From c2cf0b3c17b80996734501212bbede69b37f5f75 Mon Sep 17 00:00:00 2001
From: Alexander Polyakov <al.polyakov@vk.team>
Date: Fri, 3 Apr 2026 19:44:05 +0300
Subject: [PATCH] [k2] fix UB in register_kphp_on_oom_callback

---
 runtime-light/stdlib/system/system-functions.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/runtime-light/stdlib/system/system-functions.h b/runtime-light/stdlib/system/system-functions.h
index 2bc407c5fc..297cf0d02d 100644
--- a/runtime-light/stdlib/system/system-functions.h
+++ b/runtime-light/stdlib/system/system-functions.h
@@ -105,6 +105,7 @@ inline kphp::coro::task<> f$die(mixed v = 0) noexcept {
 template<typename F>
 bool f$register_kphp_on_oom_callback(F&& /*callback*/) {
   kphp::log::warning("called stub register_kphp_on_oom_callback");
+  return true;
 }
 
 template<typename F>