  FT_Get_Renderer( FT_Library       library,
                   FT_Glyph_Format  format )
  {
    /* test for valid `library' delayed to FT_Lookup_Renderer() */

    return FT_Lookup_Renderer( library, format, 0 );
  }

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.