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-rw-r--r--build2/bin/rule.cxx4
1 files changed, 2 insertions, 2 deletions
diff --git a/build2/bin/rule.cxx b/build2/bin/rule.cxx
index c9e8b3e..a73ad3d 100644
--- a/build2/bin/rule.cxx
+++ b/build2/bin/rule.cxx
@@ -124,9 +124,9 @@ namespace build2
}
target_state lib_rule::
- perform (action act, target& xt)
+ perform (action act, const target& xt)
{
- lib& t (static_cast<lib&> (xt));
+ const lib& t (static_cast<const lib&> (xt));
const match_data& md (t.data<match_data> ());
const string& type (md.type);