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-rw-r--r--nptl/pthread_rwlock_init.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/nptl/pthread_rwlock_init.c b/nptl/pthread_rwlock_init.c
index 04f0d40ed8..8813e32383 100644
--- a/nptl/pthread_rwlock_init.c
+++ b/nptl/pthread_rwlock_init.c
@@ -18,6 +18,7 @@
 
 #include "pthreadP.h"
 #include <string.h>
+#include <pthread-offsets.h>
 
 
 static const struct pthread_rwlockattr default_rwlockattr =
@@ -34,6 +35,13 @@ __pthread_rwlock_init (pthread_rwlock_t *rwlock,
 {
   ASSERT_TYPE_SIZE (pthread_rwlock_t, __SIZEOF_PTHREAD_RWLOCK_T);
 
+  /* The __flags is the only field where its offset should be checked to
+     avoid ABI breakage with static initializers.  */
+  ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_rwlock_t, __data.__flags,
+				  __PTHREAD_RWLOCK_FLAGS_OFFSET);
+  ASSERT_PTHREAD_INTERNAL_MEMBER_SIZE (pthread_rwlock_t, __data.__flags,
+				       int);
+
   const struct pthread_rwlockattr *iattr;
 
   iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_rwlockattr;