From 60f09928d1fb8cb6c5e02b66616b170407d511f8 Mon Sep 17 00:00:00 2001
From: Taeer Bar-Yam <taeer@bar-yam.me>
Date: Mon, 24 Nov 2025 20:25:20 +0100
Subject: [PATCH] libexpr: move ExprLet::attrs data to arena as well

I missed this because I assumed all Exprs were recursed into by
bindVars, but ExprLet's ExprAttrs field is not really its own AST node,
so it doesn't get recursed into.
---
 src/libexpr/nixexpr.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libexpr/nixexpr.cc b/src/libexpr/nixexpr.cc
index 6c9aa26dd..fc8c71b07 100644
--- a/src/libexpr/nixexpr.cc
+++ b/src/libexpr/nixexpr.cc
@@ -504,6 +504,7 @@ void ExprCall::bindVars(EvalState & es, const std::shared_ptr<const StaticEnv> &
 
 void ExprLet::bindVars(EvalState & es, const std::shared_ptr<const StaticEnv> & env)
 {
+    attrs->moveDataToAllocator(es.mem.exprs.alloc);
     auto newEnv = [&]() -> std::shared_ptr<const StaticEnv> {
         auto newEnv = std::make_shared<StaticEnv>(nullptr, env, attrs->attrs->size());