some r2004 dwg's have invalid section_map_address (as well as last_section_address and second_header_address), overflowing the stream. e.g. to/2004/1/1344464555.dwg
of size 0x3d6e00, with section_map_address: 0xc16f00.

we know that the section type magic 0x41630e3b must appear at a 0x20 page boundary.

ODA fails with "Unexpected end of file", so failing looks ok
search for the Section Page Map backwards
This is a GitHub Issue
repo:libredwg
owner:LibreDWG
Title : search for the Section Page Map backwards
Issue date:

--- start body ---
some r2004 dwg's have invalid section_map_address (as well as last_section_address and second_header_address), overflowing the stream. e.g. to/2004/1/1344464555.dwg
of size 0x3d6e00, with section_map_address: 0xc16f00.

we know that the section type magic 0x41630e3b must appear at a 0x20 page boundary.

ODA fails with "Unexpected end of file", so failing looks ok
--- end body ---
