From 65def6cc587fb54815fb502a78c234eb2583bc73 Mon Sep 17 00:00:00 2001
From: whyrusleeping <why@ipfs.io>
Date: Wed, 2 Oct 2019 12:00:08 -0600
Subject: [PATCH] handle getting state for genesis block

---
 chain/stmgr/stmgr.go    | 5 +++++
 node/impl/full/mpool.go | 1 +
 2 files changed, 6 insertions(+)

diff --git a/chain/stmgr/stmgr.go b/chain/stmgr/stmgr.go
index 98e386658..7361f363a 100644
--- a/chain/stmgr/stmgr.go
+++ b/chain/stmgr/stmgr.go
@@ -59,6 +59,11 @@ func (sm *StateManager) TipSetState(cids []cid.Cid) (cid.Cid, cid.Cid, error) {
 		return cid.Undef, cid.Undef, err
 	}
 
+	if ts.Height() == 0 {
+		// NB: Genesis block is a weird case here...
+		return ts.Blocks()[0].ParentStateRoot, ts.Blocks()[0].ParentMessageReceipts, nil
+	}
+
 	st, rec, err := sm.computeTipSetState(ctx, ts.Blocks(), nil)
 	if err != nil {
 		return cid.Undef, cid.Undef, err
diff --git a/node/impl/full/mpool.go b/node/impl/full/mpool.go
index ee9613b88..bd852a2f8 100644
--- a/node/impl/full/mpool.go
+++ b/node/impl/full/mpool.go
@@ -2,6 +2,7 @@ package full
 
 import (
 	"context"
+
 	"go.uber.org/fx"
 	"golang.org/x/xerrors"