Index: webrtc-audio-processing-1.3/webrtc/modules/audio_processing/agc2/adaptive_mode_level_estimator.cc
===================================================================
--- webrtc-audio-processing-1.3.orig/webrtc/modules/audio_processing/agc2/adaptive_mode_level_estimator.cc
+++ webrtc-audio-processing-1.3/webrtc/modules/audio_processing/agc2/adaptive_mode_level_estimator.cc
@@ -39,6 +39,7 @@ float GetLevel(const VadLevelAnalyzer::R
       return vad_level.rms_dbfs;
       break;
     case LevelEstimatorType::kPeak:
+    default:
       return vad_level.peak_dbfs;
       break;
   }
Index: webrtc-audio-processing-1.3/webrtc/modules/audio_processing/audio_processing_impl.cc
===================================================================
--- webrtc-audio-processing-1.3.orig/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ webrtc-audio-processing-1.3/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -112,6 +112,7 @@ GainControl::Mode Agc1ConfigModeToInterf
     case Agc1Config::kAdaptiveDigital:
       return GainControl::kAdaptiveDigital;
     case Agc1Config::kFixedDigital:
+    default:
       return GainControl::kFixedDigital;
   }
 }
@@ -1852,6 +1853,7 @@ void AudioProcessingImpl::InitializeNois
               return NsConfig::SuppressionLevel::k21dB;
             default:
               RTC_NOTREACHED();
+              return NsConfig::SuppressionLevel::k21dB;  // Just to keep the compiler happy
           }
         };
 
Index: webrtc-audio-processing-1.3/webrtc/modules/audio_processing/include/audio_processing.cc
===================================================================
--- webrtc-audio-processing-1.3.orig/webrtc/modules/audio_processing/include/audio_processing.cc
+++ webrtc-audio-processing-1.3/webrtc/modules/audio_processing/include/audio_processing.cc
@@ -26,6 +26,7 @@ std::string NoiseSuppressionLevelToStrin
     case AudioProcessing::Config::NoiseSuppression::Level::kHigh:
       return "High";
     case AudioProcessing::Config::NoiseSuppression::Level::kVeryHigh:
+    default:
       return "VeryHigh";
   }
 }
@@ -38,6 +39,7 @@ std::string GainController1ModeToString(
     case AudioProcessing::Config::GainController1::Mode::kAdaptiveDigital:
       return "AdaptiveDigital";
     case AudioProcessing::Config::GainController1::Mode::kFixedDigital:
+    default:
       return "FixedDigital";
   }
 }
@@ -48,6 +50,7 @@ std::string GainController2LevelEstimato
     case AudioProcessing::Config::GainController2::LevelEstimator::kRms:
       return "Rms";
     case AudioProcessing::Config::GainController2::LevelEstimator::kPeak:
+    default:
       return "Peak";
   }
 }