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This commit is contained in:
Luke Parker
2022-11-02 22:39:39 -04:00
parent 2b503b6f42
commit f4d622a34c
1 changed files with 10 additions and 0 deletions
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10
substrate/tendermint/client/src/tendermint.rs
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@@ -176,6 +176,16 @@ impl<T: TendermintValidator> TendermintImport<T> {
&self,
block: &mut BlockImportParams<T::Block, BT>,
) -> Result<(), Error> {
if block.finalized {
if block.fork_choice != Some(ForkChoiceStrategy::Custom(false)) {
// Since we alw1ays set the fork choice, this means something else marked the block as
// finalized, which shouldn't be possible. Ensuring nothing else is setting blocks as
// finalized helps ensure our security
panic!("block was finalized despite not setting the fork choice");
}
return Ok(());
}
// Set the block as a worse choice
block.fork_choice = Some(ForkChoiceStrategy::Custom(false));