Fix lock/unlock order

1 files changed, 2 insertions, 1 deletions

diff --git a/libbuild2/cc/common.cxx b/libbuild2/cc/common.cxx
index c7ca7bc..2f55dcb 100644
--- a/libbuild2/cc/common.cxx
+++ b/libbuild2/cc/common.cxx
@@ -856,7 +856,6 @@ namespace build2
       }
 
       target_lock al (a != nullptr ? lock (act, *a, true) : target_lock ());
-      target_lock sl (s != nullptr ? lock (act, *s, true) : target_lock ());
 
       if (al && al.offset == target::offset_matched)
       {
@@ -864,6 +863,8 @@ namespace build2
         al.unlock ();
       }
 
+      target_lock sl (s != nullptr ? lock (act, *s, true) : target_lock ());
+
       if (sl && sl.offset == target::offset_matched)
       {
         assert ((*s)[act].rule == &file_rule::rule_match);