From e1223ad6a21d14cbc3f315c7ef4c47b2bbc04715 Mon Sep 17 00:00:00 2001
From: 2022118007 <100339835+EX3exp@users.noreply.github.com>
Date: Fri, 3 Jul 2026 12:40:14 +0900
Subject: [PATCH] Fix KoreanCVPhonemizer crashing when kocvS is null

---
 OpenUtau.Plugin.Builtin/KoreanCVPhonemizer.cs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/OpenUtau.Plugin.Builtin/KoreanCVPhonemizer.cs b/OpenUtau.Plugin.Builtin/KoreanCVPhonemizer.cs
index 3a9447701..08c0fc3af 100644
--- a/OpenUtau.Plugin.Builtin/KoreanCVPhonemizer.cs
+++ b/OpenUtau.Plugin.Builtin/KoreanCVPhonemizer.cs
@@ -192,6 +192,10 @@ private Result ConvertForCV(Note[] notes, string[] prevLyric, string[] thisLyric
             string thisMidVowelHead;
             string thisMidVowelTail;
 
+            if (kocvS == null) {
+                return GenerateResult(FindInOto(notes[0].lyric, notes[0])); // If kocvS is null, return the original lyric's phoneme
+            }
+
             int totalDuration = notes.Sum(n => n.duration);
             Note note = notes[0];
             bool isItNeedsFrontCV;
@@ -415,4 +419,4 @@ public override Result GenerateEndSound(Note[] notes, Note? prev, Note? next, No
             return GenerateResult(FindInOto($"{prevMidVowel} {endSound}", note));            
         }
     }
-}
\ No newline at end of file
+}