eth/protocols/eth: fix slice resize flaw (ethereum#22181)

dadeg · bulgakovk · commit f9bf8c095cb7 · 2021-01-26T13:59:57.000+03:00
diff --git a/eth/protocols/eth/broadcast.go b/eth/protocols/eth/broadcast.go
@@ -179,7 +179,7 @@ func (p *Peer) announceTransactions() {
 			queue = append(queue, hashes...)
 			if len(queue) > maxQueuedTxAnns {
 				// Fancy copy and resize to ensure buffer doesn't grow indefinitely
-				queue = queue[:copy(queue, queue[len(queue)-maxQueuedTxs:])]
+				queue = queue[:copy(queue, queue[len(queue)-maxQueuedTxAnns:])]
 			}
 
 		case <-done:

Original file line number	Diff line number	Diff line change
`@@ -179,7 +179,7 @@ func (p *Peer) announceTransactions() {`
`179`	`179`	`queue = append(queue, hashes...)`
`180`	`180`	`if len(queue) > maxQueuedTxAnns {`
`181`	`181`	`// Fancy copy and resize to ensure buffer doesn't grow indefinitely`
`182`		`- queue = queue[:copy(queue, queue[len(queue)-maxQueuedTxs:])]`
	`182`	`+ queue = queue[:copy(queue, queue[len(queue)-maxQueuedTxAnns:])]`
`183`	`183`	`}`
`184`	`184`
`185`	`185`	`case <-done:`