}
	if errmsg, err := cover2.tearDown(*coverProfile, *gocoverdir); err != nil {
		fmt.Fprintf(os.Stderr, "%s: %v\n", errmsg, err)
		os.Exit(2)
	}
}

// coverage2 returns a rough "coverage percentage so far"
// number to support the testing.Coverage() function.
func coverage2() float64 {
	if cover2.mode == "" {
		return 0.0
	}
	return cover2.snapshotcov()

// coverage. A list may be of type []T or func() []T, where T is either Tag,
// Base, Script or Region. The returned Coverage derives the value for Bases
// from Tags if no func or slice for []Base is specified. For other unspecified
// types the returned Coverage will return nil for the respective methods.
func NewCoverage(list ...interface{}) Coverage {
	s := &coverage{}
	for _, x := range list {
		switch v := x.(type) {

	n := 0
	for _, c := range cov {
		n += bits.OnesCount8(c)
	}
	return n
}

var (
	coverageEnabled  = len(coverage()) > 0
	coverageSnapshot = make([]byte, len(coverage()))

	// _counters and _ecounters mark the start and end, respectively, of where
	// the 8-bit coverage counters reside in memory. They're known to cmd/link,
	// which specially assigns their addresses for this purpose.
	_counters, _ecounters [0]byte

// license that can be found in the LICENSE file.

package coverage

import (
	"internal/coverage/cfile"
	"io"
)

// initHook is invoked from main.init in programs built with -cover.
// The call is emitted by the compiler.
func initHook(istest bool) {
	cfile.InitHook(istest)
}

// WriteMetaDir writes a coverage meta-data file for the currently

// in cmd/compile/internal/typecheck
// to update builtin.go. This is not done automatically
// to avoid depending on having a working compiler binary.

//go:build ignore

package coverage

Jonathan Amsterdam <******@****.***> 1700059801 -0500

env GOCACHE=$WORK/cache

# Initial run with simple coverage.
go test -cover ./pkg1 ./pkg2 ./pkg3 ./pkg4
[!GOEXPERIMENT:coverageredesign] stdout 'pkg1	\[no test files\]'
[GOEXPERIMENT:coverageredesign] stdout 'pkg1		coverage: 0.0% of statements'
stdout 'pkg2	\S+	coverage: 0.0% of statements \[no tests to run\]'
stdout 'pkg3	\S+	coverage: 100.0% of statements'
stdout 'pkg4	\S+	coverage: \[no statements\]'

      "coverage" : {
        "per_week" : [ "linux" ]
      }
    }, {
      "testProject" : "mediumNative",
      "coverage" : {
        "per_week" : [ "linux" ]
      }
    }, {
      "testProject" : "multiNative",
      "coverage" : {
        "per_week" : [ "linux" ]
      }
    }, {
      "testProject" : "smallNative",
      "coverage" : {
        "per_week" : [ "linux" ]

// of coverage data (e.g. a coverage percentage for a given package or
// set of packages) and for writing data in the legacy test format
// emitted by "go test -coverprofile=<outfile>".
//
// The model for using these apis is to create a Formatter object,
// then make a series of calls to SetPackage and AddUnit passing in
// data read from coverage meta-data and counter-data files. E.g.
//

	  internal/coverage/encodecounter, internal/coverage/encodemeta;

	internal/coverage/cmerge
	< internal/coverage/cformat;

	internal/coverage, crypto/sha256, FMT
	< cmd/internal/cov/covcmd;

	encoding/json,
	runtime/debug,
	internal/coverage/calloc,
	internal/coverage/cformat,
	internal/coverage/decodecounter, internal/coverage/decodemeta,
	internal/coverage/encodecounter, internal/coverage/encodemeta,