1 files changed, 12 insertions, 2 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
index 4d1c9450b..0ec6e5534 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
@@ -43,11 +43,17 @@ typedef union
 } pthread_attr_t;
 
 
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+
+
 /* Data structures for mutex handling.  The structure of the attribute
    type is not exposed on purpose.  */
 typedef union
 {
-  struct
+  struct __pthread_mutex_s
   {
     int __lock;
     unsigned int __count;
@@ -56,7 +62,11 @@ typedef union
        binary compatibility.  */
     int __kind;
     unsigned int __nusers;
-    int __spins;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;