diff -r 3c184218462d -r 9db4cc815ebc src/compiler/NameBinding.cpp
--- a/src/compiler/NameBinding.cpp	Sun Jan 06 13:52:21 2013 -0800
+++ b/src/compiler/NameBinding.cpp	Sun Jan 06 13:56:56 2013 -0800
@@ -859,7 +859,7 @@
             // Imports automatically go into the importScope. For now, we
             // error if there are any duplicate symbols entered into the
             // importScope.
-            if (Symbol *sym = unit_->importScope()->localLookup(path->name)) {
+            if (unit_->importScope()->localLookup(path->name)) {
                 cc_.reportError(node->pos(), Message_DuplicateImport, path->name->chars());
                 return;
             }