|  | @@ -531,6 +531,9 @@ circuit_purpose_to_string(uint8_t purpose)
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				|  |  |      case CIRCUIT_PURPOSE_CONTROLLER:
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				|  |  |        return "Circuit made by controller";
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				|  |  |  
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				|  |  | +    case CIRCUIT_PURPOSE_PATH_BIAS_TESTING:
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				|  |  | +      return "Path-bias testing circuit";
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				|  |  | +
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				|  |  |      default:
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				|  |  |        tor_snprintf(buf, sizeof(buf), "UNKNOWN_%d", (int)purpose);
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				|  |  |        return buf;
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