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Harden Marshal/Unmarshal logic for Change.SpentChildren.

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This commit is contained in:
Jonathan Moody 2022-05-24 09:00:09 -04:00 committed by Roy Lee
parent b06df3d750
commit 0241e18f42
1 changed files with 3 additions and 2 deletions
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5
claimtrie/change/change.go
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@ -78,9 +78,10 @@ func (c *Change) Marshal(enc *bytes.Buffer) error {
binary.BigEndian.PutUint32(temp[:4], uint32(len(c.SpentChildren)))
enc.Write(temp[:4])
for key := range c.SpentChildren {
binary.BigEndian.PutUint16(temp[:2], uint16(len(key))) // technically limited to 255; not sure we trust it
keySize := uint16(len(key))
binary.BigEndian.PutUint16(temp[:2], keySize) // technically limited to 255; not sure we trust it
enc.Write(temp[:2])
enc.WriteString(key)
enc.WriteString(key[:keySize])
}
} else {
binary.BigEndian.PutUint32(temp[:4], 0)