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 | Index: llvm-toolchain-snapshot_21~++20250422120724+c1940cd0deef/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
===================================================================
--- llvm-toolchain-snapshot_21~++20250422120724+c1940cd0deef.orig/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
+++ llvm-toolchain-snapshot_21~++20250422120724+c1940cd0deef/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: no-threads, c++03
+// XFAIL: *
 
 // <condition_variable>
 
Index: llvm-toolchain-snapshot_21~++20250422120724+c1940cd0deef/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
===================================================================
--- llvm-toolchain-snapshot_21~++20250422120724+c1940cd0deef.orig/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
+++ llvm-toolchain-snapshot_21~++20250422120724+c1940cd0deef/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
@@ -9,6 +9,8 @@
 // UNSUPPORTED: no-threads
 // UNSUPPORTED: c++03, c++11
 
+// XFAIL: *
+
 // <shared_mutex>
 
 // template <class Mutex> class shared_lock;
 |