These tests are currently failing, but should be analyzed and
re-enabled.
libstdc++-v3/ChangeLog:
* testsuite/30_threads/semaphore/try_acquire_for.cc: Disable
test for targets not using futexes for semaphores.
* testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
* testsuite/30_threads/stop_token/stop_callback/destroy.cc:
Disable for all targets.
// { dg-require-gthreads "" }
// { dg-add-options libatomic }
+// { dg-skip-if "FIXME: fails" { ! futex } }
+
#include <semaphore>
#include <chrono>
#include <thread>
// { dg-additional-options "-pthread" { target pthread } }
// { dg-add-options libatomic }
+// { dg-skip-if "FIXME: fails" { ! futex } }
+
#include <semaphore>
#include <chrono>
#include <thread>
// { dg-require-effective-target pthread }
// { dg-require-gthreads "" }
+// { dg-skip-if "FIXME: times out" { *-*-* } }
+
#include <stop_token>
#include <atomic>
#include <thread>