test: clean up thread-local key in QUIC radix tests

The QUIC radix test creates a new thread-local key for each script but
only clears the associated value during teardown. The key itself
is never deleted.

Delete the thread-local key after all child threads have joined and the
main-thread value has been cleared.

  1,536 bytes in 3 blocks are still reachable in loss record 873 of 915
     at 0x488D0B0: calloc (in /usr/libexec/valgrind/vgpreload_memcheck-arm64-linux.so)
     by 0x49561CF: pthread_setspecific@@GLIBC_2.34 (in /usr/lib64/libc.so.6)
     by 0x5C0FD7: CRYPTO_THREAD_set_local (threads_pthread.c:1030)
     by 0x41132F: radix_thread_init (quic_bindings.c:570)
     by 0x4114F7: bindings_process_init (quic_bindings.c:604)
     by 0x422563: test_script (main.c:28)
     by 0x5152DF: run_tests (driver.c:518)
     by 0x517447: main (main.c:52)

Signed-off-by: Nikola Pajkovsky <[email protected]>

Reviewed-by: Tim Hudson <[email protected]>
Reviewed-by: Paul Dale <[email protected]>
Reviewed-by: Neil Horman <[email protected]>
MergeDate: Mon Jul 20 09:07:10 2026
(Merged from https://github.com/openssl/openssl/pull/31961)

1 files changed, 3 insertions, 0 deletions

diff --git a/test/radix/quic_bindings.c b/test/radix/quic_bindings.c
index 02356f48eba..7dc46f7950d 100644
--- a/test/radix/quic_bindings.c
+++ b/test/radix/quic_bindings.c
@@ -662,6 +662,9 @@ static int bindings_process_finish(int testresult_main)
     radix_thread_cleanup(); /* cleanup main thread */
     RADIX_PROCESS_cleanup(&radix_process);
 
+    if (!TEST_true(CRYPTO_THREAD_cleanup_local(&radix_thread)))
+        testresult = 0;
+
     if (testresult)
         BIO_printf(bio_err, "==> OK\n\n");
     else