  
 Index: vm_exec.h
 ===================================================================
---- vm_exec.h	(revision 25324)
+--- vm_exec.h	(revision 25354)
 +++ vm_exec.h	(working copy)
 @@ -18,6 +18,45 @@
  typedef rb_num_t GENTRY;

 #define RUBY_EVENT_COVERAGE 0x40000
Index: vm_core.h
===================================================================
--- vm_core.h	(revision 25324)
+++ vm_core.h	(working copy)
@@ -155,7 +155,7 @@
     VALUE type;          /* instruction sequence type */

 static VALUE
 iseq_s_disasm(VALUE klass, VALUE body)
 {
@@ -1480,6 +1614,7 @@
     rb_define_method(rb_cISeq, "disassemble", rb_iseq_disasm, 0);
     rb_define_method(rb_cISeq, "to_a", iseq_to_a, 0);
     rb_define_method(rb_cISeq, "eval", iseq_eval, 0);
+    rb_define_method(rb_cISeq, "child_iseqs", rb_iseq_child_iseqs, 0);
 
     /* disable this feature because there is no verifier. */
     /* rb_define_singleton_method(rb_cISeq, "load", iseq_s_load, -1); */
Index: proc.c
===================================================================
--- proc.c	(revision 25354)
+++ proc.c	(working copy)
@@ -27,7 +27,7 @@
 VALUE rb_iseq_parameters(const rb_iseq_t *iseq, int is_proc);
