parse.y: reject invalid codepoint

* parse.y (parser_tokadd_codepoint): reject invalid codepoint,
  surrogate blocks and surrogate pair, as well as mruby.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56956 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 7 deletions

diff --git a/test/ruby/test_unicode_escape.rb b/test/ruby/test_unicode_escape.rb
index a7ec3a8ecc..108cf804e2 100644
--- a/test/ruby/test_unicode_escape.rb
+++ b/test/ruby/test_unicode_escape.rb
@@ -264,12 +264,9 @@ EOS
      assert_raise(SyntaxError) { eval %q("\u{ 123 456}")}  # extra space
      assert_raise(SyntaxError) { eval %q("\u{123  456}")}  # extra space
 
-# The utf-8 encoding object currently does not object to codepoints
-# in the surrogate blocks, so these do not raise an error.
-#     assert_raise(SyntaxError) { "\uD800" }       # surrogate block
-#     assert_raise(SyntaxError) { "\uDCBA" }       # surrogate block
-#     assert_raise(SyntaxError) { "\uDFFF" }       # surrogate block
-#     assert_raise(SyntaxError) { "\uD847\uDD9A" } # surrogate pair
-
+     assert_raise(SyntaxError) { eval %q("\uD800") }       # surrogate block
+     assert_raise(SyntaxError) { eval %q("\uDCBA") }       # surrogate block
+     assert_raise(SyntaxError) { eval %q("\uDFFF") }       # surrogate block
+     assert_raise(SyntaxError) { eval %q("\uD847\uDD9A") } # surrogate pair
   end
 end