nobu	2016-12-14 13:35:28 +0900 (Wed, 14 Dec 2016)

  New Revision: 57073

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57073

  Log:
    parse.y: fix yyerror message
    
    * parse.y (parser_yyerror): show the error line even if the error
      is at the end.

  Modified files:
    trunk/parse.y
    trunk/test/ruby/test_parse.rb
Index: test/ruby/test_parse.rb
===================================================================
--- test/ruby/test_parse.rb	(revision 57072)
+++ test/ruby/test_parse.rb	(revision 57073)
@@ -953,6 +953,11 @@ x = __ENCODING__ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_parse.rb#L953
     end
   end
 
+  def test_yyerror_at_eol
+    assert_syntax_error("    0b", /\^/)
+    assert_syntax_error("    0b\n", /\^/)
+  end
+
 =begin
   def test_past_scope_variable
     assert_warning(/past scope/) {catch {|tag| eval("BEGIN{throw tag}; tap {a = 1}; a")}}
Index: parse.y
===================================================================
--- parse.y	(revision 57072)
+++ parse.y	(revision 57073)
@@ -5260,11 +5260,10 @@ parser_yyerror(struct parser_params *par https://github.com/ruby/ruby/blob/trunk/parse.y#L5260
     int i;
 
     p = lex_p;
-    while (lex_pbeg <= p) {
-	if (*p == '\n') break;
+    while (lex_pbeg < p) {
+	if (*(p-1) == '\n') break;
 	p--;
     }
-    p++;
 
     pe = lex_p;
     while (pe < lex_pend) {

--
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