5 files changed, 8 insertions, 12 deletions
diff --git a/core/asm.go b/core/asm.go
index a86a2c44c..b2e47b5e9 100644
--- a/core/asm.go
+++ b/core/asm.go
@@ -61,6 +61,4 @@ func Disassemble(script []byte) (asm []string) {
 
 		pc.Add(pc, common.Big1)
 	}
-
-	return asm
 }
diff --git a/core/blockchain.go b/core/blockchain.go
index e740eb861..ecf8297cb 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -993,7 +993,7 @@ func (self *BlockChain) reorg(oldBlock, newBlock *types.Block) error {
 	// first reduce whoever is higher bound
 	if oldBlock.NumberU64() > newBlock.NumberU64() {
 		// reduce old chain
-		for oldBlock = oldBlock; oldBlock != nil && oldBlock.NumberU64() != newBlock.NumberU64(); oldBlock = self.GetBlock(oldBlock.ParentHash()) {
+		for ; oldBlock != nil && oldBlock.NumberU64() != newBlock.NumberU64(); oldBlock = self.GetBlock(oldBlock.ParentHash()) {
 			oldChain = append(oldChain, oldBlock)
 			deletedTxs = append(deletedTxs, oldBlock.Transactions()...)
 
@@ -1001,7 +1001,7 @@ func (self *BlockChain) reorg(oldBlock, newBlock *types.Block) error {
 		}
 	} else {
 		// reduce new chain and append new chain blocks for inserting later on
-		for newBlock = newBlock; newBlock != nil && newBlock.NumberU64() != oldBlock.NumberU64(); newBlock = self.GetBlock(newBlock.ParentHash()) {
+		for ; newBlock != nil && newBlock.NumberU64() != oldBlock.NumberU64(); newBlock = self.GetBlock(newBlock.ParentHash()) {
 			newChain = append(newChain, newBlock)
 		}
 	}
diff --git a/core/state/sync_test.go b/core/state/sync_test.go
index a2a1edbdb..715645c6c 100644
--- a/core/state/sync_test.go
+++ b/core/state/sync_test.go
@@ -145,7 +145,7 @@ func testIterativeStateSync(t *testing.T, batch int) {
 			if err != nil {
 				t.Fatalf("failed to retrieve node data for %x: %v", hash, err)
 			}
-			results[i] = trie.SyncResult{hash, data}
+			results[i] = trie.SyncResult{Hash: hash, Data: data}
 		}
 		if index, err := sched.Process(results); err != nil {
 			t.Fatalf("failed to process result #%d: %v", index, err)
@@ -175,7 +175,7 @@ func TestIterativeDelayedStateSync(t *testing.T) {
 			if err != nil {
 				t.Fatalf("failed to retrieve node data for %x: %v", hash, err)
 			}
-			results[i] = trie.SyncResult{hash, data}
+			results[i] = trie.SyncResult{Hash: hash, Data: data}
 		}
 		if index, err := sched.Process(results); err != nil {
 			t.Fatalf("failed to process result #%d: %v", index, err)
@@ -212,7 +212,7 @@ func testIterativeRandomStateSync(t *testing.T, batch int) {
 			if err != nil {
 				t.Fatalf("failed to retrieve node data for %x: %v", hash, err)
 			}
-			results = append(results, trie.SyncResult{hash, data})
+			results = append(results, trie.SyncResult{Hash: hash, Data: data})
 		}
 		// Feed the retrieved results back and queue new tasks
 		if index, err := sched.Process(results); err != nil {
@@ -251,7 +251,7 @@ func TestIterativeRandomDelayedStateSync(t *testing.T) {
 			if err != nil {
 				t.Fatalf("failed to retrieve node data for %x: %v", hash, err)
 			}
-			results = append(results, trie.SyncResult{hash, data})
+			results = append(results, trie.SyncResult{Hash: hash, Data: data})
 
 			if len(results) >= cap(results) {
 				break
@@ -289,7 +289,7 @@ func TestIncompleteStateSync(t *testing.T) {
 			if err != nil {
 				t.Fatalf("failed to retrieve node data for %x: %v", hash, err)
 			}
-			results[i] = trie.SyncResult{hash, data}
+			results[i] = trie.SyncResult{Hash: hash, Data: data}
 		}
 		// Process each of the state nodes
 		if index, err := sched.Process(results); err != nil {
diff --git a/core/vm/asm.go b/core/vm/asm.go
index b248838a7..d7dbde5e8 100644
--- a/core/vm/asm.go
+++ b/core/vm/asm.go
@@ -58,6 +58,4 @@ func Disassemble(script []byte) (asm []string) {
 
 		pc.Add(pc, common.Big1)
 	}
-
-	return
 }
diff --git a/core/vm/jit_util_test.go b/core/vm/jit_util_test.go
index 1f4cb2b16..2123efe59 100644
--- a/core/vm/jit_util_test.go
+++ b/core/vm/jit_util_test.go
@@ -77,7 +77,7 @@ func TestParser(t *testing.T) {
 				t.Fatal("empty output")
 			}
 			if output[0] != test.output {
-				t.Error("%v failed: expected %v but got %v", test.base+OpCode(i), output[0])
+				t.Errorf("%v failed: expected %v but got %v", test.base+OpCode(i), test.output, output[0])
 			}
 		}
 	}