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vmConfig check for invalid tracer. #27002

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vmConfig check for invalid tracer. #27002

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8 changes: 7 additions & 1 deletion core/blockchain.go
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,7 @@ var (

errInsertionInterrupted = errors.New("insertion is interrupted")
errChainStopped = errors.New("blockchain is stopped")
errInvalidVmConfig = errors.New("vmConfig debug enabled without tracer")
)

const (
Expand Down Expand Up @@ -233,7 +234,12 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
if cacheConfig == nil {
cacheConfig = defaultCacheConfig
}

// Ensure a Trace is provided if we are running in debug mode
if vmConfig.Debug {
if vmConfig.Tracer == nil {
return nil, errInvalidVmConfig
}
}
// Open trie database with provided config
triedb := trie.NewDatabaseWithConfig(db, &trie.Config{
Cache: cacheConfig.TrieCleanLimit,
Expand Down