diff options
Diffstat (limited to 'libgo/go/math/big/ratconv.go')
| -rw-r--r-- | libgo/go/math/big/ratconv.go | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/libgo/go/math/big/ratconv.go b/libgo/go/math/big/ratconv.go index 4566ff4e39d..ef2b6750d0c 100644 --- a/libgo/go/math/big/ratconv.go +++ b/libgo/go/math/big/ratconv.go @@ -15,7 +15,7 @@ import ( ) func ratTok(ch rune) bool { - return strings.IndexRune("+-/0123456789.eE", ch) >= 0 + return strings.ContainsRune("+-/0123456789.eE", ch) } // Scan is a support routine for fmt.Scanner. It accepts the formats @@ -25,7 +25,7 @@ func (z *Rat) Scan(s fmt.ScanState, ch rune) error { if err != nil { return err } - if strings.IndexRune("efgEFGv", ch) < 0 { + if !strings.ContainsRune("efgEFGv", ch) { return errors.New("Rat.Scan: invalid verb") } if _, ok := z.SetString(string(tok)); !ok { @@ -88,6 +88,12 @@ func (z *Rat) SetString(s string) (*Rat, bool) { return nil, false } + // special-case 0 (see also issue #16176) + if len(z.a.abs) == 0 { + return z, true + } + // len(z.a.abs) > 0 + // correct exponent if ecorr < 0 { exp += int64(ecorr) @@ -178,7 +184,7 @@ func scanExponent(r io.ByteScanner, binExpOk bool) (exp int64, base int, err err } break // i > 0 } - digits = append(digits, byte(ch)) + digits = append(digits, ch) } // i > 0 => we have at least one digit |