Program: 75113
Project: 75113
Buggy source:
private void drawImage(ImageSource imageSource,float x,float y,float width,float height,Color bgcolor){
  int originalWidth=imageSource.getWidth();
  int originalHeight=imageSource.getHeight();
  y=transformY(y);
  gSave();
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.print("String_Node_Str");
  out.print(originalWidth * 3);
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.print("String_Node_Str");
  out.print(originalWidth);
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.print(x);
  out.print("String_Node_Str");
  out.print(y);
  out.println("String_Node_Str");
  if (height == 0 || width == 0) {
    height=originalHeight;
    width=originalWidth;
  }
  out.println("String_Node_Str");
  out.print(width);
  out.print("String_Node_Str");
  out.print(height);
  out.println("String_Node_Str");
  out.print(originalWidth);
  out.print("String_Node_Str");
  out.print(originalHeight);
  out.println("String_Node_Str");
  out.print("String_Node_Str");
  out.print(originalWidth);
  out.print("String_Node_Str");
  out.print(originalHeight);
  out.print("String_Node_Str");
  out.print(0);
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  byte[] sb=new byte[originalHeight * originalWidth * 6];
  int offset=0;
  for (int i=0; i < originalHeight; i++) {
    if (bgcolor == null) {
      for (int j=0; j < originalWidth; j++) {
        int pixel=imageSource.getRGB(j,i);
        int red=(pixel & 0xff0000) >> 16;
        int green=(pixel & 0xff00) >> 8;
        int blue=pixel & 0xff;
        offset=toBytes(offset,sb,red);
        offset=toBytes(offset,sb,green);
        offset=toBytes(offset,sb,blue);
      }
    }
 else {
    }
  }
  out.println(new String(sb));
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  gRestore();
}

Fixed version (ground truth):
private void drawImage(ImageSource imageSource,float x,float y,float width,float height,Color bgcolor){
  int originalWidth=imageSource.getWidth();
  int originalHeight=imageSource.getHeight();
  y=transformY(y);
  gSave();
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.print("String_Node_Str");
  out.print(originalWidth * 3);
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.print("String_Node_Str");
  out.print(originalWidth);
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.print(x);
  out.print("String_Node_Str");
  out.print(y);
  out.println("String_Node_Str");
  if (height == 0 || width == 0) {
    height=originalHeight;
    width=originalWidth;
  }
  out.println("String_Node_Str");
  out.print(width);
  out.print("String_Node_Str");
  out.print(height);
  out.println("String_Node_Str");
  out.print(originalWidth);
  out.print("String_Node_Str");
  out.print(originalHeight);
  out.println("String_Node_Str");
  out.print("String_Node_Str");
  out.print(originalWidth);
  out.print("String_Node_Str");
  out.print(originalHeight);
  out.print("String_Node_Str");
  out.print(0);
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  byte[] sb=new byte[originalHeight * originalWidth * 6];
  int offset=0;
  for (int i=0; i < originalHeight; i++) {
    if (bgcolor == null) {
      for (int j=0; j < originalWidth; j++) {
        int pixel=imageSource.getRGB(j,i);
        int alpha=(pixel >> 24) & 0xff;
        int red=(pixel >> 16) & 0xff;
        int green=(pixel >> 8) & 0xff;
        int blue=pixel & 0xff;
        red=transferColor(alpha,red);
        green=transferColor(alpha,green);
        blue=transferColor(alpha,blue);
        offset=toBytes(offset,sb,red);
        offset=toBytes(offset,sb,green);
        offset=toBytes(offset,sb,blue);
      }
    }
 else {
    }
  }
  out.println(new String(sb));
  out.println("String_Node_Str");
  out.println("String_Node_Str");
  gRestore();
}