Em 18/11/2025 13:26, Ankit Khushwaha escreveu:
In `child_circular_list()` address of local variable ‘struct lock_struct a’
is assigned to `head.list.next` raising the following warning.

robust_list.c: In function ‘child_circular_list’:
robust_list.c:522:24: warning: storing the address of local variable ‘a’
in ‘head.list.next’ [-Wdangling-pointer=]

   522 |         head.list.next = &a.list;
       |         ~~~~~~~~~~~~~~~^~~~~~~~~
robust_list.c:513:28: note: ‘a’ declared here
   513 |         struct lock_struct a, b, c;
       |                            ^
robust_list.c:512:40: note: ‘head’ declared here
   512 |         static struct robust_list_head head;
       |                                        ^~~~

Defining the value with static keyword to fix this.

Signed-off-by: Ankit Khushwaha <[email protected]>
---
  tools/testing/selftests/futex/functional/robust_list.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/futex/functional/robust_list.c 
b/tools/testing/selftests/futex/functional/robust_list.c
index e7d1254e18ca..d1aab1cc5a37 100644
--- a/tools/testing/selftests/futex/functional/robust_list.c
+++ b/tools/testing/selftests/futex/functional/robust_list.c
@@ -510,7 +510,7 @@ TEST(test_robust_list_multiple_elements)
  static int child_circular_list(void *arg)
  {
        static struct robust_list_head head;
-       struct lock_struct a, b, c;
+       static struct lock_struct a, b, c;

I believe that the right fix here would be to drop the static from `head` declaration, WDYT?

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