parse.y: invalid name as mere string

* parse.y (parser_peek_variable_name): treat invalid global, class,
  and instance variable names as mere strings rather than errors.
  [ruby-core:54885] [Bug #8375]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40635 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 4 deletions

diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index d6e42b12eb..05fedb7ca6 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -361,6 +361,17 @@ class TestParse < Test::Unit::TestCase
     assert_equal("foo 1 bar", "foo #$1 bar")
   end
 
+  def test_dstr_disallowd_variable
+    bug8375 = '[ruby-core:54885] [Bug #8375]'
+    %w[@ @1 @@. @@ @@1 @@. $ $%].each do |src|
+      src = '#'+src+' '
+      str = assert_nothing_raised(SyntaxError, "#{bug8375} #{src.dump}") do
+        break eval('"'+src+'"')
+      end
+      assert_equal(src, str, bug8375)
+    end
+  end
+
   def test_dsym
     assert_nothing_raised { eval(':""') }
   end
@@ -527,13 +538,14 @@ class TestParse < Test::Unit::TestCase
       )
     end
 
-    assert_raise(SyntaxError) do
-      eval %q(
+    assert_nothing_raised(SyntaxError) do
+      x = eval %q(
 <<FOO
 #$
 FOO
       )
     end
+    assert_equal "\#$\n", x
 
     assert_raise(SyntaxError) do
       eval %Q(
@@ -553,14 +565,15 @@ FOO
       )
     end
 
-    assert_raise(SyntaxError) do
-      eval %q(
+    assert_nothing_raised(SyntaxError) do
+      x = eval %q(
 <<FOO
 #$
 foo
 FOO
       )
     end
+    assert_equal "\#$\nfoo\n", x
 
     assert_nothing_raised do
       eval "x = <<""FOO\r\n1\r\nFOO"