From 4da38e50a096e9aa19a75149bcc9dbb6e1de901e Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 6 Mar 2017 10:29:00 +0200
Subject: Iterate over group members in test rule only if resolvable

---
 build2/target.txx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'build2/target.txx')

diff --git a/build2/target.txx b/build2/target.txx
index 7a222d7..f885e80 100644
--- a/build2/target.txx
+++ b/build2/target.txx
@@ -19,7 +19,14 @@ namespace build2
     do
     {
       g_ = resolve_group_members (r_->a_, search (*i_));
-      assert (g_.members != nullptr); // Group could not be resolved.
+
+      // Group could not be resolved.
+      //
+      if (g_.members == nullptr)
+      {
+        assert (r_->mode_ != members_mode::always);
+        return;
+      }
 
       if (g_.count != 0) // Skip empty see through groups.
       {
-- 
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