diff -ruN kakasi-2.3.4.orig/lib/libk2.c kakasi-2.3.4/lib/libk2.c
--- kakasi-2.3.4.orig/lib/libk2.c	2003-04-25 16:00:16.000000000 +0900
+++ kakasi-2.3.4/lib/libk2.c	2003-04-25 16:02:28.000000000 +0900
@@ -140,7 +140,7 @@
     static struct k2rom_tbl *k2rom_ptr;
     struct k2rom_tbl *p;
     int i, clen, ylen;
-    char buffer[k2rom_buflen];
+    char buffer[k2rom_buflen + 1];
     unsigned char c1;
     int max_match, match_more;
     char *max_romaji;
diff -ruN kakasi-2.3.4.orig/src/k2.c kakasi-2.3.4/src/k2.c
--- kakasi-2.3.4.orig/src/k2.c	2003-04-25 16:00:16.000000000 +0900
+++ kakasi-2.3.4/src/k2.c	2003-04-25 16:02:28.000000000 +0900
@@ -140,7 +140,7 @@
     static struct k2rom_tbl *k2rom_ptr;
     struct k2rom_tbl *p;
     int i, clen, ylen;
-    char buffer[k2rom_buflen];
+    char buffer[k2rom_buflen + 1];
     unsigned char c1;
     int max_match, match_more;
     char *max_romaji;