From 2beb929753d28604ccd40057fca295a11640e40e Mon Sep 17 00:00:00 2001
From: Rick van Schijndel <rol3517@gmail.com>
Date: Thu, 23 Jun 2022 21:11:08 +0200
Subject: [PATCH] eval-cache: cast rowId to correct type

Prevents errors when running with UBSan:

/nix/store/j5vhrywqmz1ixwhsmmjjxa85fpwryzh0-gcc-11.3.0/include/c++/11.3.0/bits/stl_pair.h:353:4: runtime error: load of value 229, which is not a valid value for type 'AttrType'
---
 src/libexpr/eval-cache.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libexpr/eval-cache.cc b/src/libexpr/eval-cache.cc
index d77b25898..dbfd8e70b 100644
--- a/src/libexpr/eval-cache.cc
+++ b/src/libexpr/eval-cache.cc
@@ -282,7 +282,7 @@ struct AttrDb
         auto queryAttribute(state->queryAttribute.use()(key.first)(symbols[key.second]));
         if (!queryAttribute.next()) return {};
 
-        auto rowId = (AttrType) queryAttribute.getInt(0);
+        auto rowId = (AttrId) queryAttribute.getInt(0);
         auto type = (AttrType) queryAttribute.getInt(1);
 
         switch (type) {