From 1f4f6c9832d83e7ebd65ccf4e95cef358b3512c6 Mon Sep 17 00:00:00 2001
From: S-H-GAMELINKS <gamelinks007@gmail.com>
Date: Tue, 15 Nov 2022 13:24:08 +0900
Subject: Using UNDEF_P macro

---
 io_buffer.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'io_buffer.c')

diff --git a/io_buffer.c b/io_buffer.c
index cbf51250c4..dc9d613524 100644
--- a/io_buffer.c
+++ b/io_buffer.c
@@ -2384,7 +2384,7 @@ rb_io_buffer_read(VALUE self, VALUE io, size_t length, size_t offset)
     if (scheduler != Qnil) {
         VALUE result = rb_fiber_scheduler_io_read(scheduler, io, self, SIZET2NUM(length), SIZET2NUM(offset));
 
-        if (result != Qundef) {
+        if (!UNDEF_P(result)) {
             return result;
         }
     }
@@ -2501,7 +2501,7 @@ rb_io_buffer_pread(VALUE self, VALUE io, rb_off_t from, size_t length, size_t of
     if (scheduler != Qnil) {
         VALUE result = rb_fiber_scheduler_io_pread(scheduler, io, OFFT2NUM(from), self, SIZET2NUM(length), SIZET2NUM(offset));
 
-        if (result != Qundef) {
+        if (!UNDEF_P(result)) {
             return result;
         }
     }
@@ -2574,7 +2574,7 @@ rb_io_buffer_write(VALUE self, VALUE io, size_t length, size_t offset)
     if (scheduler != Qnil) {
         VALUE result = rb_fiber_scheduler_io_write(scheduler, io, self, SIZET2NUM(length), SIZET2NUM(offset));
 
-        if (result != Qundef) {
+        if (!UNDEF_P(result)) {
             return result;
         }
     }
@@ -2668,7 +2668,7 @@ rb_io_buffer_pwrite(VALUE self, VALUE io, rb_off_t from, size_t length, size_t o
     if (scheduler != Qnil) {
         VALUE result = rb_fiber_scheduler_io_pwrite(scheduler, io, OFFT2NUM(from), self, SIZET2NUM(length), SIZET2NUM(offset));
 
-        if (result != Qundef) {
+        if (!UNDEF_P(result)) {
             return result;
         }
     }
-- 
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