k0kubun	2018-09-11 19:58:33 +0900 (Tue, 11 Sep 2018)

  New Revision: 64678

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64678

  Log:
    vm_insnhelper.c: fix -Wformat-security on rb_bug

  Modified files:
    trunk/vm_insnhelper.c
Index: vm_insnhelper.c
===================================================================
--- vm_insnhelper.c	(revision 64677)
+++ vm_insnhelper.c	(revision 64678)
@@ -3929,7 +3929,7 @@ vm_canary_is_found_dead(enum ruby_vminsn https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L3929
     VALUE message    = rb_sprintf("dead canary found at %s: %s", insn, str);
     const char *msg  = StringValueCStr(message);
 
-    rb_bug(msg);
+    rb_bug("%s", msg);
 }
 
 #elif !defined(MJIT_HEADER)

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