djvulibre/trunk/djvulibre-djvuport-stack-overflow.patch

   1 diff --git a/libdjvu/DjVuPort.cpp b/libdjvu/DjVuPort.cpp
   2 index 2b3e0d2..ede7f6b 100644
   3 --- a/libdjvu/DjVuPort.cpp
   4 +++ b/libdjvu/DjVuPort.cpp
   5 @@ -507,10 +507,19 @@ GP<DjVuFile>
   6  DjVuPortcaster::id_to_file(const DjVuPort * source, const GUTF8String &id)
   7  {
   8     GPList<DjVuPort> list;
   9 +
  10 +   if (!!opening_id && opening_id == id)
  11 +      G_THROW("DjVuPortcaster: recursive opening of the same file (corrupted file?)");
  12 +   else
  13 +      opening_id = id;
  14 +
  15     compute_closure(source, list, true);
  16     GP<DjVuFile> file;
  17     for(GPosition pos=list;pos;++pos)
  18        if ((file=list[pos]->id_to_file(source, id))) break;
  19 +
  20 +   opening_id = GUTF8String();
  21 +
  22     return file;
  23  }
  24
  25 diff --git a/libdjvu/DjVuPort.h b/libdjvu/DjVuPort.h
  26 index e2b3125..313dc2b 100644
  27 --- a/libdjvu/DjVuPort.h
  28 +++ b/libdjvu/DjVuPort.h
  29 @@ -484,6 +484,7 @@ private:
  30                         const DjVuPort *dst, int distance);
  31     void compute_closure(const DjVuPort *src, GPList<DjVuPort> &list,
  32                          bool sorted=false);
  33 +   GUTF8String opening_id;
  34  };
  35
  36