From e72fc2cf9355fae42d4f937a098d766d6fa1f6d4 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Wed, 14 Jul 1999 16:00:57 +0000
Subject: (lock_file): Do nothing if purifying.

---
 src/filelock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/filelock.c b/src/filelock.c
index b671533161f..dcf3c658ce0 100644
--- a/src/filelock.c
+++ b/src/filelock.c
@@ -545,6 +545,12 @@ lock_file (fn)
   register char *lfname, *locker;
   lock_info_type lock_info;
 
+  /* Don't do locking while dumping Emacs.
+     Uncompressing wtmp files uses call-process, which does not work
+     in an uninitialized Emacs.  */
+  if (! NILP (Vpurify_flag))
+    return;
+
   orig_fn = fn;
   fn = Fexpand_file_name (fn, Qnil);
   encoded_fn = ENCODE_FILE (fn);
-- 
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