Define IO#read/write_nonblock with builtins.

IO#read/write_nonblock methods are defined in prelude.rb with
special private method __read/write_nonblock to reduce keyword
parameters overhead. We can move them into io.rb with builtin
functions.

1 files changed, 1 insertions, 0 deletions

diff --git a/inits.c b/inits.c
index 16569ad32a..3faa8b8c56 100644
--- a/inits.c
+++ b/inits.c
@@ -70,6 +70,7 @@ rb_call_inits(void)
 
     CALL(builtin);
 
+    CALL(IO_nonblock);
     CALL(ast);
     CALL(vm_trace);
 }