From 75dc6884f5bc3851037e3d178fea5af96cc54ff6 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 19 Sep 2024 19:52:47 +0200
Subject: [PATCH] Use HAVE_BOEHMGC

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
---
 src/libexpr/primops.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index ed1597e5de36..8d53a1dfd71f 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -3136,7 +3136,11 @@ static void prim_zipAttrsWith(EvalState & state, const PosIdx pos, Value * * arg
         std::optional<ListBuilder> list;
     };
 
+#if HAVE_BOEHMGC
     std::map<Symbol, Item, std::less<Symbol>, traceable_allocator<std::pair<const Symbol, Item>>> attrsSeen;
+#else
+    std::map<Symbol, Item> attrsSeen;
+#endif
 
     state.forceFunction(*args[0], pos, "while evaluating the first argument passed to builtins.zipAttrsWith");
     state.forceList(*args[1], pos, "while evaluating the second argument passed to builtins.zipAttrsWith");