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fix boundary check in PUSH

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This commit is contained in:
Guillaume Ballet 2021-11-20 09:12:57 +01:00
parent 15d98607f3
commit 5ca990184f
1 changed files with 5 additions and 1 deletions
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6
core/vm/instructions.go
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@ -971,7 +971,11 @@ func makePush(size uint64, pushByteSize int) executionFunc {
for ; count < 31 && !scope.Contract.IsCode(chunk*31+count); count++ { for ; count < 31 && !scope.Contract.IsCode(chunk*31+count); count++ {
} }
value[0] = byte(count) value[0] = byte(count)
copy(value[1:], scope.Contract.Code[chunk*31:(chunk+1)*31]) end := (chunk + 1) * 31
if end > uint64(len(scope.Contract.Code)) {
end = uint64(len(scope.Contract.Code))
}
copy(value[1:], scope.Contract.Code[chunk*31:end])
index := trieUtils.GetTreeKeyCodeChunk(scope.Contract.Address().Bytes(), uint256.NewInt(chunk)) index := trieUtils.GetTreeKeyCodeChunk(scope.Contract.Address().Bytes(), uint256.NewInt(chunk))
interpreter.evm.TxContext.Accesses.TouchAddressAndChargeGas(index, nil) interpreter.evm.TxContext.Accesses.TouchAddressAndChargeGas(index, nil)