1 files changed, 1 insertions, 52 deletions
diff --git a/gl/pthread.in.h b/gl/pthread.in.h
index 28592cfc..37deab82 100644
--- a/gl/pthread.in.h
+++ b/gl/pthread.in.h
@@ -1,6 +1,6 @@
 /* Implement the most essential subset of POSIX pthread.h.
-   Copyright (C) 2009-2025 Free Software Foundation, Inc.
+   Copyright (C) 2009-2026 Free Software Foundation, Inc.
   This file is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as
@@ -522,7 +522,6 @@ _GL_CXXALIAS_SYS_CAST (pthread_create, int,
 _GL_CXXALIASWARN (pthread_create);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_create
 # if HAVE_RAW_DECL_PTHREAD_CREATE
 _GL_WARN_ON_USE (pthread_create, "pthread_create is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -549,7 +548,6 @@ _GL_CXXALIAS_SYS (pthread_attr_init, int, (pthread_attr_t *attr));
 _GL_CXXALIASWARN (pthread_attr_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_attr_init
 # if HAVE_RAW_DECL_PTHREAD_ATTR_INIT
 _GL_WARN_ON_USE (pthread_attr_init, "pthread_attr_init is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -580,7 +578,6 @@ _GL_CXXALIAS_SYS (pthread_attr_getdetachstate, int,
 _GL_CXXALIASWARN (pthread_attr_getdetachstate);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_attr_getdetachstate
 # if HAVE_RAW_DECL_PTHREAD_ATTR_GETDETACHSTATE
 _GL_WARN_ON_USE (pthread_attr_getdetachstate, "pthread_attr_getdetachstate is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -611,7 +608,6 @@ _GL_CXXALIAS_SYS (pthread_attr_setdetachstate, int,
 _GL_CXXALIASWARN (pthread_attr_setdetachstate);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_attr_setdetachstate
 # if HAVE_RAW_DECL_PTHREAD_ATTR_SETDETACHSTATE
 _GL_WARN_ON_USE (pthread_attr_setdetachstate, "pthread_attr_setdetachstate is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -638,7 +634,6 @@ _GL_CXXALIAS_SYS (pthread_attr_destroy, int, (pthread_attr_t *attr));
 _GL_CXXALIASWARN (pthread_attr_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_attr_destroy
 # if HAVE_RAW_DECL_PTHREAD_ATTR_DESTROY
 _GL_WARN_ON_USE (pthread_attr_destroy, "pthread_attr_destroy is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -663,7 +658,6 @@ _GL_CXXALIAS_SYS (pthread_self, pthread_t, (void));
 _GL_CXXALIASWARN (pthread_self);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_self
 # if HAVE_RAW_DECL_PTHREAD_SELF
 _GL_WARN_ON_USE (pthread_self, "pthread_self is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -688,7 +682,6 @@ _GL_CXXALIAS_SYS (pthread_equal, int, (pthread_t thread1, pthread_t thread2));
 _GL_CXXALIASWARN (pthread_equal);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_equal
 # if HAVE_RAW_DECL_PTHREAD_EQUAL
 _GL_WARN_ON_USE (pthread_equal, "pthread_equal is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -713,7 +706,6 @@ _GL_CXXALIAS_SYS (pthread_detach, int, (pthread_t thread));
 _GL_CXXALIASWARN (pthread_detach);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_detach
 # if HAVE_RAW_DECL_PTHREAD_DETACH
 _GL_WARN_ON_USE (pthread_detach, "pthread_detach is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -738,7 +730,6 @@ _GL_CXXALIAS_SYS (pthread_join, int, (pthread_t thread, void **valuep));
 _GL_CXXALIASWARN (pthread_join);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_join
 # if HAVE_RAW_DECL_PTHREAD_JOIN
 _GL_WARN_ON_USE (pthread_join, "pthread_join is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -764,7 +755,6 @@ _GL_CXXALIAS_SYS_CAST (pthread_exit, void, (void *value));
 _GL_CXXALIASWARN (pthread_exit);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_exit
 # if HAVE_RAW_DECL_PTHREAD_EXIT
 _GL_WARN_ON_USE (pthread_exit, "pthread_exit is not portable - "
                 "use gnulib module pthread-thread for portability");
@@ -798,7 +788,6 @@ _GL_CXXALIAS_SYS_CAST (pthread_once, int,
 _GL_CXXALIASWARN (pthread_once);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_once
 # if HAVE_RAW_DECL_PTHREAD_ONCE
 _GL_WARN_ON_USE (pthread_once, "pthread_once is not portable - "
                 "use gnulib module pthread-once for portability");
@@ -835,7 +824,6 @@ _GL_CXXALIAS_SYS (pthread_mutex_init, int,
 _GL_CXXALIASWARN (pthread_mutex_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutex_init
 # if HAVE_RAW_DECL_PTHREAD_MUTEX_INIT
 _GL_WARN_ON_USE (pthread_mutex_init, "pthread_mutex_init is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -862,7 +850,6 @@ _GL_CXXALIAS_SYS (pthread_mutexattr_init, int, (pthread_mutexattr_t *attr));
 _GL_CXXALIASWARN (pthread_mutexattr_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutexattr_init
 # if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_INIT
 _GL_WARN_ON_USE (pthread_mutexattr_init, "pthread_mutexattr_init is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -899,7 +886,6 @@ _GL_CXXALIAS_SYS_CAST (pthread_mutexattr_gettype, int,
 _GL_CXXALIASWARN (pthread_mutexattr_gettype);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutexattr_gettype
 # if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_GETTYPE
 _GL_WARN_ON_USE (pthread_mutexattr_gettype, "pthread_mutexattr_gettype is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -928,7 +914,6 @@ _GL_CXXALIAS_SYS (pthread_mutexattr_settype, int,
