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chore(evm): add comment regarding RANDOM opcode #1520

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merged 4 commits into from
Dec 2, 2022
Merged

chore(evm): add comment regarding RANDOM opcode #1520

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9fbe153
fix: add random field to BlockContext using block header hash
austinchandra Nov 30, 2022
ebe1589
Merge branch 'main' of github.com:evmos/ethermint into austinchandra/…
fedekunze Dec 2, 2022
1cefad9
add comment
fedekunze Dec 2, 2022
0c4b67a
Merge branch 'main' into austinchandra/ENG-1512
fedekunze Dec 2, 2022
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4 changes: 4 additions & 0 deletions x/evm/keeper/state_transition.go
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,9 @@ func (k *Keeper) NewEVM(
tracer vm.EVMLogger,
stateDB vm.StateDB,
) evm.EVM {
// Use BlockHash for random field
random := common.BytesToHash(ctx.HeaderHash())

blockCtx := vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Expand All @@ -89,6 +92,7 @@ func (k *Keeper) NewEVM(
Time: big.NewInt(ctx.BlockHeader().Time.Unix()),
Difficulty: big.NewInt(0), // unused. Only required in PoW context
BaseFee: cfg.BaseFee,
Random: &random,
}

txCtx := core.NewEVMTxContext(msg)
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