From: Kenichi Handa <handa@m17n.org>
Date: Fri, 4 Aug 2000 02:05:39 +0000 (+0000)
Subject: (decode_coding_iso2022): More strict check for handling single
X-Git-Tag: emacs-pretest-21.0.90~2504
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=e7046a1877c5664dd122fd874b374c4a235865bb;p=emacs.git

(decode_coding_iso2022): More strict check for handling single
shifting.
---

diff --git a/src/coding.c b/src/coding.c
index d67e07687cd..6c251a583dd 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -1471,6 +1471,8 @@ decode_coding_iso2022 (coding, source, destination, src_bytes, dst_bytes)
 		goto label_invalid_code;
 	      charset = CODING_SPEC_ISO_DESIGNATION (coding, 2);
 	      ONE_MORE_BYTE (c1);
+	      if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0))
+		goto label_invalid_code;
 	      break;
 
 	    case 'O':		/* invocation of single-shift-3 */
@@ -1479,6 +1481,8 @@ decode_coding_iso2022 (coding, source, destination, src_bytes, dst_bytes)
 		goto label_invalid_code;
 	      charset = CODING_SPEC_ISO_DESIGNATION (coding, 3);
 	      ONE_MORE_BYTE (c1);
+	      if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0))
+		goto label_invalid_code;
 	      break;
 
 	    case '0': case '2':	case '3': case '4': /* start composition */