return "", err
	}
	if err := tmp.Close(); err != nil {
		os.Remove(tmp.Name())
		return "", err
	}
	return tmp.Name(), nil
}

// ReadFile reads the named file and returns its decoded contents.
func ReadFile(name string) ([]byte, error) {
	f, err := os.Open(name)
	if err != nil {
		return nil, err
	}
	defer f.Close()
	return io.ReadAll(base64.NewDecoder(base64.StdEncoding, f))

func (g *gcmAsm) NonceSize() int {
	return g.nonceSize
}

func (g *gcmAsm) Overhead() int {
	return g.tagSize
}

// sliceForAppend takes a slice and a requested number of bytes. It returns a
// slice with the contents of the given slice followed by that many bytes and a
// second slice that aliases into it and contains only the extra bytes. If the
// original slice has sufficient capacity then no allocation is performed.

func TestEmptyString(t *testing.T) {
	x, y := adjStringChunk()

	ss := x[objsize:] // change objsize to objsize-1 and the test passes
	fin := make(chan bool, 1)
	// set finalizer on string contents of y
	runtime.SetFinalizer(y, func(z *objtype) { fin <- true })
	runtime.GC()
	<-fin
	ssglobal = ss // keep 0-length string live until here
}

var ssglobal string

// Test for issue 7656.

// address, to its canonical text form.
//
// The canonical form of an IPv6 address is 8 colon-separated fields,
// where each field should be a hex value from 0 to ffff. This
// function does not verify the contents of each field.
//
// This function performs two transformations:
//   - The last 32 bits of an IPv6 address may be represented in
//     IPv4-style dotted quad form, as in 1:2:3:4:5:6:7.8.9.10. That

		updateIEEE = func(crc uint32, p []byte) uint32 {
			return slicingUpdate(crc, ieeeTable8, p)
		}
	}
}

// MakeTable returns a [Table] constructed from the specified polynomial.
// The contents of this [Table] must not be modified.
func MakeTable(poly uint32) *Table {
	switch poly {
	case IEEE:
		ieeeOnce.Do(ieeeInit)
		return IEEETable
	case Castagnoli:
		castagnoliOnce.Do(castagnoliInit)

	doc, err := ExtractDoc(content, name)
	if err != nil {
		panic(err)
	}
	return doc
}

// ExtractDoc extracts a section of a package doc comment from the
// provided contents of an analyzer package's doc.go file.
//
// A section is a portion of the comment between one heading and
// the next, using this form:
//
//	# Analyzer NAME
//
//	NAME: SUMMARY
//
//	Full description...

//go:build unix || js || wasip1

package net

import (
	"context"
	"internal/bytealg"
	"sync"
)

var onceReadProtocols sync.Once

// readProtocols loads contents of /etc/protocols into protocols map
// for quick access.
func readProtocols() {
	file, err := open("/etc/protocols")
	if err != nil {
		return
	}
	defer file.close()

[cgo] go run ../print_line_comments.go compiled_cgo_sources.txt
[cgo] stdout $GOPATH[/\\]src[/\\]m[/\\]cgo_hello_replace[/\\]cgo_hello_replace.go
[cgo] ! stdout $GOPATH[/\\]src[/\\]m[/\\]overlay[/\\]hello.c

# Change the contents of a file in the overlay and ensure that makes the target stale
env OLD_GOCACHE=$GOCACHE
env GOCACHE=$WORK/cache  # use a fresh cache so that multiple runs of the test don't interfere
go build -x -overlay overlay.json ./test_cache

}

// CounterVisitorFn describes a callback function invoked when writing
// coverage counter data.
type CounterVisitorFn func(pkid uint32, funcid uint32, counters []uint32) error

// Write writes the contents of the count-data file to the writer
// previously supplied to NewCoverageDataWriter. Returns an error
// if something went wrong somewhere with the write.

		}
		r := io.NewSectionReader(f, fh.tmpoff, fh.Size)
		return sectionReadCloser{r, f}, nil
	}
	return os.Open(fh.tmpfile)
}

// File is an interface to access the file part of a multipart message.
// Its contents may be either stored in memory or on disk.
// If stored on disk, the File's underlying concrete type will be an *os.File.
type File interface {
	io.Reader
	io.ReaderAt
	io.Seeker
	io.Closer
}