// IsDirect returns whether the given module provides a package directly
// imported by a package or test in the main module.
func (rs *Requirements) IsDirect(path string) bool {
	return rs.direct[path]
}

// A ModuleGraph represents the complete graph of module dependencies
// of a main module.
//
// If the main module supports module graph pruning, the graph does not include

			if _, ok, err := dirInModule(pkg, mainModulePrefix, modRoot, true); err != nil {
				return "", err
			} else if !ok {
				// This main module could contain the directory but doesn't. Other main
				// modules might contain the directory, so wait till we finish the loop
				// to see if another main module contains directory. But if not,
				// return an error.
				if len(mainModulePrefix) > len(pkgNotFoundLongestPrefix) {

}

// HasModRoot reports whether a main module is present.
// HasModRoot may return false even if Enabled returns true: for example, 'get'
// does not require a main module.
func HasModRoot() bool {
	Init()
	return modRoots != nil
}

// MustHaveModRoot checks that a main module or main modules are present,
// and calls base.Fatalf if there are no main modules.
func MustHaveModRoot() {
	Init()

					base.Fatalf("cannot use -fuzz flag on package outside the main module")
				}
			} else {
				if !mainMods.Contains("std") || !mainMods.InGorootSrc(module.Version{Path: "std"}) {
					base.Fatalf("cannot use -fuzz flag on package outside the main module")
				}
			}
		}
	}
	if testProfile() != "" && len(pkgs) != 1 {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Annotate Ref in Prog with C types by parsing gcc debug output.
// Conversion of debug output to Go types.

package main

import (
	"bytes"
	"debug/dwarf"
	"debug/elf"
	"debug/macho"
	"debug/pe"
	"encoding/binary"
	"errors"
	"flag"
	"fmt"
	"go/ast"
	"go/parser"
	"go/token"
	"internal/xcoff"
	"math"

	tg.tempFile("src/main1/main.go", "package main\nimport _ \"p2\"\nfunc main() {}\n")

	tg.run("list", "-f={{.Target}}", "p1")
	p1 := strings.TrimSpace(tg.getStdout())
	tg.run("list", "-f={{.Target}}", "p2")
	p2 := strings.TrimSpace(tg.getStdout())
	tg.run("list", "-f={{.Target}}", "main1")
	main1 := strings.TrimSpace(tg.getStdout())

	tg.run("install", "main1")

	tg.mustExist(main1)

				// could plausibly mean “downgrade away everything that depends on any
				// explicit version of the main module”, or “downgrade away the
				// package with the same path as the main module, found in a module
				// with a prefix of the main module's path”.
				//
				// However, neither of those behaviors would be consistent with the

	}
	f, err := bio.Open(lib.File)
	if err != nil {
		Exitf("cannot open file %s: %v", lib.File, err)
	}
	defer f.Close()
	defer func() {
		if pkg == "main" && !lib.Main {
			Exitf("%s: not package main", lib.File)
		}
	}()

	for i := 0; i < len(ARMAG); i++ {
		if c, err := f.ReadByte(); err == nil && c == ARMAG[i] {
			continue
		}

		/* load it as a regular file */

			dirs = append(dirs, dir)
		}
		files = append(files, fileDir{base: file, dir: dirIdx})

		// We can't use something that may be dead-code
		// eliminated from a binary here. proc.go contains
		// main and the scheduler, so it's not going anywhere.
		if i := strings.Index(name, "runtime/proc.go"); i >= 0 && unit.Lib.Pkg == "runtime" {
			d.dwmu.Lock()
			if gdbscript == "" {

// Copyright 2016 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

import "strings"

// Notes:
//  - Integer types live in the low portion of registers. Upper portions are junk.
//  - Boolean types use the low-order byte of a register. 0=false, 1=true.
//    Upper bytes are junk.