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PushDataN with a 0 length is valid, we were too tight here.

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Found by bitcoind positive tests. (but of course that is noncanonical
anyway, it should be OP_0 ;).
This commit is contained in:
Owain G. Ainsworth 2014-03-14 19:22:42 +00:00
parent 42f6576b02
commit 299dcc2fad
1 changed files with 3 additions and 3 deletions
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6
script.go
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@ -864,7 +864,7 @@ func calcScriptHash(script []parsedOpcode, hashType byte, tx *btcwire.MsgTx, idx
// scriptUInt8 return the number stored in the first byte of a slice.
func scriptUInt8(script []byte) (uint, error) {
if len(script) <= 1 {
if len(script) < 1 {
return 0, StackErrShortScript
}
return uint(script[0]), nil
@ -872,7 +872,7 @@ func scriptUInt8(script []byte) (uint, error) {
// scriptUInt16 returns the number stored in the next 2 bytes of a slice.
func scriptUInt16(script []byte) (uint, error) {
if len(script) <= 2 {
if len(script) < 2 {
return 0, StackErrShortScript
}
// Yes this is little endian
@ -881,7 +881,7 @@ func scriptUInt16(script []byte) (uint, error) {
// scriptUInt32 returns the number stored in the first 4 bytes of a slice.
func scriptUInt32(script []byte) (uint, error) {
if len(script) <= 4 {
if len(script) < 4 {
return 0, StackErrShortScript
}
// Yes this is little endian