From 597276dd9af465ce77c8c654e3d004da3ea55377 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 4 Jan 2026 14:23:56 +0200
Subject: [PATCH] Fix -Wundef warning in transparent_tests.cpp

---
 test/unordered/transparent_tests.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/unordered/transparent_tests.cpp b/test/unordered/transparent_tests.cpp
index 8b755c92..2ed6ff63 100644
--- a/test/unordered/transparent_tests.cpp
+++ b/test/unordered/transparent_tests.cpp
@@ -1205,7 +1205,7 @@ template <class UnorderedMap> void test_map_non_transparent_erase(UnorderedMap*)
   BOOST_TEST_EQ(key::count_, key_count);
 }
 
-#if BOOST_UNORDERED_FOA_TESTS
+#ifdef BOOST_UNORDERED_FOA_TESTS
 typedef boost::unordered_flat_set<int, transparent_hasher,
   transparent_key_equal>
   transparent_unordered_set;