Add functions to interact with ASan and MSan, and some sample uses

webrtc/modules/audio_coding/codecs/audio_decoder.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/modules/audio_coding/codecs/audio_decoder.h"
 
 #include <assert.h>
 
+#include "webrtc/base/array_view.h"
 #include "webrtc/base/checks.h"
+#include "webrtc/base/sanitizer.h"
 #include "webrtc/base/trace_event.h"
 
 namespace webrtc {
 
 int AudioDecoder::Decode(const uint8_t* encoded, size_t encoded_len,
                          int sample_rate_hz, size_t max_decoded_bytes,
                          int16_t* decoded, SpeechType* speech_type) {
   TRACE_EVENT0("webrtc", "AudioDecoder::Decode");
+  rtc::MsanCheckInitialized(rtc::MakeArrayView(encoded, encoded_len));
   int duration = PacketDuration(encoded, encoded_len);
   if (duration >= 0 &&
       duration * Channels() * sizeof(int16_t) > max_decoded_bytes) {
     return -1;
   }
   return DecodeInternal(encoded, encoded_len, sample_rate_hz, decoded,
                         speech_type);
 }
 
 int AudioDecoder::DecodeRedundant(const uint8_t* encoded, size_t encoded_len,
                                   int sample_rate_hz, size_t max_decoded_bytes,
                                   int16_t* decoded, SpeechType* speech_type) {
   TRACE_EVENT0("webrtc", "AudioDecoder::DecodeRedundant");
+  rtc::MsanCheckInitialized(rtc::MakeArrayView(encoded, encoded_len));
   int duration = PacketDurationRedundant(encoded, encoded_len);
   if (duration >= 0 &&
       duration * Channels() * sizeof(int16_t) > max_decoded_bytes) {
     return -1;
   }
   return DecodeRedundantInternal(encoded, encoded_len, sample_rate_hz, decoded,
                                  speech_type);
 }
 
 int AudioDecoder::DecodeRedundantInternal(const uint8_t* encoded,
@@ skipping 42 matching lines @@
       return kSpeech;
     case 2:
       return kComfortNoise;
     default:
       assert(false);
       return kSpeech;
   }
 }
 
 }  // namespace webrtc