From 20dd737a4a8c29fe25e0fc6442ec295c91b83049 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Fri, 5 Jan 2024 13:00:55 +0900
Subject: [PATCH] mruby-io (io_s_popen): remove `fflush(stdin)`

Flushing input I/O should be useless.
---
 mrbgems/mruby-io/src/io.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mrbgems/mruby-io/src/io.c b/mrbgems/mruby-io/src/io.c
index 1767f66ba..6b506c4aa 100644
--- a/mrbgems/mruby-io/src/io.c
+++ b/mrbgems/mruby-io/src/io.c
@@ -522,8 +522,6 @@ io_s_popen(mrb_state *mrb, mrb_value klass)
   }
 
   if (!doexec) {
-    // XXX
-    fflush(stdin);
     fflush(stdout);
     fflush(stderr);
   }