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Merge #14513: Avoid 1 << 31 (UB) in calculation of SEQUENCE_LOCKTIME_DISABLE_FLAG

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bc60c615a5 Avoid 1 << 31 (UB) in calculation of SEQUENCE_LOCKTIME_DISABLE_FLAG (practicalswift)

Pull request description:

  Avoid `1 << 31` (UB) in calculation of `SEQUENCE_LOCKTIME_DISABLE_FLAG`.

  Context: https://github.com/bitcoin/bitcoin/pull/14510#issuecomment-431153707

Tree-SHA512: bdb4a913c6a82ff1a455ba67d3351f6408ff4116574329361644b483fea96b801fdc5c5659233856b591cd3a46ec669d3b5b438553e4240d7099c560eae2e2ae
This commit is contained in:
Pieter Wuille 2018-10-19 18:45:28 -07:00
commit b14db5abab
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src/primitives/transaction.h
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@ -73,7 +73,7 @@ public:
/* Below flags apply in the context of BIP 68*/
/* If this flag set, CTxIn::nSequence is NOT interpreted as a
* relative lock-time. */
static const uint32_t SEQUENCE_LOCKTIME_DISABLE_FLAG = (1 << 31);
static const uint32_t SEQUENCE_LOCKTIME_DISABLE_FLAG = (1U << 31);
/* If CTxIn::nSequence encodes a relative lock-time and this flag
* is set, the relative lock-time has units of 512 seconds,