Fix bug re noninteractive multithreaded memory allocation.

* emacs.c (malloc_enable_thread): Hoist extern decl to top level.
(main) [HAVE_PTHREAD && !SYSTEM_MALLOC && !DOUG_LEA_MALLOC]:
Invoke malloc_enable_thread even when not interactive.
Problem reported by Ken Brown in <http://bugs.gnu.org/14569#275>.
* process.c (init_process_emacs) [CYGWIN]: Tickle glib even
in this case, since the underlying bug has now been fixed.

3 files changed, 17 insertions, 14 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 23e9502e3b5..061083af6cd 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,13 @@
+2013-07-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Fix bug re noninteractive multithreaded memory allocation (Bug#14569).
+        * emacs.c (malloc_enable_thread): Hoist extern decl to top level.
+        (main) [HAVE_PTHREAD && !SYSTEM_MALLOC && !DOUG_LEA_MALLOC]:
+        Invoke malloc_enable_thread even when not interactive.
+        Problem reported by Ken Brown in <http://bugs.gnu.org/14569#275>.
+        * process.c (init_process_emacs) [CYGWIN]: Tickle glib even
+        in this case, since the underlying bug has now been fixed.
+
 2013-07-01  Juanma Barranquero  <lekktu@gmail.com>
 
         * emacs.c (Fkill_emacs): Expand Vauto_save_list_file_name before
diff --git a/src/emacs.c b/src/emacs.c
index 77ae977b37c..08be786de95 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -127,6 +127,8 @@ extern int malloc_set_state (void*);
 /* True if the MALLOC_CHECK_ environment variable was set while
    dumping.  Used to work around a bug in glibc's malloc.  */
 static bool malloc_using_checking;
+#elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
+extern void malloc_enable_thread (void);
 #endif
 
 Lisp_Object Qfile_name_handler_alist;
@@ -1074,13 +1076,8 @@ Using an Emacs configured with --with-x-toolkit=lucid does not have this problem
 #endif /* DOS_NT */
     }
 
-#if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
-  if (! noninteractive)
-    {
-      extern void malloc_enable_thread (void);
-
-      malloc_enable_thread ();
-    }
+#if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
+  malloc_enable_thread ();
 #endif
 
   init_signals (dumping);
diff --git a/src/process.c b/src/process.c
index b63a985fcec..5fe07a9c4fa 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7095,15 +7095,11 @@ init_process_emacs (void)
   if (! noninteractive || initialized)
 #endif
     {
-#if defined HAVE_GLIB && !defined WINDOWSNT && !defined CYGWIN
+#if defined HAVE_GLIB && !defined WINDOWSNT
       /* Tickle glib's child-handling code.  Ask glib to wait for Emacs itself;
          this should always fail, but is enough to initialize glib's
-         private SIGCHLD handler, allowing the code below to copy it into
-         LIB_CHILD_HANDLER.
-
-         For some reason tickling causes Cygwin bootstrap to fail, so it's
-         skipped under Cygwin.  FIXME: Skipping the tickling likely causes
-         bugs in subprocess handling under Cygwin (Bug#14569).  */
+         private SIGCHLD handler, allowing catch_child_signal to copy
+         it into lib_child_handler.  */
       g_source_unref (g_child_watch_source_new (getpid ()));
 #endif
       catch_child_signal ();