* libc/stdlib/__atexit.c (__atexit_lock): Define a global lock for atexit

functions.
(__register_exitproc): Use __atexit_lock rather than a local static lock.
* libc/stdlib/__call_atexit.c: Ditto.

1 files changed, 13 insertions, 0 deletions

diff --git a/newlib/libc/stdlib/__call_atexit.c b/newlib/libc/stdlib/__call_atexit.c
index e7f956184..1e2a9f5fa 100644
--- a/newlib/libc/stdlib/__call_atexit.c
+++ b/newlib/libc/stdlib/__call_atexit.c
@@ -10,6 +10,10 @@
 /* Make this a weak reference to avoid pulling in free.  */
 void free(void *) _ATTRIBUTE((__weak__));
 
+#ifndef __SINGLE_THREAD__
+extern _LOCK_T __atexit_lock;
+#endif
+
 /*
  * Call registered exit handlers.  If D is null then all handlers are called,
  * otherwise only the handlers from that DSO are called.
@@ -26,6 +30,11 @@ _DEFUN (__call_exitprocs, (code, d),
   int i;
   void (*fn) (void);
 
+
+#ifndef __SINGLE_THREAD__
+  __lock_acquire(__atexit_lock);
+#endif
+
  restart:
 
   p = _GLOBAL_REENT->_atexit;
@@ -104,4 +113,8 @@ _DEFUN (__call_exitprocs, (code, d),
 	}
 #endif
     }
+#ifndef __SINGLE_THREAD__
+  __lock_release(__atexit_lock);
+#endif
+
 }