{"compiler_bootstrap", false, nil},
	{"cmd_go_bootstrap", true, nil},
	{"syntax(error", false, fmt.Errorf("parsing //go:build line: unexpected (")},
	{"(gc", false, fmt.Errorf("parsing //go:build line: missing )")},
	{"gc gc", false, fmt.Errorf("parsing //go:build line: unexpected tag")},
	{"(gc))", false, fmt.Errorf("parsing //go:build line: unexpected )")},
}

func TestBuildParser(t *testing.T) {
	for _, tt := range buildParserTests {

}

// val is the value type result of parsing.
// We don't keep a parse tree, just the value of the expression.
type val bool

// exprToken describes a single token in the input.
// Prefix operators define a prefix func that parses the
// upcoming value. Binary operators define an infix func
// that combines two values according to the operator.
// In that case, the parsing loop parses the two values.
type exprToken struct {

func newParser(goarch string) *Parser {
	architecture, ctxt := setArch(goarch)
	return NewParser(ctxt, architecture, nil)
}

// tryParse executes parse func in panicOnError=true context.
// parse is expected to call any parsing methods that may panic.
// Returns error gathered from recover; nil if no parse errors occurred.
//
// For unexpected panics, calls t.Fatal.
func tryParse(t *testing.T, parse func()) (err error) {
	panicOnError = true

	for _, v := range vectors {
		var p parser
		got := p.parseNumeric([]byte(v.in))
		ok := (p.err == nil)
		if ok != v.ok {
			if v.ok {
				t.Errorf("parseNumeric(%q): got parsing failure, want success", v.in)
			} else {
				t.Errorf("parseNumeric(%q): got parsing success, want failure", v.in)
			}
		}
		if ok && got != v.want {
			t.Errorf("parseNumeric(%q): got %d, want %d", v.in, got, v.want)
		}
	}
}

				return nil, nil, fmt.Errorf("parsing sample %s: %v", line, err)
			}
			if s.Value[1], err = strconv.ParseInt(value2, 0, 64); err != nil {
				return nil, nil, fmt.Errorf("parsing sample %s: %v", line, err)
			}

			switch pType {
			case "heap":
				const javaHeapzSamplingRate = 524288 // 512K
				if s.Value[0] == 0 {
					return nil, nil, fmt.Errorf("parsing sample %s: second value must be non-zero", line)

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

// Package pgo contains the compiler-agnostic portions of PGO profile handling.
// Notably, parsing pprof profiles and serializing/deserializing from a custom
// intermediate representation.
package pgo

import (
	"errors"
	"fmt"
	"internal/profile"
	"io"
	"sort"
)

        _[A B, /* ERROR missing type parameter name */ interface{}, C, interface{}] int
        _[A B, C interface{}, D, /* ERROR missing type parameter name */ interface{}] int
)

// function type parameters use the same parsing routine - just have a couple of tests

func _[A, B /* ERROR missing type constraint */ ]() {}

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

// Package pgo contains the compiler-agnostic portions of PGO profile handling.
// Notably, parsing pprof profiles and serializing/deserializing from a custom
// intermediate representation.
package pgo

// Profile contains the processed data from the PGO profile.
type Profile struct {

		if err != nil {
			return written, err
		}
	}

	if err := bw.Flush(); err != nil {
		return written, err
	}

	// No need to serialize TotalWeight, it can be trivially recomputed
	// during parsing.

	return written, nil

var cwdOnce sync.Once

// UncachedCwd returns the current working directory.
// Most callers should use Cwd, which caches the result for future use.
// UncachedCwd is appropriate to call early in program startup before flag parsing,
// because the -C flag may change the current directory.
func UncachedCwd() string {
	wd, err := os.Getwd()
	if err != nil {
		Fatalf("cannot determine current directory: %v", err)
	}
	return wd
}