case 1:
			t.Go = c.uint8
		case 2:
			t.Go = c.uint16
		case 4:
			t.Go = c.uint32
		case 8:
			t.Go = c.uint64
		case 1 + signedDelta:
			t.Go = c.int8
		case 2 + signedDelta:
			t.Go = c.int16
		case 4 + signedDelta:
			t.Go = c.int32
		case 8 + signedDelta:
			t.Go = c.int64
		}

	case *dwarf.FloatType:

import (
	"context"
	"errors"
	"fmt"
	"go/build"
	"internal/diff"
	"io/fs"
	"maps"
	"os"
	"path"
	pathpkg "path"
	"path/filepath"
	"runtime"
	"slices"
	"sort"
	"strings"
	"sync"
	"sync/atomic"

	"cmd/go/internal/base"
	"cmd/go/internal/cfg"
	"cmd/go/internal/fsys"
	"cmd/go/internal/gover"
	"cmd/go/internal/imports"
	"cmd/go/internal/modfetch"
	"cmd/go/internal/modindex"

var depsuffix = []string{
	".s",
	".go",
}

// gentab records how to generate some trivial files.
// Files listed here should also be listed in ../distpack/pack.go's srcArch.Remove list.
var gentab = []struct {
	pkg  string // Relative to $GOROOT/src
	file string
	gen  func(dir, file string)
}{
	{"go/build", "zcgo.go", mkzcgo},
	{"cmd/go/internal/cfg", "zdefaultcc.go", mkzdefaultcc},

// For example, using "matching" to mean "whose name contains":
//
//	go test -run ''        # Run all tests.
//	go test -run Foo       # Run top-level tests matching "Foo", such as "TestFooBar".
//	go test -run Foo/A=    # For top-level tests matching "Foo", run subtests matching "A=".
//	go test -run /A=1      # For all top-level tests, run subtests matching "A=1".
//	go test -fuzz FuzzFoo  # Fuzz the target matching "FuzzFoo"
//

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

package modload

import (
	"context"
	"errors"
	"fmt"
	"maps"
	"os"
	"runtime"
	"runtime/debug"
	"slices"
	"strings"
	"sync"
	"sync/atomic"

	"cmd/go/internal/base"
	"cmd/go/internal/cfg"
	"cmd/go/internal/gover"
	"cmd/go/internal/mvs"
	"cmd/go/internal/par"

// importGo checks whether it can use the go command to find the directory for path.
// If using the go command is not appropriate, importGo returns errNoModules.
// Otherwise, importGo tries using the go command and reports whether that succeeded.
// Using the go command lets build.Import and build.Context.Import find code
// in Go modules. In the long term we want tools to use go/packages (currently golang.org/x/tools/go/packages),

var _ = setOf(
	"import1.go",      // types2 reports extra errors
	"initializerr.go", // types2 reports extra error
	"typecheck.go",    // types2 reports extra error at function call

	"fixedbugs/bug176.go", // types2 reports all errors (pref: types2)
	"fixedbugs/bug195.go", // types2 reports slight different errors, and an extra error
	"fixedbugs/bug412.go", // types2 produces a follow-on error

	base := srcfile
	base = strings.TrimSuffix(base, ".go")
	base = filepath.Base(base)
	fgo1 := creat(*objDir + base + ".cgo1.go")
	fgcc := creat(*objDir + base + ".cgo2.c")

	p.GoFiles = append(p.GoFiles, base+".cgo1.go")
	p.GccFiles = append(p.GccFiles, base+".cgo2.c")

	// Write Go output: Go input with rewrites of C.xxx to _C_xxx.

			},
			re: `
[0-9]+ [0-9]+ @( 0x[[:xdigit:]]+)+
#	0x[0-9a-f]+	runtime\.chanrecv1\+0x[0-9a-f]+	.*runtime/chan.go:[0-9]+
#	0x[0-9a-f]+	runtime/pprof\.blockChanRecv\+0x[0-9a-f]+	.*runtime/pprof/pprof_test.go:[0-9]+
#	0x[0-9a-f]+	runtime/pprof\.TestBlockProfile\+0x[0-9a-f]+	.*runtime/pprof/pprof_test.go:[0-9]+
`},
		{
			name: "chan send",
			f:    blockChanSend,
			stk: []string{
				"runtime.chansend1",

	line, err := f.ReadString('\n')
	if err != nil {
		Errorf(nil, "truncated object file: %s: %v", pn, err)
		return nil
	}

	if !strings.HasPrefix(line, "go object ") {
		if strings.HasSuffix(pn, ".go") {
			Exitf("%s: uncompiled .go source file", pn)
			return nil
		}

		if line == ctxt.Arch.Name {
			// old header format: just $GOOS
			Errorf(nil, "%s: stale object file", pn)
			return nil