From 6e0cbc666b60515b5e201dd28855f5fe1de9a107 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 29 Nov 2021 11:20:50 +0100
Subject: createTempFile(): Mark file as CLOEEXEC

Fixes #5674.
---
 src/libutil/util.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index defb77a10..1b6467eb2 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -512,6 +512,7 @@ std::pair<AutoCloseFD, Path> createTempFile(const Path & prefix)
     AutoCloseFD fd(mkstemp((char *) tmpl.c_str()));
     if (!fd)
         throw SysError("creating temporary file '%s'", tmpl);
+    closeOnExec(fd.get());
     return {std::move(fd), tmpl};
 }
 
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