// Copyright 2009 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.

// go-specific code shared across loaders (5l, 6l, 8l).

package ld

import (
	"cmd/internal/bio"
	"cmd/internal/obj"
	"cmd/internal/objabi"
	"cmd/internal/sys"
	"cmd/link/internal/loader"
	"cmd/link/internal/sym"
	"debug/elf"
	"encoding/json"
	"fmt"
	"io"
	"os"

cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
cloud.google.com/go v0.110.7 h1:rJyC7nWRg2jWGZ4wSJ5nY65GTdYJkg0cd/uXb+ACI6o=

	{name: "go/bin", exclude: true},
	{name: "go/pkg", exclude: true},
	{name: "go/src/cmd/dist/dist", exclude: true},
	{name: "go/src/cmd/dist/dist.exe", exclude: true},

	{name: "go/bin/go", goos: "linux"},
	{name: "go/bin/go", goos: "darwin"},
	{name: "go/bin/go", goos: "windows", exclude: true},
	{name: "go/bin/go.exe", goos: "windows"},
	{name: "go/bin/gofmt", goos: "linux"},
	{name: "go/bin/gofmt", goos: "darwin"},

	github.com/go-asn1-ber/asn1-ber v1.5.7 // indirect
	github.com/go-jose/go-jose/v4 v4.0.2 // indirect
	github.com/go-logr/logr v1.4.2 // indirect
	github.com/go-logr/stdr v1.2.2 // indirect
	github.com/go-ole/go-ole v1.3.0 // indirect
	github.com/go-openapi/analysis v0.23.0 // indirect
	github.com/go-openapi/errors v0.22.0 // indirect
	github.com/go-openapi/jsonpointer v0.21.0 // indirect

	if !modload.WillBeEnabled() {
		telemetry.Inc("go/mode:gopath")
	} else if workfile := modload.FindGoWork(base.Cwd()); workfile != "" {
		telemetry.Inc("go/mode:workspace")
	} else {
		telemetry.Inc("go/mode:module")
	}
	telemetry.Inc("go/platform/target/goos:" + cfg.Goos)
	telemetry.Inc("go/platform/target/goarch:" + cfg.Goarch)
	switch cfg.Goarch {
	case "386":
		telemetry.Inc("go/platform/target/go386:" + cfg.GO386)
	case "amd64":

	$ go tool covdata textfmt -i=profiledir -o=cov.txt
	$ head cov.txt
	mode: set
	cov-example/p/p.go:12.22,13.2 0 0
	cov-example/p/p.go:15.31,16.2 1 0
	cov-example/p/p.go:16.3,18.3 0 0
	cov-example/p/p.go:19.3,21.3 0 0
	...
	$ go tool cover -html=cov.txt
	$

5. Merge profiles together:

	$ go tool covdata merge -i=indir1,indir2 -o=outdir -modpaths=github.com/go-delve/delve
	$

6. Subtract one profile from another

		"issue6889.go",   // gc-specific test
		"issue11362.go",  // canonical import path check
		"issue16369.go",  // go/types handles this correctly - not an issue
		"issue18459.go",  // go/types doesn't check validity of //go:xxx directives
		"issue18882.go",  // go/types doesn't check validity of //go:xxx directives
		"issue20529.go",  // go/types does not have constraints on stack size

// callsite: calls.go:209:14|0 flagstr "CallSiteOnPanicPath" flagval 2 score 42 mask 1 maskstr "panicPathAdj"
// callsite: calls.go:210:15|1 flagstr "CallSiteOnPanicPath" flagval 2 score 42 mask 1 maskstr "panicPathAdj"
// callsite: calls.go:212:19|2 flagstr "" flagval 0 score 16 mask 512 maskstr "passInlinableFuncToIndCallAdj"
// callsite: calls.go:212:19|calls.go:232:10|0 flagstr "" flagval 0 score 4 mask 0 maskstr ""
// <endcallsites>

	testenv.MustHaveGoRun(t)
	t.Parallel()

	const pkg = "example.com/pgo/devirtualize"

	// Add a go.mod so we have a consistent symbol names in this temp dir.
	goMod := fmt.Sprintf(`module %s
go 1.21
`, pkg)
	if err := os.WriteFile(filepath.Join(dir, "go.mod"), []byte(goMod), 0644); err != nil {
		t.Fatalf("error writing go.mod: %v", err)
	}

	// Run the test without PGO to ensure that the test assertions are

	}()
	go func() {
		close(c)
		r <- 0
	}()
	<-r
	<-r
}

func TestNoRaceChanCloseCap(t *testing.T) {
	c := make(chan int, 10)
	r := make(chan int, 10)
	go func() {
		r <- cap(c)
	}()
	go func() {
		close(c)
		r <- 0
	}()
	<-r
	<-r
}

func TestRaceChanCloseSend(t *testing.T) {
	compl := make(chan bool, 1)
	c := make(chan int, 10)
	go func() {