"routes" have a 4095 bytes limit under Linux

[corsch]

The builtin routes "2-to-16-max-4-direction-changes.route" and "2-to-32-max-5-direction-changes.route" are to big, and cause a freeze under Linux.

A workaround is to split the routes into smaller pieces. (< 4096 bytes)

split routes/2-to-16-max-4-direction-changes.route -l 810
This creates four files of 3223, 4050, 4050 and 395 bytes.

I've also tested a file with 4095 bytes, which will work.
As soon as a file reaches 4096 bytes, kwp will get stuck.

[xsoft]

Ive just want to report same issue
ls -al 2-to-16-max-4-direction-changes-part1.route
-rw-r--r-- 1 root root 4095 Mar 13 16:37 2-to-16-max-4-direction-changes-part1.route

That 4k files (4096 b) would fail, 4095b is fine.

[anrieff]

A simple fix for this issue is to close the file after count_lines of the routes file, and then reopen it.
I.e., replace the rewind (fp); on line 906 with fclose(fp); fp = fopen (routes_file, "r");

I believe the issue is caused by mixing fgets() and fgetws() on a single file instance, since count_lines uses the former, and fgetl uses the latter.