From 7a5c46a9df7ef01a4f6a620861c35400d5ad28d9 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Wed, 16 Mar 2016 20:41:21 +0100
Subject: [PATCH] patch 7.4.1580 Problem:    Crash when using function
 reference. (Luchr) Solution:   Set initial refcount. (Ken Takata, closes
 #690)

---
 src/eval.c                   |  1 +
 src/testdir/test_partial.vim | 14 ++++++++++++++
 src/version.c                |  2 ++
 3 files changed, 17 insertions(+)

diff --git a/src/eval.c b/src/eval.c
index 506932403a..85f209221a 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -21705,6 +21705,7 @@ handle_subscript(
 	/* Turn "dict.Func" into a partial for "Func" with "dict". */
 	if (pt != NULL)
 	{
+	    pt->pt_refcount = 1;
 	    pt->pt_dict = selfdict;
 	    selfdict = NULL;
 	    pt->pt_name = rettv->vval.v_string;
diff --git a/src/testdir/test_partial.vim b/src/testdir/test_partial.vim
index ddc85e0ef9..acba887cbf 100644
--- a/src/testdir/test_partial.vim
+++ b/src/testdir/test_partial.vim
@@ -68,3 +68,17 @@ func Test_partial_implicit()
 
   call assert_fails('call function(dict.MyFunc, ["bbb"], dict)', 'E924:')
 endfunc
+
+fun InnerCall(funcref)
+  return a:funcref
+endfu
+
+fun OuterCall()
+  let opt = { 'func' : function('sin') }
+  call InnerCall(opt.func)
+endfu
+
+func Test_function_in_dict()
+  call OuterCall()
+endfunc
+
diff --git a/src/version.c b/src/version.c
index e4c3412d77..cb291581d2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1580,
 /**/
     1579,
 /**/