Warning compiling build-202505152050 on Linux

[Vimm2]

The Linux binary of build-202505152050 requires GLIBC 2.33 or 2.34 but I'm on RHEL 8 which only has 2.28. When I compile it shows this warning:

$ make
[ 50%] Building C object CMakeFiles/extract-xiso.dir/extract-xiso.c.o
/home/vimm/extract-xiso-build-202505152050/extract-xiso.c: In function ‘write_tree’:
/home/vimm/extract-xiso-build-202505152050/extract-xiso.c:1729:105: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   if (!err) err = avl_traverse_depth_first(in_avl->subdirectory, (traversal_callback)write_directory, (void*)in_context->xiso, k_prefix, 0);

While it builds, that warning makes me nervous. Doing a 32-bit build as dracc describes in #29 (comment) succeeds with no warnings.