maxDiff := 0.10
	if testing.Short() {
		maxDiff = 0.40
	}

	compare := func(a, b time.Duration, maxDiff float64) error {
		if a <= 0 || b <= 0 {
			return fmt.Errorf("Expected both time reports to be positive")
		}

		if a < b {
			a, b = b, a
		}

		diff := float64(a-b) / float64(a)
		if diff > maxDiff {

func offs2lohi(offs int64) (lo, hi uintptr) {
	const longBits = SizeofLong * 8
	return uintptr(offs), uintptr(uint64(offs) >> (longBits - 1) >> 1) // two shifts to avoid false positive in vet
}

func Readv(fd int, iovs [][]byte) (n int, err error) {
	iovecs := make([]Iovec, 0, minIovec)
	iovecs = appendBytes(iovecs, iovs)
	n, err = readv(fd, iovecs)
	readvRacedetect(iovecs, n, err)

// nto returns the number of trailing ones.
func nto(x int64) int64 {
	return int64(ntz64(^x))
}

// logX returns logarithm of n base 2.
// n must be a positive power of 2 (isPowerOfTwoX returns true).
func log8(n int8) int64 {
	return int64(bits.Len8(uint8(n))) - 1
}
func log16(n int16) int64 {
	return int64(bits.Len16(uint16(n))) - 1
}
func log32(n int32) int64 {

		//
		// See go.dev/issue/33419.
		realStderr = os.Stderr
		os.Stderr = os.Stdout
	}

	if *parallel < 1 {
		fmt.Fprintln(os.Stderr, "testing: -parallel can only be given a positive integer")
		flag.Usage()
		m.exitCode = 2
		return
	}
	if *matchFuzz != "" && *fuzzCacheDir == "" {
		fmt.Fprintln(os.Stderr, "testing: -test.fuzzcachedir must be set if -test.fuzz is set")

				// fetched to one that can be).
				//
				// Instead of enumerating all of the possible errors, we'll just check
				// whether importFromModules returns nil for the package.
				// False-positives are ok: if we have a false-positive here, we'll do an
				// extra iteration of package loading this time, but we'll still
				// converge when the root set stops changing.
				//

//
// Examples:
//     5x -> 4x + 1x
//    10x -> 8x + 2x
//   120x -> 128x - 8x
//  -120x -> 8x - 128x
//
// We know that the rightmost bit of any positive value, once isolated, must either
// be a power of 2 (because it is a single bit) or 0 (if the original value is 0).
// In all of these rules we use a rightmost bit calculation to determine one operand

This is changed to avoid accidental successful test runs due to erroneous configuration.

=== Changes in the IDE integration

[[kotlin_dsl_plugins_catalogs_workaround]]
==== Workaround for false positive errors shown in Kotlin DSL `plugins {}` block using version catalog is not needed anymore

    /**
     * Returns `true` if adding [classToImport] import to the [file] might alter or break the
     * resolve of existing references in the file.
     *
     * N.B.: At the moment it might have both false positives and false negatives, since it does not
     * check all possible references.
     */
    private fun importBreaksExistingReferences(classToImport: ClassId, importAllInParent: Boolean): Boolean {

		return
	}
	if typ.Kind_&abi.KindMask == abi.Interface {
		// Interfaces are unfortunately inconsistently handled
		// when it comes to the type pointer, so it's easy to
		// produce a lot of false positives here.
		return
	}
	tp0 := s.typePointersOfType(typ, addr)
	tp1 := s.typePointersOf(addr, size)
	failed := false
	for {
		var addr0, addr1 uintptr
		tp0, addr0 = tp0.next(addr + size)