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Alt stack should be purged between scripts.

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Found by bitcoind negative scripts.
This commit is contained in:
Owain G. Ainsworth 2014-03-14 17:22:57 +00:00
parent a5e7e9ebb6
commit c7d5102954
1 changed files with 3 additions and 0 deletions
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3
script.go
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@ -628,6 +628,9 @@ func (m *Script) Step() (done bool, err error) {
return false, StackErrMissingEndif
}
// alt stack doesn't persist.
_ = m.astack.DropN(m.astack.Depth())
m.numOps = 0 // number of ops is per script.
m.scriptoff = 0
if m.scriptidx == 0 && m.bip16 {