From af4d74fc7df9788a1c0013a4dc66e9bbac951b20 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Wed, 8 Feb 2017 21:13:22 +0900
Subject: Add MRB_TT_PROC check to OP_SUPER as well; fix #3432

---
 src/vm.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/src/vm.c b/src/vm.c
index 287b18518..e734775e2 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1366,11 +1366,22 @@ RETRY_TRY_BLOCK:
       ci->mid = mid;
       ci->proc = m;
       ci->stackent = mrb->c->stack;
-      if (n == CALL_MAXARGS) {
-        ci->argc = -1;
-      }
-      else {
-        ci->argc = n;
+      {
+        int bidx;
+        mrb_value blk;
+
+        if (n == CALL_MAXARGS) {
+          ci->argc = -1;
+          bidx = a+2;
+        }
+        else {
+          ci->argc = n;
+          bidx = a+n+1;
+        }
+        blk = regs[bidx];
+        if (!mrb_nil_p(blk) && mrb_type(blk) != MRB_TT_PROC) {
+          regs[bidx] = mrb_convert_type(mrb, blk, MRB_TT_PROC, "Proc", "to_proc");
+        }
       }
       ci->target_class = c;
       ci->pc = pc + 1;
-- 
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