Program: 154048
Project: 154048
Buggy source:
public void decodeNextScanline(byte[] buffer,int lineOffset,int bitOffset){
  int bits=0, code=0, isT=0;
  int current, entry, twoBits;
  boolean isWhite=true;
  int dstEnd=0;
  changingElemSize=0;
  while (bitOffset < w) {
    while (isWhite) {
      current=nextNBits(10);
      entry=white[current];
      isT=entry & 0x0001;
      bits=(entry >>> 1) & 0x0f;
      if (bits == 12) {
        twoBits=nextLesserThan8Bits(2);
        current=((current << 2) & 0x000c) | twoBits;
        entry=additionalMakeup[current];
        bits=(entry >>> 1) & 0x07;
        code=(entry >>> 4) & 0x0fff;
        bitOffset+=code;
        updatePointer(4 - bits);
      }
 else       if (bits == 0) {
        throw new Error(JaiI18N.getString("String_Node_Str"));
      }
 else       if (bits == 15) {
        updatePointer(12);
        return;
      }
 else {
        code=(entry >>> 5) & 0x07ff;
        bitOffset+=code;
        updatePointer(10 - bits);
        if (isT == 0) {
          isWhite=false;
          currChangingElems[changingElemSize++]=bitOffset;
        }
      }
    }
    if (bitOffset == w) {
      if (compression == 2) {
        advancePointer();
      }
      break;
    }
    while (isWhite == false) {
      current=nextLesserThan8Bits(4);
      entry=initBlack[current];
      isT=entry & 0x0001;
      bits=(entry >>> 1) & 0x000f;
      code=(entry >>> 5) & 0x07ff;
      if (code == 100) {
        current=nextNBits(9);
        entry=black[current];
        isT=entry & 0x0001;
        bits=(entry >>> 1) & 0x000f;
        code=(entry >>> 5) & 0x07ff;
        if (bits == 12) {
          updatePointer(5);
          current=nextLesserThan8Bits(4);
          entry=additionalMakeup[current];
          bits=(entry >>> 1) & 0x07;
          code=(entry >>> 4) & 0x0fff;
          setToBlack(buffer,lineOffset,bitOffset,code);
          bitOffset+=code;
          updatePointer(4 - bits);
        }
 else         if (bits == 15) {
          updatePointer(12);
          return;
        }
 else {
          setToBlack(buffer,lineOffset,bitOffset,code);
          bitOffset+=code;
          updatePointer(9 - bits);
          if (isT == 0) {
            isWhite=true;
            currChangingElems[changingElemSize++]=bitOffset;
          }
        }
      }
 else       if (code == 200) {
        current=nextLesserThan8Bits(2);
        entry=twoBitBlack[current];
        code=(entry >>> 5) & 0x07ff;
        bits=(entry >>> 1) & 0x0f;
        setToBlack(buffer,lineOffset,bitOffset,code);
        bitOffset+=code;
        updatePointer(2 - bits);
        isWhite=true;
        currChangingElems[changingElemSize++]=bitOffset;
      }
 else {
        setToBlack(buffer,lineOffset,bitOffset,code);
        bitOffset+=code;
        updatePointer(4 - bits);
        isWhite=true;
        currChangingElems[changingElemSize++]=bitOffset;
      }
    }
    if (bitOffset == w) {
      if (compression == 2) {
        advancePointer();
      }
      break;
    }
  }
  currChangingElems[changingElemSize++]=bitOffset;
}

Fixed version (ground truth):
public void decodeNextScanline(byte[] buffer,int lineOffset,int bitOffset){
  int bits=0, code=0, isT=0;
  int current, entry, twoBits;
  boolean isWhite=true;
  int dstEnd=0;
  changingElemSize=0;
  while (bitOffset < w) {
    while (isWhite) {
      current=nextNBits(10);
      entry=white[current];
      isT=entry & 0x0001;
      bits=(entry >>> 1) & 0x0f;
      if (bits == 12) {
        twoBits=nextLesserThan8Bits(2);
        current=((current << 2) & 0x000c) | twoBits;
        entry=additionalMakeup[current];
        bits=(entry >>> 1) & 0x07;
        code=(entry >>> 4) & 0x0fff;
        bitOffset+=code;
        updatePointer(4 - bits);
      }
 else       if (bits == 0) {
        throw new RuntimeException(JaiI18N.getString("String_Node_Str"));
      }
 else       if (bits == 15) {
        updatePointer(12);
        return;
      }
 else {
        code=(entry >>> 5) & 0x07ff;
        bitOffset+=code;
        updatePointer(10 - bits);
        if (isT == 0) {
          isWhite=false;
          currChangingElems[changingElemSize++]=bitOffset;
        }
      }
    }
    if (bitOffset == w) {
      if (compression == 2) {
        advancePointer();
      }
      break;
    }
    while (isWhite == false) {
      current=nextLesserThan8Bits(4);
      entry=initBlack[current];
      isT=entry & 0x0001;
      bits=(entry >>> 1) & 0x000f;
      code=(entry >>> 5) & 0x07ff;
      if (code == 100) {
        current=nextNBits(9);
        entry=black[current];
        isT=entry & 0x0001;
        bits=(entry >>> 1) & 0x000f;
        code=(entry >>> 5) & 0x07ff;
        if (bits == 12) {
          updatePointer(5);
          current=nextLesserThan8Bits(4);
          entry=additionalMakeup[current];
          bits=(entry >>> 1) & 0x07;
          code=(entry >>> 4) & 0x0fff;
          setToBlack(buffer,lineOffset,bitOffset,code);
          bitOffset+=code;
          updatePointer(4 - bits);
        }
 else         if (bits == 15) {
          updatePointer(12);
          return;
        }
 else {
          setToBlack(buffer,lineOffset,bitOffset,code);
          bitOffset+=code;
          updatePointer(9 - bits);
          if (isT == 0) {
            isWhite=true;
            currChangingElems[changingElemSize++]=bitOffset;
          }
        }
      }
 else       if (code == 200) {
        current=nextLesserThan8Bits(2);
        entry=twoBitBlack[current];
        code=(entry >>> 5) & 0x07ff;
        bits=(entry >>> 1) & 0x0f;
        setToBlack(buffer,lineOffset,bitOffset,code);
        bitOffset+=code;
        updatePointer(2 - bits);
        isWhite=true;
        currChangingElems[changingElemSize++]=bitOffset;
      }
 else {
        setToBlack(buffer,lineOffset,bitOffset,code);
        bitOffset+=code;
        updatePointer(4 - bits);
        isWhite=true;
        currChangingElems[changingElemSize++]=bitOffset;
      }
    }
    if (bitOffset == w) {
      if (compression == 2) {
        advancePointer();
      }
      break;
    }
  }
  currChangingElems[changingElemSize++]=bitOffset;
}