From 1aad510fb3cbf59e095fd12aa1132268a59cb15a Mon Sep 17 00:00:00 2001
From: Hiroki Noda <kubo39@gmail.com>
Date: Thu, 26 Aug 2021 21:46:07 +0900
Subject: [PATCH] Note that all of the code in preExecFunction must be
 async-signal-safe

---
 std/process.d | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/std/process.d b/std/process.d
index 68cc65cfa..43fb53ffc 100644
--- a/std/process.d
+++ b/std/process.d
@@ -2159,6 +2159,8 @@ struct Config
         /**
         A function that is called before `exec` in $(LREF spawnProcess).
         It returns `true` if succeeded and otherwise returns `false`.
+        Please note that the code in this function must only use
+        async-signal-safe functions.
         On Windows, this member is not available.
         */
         bool function() nothrow @nogc @safe preExecFunction;