From 4ca5a5bc2991438602d3b1fdb56b91d2b425c52d Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 17 Jul 2020 17:17:55 +0200
Subject: Fix race in path/mtime assignment and file_rule::match()

---
 libbuild2/rule.cxx | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libbuild2/rule.cxx')

diff --git a/libbuild2/rule.cxx b/libbuild2/rule.cxx
index 4b2d69d..ac5b310 100644
--- a/libbuild2/rule.cxx
+++ b/libbuild2/rule.cxx
@@ -71,6 +71,9 @@ namespace build2
         // me, this file exists" situations (used, for example, for installed
         // stuff where we know it's there, just not exactly where).
         //
+        // See also path_target::path_mtime() for a potential race in this
+        // logic.
+        //
         mtime_target& mt (t.as<mtime_target> ());
 
         timestamp ts (mt.mtime ());
-- 
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