return "binary"
	case 8:
		return "octal"
	case 10:
		return "decimal"
	case 16:
		return "hexadecimal"
	}
	panic("invalid base")
}

// invalidSep returns the index of the first invalid separator in x, or -1.
func invalidSep(x string) int {
	x1 := ' ' // prefix char, we only care if it's 'x'
	d := '.'  // digit, one of '_', '0' (a digit), or '.' (anything else)
	i := 0

	// a prefix counts as a digit

	case 'x':
		return "hexadecimal literal"
	case 'o', '0':
		return "octal literal"
	case 'b':
		return "binary literal"
	}
}

// invalidSep returns the index of the first invalid separator in x, or -1.
func invalidSep(x string) int {
	x1 := ' ' // prefix char, we only care if it's 'x'
	d := '.'  // digit, one of '_', '0' (a digit), or '.' (anything else)
	i := 0

	// a prefix counts as a digit

	case 'o', '0':
		return "octal literal"
	case 'b':
		return "binary literal"
	}
	return "decimal literal"
}

// invalidSep returns the index of the first invalid separator in x, or -1.
func invalidSep(x string) int {
	x1 := ' ' // prefix char, we only care if it's 'x'
	d := '.'  // digit, one of '_', '0' (a digit), or '.' (anything else)
	i := 0

	// a prefix counts as a digit
	if len(x) >= 2 && x[0] == '0' {

	_ = x[InvalidDotDotDotOperand-80]
	_ = x[InvalidDotDotDot-81]
	_ = x[UncalledBuiltin-82]
	_ = x[InvalidAppend-83]
	_ = x[InvalidCap-84]
	_ = x[InvalidClose-85]
	_ = x[InvalidCopy-86]
	_ = x[InvalidComplex-87]
	_ = x[InvalidDelete-88]
	_ = x[InvalidImag-89]
	_ = x[InvalidLen-90]
	_ = x[SwappedMakeArgs-91]
	_ = x[InvalidMake-92]
	_ = x[InvalidReal-93]
	_ = x[InvalidAssert-94]
	_ = x[ImpossibleAssert-95]

	_ = x[MisplacedDotDotDot-79]
	_ = x[InvalidDotDotDot-81]
	_ = x[UncalledBuiltin-82]
	_ = x[InvalidAppend-83]
	_ = x[InvalidCap-84]
	_ = x[InvalidClose-85]
	_ = x[InvalidCopy-86]
	_ = x[InvalidComplex-87]
	_ = x[InvalidDelete-88]
	_ = x[InvalidImag-89]
	_ = x[InvalidLen-90]
	_ = x[SwappedMakeArgs-91]
	_ = x[InvalidMake-92]
	_ = x[InvalidReal-93]
	_ = x[InvalidAssert-94]
	_ = x[ImpossibleAssert-95]

	switch r.URL.Path {
	case "/internalErr":
		http.Error(w, "webhook internal server error", http.StatusInternalServerError)
		return
	case "/invalidReq":
		w.WriteHeader(http.StatusSwitchingProtocols)
		w.Write([]byte("webhook invalid request"))
		return
	case "/invalidResp":
		w.Header().Set("Content-Type", "application/json")
		w.Write([]byte("webhook invalid response"))
	case "/disallow":

				return false
			}) {
				mode = value
			}
		}

		if mode == invalid {
			// avoid error if underlying type is invalid
			if isValid(under(x.typ)) {
				code := InvalidCap
				if id == _Len {
					code = InvalidLen
				}
				check.errorf(x, code, invalidArg+"%s for built-in %s", x, bin.name)
			}
			return
		}

		// record the signature before changing x.typ

				return false
			}) {
				mode = value
			}
		}

		if mode == invalid {
			// avoid error if underlying type is invalid
			if isValid(under(x.typ)) {
				code := InvalidCap
				if id == _Len {
					code = InvalidLen
				}
				check.errorf(x, code, invalidArg+"%s for built-in %s", x, bin.name)
			}
			return
		}

		// record the signature before changing x.typ

		"no key name":           "foo.admission.k8s.io",
		"empty key":             "",
	}
	for name, invalidKey := range testCases {
		err := attr.AddAnnotation(invalidKey, "value-foo")
		assert.Error(t, err)
		annotations = attr.getAnnotations(auditinternal.LevelMetadata)
		assert.Equal(t, annotations[invalidKey], "", name+": invalid pluginName is not allowed ")
	}

	// test all saved annotations
	assert.Equal(
		t,

	case nil:
		check.errorf(x, NonSliceableOperand, invalidOp+"cannot slice %s: %s has no core type", x, x.typ)
		x.mode = invalid
		return

	case *Basic:
		if isString(u) {
			if e.Slice3 {
				at := e.Max
				if at == nil {
					at = e // e.Index[2] should be present but be careful
				}
				check.error(at, InvalidSliceExpr, invalidOp+"3-index slice of string")
				x.mode = invalid
				return
			}