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-rw-r--r--nptl/pthread_mutexattr_setpshared.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/nptl/pthread_mutexattr_setpshared.c b/nptl/pthread_mutexattr_setpshared.c
index 8e08b9e161..5f2cf417e3 100644
--- a/nptl/pthread_mutexattr_setpshared.c
+++ b/nptl/pthread_mutexattr_setpshared.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -34,10 +34,12 @@ pthread_mutexattr_setpshared (attr, pshared)
 
   iattr = (struct pthread_mutexattr *) attr;
 
+  /* We use bit 31 to signal whether the mutex is going to be
+     process-shared or not.  */
   if (pshared == PTHREAD_PROCESS_PRIVATE)
-    iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_PSHARED;
+    iattr->mutexkind &= ~0x80000000;
   else
-    iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_PSHARED;
+    iattr->mutexkind |= 0x80000000;
 
   return 0;
 }