(decode_coding_sjis): Check the first byte rigidly.

diff --git a/src/coding.c b/src/coding.c
index 9da19e53c2e0739d84c921bc89bc5738be7c6faf..2353834b4ad418d1341a0d1e9d0199a7308e0ad0 100644 (file)
--- a/src/coding.c
+++ b/src/coding.c
@@ -4025,6 +4025,8 @@ decode_coding_sjis (coding)
        goto invalid_code;
       if (c < 0x80)
        charset = charset_roman;
+      else if (c == 0x80)
+       goto invalid_code;
       else
        {
          if (c >= 0xF0)