From 8d0dfe5ab6df8a4521a3a5b659cb05ff8814f1eb Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 24 Aug 2017 09:18:29 +0200
Subject: Clean group members in reverse

---
 build2/algorithm.cxx | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/build2/algorithm.cxx b/build2/algorithm.cxx
index 72e6bda..864f90c 100644
--- a/build2/algorithm.cxx
+++ b/build2/algorithm.cxx
@@ -1447,16 +1447,16 @@ namespace build2
   perform_clean_group (action a, const target& xg)
   {
     const mtime_target& g (xg.as<mtime_target> ());
-    const group_view& gv (g.group_members (a));
 
     // Similar logic to clean_extra() above.
     //
     target_state r (target_state::unchanged);
+
     if (cast_true<bool> (g[var_clean]))
     {
-      for (size_t i (0); i != gv.count; ++i)
+      for (group_view gv (g.group_members (a)); gv.count != 0; --gv.count)
       {
-        if (const target* m = gv.members[i])
+        if (const target* m = gv.members[gv.count - 1])
         {
           if (rmfile (m->as<file> ().path (), *m))
             r |= target_state::changed;
-- 
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