From 26b8a1d8617d4d1178a82aa07fa74de69de2a438 Mon Sep 17 00:00:00 2001
From: Karl Bartel <karl.bartel@clabs.co>
Date: Mon, 24 Jun 2024 09:54:15 +0200
Subject: [PATCH] Set random in CeloBackend to ensure IsMerge

If this is not set, the PUSH0 instruction is not enabled, since both
IsMerge and IsShanghai have to be true to enable it. Not enabling it can
lead to reverts when calling core contracts from within op-geth (not via
RPC).
---
 contracts/celo_backend.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contracts/celo_backend.go b/contracts/celo_backend.go
index 361e33e6f7..8d3817164a 100644
--- a/contracts/celo_backend.go
+++ b/contracts/celo_backend.go
@@ -40,7 +40,11 @@ func (b *CeloBackend) CallContract(ctx context.Context, call ethereum.CallMsg, b
 	if blockNumber == nil {
 		blockNumber = common.Big0
 	}
-	blockCtx := vm.BlockContext{BlockNumber: blockNumber, Time: 0}
+	blockCtx := vm.BlockContext{
+		BlockNumber: blockNumber,
+		Time:        0,
+		Random:      &common.Hash{}, // Setting this is important since it is used to set IsMerge
+	}
 	txCtx := vm.TxContext{}
 	vmConfig := vm.Config{}