merges r23616 from trunk into ruby_1_9_1.

--
* cont.c (cont_capture, fiber_store): reraise transferred error.

* cont.c (fiber_switch): transfers dead fiber error to the previouse
  or root fiber if the current fiber is dead.  [ruby-core:23651]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@23766 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Mon Jun  1 11:21:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* cont.c (cont_capture, fiber_store): reraise transferred error.
+
+	* cont.c (fiber_switch): transfers dead fiber error to the previouse
+	  or root fiber if the current fiber is dead.  [ruby-core:23651]
+
 Mon Jun  1 07:20:02 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): returns Inf if

cont.c

@@ -279,6 +279,7 @@ cont_capture(volatile int *stat)
 	VALUE value;
 
 	value = cont->value;
+	if (cont->argc == -1) rb_exc_raise(value);
 	cont->value = Qnil;
 	*stat = 1;
 	return value;
@@ -832,6 +833,7 @@ fiber_store(rb_fiber_t *next_fib)
     if (ruby_setjmp(fib->cont.jmpbuf)) {
 	/* restored */
 	GetFiberPtr(th->fiber, fib);
+	if (fib->cont.argc == -1) rb_exc_raise(fib->cont.value);
 	return fib->cont.value;
     }
     else {
@@ -857,7 +859,15 @@ fiber_switch(VALUE fibval, int argc, VALUE *argv, int is_resume)
 	rb_raise(rb_eFiberError, "fiber called across trap");
     }
     else if (fib->status == TERMINATED) {
-	rb_raise(rb_eFiberError, "dead fiber called");
+	value = rb_exc_new2(rb_eFiberError, "dead fiber called");
+	if (th->fiber != fibval) rb_exc_raise(value);
+	fibval = fib->prev;
+	if (NIL_P(fibval)) fibval = th->root_fiber;
+	GetFiberPtr(fibval, fib);
+	cont = &fib->cont;
+	cont->argc = -1;
+	cont->value = value;
+	cont_restore_0(cont, &value);
     }
 
     if (is_resume) {
@@ -868,7 +878,7 @@ fiber_switch(VALUE fibval, int argc, VALUE *argv, int is_resume)
     cont->value = make_passing_arg(argc, argv);
 
     if ((value = fiber_store(fib)) == Qundef) {
-	cont_restore_0(&fib->cont, &value);
+	cont_restore_0(cont, &value);
 	rb_bug("rb_fiber_resume: unreachable");
     }
 

test/ruby/test_fiber.rb

@@ -164,5 +164,10 @@ def tvar(var, val)
     assert_equal(nil, Thread.current[:v]); fb.resume
     assert_equal(nil, Thread.current[:v]);
   end
+
+  def test_resume_self
+    f = Fiber.new {f.resume}
+    assert_raise(FiberError, '[ruby-core:23651]') {f.transfer}
+  end
 end
 

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "1.9.1"
 #define RUBY_RELEASE_DATE "2009-05-22"
-#define RUBY_PATCHLEVEL 164
+#define RUBY_PATCHLEVEL 165
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1