Program: 22540
Project: 22540
Buggy source:
private final Map<String,KernelWakelockStats> parseProcWakelocks(byte[] wlBuffer,int len){
  String name;
  int count;
  long totalTime;
  int startIndex, endIndex;
  int numUpdatedWlNames=0;
  int i;
  for (i=0; i < len && wlBuffer[i] != '\n' && wlBuffer[i] != '\0'; i++)   ;
  startIndex=endIndex=i + 1;
synchronized (this) {
    Map<String,KernelWakelockStats> m=mProcWakelockFileStats;
    sKernelWakelockUpdateVersion++;
    while (endIndex < len) {
      for (endIndex=startIndex; endIndex < len && wlBuffer[endIndex] != '\n' && wlBuffer[endIndex] != '\0'; endIndex++)       ;
      endIndex++;
      String[] nameStringArray=mProcWakelocksName;
      long[] wlData=mProcWakelocksData;
      boolean parsed=Process.parseProcLine(wlBuffer,startIndex,endIndex,PROC_WAKELOCKS_FORMAT,nameStringArray,wlData,null);
      name=nameStringArray[0];
      count=(int)wlData[1];
      totalTime=(wlData[2] + 500) / 1000;
      if (parsed && name.length() > 0) {
        if (!m.containsKey(name)) {
          m.put(name,new KernelWakelockStats(count,totalTime,sKernelWakelockUpdateVersion));
          numUpdatedWlNames++;
        }
 else {
          KernelWakelockStats kwlStats=m.get(name);
          if (kwlStats.mVersion == sKernelWakelockUpdateVersion) {
            kwlStats.mCount+=count;
            kwlStats.mTotalTime+=totalTime;
          }
 else {
            kwlStats.mCount=count;
            kwlStats.mTotalTime=totalTime;
            kwlStats.mVersion=sKernelWakelockUpdateVersion;
            numUpdatedWlNames++;
          }
        }
      }
      startIndex=endIndex;
    }
    if (m.size() != numUpdatedWlNames) {
      Iterator<KernelWakelockStats> itr=m.values().iterator();
      while (itr.hasNext()) {
        if (itr.next().mVersion != sKernelWakelockUpdateVersion) {
          itr.remove();
        }
      }
    }
    return m;
  }
}

Fixed version (ground truth):
private final Map<String,KernelWakelockStats> parseProcWakelocks(byte[] wlBuffer,int len){
  String name;
  int count;
  long totalTime;
  int startIndex, endIndex;
  int numUpdatedWlNames=0;
  int i;
  for (i=0; i < len && wlBuffer[i] != '\n' && wlBuffer[i] != '\0'; i++)   ;
  startIndex=endIndex=i + 1;
synchronized (this) {
    Map<String,KernelWakelockStats> m=mProcWakelockFileStats;
    sKernelWakelockUpdateVersion++;
    while (endIndex < len) {
      for (endIndex=startIndex; endIndex < len && wlBuffer[endIndex] != '\n' && wlBuffer[endIndex] != '\0'; endIndex++)       ;
      endIndex++;
      String[] nameStringArray=mProcWakelocksName;
      long[] wlData=mProcWakelocksData;
      for (int j=startIndex; j < endIndex; j++) {
        if ((wlBuffer[j] & 0x80) != 0)         wlBuffer[j]=(byte)'?';
      }
      boolean parsed=Process.parseProcLine(wlBuffer,startIndex,endIndex,PROC_WAKELOCKS_FORMAT,nameStringArray,wlData,null);
      name=nameStringArray[0];
      count=(int)wlData[1];
      totalTime=(wlData[2] + 500) / 1000;
      if (parsed && name.length() > 0) {
        if (!m.containsKey(name)) {
          m.put(name,new KernelWakelockStats(count,totalTime,sKernelWakelockUpdateVersion));
          numUpdatedWlNames++;
        }
 else {
          KernelWakelockStats kwlStats=m.get(name);
          if (kwlStats.mVersion == sKernelWakelockUpdateVersion) {
            kwlStats.mCount+=count;
            kwlStats.mTotalTime+=totalTime;
          }
 else {
            kwlStats.mCount=count;
            kwlStats.mTotalTime=totalTime;
            kwlStats.mVersion=sKernelWakelockUpdateVersion;
            numUpdatedWlNames++;
          }
        }
      }
      startIndex=endIndex;
    }
    if (m.size() != numUpdatedWlNames) {
      Iterator<KernelWakelockStats> itr=m.values().iterator();
      while (itr.hasNext()) {
        if (itr.next().mVersion != sKernelWakelockUpdateVersion) {
          itr.remove();
        }
      }
    }
    return m;
  }
}