| Index: webrtc/modules/audio_coding/neteq/merge.cc | 
| diff --git a/webrtc/modules/audio_coding/neteq/merge.cc b/webrtc/modules/audio_coding/neteq/merge.cc | 
| index d50b66588a8d2e146905ea47a83a55bb4a2ada31..9efbe4fb9c613ae2c0b92e300a4a1e9012ed4053 100644 | 
| --- a/webrtc/modules/audio_coding/neteq/merge.cc | 
| +++ b/webrtc/modules/audio_coding/neteq/merge.cc | 
| @@ -158,6 +158,7 @@ size_t Merge::Process(int16_t* input, size_t input_length, | 
|  | 
| // Return new added length. |old_length| samples were borrowed from | 
| // |sync_buffer_|. | 
| +  RTC_DCHECK_GE(output_length, old_length); | 
| return output_length - old_length; | 
| } | 
|  | 
|  |