merge revision(s) 41342,41359,41361: [Backport ruby#8341]

	test/ruby/test_proc.rb: tests for [Bug ruby#8341]
	* include/ruby/intern.h, proc.c (rb_method_call_with_block):
	  new function to invoke a Method object with a block passed
	  as an argument.

	* proc.c (bmcall): use the above function to avoid a block sharing.
	  [ruby-core:54626] [Bug ruby#8341]

	* test/ruby/test_proc.rb (TestProc#test_block_persist_between_calls):
	  run related tests.

	* test/ruby/test_proc.rb (TestProc#test_block_given_method_to_proc):
	  run test for r41359.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@41392 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: nagachika

ChangeLog

@@ -1,3 +1,20 @@
+Wed Jun 19 03:06:57 2013  Kazuki Tsujimoto  <[email protected]>
+
+	* test/ruby/test_proc.rb (TestProc#test_block_given_method_to_proc):
+	  run test for r41359.
+
+Wed Jun 19 03:06:57 2013  Kazuki Tsujimoto  <[email protected]>
+
+	* include/ruby/intern.h, proc.c (rb_method_call_with_block):
+	  new function to invoke a Method object with a block passed
+	  as an argument.
+
+	* proc.c (bmcall): use the above function to avoid a block sharing.
+	  [ruby-core:54626] [Bug #8341]
+
+	* test/ruby/test_proc.rb (TestProc#test_block_persist_between_calls):
+	  run related tests.
+
 Tue Jun 18 02:49:20 2013  NARUSE, Yui  <[email protected]>
 
 	* test/ruby/envutil.rb (assert_separately): stop_auto_run of

include/ruby/intern.h

@@ -393,6 +393,7 @@ VALUE rb_binding_new(void);
 VALUE rb_obj_method(VALUE, VALUE);
 VALUE rb_obj_is_method(VALUE);
 VALUE rb_method_call(int, VALUE*, VALUE);
+VALUE rb_method_call_with_block(int, VALUE *, VALUE, VALUE);
 int rb_mod_method_arity(VALUE, ID);
 int rb_obj_method_arity(VALUE, ID);
 VALUE rb_protect(VALUE (*)(VALUE), VALUE, int*);

proc.c

@@ -28,7 +28,7 @@ VALUE rb_cMethod;
 VALUE rb_cBinding;
 VALUE rb_cProc;
 
-static VALUE bmcall(VALUE, VALUE);
+static VALUE bmcall(VALUE, VALUE, int, VALUE *, VALUE);
 static int method_arity(VALUE);
 static int method_min_max_arity(VALUE, int *max);
 static ID attached;
@@ -1524,6 +1524,13 @@ method_clone(VALUE self)
 
 VALUE
 rb_method_call(int argc, VALUE *argv, VALUE method)
+{
+    VALUE proc = rb_block_given_p() ? rb_block_proc() : Qnil;
+    return rb_method_call_with_block(argc, argv, method, proc);
+}
+
+VALUE
+rb_method_call_with_block(int argc, VALUE *argv, VALUE method, VALUE pass_procval)
 {
     VALUE result = Qnil;	/* OK */
     struct METHOD *data;
@@ -1544,8 +1551,15 @@ rb_method_call(int argc, VALUE *argv, VALUE method)
     }
     if ((state = EXEC_TAG()) == 0) {
 	rb_thread_t *th = GET_THREAD();
+	rb_block_t *block = 0;
+
+	if (!NIL_P(pass_procval)) {
+	    rb_proc_t *pass_proc;
+	    GetProcPtr(pass_procval, pass_proc);
+	    block = &pass_proc->block;
+	}
 
-	PASS_PASSED_BLOCK_TH(th);
+	th->passed_block = block;
 	result = rb_vm_call(th, data->recv, data->id,  argc, argv, data->me, data->defined_class);
     }
     POP_TAG();
@@ -1989,11 +2003,10 @@ mlambda(VALUE method)
 }
 
 static VALUE
-bmcall(VALUE args, VALUE method)
+bmcall(VALUE args, VALUE method, int argc, VALUE *argv, VALUE passed_proc)
 {
     volatile VALUE a;
     VALUE ret;
-    int argc;
 
     if (CLASS_OF(args) != rb_cArray) {
 	args = rb_ary_new3(1, args);
@@ -2002,7 +2015,7 @@ bmcall(VALUE args, VALUE method)
     else {
 	argc = check_argc(RARRAY_LEN(args));
     }
-    ret = rb_method_call(argc, RARRAY_PTR(args), method);
+    ret = rb_method_call_with_block(argc, RARRAY_PTR(args), method, passed_proc);
     RB_GC_GUARD(a) = args;
     return ret;
 }

test/ruby/test_proc.rb

@@ -166,13 +166,52 @@ def block
     method(:m2).to_proc
   end
 
+  def m1(var)
+    var
+  end
+
+  def m_block_given?
+    m1(block_given?)
+  end
+
   # [yarv-dev:777] block made by Method#to_proc
   def test_method_to_proc
     b = block()
     assert_equal "OK", b.call
     assert_instance_of(Binding, b.binding, '[ruby-core:25589]')
   end
 
+  def test_block_given_method
+    m = method(:m_block_given?)
+    assert(!m.call, "without block")
+    assert(m.call {}, "with block")
+    assert(!m.call, "without block second")
+  end
+
+  def test_block_given_method_to_proc
+    bug8341 = '[Bug #8341]'
+    m = method(:m_block_given?).to_proc
+    assert(!m.call, "#{bug8341} without block")
+    assert(m.call {}, "#{bug8341} with block")
+    assert(!m.call, "#{bug8341} without block second")
+  end
+
+  def test_block_persist_between_calls
+    bug8341 = '[Bug #8341]'
+    o = Object.new
+    def o.m1(top=true)
+      if top
+        [block_given?, @m.call(false)]
+      else
+        block_given?
+      end
+    end
+    m = o.method(:m1).to_proc
+    o.instance_variable_set(:@m, m)
+    assert_equal([true, false], m.call {}, "#{bug8341} nested with block")
+    assert_equal([false, false], m.call, "#{bug8341} nested without block")
+  end
+
   def test_curry
     b = proc {|x, y, z| (x||0) + (y||0) + (z||0) }
     assert_equal(6, b.curry[1][2][3])

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.0.0"
 #define RUBY_RELEASE_DATE "2013-06-19"
-#define RUBY_PATCHLEVEL 229
+#define RUBY_PATCHLEVEL 230
 
 #define RUBY_RELEASE_YEAR 2013
 #define RUBY_RELEASE_MONTH 6