Hi,

After upgrade to the new version of OSX, BigSur, sysconf(_SC_OPEN_MAX) started to return unreasonably big number, - 9223372036854775807, - which leads to two problems:

1. This value obviously does not fit into int context->max_fds
2. Changing the type to proper long (sysconf(3) returns long) leads to the attempt to allocate 9223372036854775807 bytes during context creation

Looks like we have to limit the max_fds on OSX somehow.