Hello, here is a patch that fix the bug I found. git fetch https://github.com/crownedgrouse/otp.git fix_io_noreturn_with_self_pid https://github.com/crownedgrouse/otp/compare/erlang:maint...fix_io_noreturn_with_self_pid https://github.com/crownedgrouse/otp/compare/erlang:maint...fix_io_noreturn_with_self_pid