diff options
Diffstat (limited to 'libgo/go/crypto/rand/util.go')
| -rw-r--r-- | libgo/go/crypto/rand/util.go | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/libgo/go/crypto/rand/util.go b/libgo/go/crypto/rand/util.go index 50e5b16..0cd5e0e 100644 --- a/libgo/go/crypto/rand/util.go +++ b/libgo/go/crypto/rand/util.go @@ -98,12 +98,13 @@ func Prime(rand io.Reader, bits int) (p *big.Int, err error) { return } } - - return } -// Int returns a uniform random value in [0, max). +// Int returns a uniform random value in [0, max). It panics if max <= 0. func Int(rand io.Reader, max *big.Int) (n *big.Int, err error) { + if max.Sign() <= 0 { + panic("crypto/rand: argument to Int is <= 0") + } k := (max.BitLen() + 7) / 8 // b is the number of bits in the most significant byte of max. @@ -130,6 +131,4 @@ func Int(rand io.Reader, max *big.Int) (n *big.Int, err error) { return } } - - return } |