* eval.c (rb_eval): care that another thread replace NODE_DREGX_ONCE

to NODE_LIT.  [ruby-dev:22920]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5740 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Feb 17 01:35:28 2004  Tanaka Akira  <akr@m17n.org>
+
+	* eval.c (rb_eval): care that another thread replace NODE_DREGX_ONCE
+	  to NODE_LIT.  [ruby-dev:22920]
+
 Tue Feb 17 01:20:57 2004  Minero Aoki  <aamine@loveruby.net>
 
 	* lib/fileutils.rb: new module FileUtils::DryRun.

eval.c

@@ -3643,6 +3643,9 @@ rb_eval(self, n)
 		nd_set_type(node, NODE_LIT);
 		node->nd_lit = result;
 		break;
+              case NODE_LIT:
+                /* other thread may replace NODE_DREGX_ONCE to NODE_LIT */
+		goto again;
 	      case NODE_DXSTR:
 		result = rb_funcall(self, '`', 1, str);
 		break;