
		for _, s := range bad {

// run -goexperiment fieldtrack

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test that generics, promoted methods, and //go:nointerface
// interoperate as expected.

package main

import (
	"reflect"
)

func TypeString[T any]() string {
	return reflect.TypeOf(new(T)).Elem().String()
}

	bench.Start("deadcode")
	deadcode(ctxt)

	bench.Start("linksetup")
	ctxt.linksetup()

	bench.Start("dostrdata")
	ctxt.dostrdata()
	if buildcfg.Experiment.FieldTrack {
		bench.Start("fieldtrack")
		fieldtrack(ctxt.Arch, ctxt.loader)
	}

	bench.Start("dwarfGenerateDebugInfo")
	dwarfGenerateDebugInfo(ctxt)

	bench.Start("callgraph")
	ctxt.callgraph()

	bench.Start("doStackCheck")

	}

	// Build a package in a mode not handled by the make script.
	runCmd(t, gorootSrc, env, goCmdPath, "build", "-race", "archive/tar")

	// Rebuild the toolchain with GOEXPERIMENT.
	env = append(env, "GOEXPERIMENT=fieldtrack")
	runCmd(t, gorootSrc, env, makeScriptPath)

	// Verify compiler version string.
	gotVersion = bytes.TrimSpace(runCmd(t, gorootSrc, env, goCmdPath, "tool", "compile", "-V=full"))

//
// For the baseline experimental configuration, see
// objabi.experimentBaseline.
//
// If you change this struct definition, run "go generate".
type Flags struct {
	FieldTrack        bool
	PreemptibleLoops  bool
	StaticLockRanking bool
	BoringCrypto      bool

	// Regabi is split into several sub-experiments that can be
	// enabled individually. Not all combinations work.

	-installsuffix suffix
		Look for packages in $GOROOT/pkg/$GOOS_$GOARCH_suffix
		instead of $GOROOT/pkg/$GOOS_$GOARCH.
	-k symbol
		Set field tracking symbol. Use this flag when GOEXPERIMENT=fieldtrack is set.
	-libgcc file
		Set name of compiler support library.
		This is only used in internal link mode.
		If not set, default value comes from running the compiler,
		which may be set by the -extld option.

	}
	if outer.Sym() == nil {
		base.Errorf("tracked field must be in named struct type")
	}

	sym := reflectdata.TrackSym(outer, field)
	if ir.CurFunc.FieldTrack == nil {
		ir.CurFunc.FieldTrack = make(map[*obj.LSym]struct{})
	}
	ir.CurFunc.FieldTrack[sym] = struct{}{}