From 4f5103f778278c2172f23791a42e9465a0c19c20 Mon Sep 17 00:00:00 2001
From: penguin2233 <dm4.bade@gmail.com>
Date: Thu, 25 Jun 2026 21:30:34 +1000
Subject: [PATCH] fix crash on input not matching dictionary

---
 lib/sj4core/getcost.c  | 4 +++-
 lib/sj4core/mkjiritu.c | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/sj4core/getcost.c b/lib/sj4core/getcost.c
index f889ad8..9688c55 100644
--- a/lib/sj4core/getcost.c
+++ b/lib/sj4core/getcost.c
@@ -49,7 +49,9 @@ static void getcost_hira(SJ4_CONTEXT u_char* p, int* len) {
 int getcost(SJ4_CONTEXT u_char* p) {
 	char flg = TRUE;
 	int  i;
-	int  result;
+	int  result = 0;
+
+	if (!p) return result;
 
 	do {
 		if(p[codesize(*p)] == KANJISTREND) flg = FALSE;
diff --git a/lib/sj4core/mkjiritu.c b/lib/sj4core/mkjiritu.c
index e05be0a..dd32c7e 100644
--- a/lib/sj4core/mkjiritu.c
+++ b/lib/sj4core/mkjiritu.c
@@ -86,7 +86,7 @@ void mkjiritu(SJ4_CONTEXT int mode) {
 
 static void
 dic_mu(SJ4_CONTEXT int mode) {
-	u_char* tagp;
+	u_char* tagp = NULL;
 	DICTL*	dp;
 
 	for(dp = dictlist; dp; dp = dp->next) {