From 5164c4b2f63af1f0ef644cc3b0a88acbecd4c86a Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Sun, 18 Feb 2018 19:06:40 -0800
Subject: [PATCH] Fix GetCallersForAllBaseFunctions found by romix

---
 src/query_utils.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/query_utils.cc b/src/query_utils.cc
index 6a6b52fe..faf95cbb 100644
--- a/src/query_utils.cc
+++ b/src/query_utils.cc
@@ -274,10 +274,11 @@ std::vector<Use> GetCallersForAllBaseFunctions(QueryDatabase* db,
     queue.pop();
 
     AddRange(&callers, func.uses);
-    if (def)
-      EachWithGen<QueryFunc>(db->funcs, def->base, [&](QueryFunc& func1) {
+    if (const QueryFunc::Def* def1 = func.AnyDef()) {
+      EachWithGen<QueryFunc>(db->funcs, def1->base, [&](QueryFunc& func1) {
         queue.push(&func1);
       });
+    }
   }
 
   return callers;