* parse.y (parser_read_escape): deny extra character escapes.

  [ruby-core:27228]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 52de93e8fe..2a05211d49 100644
--- a/parse.y
+++ b/parse.y
@@ -5593,6 +5593,7 @@ parser_read_escape(struct parser_params *parser, int flags,
 	    goto eof;
 	}
 	if ((c = nextc()) == '\\') {
+	    if (peek('u')) goto eof;
 	    return read_escape(flags|ESCAPE_META, encp) | 0x80;
 	}
 	else if (c == -1 || !ISASCII(c)) goto eof;
@@ -5608,6 +5609,7 @@ parser_read_escape(struct parser_params *parser, int flags,
       case 'c':
 	if (flags & ESCAPE_CONTROL) goto eof;
 	if ((c = nextc())== '\\') {
+	    if (peek('u')) goto eof;
 	    c = read_escape(flags|ESCAPE_CONTROL, encp);
 	}
 	else if (c == '?')