* vm_insnhelper.c (vm_yield_with_cfunc): check block has Proc.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 46c11a6de0..13bd03dc66 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -661,7 +661,12 @@ vm_yield_with_cfunc(rb_thread_t *th, const rb_block_t *block,
     }
 
     if (blockptr) {
-	blockarg = vm_make_proc(th, blockptr, rb_cProc);
+	if (blockptr->proc) {
+	    blockarg = blockptr->proc;
+	}
+	else {
+	    blockarg = vm_make_proc(th, blockptr, rb_cProc);
+	}
     }
     else {
 	blockarg = Qnil;