From 77b3bf8bc26edef62182461227720186b70095f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Magiera?= <magik6k@gmail.com>
Date: Fri, 26 Jun 2020 20:32:47 +0200
Subject: [PATCH] Update FFI to 0.30.1

---
 chain/gen/mining.go | 11 +++++++++++
 extern/filecoin-ffi |  2 +-
 go.sum              |  1 +
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/chain/gen/mining.go b/chain/gen/mining.go
index ad8dfdf5b..bc809a888 100644
--- a/chain/gen/mining.go
+++ b/chain/gen/mining.go
@@ -150,6 +150,17 @@ func aggregateSignatures(sigs []crypto.Signature) (*crypto.Signature, error) {
 	}
 
 	aggSig := bls.Aggregate(blsSigs)
+	if aggSig == nil {
+		if len(sigs) > 0 {
+			return nil, xerrors.Errorf("bls.Aggregate returned nil with %d signatures", len(sigs))
+		}
+
+		return &crypto.Signature{
+			Type: crypto.SigTypeBLS,
+			Data: new(bls.Signature)[:],
+		}, nil
+	}
+
 	return &crypto.Signature{
 		Type: crypto.SigTypeBLS,
 		Data: aggSig[:],
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index ca281af0b..5342c7c97 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit ca281af0b6c00314382a75ae869e5cb22c83655b
+Subproject commit 5342c7c97d1a1df4650629d14f2823d52889edd9
diff --git a/go.sum b/go.sum
index 2b8a31ba6..f984e5816 100644
--- a/go.sum
+++ b/go.sum
@@ -257,6 +257,7 @@ github.com/filecoin-project/sector-storage v0.0.0-20200625154333-98ef8e4ef246/go
 github.com/filecoin-project/specs-actors v0.0.0-20200210130641-2d1fbd8672cf/go.mod h1:xtDZUB6pe4Pksa/bAJbJ693OilaC5Wbot9jMhLm3cZA=
 github.com/filecoin-project/specs-actors v0.3.0/go.mod h1:nQYnFbQ7Y0bHZyq6HDEuVlCPR+U3z5Q3wMOQ+2aiV+Y=
 github.com/filecoin-project/specs-actors v0.6.0/go.mod h1:dRdy3cURykh2R8O/DKqy8olScl70rmIS7GrB4hB1IDY=
+github.com/filecoin-project/specs-actors v0.6.1/go.mod h1:dRdy3cURykh2R8O/DKqy8olScl70rmIS7GrB4hB1IDY=
 github.com/filecoin-project/specs-actors v0.6.2-0.20200617175406-de392ca14121 h1:oRA+b4iN4H86xXDXbU3TOyvmBZp7//c5VqTc0oJ6nLg=
 github.com/filecoin-project/specs-actors v0.6.2-0.20200617175406-de392ca14121/go.mod h1:dRdy3cURykh2R8O/DKqy8olScl70rmIS7GrB4hB1IDY=
 github.com/filecoin-project/specs-storage v0.1.0 h1:PkDgTOT5W5Ao7752onjDl4QSv+sgOVdJbvFjOnD5w94=