Fixed a bug in ci address shifting; fix #3423

Dinko Galetic and Denis Kasak reported the issue and the fix. (via https://hackerone.com/dgaletic).
mruby · Feb 8, 2017 · f3d4ff1 · f3d4ff1
1 parent be550f0
commit f3d4ff1
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/vm.c b/src/vm.c
@@ -1705,9 +1705,10 @@ mrb_vm_exec(mrb_state *mrb, struct RProc *proc, mrb_code *pc)
           mrb->jmp = prev_jmp;
           return v;
         }
-        cipop(mrb);
+        ci = mrb->c->ci;
         acc = ci->acc;
         mrb->c->stack = ci->stackent;
+        cipop(mrb);
         if (acc == CI_ACC_SKIP) {
           mrb->jmp = prev_jmp;
           return v;