From 265141b332edfacd03e10a2de9e070077d0b2e82 Mon Sep 17 00:00:00 2001
From: Michael Albinus <michael.albinus@gmx.de>
Date: Fri, 4 Mar 2016 12:57:43 +0000
Subject: [PATCH] Fix Bug#22814

* src/doc.c (get_doc_string): Raise an error in case too many
files are open.  (Bug#22814)
---
 src/doc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/doc.c b/src/doc.c
index a9273f05809..6e7906578a4 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -126,6 +126,9 @@ get_doc_string (Lisp_Object filepos, bool unibyte, bool definition)
   fd = emacs_open (name, O_RDONLY, 0);
   if (fd < 0)
     {
+      if ((errno == EMFILE) || (errno == ENFILE))
+	report_file_error ("Read error on documentation file", file);
+
 #ifndef CANNOT_DUMP
       if (!NILP (Vpurify_flag))
 	{
-- 
2.39.2