From b9b006c504e3f34ca92580b243bc55bfd60c2430 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sat, 1 Mar 2025 05:13:32 +0900
Subject: [PATCH] missing_wait: add short comment about P_PIDFD

---
 src/basic/missing_wait.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/basic/missing_wait.h b/src/basic/missing_wait.h
index 3965b5bdbfb..05648779e3f 100644
--- a/src/basic/missing_wait.h
+++ b/src/basic/missing_wait.h
@@ -5,6 +5,7 @@
 
 #include "macro.h"
 
+/* since glibc-2.36 */
 #ifndef P_PIDFD
 #  define P_PIDFD 3
 #else