This patch was downloaded from https://sft.its.cern.ch/jira/browse/ROOT-7047.
It fixes the build of clang 3.5 with GCC 5.  File paths have been adjusted.

From 00f3ed6eee41da871799ad0fd19153c7682d61fe Mon Sep 17 00:00:00 2001
From: Alexander Klimov <alserkli@inbox.ru>
Date: Mon, 26 Jan 2015 18:45:23 +0200
Subject: [PATCH] [ADT/IntrusiveRefCntPtr] Give friend access to
 IntrusiveRefCntPtr<X> so the relevant move constructor can
 access 'Obj'.

From LLVM upstream:
Author: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date:   Tue Sep 23 06:06:43 2014 +0000
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218295 91177308-0d34-0410-b5e6-96231b3b80d8
---
 interpreter/llvm/src/include/llvm/ADT/IntrusiveRefCntPtr.h |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/llvm/ADT/IntrusiveRefCntPtr.h b/include/llvm/ADT/IntrusiveRefCntPtr.h
index f9df378..c859c98 100644
--- a/include/llvm/ADT/IntrusiveRefCntPtr.h
+++ b/include/llvm/ADT/IntrusiveRefCntPtr.h
@@ -197,6 +197,9 @@ public:
   private:
     void retain() { if (Obj) IntrusiveRefCntPtrInfo<T>::retain(Obj); }
     void release() { if (Obj) IntrusiveRefCntPtrInfo<T>::release(Obj); }
+
+    template <typename X>
+    friend class IntrusiveRefCntPtr;
   };
 
   template<class T, class U>
-- 
1.7.10.4

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<tr><td><span title='2022-09-07 09:20:12 +0300'>2022-09-07</span></td><td><a href='/guix/commit/.dir-locals.el?id=39b8f85a6efc9b2b60d23e01fd53df8f9ff09dc4'>.dir-locals.el: Update yas snippets directory.</a><span class='msg-avail'>...</span></td><td>Andrew Tropin</td></tr>
<tr><td><span title='2022-09-05 09:13:48 +0300'>2022-09-05</span></td><td><a href='/guix/commit/.dir-locals.el?id=31b4eea5c0d361dfbca119c27cbc1e8c6f65782a'>.dir-locals.el: Add .go to completion-ignored-extensions.</a><span class='msg-avail'>...</span></td><td>Andrew Tropin</td></tr>
<tr><td><span title='2022-09-05 09:10:05 +0300'>2022-09-05</span></td><td><a href='/guix/commit/.dir-locals.el?id=956a79b9b2ba555bf41aafe0c44b9a68a8d6c37a'>.dir-locals.el: Add guix yasnippets.</a><span class='msg-avail'>...</span></td><td>Andrew Tropin</td></tr>
<tr><td><span title='2022-07-10 23:57:14 +0200'>2022-07-10</span></td><td><a href='/guix/commit/.dir-locals.el?id=9fdc4b6c283c5aa5cf10205d87fb2c58b829b9d0'>monads: Add 'mparameterize'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-07-10 01:03:56 -0400'>2022-07-10</span></td><td><a href='/guix/commit/.dir-locals.el?id=c9fb789fe9eaa5dc0694ef14fe36e5aa821a646c'>.dir-locals.el: Restore Emacs 27 lisp-fill-paragraph behavior.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-06-28 00:37:34 -0400'>2022-06-28</span></td><td><a href='/guix/commit/.dir-locals.el?id=b5e85191f96691b00f3612965e6edc09003c61a7'>.dir-locals.el: Properly indent 'wrap-script'.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-06-07 18:29:12 +0200'>2022-06-07</span></td><td><a href='/guix/commit/.dir-locals.el?id=6764455a4b310c9e910c82f5cc87c8714e675f78'>.dir-locals: Adjust to bug-reference-mode in Emacs 28.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-03-06 22:49:47 +0100'>2022-03-06</span></td><td><a href='/guix/commit/.dir-locals.el?id=a8d3033da61958c53c44dd5db90672bfc4533ef9'>import: github: Reuse HTTP connection for the /tags URL fallback.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-03-06 22:49:46 +0100'>2022-03-06</span></td><td><a href='/guix/commit/.dir-locals.el?id=049aefddb2c88dd256a0705683a75704ff830b01'>tests: Add (guix http-client) tests.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-01-29 08:47:38 +0100'>2022-01-29</span></td><td><a href='/guix/commit/.dir-locals.el?id=69218e84f119c698a06febe030946f1eca571e2c'>.dir-locals.el: Don't mess up indentation of prepend and append.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>