  
 Index: vm_exec.h
 ===================================================================
---- vm_exec.h	(revision 26650)
+--- vm_exec.h	(revision 26690)
 +++ vm_exec.h	(working copy)
 @@ -18,6 +18,40 @@
  typedef rb_num_t GENTRY;

     struct METHOD *data;
Index: thread.c
===================================================================
--- thread.c	(revision 26650)
+++ thread.c	(working copy)
@@ -336,6 +336,16 @@
 static void rb_mutex_unlock_all(mutex_t *mutex, rb_thread_t *th);

Index: include/ruby/ruby.h
===================================================================
--- include/ruby/ruby.h	(revision 26690)
+++ include/ruby/ruby.h	(working copy)
@@ -1325,7 +1325,9 @@
 #define RUBY_EVENT_C_CALL    0x0020
