From 3116502899eec4852e1ac780f4597b535377a6bc Mon Sep 17 00:00:00 2001
From: Kenichi Handa <handa@m17n.org>
Date: Mon, 5 Feb 2001 01:20:55 +0000
Subject: [PATCH] (CCL_WRITE_CHAR): Check if CH is valid or not.  If invalid,
 execute CCL_INVALID_CMD. (ccl_driver): If the CCL program is terminated
 because of CCL_STAT_INVALID_CMD, copy the remaining source data to the
 destination instead of throwing them away.

---
 src/ccl.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/ccl.c b/src/ccl.c
index f5f024bf8d6..45cc525112d 100644
--- a/src/ccl.c
+++ b/src/ccl.c
@@ -721,8 +721,10 @@ else
 		 multibyte form later.  */				\
 	      extra_bytes++;						\
 	  }								\
-	else								\
+	else if (CHAR_VALID_P (ch, 0))					\
 	  dst += CHAR_STRING (ch, dst);					\
+	else								\
+	  CCL_INVALID_CMD;						\
       }									\
     else								\
       CCL_SUSPEND (CCL_STAT_SUSPEND_BY_DST);				\
@@ -1781,6 +1783,16 @@ ccl_driver (ccl, source, destination, src_bytes, dst_bytes, consumed)
 	  bcopy (msg, dst, msglen);
 	  dst += msglen;
 	}
+      if (ccl->status == CCL_STAT_INVALID_CMD)
+	{
+	  /* Copy the remaining source data.  */
+	  int i = src_end - src;
+	  if (dst_bytes && (dst_end - dst) < i)
+	    i = dst_end - dst;
+	  bcopy (src, dst, i);
+	  src += i;
+	  dst += i;
+	}
     }
 
  ccl_finish:
-- 
2.39.5