k0kubun	2018-12-23 09:45:11 +0900 (Sun, 23 Dec 2018)

  New Revision: 66500

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66500

  Log:
    iseq.c: avoid Null pointer dereference
    
    detected by coverity scan

  Modified files:
    trunk/iseq.c
Index: iseq.c
===================================================================
--- iseq.c	(revision 66499)
+++ iseq.c	(revision 66500)
@@ -115,7 +115,7 @@ rb_iseq_free(const rb_iseq_t *iseq) https://github.com/ruby/ruby/blob/trunk/iseq.c#L115
 	ruby_xfree(body);
     }
 
-    if (ISEQ_EXECUTABLE_P(iseq) && iseq->aux.exec.local_hooks) {
+    if (iseq && ISEQ_EXECUTABLE_P(iseq) && iseq->aux.exec.local_hooks) {
         rb_hook_list_free(iseq->aux.exec.local_hooks);
     }
 

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