* vm.c (invoke_block_from_c): fix unintentional block passing.

[ruby-dev:45071] [Bug #5832]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36685 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sun Aug 12 11:57:20 2012  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* vm.c (invoke_block_from_c): fix unintentional block passing.
+	  [ruby-dev:45071] [Bug #5832]
+
 Fri Aug 10 08:41:28 2012  Eric Hodel  <drbrain@segment7.net>
 
 	* gc.c (gc_malloc_allocated_size):  RDoc does not process macros, so

ext/-test-/bug-5832/bug.c

@@ -0,0 +1,14 @@
+#include <ruby.h>
+
+static VALUE
+bug_funcall_callback(VALUE self, VALUE obj)
+{
+    return rb_funcall(obj, rb_intern("callback"), 0);
+}
+
+void
+Init_bug(void)
+{
+    VALUE mBug = rb_define_module("Bug");
+    rb_define_module_function(mBug, "funcall_callback", bug_funcall_callback, 1);
+}

ext/-test-/bug-5832/extconf.rb

@@ -0,0 +1 @@
+create_makefile("-test-/bug-5832/bug")

test/-ext-/test_bug-5832.rb

@@ -0,0 +1,21 @@
+require '-test-/bug-5832/bug'
+
+class Test_BUG_5832 < Test::Unit::TestCase
+  def test_block_passing
+    bug5832 = '[ruby-dev:45071]'
+
+    c = Class.new do
+      define_method(:call_invoke_block_from_c) do
+        Bug.funcall_callback(self)
+      end
+
+      def callback
+        yield if block_given?
+      end
+    end
+
+    assert_nothing_raised(RuntimeError, bug5832) do
+      c.new.call_invoke_block_from_c { raise 'unreachable' }
+    end
+  end
+end

vm.c

@@ -604,7 +604,6 @@ invoke_block_from_c(rb_thread_t *th, const rb_block_t *block,
 		      cfp->sp + arg_size, iseq->local_size - arg_size,
 		      th->passed_me);
 	th->passed_me = 0;
-	th->passed_block = blockptr;
 
 	if (cref) {
 	    th->cfp->ep[-1] = (VALUE)cref;