SyntaxError message at iseq compile

* iseq.c (rb_iseq_compile_with_option): make the parser in mild
  error.
* load.c (rb_load_internal0): ditto.
* parse.y (yycompile0): return the error message within the error
  to be raised.  [Feature #11951]
* parse.y (parser_compile_error): accumulate error messages in the
  error_buffer.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54189 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 21 insertions, 0 deletions

diff --git a/test/ruby/test_iseq.rb b/test/ruby/test_iseq.rb
index f9123109f7..e0c5329edc 100644
--- a/test/ruby/test_iseq.rb
+++ b/test/ruby/test_iseq.rb
@@ -214,4 +214,25 @@ class TestISeq < Test::Unit::TestCase
       at_exit { assert_equal([:n, :x], Segfault.new.segfault.sort) }
     end;
   end
+
+  def test_syntax_error_message
+    feature11951 = '[Feature #11951]'
+
+    src, line = <<-'end;', __LINE__+1
+      def x@;end
+      def y@;end
+    end;
+    e1 = e2 = nil
+    m1 = EnvUtil.verbose_warning do
+      e1 = assert_raise(SyntaxError) do
+        eval(src, nil, __FILE__, line)
+      end
+    end
+    m2 = EnvUtil.verbose_warning do
+      e2 = assert_raise(SyntaxError) do
+        ISeq.new(src, __FILE__, __FILE__, line)
+      end
+    end
+    assert_equal([m1, e1.message], [m2, e2.message], feature11951)
+  end
 end