core: fix bad parent hash when jumping to genesis in setHead (#23162)

rjl493456442 · web-flow · commit bd566977e80f · 2021-07-06T10:32:26.000+03:00
diff --git a/core/headerchain.go b/core/headerchain.go
@@ -574,7 +574,7 @@ func (hc *HeaderChain) SetHead(head uint64, updateFn UpdateHeadBlocksCallback, d
 		if parent == nil {
 			parent = hc.genesisHeader
 		}
-		parentHash = hdr.ParentHash
+		parentHash = parent.Hash()
 
 		// Notably, since geth has the possibility for setting the head to a low
 		// height which is even lower than ancient head.

Original file line number	Diff line number	Diff line change
`@@ -574,7 +574,7 @@ func (hc *HeaderChain) SetHead(head uint64, updateFn UpdateHeadBlocksCallback, d`
`574`	`574`	`if parent == nil {`
`575`	`575`	`parent = hc.genesisHeader`
`576`	`576`	`}`
`577`		`- parentHash = hdr.ParentHash`
	`577`	`+ parentHash = parent.Hash()`
`578`	`578`
`579`	`579`	`// Notably, since geth has the possibility for setting the head to a low`
`580`	`580`	`// height which is even lower than ancient head.`