w.typ(sig.results.vars[0].typ)
		return
	}

	// multiple or named result(s)
	w.tuple(sig.results, false)
}

// subscript returns the decimal (utf8) representation of x using subscript digits.
func subscript(x uint64) string {
	const w = len("₀") // all digits 0...9 have the same utf8 width
	var buf [32 * w]byte
	i := len(buf)
	for {
		i -= w

		w.typ(sig.results.vars[0].typ)
		return
	}

	// multiple or named result(s)
	w.tuple(sig.results, false)
}

// subscript returns the decimal (utf8) representation of x using subscript digits.
func subscript(x uint64) string {
	const w = len("₀") // all digits 0...9 have the same utf8 width
	var buf [32 * w]byte
	i := len(buf)
	for {
		i -= w

func (err Error) Error() string {
	return fmt.Sprintf("%s: %s", err.Pos, err.Msg)
}

// FullError returns an error string like Error, buy it may contain
// type-checker internal details such as subscript indices for type
// parameters and more. Useful for debugging.
func (err Error) FullError() string {
	return fmt.Sprintf("%s: %s", err.Pos, err.Full)
}

		declData: declData,
		pkgIndex: make(map[*types.Package]map[string]uint64),
		typCache: make(map[uint64]types.Type),
		// Separate map for typeparams, keyed by their package and unique
		// name (name with subscript).
		tparamIndex: make(map[ident]*types.TypeParam),

		fake: fakeFileSet{
			fset:  fset,
			files: make(map[string]*fileInfo),
		},
	}
	defer p.fake.setLines() // set lines for files in fset