proc.c: proc without block

* proc.c (proc_new): promoted lambda/proc/Proc.new with no block
  in a method called with a block to a warning/error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66772 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/proc.c b/proc.c
index c24c0b3023..6241bf32ec 100644
--- a/proc.c
+++ b/proc.c
@@ -707,6 +707,9 @@ proc_new(VALUE klass, int8_t is_lambda)
 
 	if ((block_handler = rb_vm_frame_block_handler(cfp)) != VM_BLOCK_HANDLER_NONE) {
 	    if (is_lambda) {
+                rb_raise(rb_eArgError, proc_without_block);
+            }
+            else {
 		rb_warn(proc_without_block);
 	    }
 	}