diff options
Diffstat (limited to 'src/encoding/hex/hex.go')
| -rw-r--r-- | src/encoding/hex/hex.go | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/encoding/hex/hex.go b/src/encoding/hex/hex.go index 5a8243ae80..f69abb2f7f 100644 --- a/src/encoding/hex/hex.go +++ b/src/encoding/hex/hex.go @@ -75,9 +75,6 @@ func DecodedLen(x int) int { return x / 2 } // If the input is malformed, Decode returns the number // of bytes decoded before the error. func Decode(dst, src []byte) (int, error) { - if len(dst) < DecodedLen(len(src)) { - return 0, errors.New("encoding/hex: output buffer too small") - } i, j := 0, 1 for ; j < len(src); j += 2 { p := src[j-1] @@ -91,6 +88,9 @@ func Decode(dst, src []byte) (int, error) { if b > 0x0f { return i, InvalidByteError(q) } + if i >= len(dst) { + return i, errors.New("encoding/hex: output buffer too small") + } dst[i] = (a << 4) | b i++ } |