From ef5d6200f09e5d349000974c70ad16e52004ef65 Mon Sep 17 00:00:00 2001
From: maki49 <1579492865@qq.com>
Date: Fri, 1 Sep 2023 23:51:50 +0800
Subject: [PATCH] fix an illegal call of get_ngk()

---
 source/module_psi/psi.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/module_psi/psi.cpp b/source/module_psi/psi.cpp
index 77df3a6263..26dbdb09a1 100644
--- a/source/module_psi/psi.cpp
+++ b/source/module_psi/psi.cpp
@@ -281,6 +281,7 @@ template <typename T, typename Device> int Psi<T, Device>::get_current_nbas() co
 
 template <typename T, typename Device> const int& Psi<T, Device>::get_ngk(const int ik_in) const
 {
+    if (!this->ngk) return this->nbasis;
     return this->ngk[ik_in];
 }