import "testing"

func TestGeneric[T any](t *testing.T) {}

-- cycleerr/cycleerr_test.go --
package cycleerr

import (
  _ "testdep_a"
  _ "testdep_cycle"
)

-- pkgdep/pkgdep.go --
package pkgdep

-- testdep_a/testdep_a.go --
package testdep_a

-- testdep_b/testdep_b.go --
package testdep_b

-- testdep_cycle/testdep_cycle.go --
package testdep_cycle

		return
	}

	if string(line) == "!<arch>\n" {
		// Archive file. Scan to __.PKGDEF.
		var name string
		if name, size, err = readGopackHeader(r); err != nil {
			return
		}

		// First entry should be __.PKGDEF.
		if name != "__.PKGDEF" {
			err = fmt.Errorf("go archive is missing __.PKGDEF")
			return
		}

		// Read first line of __.PKGDEF data, so that line
		// is once again the first line of the input.

			goto close
		}

		for _, e := range aro.Entries {
			if e.Type != archive.EntryPkgDef {
				continue
			}
			if verbose {
				fmt.Printf("__.PKGDEF # %s\n", file)
			}
			ar.a.AddEntry(archive.EntryPkgDef, "__.PKGDEF", 0, 0, 0, 0644, e.Size, io.NewSectionReader(f, e.Offset, e.Size))
			done = true
		}
	close:
		f.Close()
		if done {
			break
		}
	}
}

// in prior Go releases) for the package located in pkgDir.
//
// (We use the package's directory instead of its import path
// mainly to simplify handling of the packages in src/vendor
// and cmd/vendor.)
func lookupGorootExport(pkgDir string) (string, error) {
	f, ok := exportMap.Load(pkgDir)
	if !ok {
		var (
			listOnce   sync.Once
			exportPath string
			err        error
		)

	"fmt"
	"internal/xcoff"
	"io"
	"io/fs"
	"os"
	"strconv"
	"strings"
)

var (
	errBuildIDMalformed = fmt.Errorf("malformed object file")

	bangArch = []byte("!<arch>")
	pkgdef   = []byte("__.PKGDEF")
	goobject = []byte("go object ")
	buildid  = []byte("build id ")
)

// ReadFile reads the build ID from an archive or executable file.
func ReadFile(name string) (id string, err error) {

		CounterMode:        cmode,
		CounterGranularity: cgran,
	})
	if pkgid != -1 {
		if Meta.PkgMap == nil {
			Meta.PkgMap = make(map[int]int)
		}
		if _, ok := Meta.PkgMap[pkgid]; ok {
			return 0
		}
		// Record the real slot (position on meta-list) for this
		// package; we'll use the map to fix things up later on.
		Meta.PkgMap[pkgid] = slot
	}

	// ID zero is reserved as invalid.
	return uint32(slot + 1)

		// instantiations.
		p.Prefix = path
	} else {
		p.Prefix = objabi.PathToPrefix(path)
	}
	p.Syms = make(map[string]*Sym)
	pkgMap[path] = p

	return p
}

func PkgMap() map[string]*Pkg {
	return pkgMap
}

var nopkg = &Pkg{
	Syms: make(map[string]*Sym),
}

func (pkg *Pkg) Lookup(name string) *Sym {
	s, _ := pkg.LookupOK(name)
	return s
}

						fmt.Fprintf(os.Stderr, "warning: ignoring symlink %s\n", pkgDir)
					}
				}
				return nil
			}

			if !want {
				return filepath.SkipDir
			}
			// Stop at module boundaries.
			if (prune&pruneGoMod != 0) && pkgDir != root {
				if fi, err := os.Stat(filepath.Join(pkgDir, "go.mod")); err == nil && !fi.IsDir() {
					return filepath.SkipDir
				}

[!race] skip
[short] skip

mkdir $WORKDIR/tmp/pkg
go install -race -pkgdir=$WORKDIR/tmp/pkg std

-- go.mod --
module empty

go 1.16
-- pkg/pkg.go --

env GO111MODULE=off

# Regression test for golang.org/issue/21309: accept relative -pkgdir argument.

[short] skip

mkdir $WORK/gocache
env GOCACHE=$WORK/gocache