* cont.c (cont_restore_1): fix to check root fiber [ruby-dev:30911].

* test/ruby/test_fiber.rb: add a test.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12457 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 2 deletions

diff --git a/cont.c b/cont.c
index 4210ab97d5..97a805d0ab 100644
--- a/cont.c
+++ b/cont.c
@@ -173,11 +173,14 @@ cont_restore_1(rb_context_t *cont)
     }
     else {
 	/* continuation */
+	VALUE fval;
+
 	th->fiber = sth->fiber;
+	fval = th->fiber ? th->fiber : th->root_fiber;
 
-	if (th->fiber) {
+	if (fval) {
 	    rb_context_t *fcont;
-	    GetContPtr(th->fiber, fcont);
+	    GetContPtr(fval, fcont);
 	    th->stack_size = fcont->saved_thread.stack_size;
 	    th->stack = fcont->saved_thread.stack;
 	}