Handle duplicate funding transaction gracefully.

[rust-lightning] / fuzz / fuzz_targets / full_stack_target.rs

diff --git a/fuzz/fuzz_targets/full_stack_target.rs b/fuzz/fuzz_targets/full_stack_target.rs
index 8f7ec2df0a76013918e2ec7b154deceed7057cab..54cb838f857c654337a26e5511df66425d68954c 100644 (file)
--- a/fuzz/fuzz_targets/full_stack_target.rs
+++ b/fuzz/fuzz_targets/full_stack_target.rs
@@ -300,13 +300,21 @@ pub fn do_test(data: &[u8]) {
                                }
                        },
                        10 => {
-                               for funding_generation in  pending_funding_generation.drain(..) {
+                               for funding_generation in pending_funding_generation.drain(..) {
                                        let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: vec![TxOut {
                                                        value: funding_generation.1, script_pubkey: funding_generation.2,
                                                }] };
                                        let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
-                                       channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
-                                       pending_funding_signatures.insert(funding_output, tx);
+                                       let mut found_duplicate_txo = false;
+                                       for chan in channelmanager.list_channels() {
+                                               if chan.channel_id == funding_output.to_channel_id() {
+                                                       found_duplicate_txo = true;
+                                               }
+                                       }
+                                       if !found_duplicate_txo {
+                                               channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
+                                               pending_funding_signatures.insert(funding_output, tx);
+                                       }
                                }
                        },
                        11 => {