From b8869498b7b1458af1cf2a5ccc7644849f826230 Mon Sep 17 00:00:00 2001
From: Takeshi Watanabe <takechi101010@gmail.com>
Date: Fri, 27 Apr 2018 10:45:59 +0900
Subject: Fix heap use after free on mruby-aws-sigv4.

---
 src/vm.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/vm.c b/src/vm.c
index 9e43d0a4e..429cc2648 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -527,6 +527,8 @@ mrb_exec_irep(mrb_state *mrb, mrb_value self, struct RProc *p)
     return MRB_PROC_CFUNC(p)(mrb, self);
   }
   ci->nregs = p->body.irep->nregs;
+  ci->env = MRB_PROC_ENV(p);
+  if (ci->env) ci->env->stack[0] = self;
   if (ci->argc < 0) keep = 3;
   else keep = ci->argc + 2;
   if (ci->nregs < keep) {
-- 
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