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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-11-04 13:36:05 +0000
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-11-26 13:53:36 +0000
commit48dbce60cfdd328b671aaa9ee0c54ded3246ece9 (patch)
tree0541fb9a339fede5f26ce664b19558e27c89ab96 /nptl
parent71d260c1077ce7ab1530809fc826756bdcd032b0 (diff)
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nptl: Add tests for internal pthread_rwlock_t offsets
This patch new build tests to check for internal fields offsets for
internal pthread_rwlock_t definition.  Althoug the '__data.__flags'
field layout should be preserved due static initializators, the patch
also adds tests for the futexes that may be used in a shared memory
(although using different libc version in such scenario is not really
supported).

Checked with a build against all affected ABIs.

Change-Id: Iccc103d557de13d17e4a3f59a0cad2f4a640c148
Diffstat (limited to 'nptl')
-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;