eth: ensure from<to when tracing chain (credits Chen Nan via bugbounty)
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@ -119,6 +119,9 @@ func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end rpc.Block
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if to == nil {
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return nil, fmt.Errorf("end block #%d not found", end)
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}
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if from.Number().Cmp(to.Number()) >= 0 {
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return nil, fmt.Errorf("end block (#%d) needs to come after start block (#%d)", end, start)
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}
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return api.traceChain(ctx, from, to, config)
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}
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