parse.y: no assigned but unused warnings in eval

* parse.y (local_push_gen): no assigned but unused variable warnings
  in eval as well as -e.  [Feature #7730] [ruby-core:51580]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38998 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 8 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index aa00dda6e4..91f3c06172 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jan 31 16:33:27 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (local_push_gen): no assigned but unused variable warnings
+	  in eval as well as -e.  [Feature #7730] [ruby-core:51580]
+
 Wed Jan 30 12:30:08 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* test/ruby/test_signal.rb (test_trap_puts): Fix typo. "sync"
diff --git a/parse.y b/parse.y
index d950199f0b..2e81b66ab2 100644
--- a/parse.y
+++ b/parse.y
@@ -9432,7 +9432,8 @@ local_push_gen(struct parser_params *parser, int inherit_dvars)
     local->prev = lvtbl;
     local->args = vtable_alloc(0);
     local->vars = vtable_alloc(inherit_dvars ? DVARS_INHERIT : DVARS_TOPSCOPE);
-    local->used = !(inherit_dvars && ifndef_ripper(e_option_supplied(parser))+0) &&
+    local->used = !(inherit_dvars &&
+		    (ifndef_ripper(compile_for_eval || e_option_supplied(parser))+0)) &&
 	RTEST(ruby_verbose) ? vtable_alloc(0) : 0;
     lvtbl = local;
 }
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index cf42475633..8f22bdaecc 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -554,6 +554,7 @@ class TestRubyOptions < Test::Unit::TestCase
     assert_in_out_err(["-we", "def foo\n  a=1\n :a\nend"], "", [], ["-e:2: warning: assigned but unused variable - a"], bug7408)
     feature7730 = '[ruby-core:51580]'
     assert_in_out_err(["-w", "-"], "a=1", [], ["-:1: warning: assigned but unused variable - a"], feature7730)
+    assert_in_out_err(["-w", "-"], "eval('a=1')", [], [], feature7730)
   end
 
   def test_shadowing_variable