 _GL_CXXALIASWARN (pthread_mutexattr_settype);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutexattr_settype
 # if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_SETTYPE
 _GL_WARN_ON_USE (pthread_mutexattr_settype, "pthread_mutexattr_settype is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -965,7 +950,6 @@ _GL_CXXALIAS_SYS_CAST (pthread_mutexattr_getrobust, int,
 _GL_CXXALIASWARN (pthread_mutexattr_getrobust);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutexattr_getrobust
 # if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_GETROBUST
 _GL_WARN_ON_USE (pthread_mutexattr_getrobust, "pthread_mutexattr_getrobust is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -996,7 +980,6 @@ _GL_CXXALIAS_SYS (pthread_mutexattr_setrobust, int,
 _GL_CXXALIASWARN (pthread_mutexattr_setrobust);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutexattr_setrobust
 # if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_SETROBUST
 _GL_WARN_ON_USE (pthread_mutexattr_setrobust, "pthread_mutexattr_setrobust is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -1023,7 +1006,6 @@ _GL_CXXALIAS_SYS (pthread_mutexattr_destroy, int, (pthread_mutexattr_t *attr));
 _GL_CXXALIASWARN (pthread_mutexattr_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutexattr_destroy
 # if HAVE_RAW_DECL_PTHREAD_MUTEXATTR_DESTROY
 _GL_WARN_ON_USE (pthread_mutexattr_destroy, "pthread_mutexattr_destroy is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -1050,7 +1032,6 @@ _GL_CXXALIAS_SYS (pthread_mutex_lock, int, (pthread_mutex_t *mutex));
 _GL_CXXALIASWARN (pthread_mutex_lock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutex_lock
 # if HAVE_RAW_DECL_PTHREAD_MUTEX_LOCK
 _GL_WARN_ON_USE (pthread_mutex_lock, "pthread_mutex_lock is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -1077,7 +1058,6 @@ _GL_CXXALIAS_SYS (pthread_mutex_trylock, int, (pthread_mutex_t *mutex));
 _GL_CXXALIASWARN (pthread_mutex_trylock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutex_trylock
 # if HAVE_RAW_DECL_PTHREAD_MUTEX_TRYLOCK
 _GL_WARN_ON_USE (pthread_mutex_trylock, "pthread_mutex_trylock is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -1112,7 +1092,6 @@ _GL_CXXALIAS_SYS (pthread_mutex_timedlock, int,
 _GL_CXXALIASWARN (pthread_mutex_timedlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutex_timedlock
 # if HAVE_RAW_DECL_PTHREAD_MUTEX_TIMEDLOCK
 _GL_WARN_ON_USE (pthread_mutex_timedlock, "pthread_mutex_timedlock is not portable - "
                 "use gnulib module pthread_mutex_timedlock for portability");
@@ -1139,7 +1118,6 @@ _GL_CXXALIAS_SYS (pthread_mutex_unlock, int, (pthread_mutex_t *mutex));
 _GL_CXXALIASWARN (pthread_mutex_unlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutex_unlock
 # if HAVE_RAW_DECL_PTHREAD_MUTEX_UNLOCK
 _GL_WARN_ON_USE (pthread_mutex_unlock, "pthread_mutex_unlock is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -1166,7 +1144,6 @@ _GL_CXXALIAS_SYS (pthread_mutex_destroy, int, (pthread_mutex_t *mutex));
 _GL_CXXALIASWARN (pthread_mutex_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_mutex_destroy
 # if HAVE_RAW_DECL_PTHREAD_MUTEX_DESTROY
 _GL_WARN_ON_USE (pthread_mutex_destroy, "pthread_mutex_destroy is not portable - "
                 "use gnulib module pthread-mutex for portability");
@@ -1203,7 +1180,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_init, int,
 _GL_CXXALIASWARN (pthread_rwlock_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_init
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_INIT
 _GL_WARN_ON_USE (pthread_rwlock_init, "pthread_rwlock_init is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1230,7 +1206,6 @@ _GL_CXXALIAS_SYS (pthread_rwlockattr_init, int, (pthread_rwlockattr_t *attr));
 _GL_CXXALIASWARN (pthread_rwlockattr_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlockattr_init
 # if HAVE_RAW_DECL_PTHREAD_RWLOCKATTR_INIT
 _GL_WARN_ON_USE (pthread_rwlockattr_init, "pthread_rwlockattr_init is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1259,7 +1234,6 @@ _GL_CXXALIAS_SYS (pthread_rwlockattr_destroy, int,
 _GL_CXXALIASWARN (pthread_rwlockattr_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlockattr_destroy
 # if HAVE_RAW_DECL_PTHREAD_RWLOCKATTR_DESTROY
 _GL_WARN_ON_USE (pthread_rwlockattr_destroy, "pthread_rwlockattr_destroy is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1286,7 +1260,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_rdlock, int, (pthread_rwlock_t *lock));
 _GL_CXXALIASWARN (pthread_rwlock_rdlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_rdlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_RDLOCK
 _GL_WARN_ON_USE (pthread_rwlock_rdlock, "pthread_rwlock_rdlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1313,7 +1286,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_wrlock, int, (pthread_rwlock_t *lock));
 _GL_CXXALIASWARN (pthread_rwlock_wrlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_wrlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_WRLOCK
 _GL_WARN_ON_USE (pthread_rwlock_wrlock, "pthread_rwlock_wrlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1340,7 +1312,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_tryrdlock, int, (pthread_rwlock_t *lock));
 _GL_CXXALIASWARN (pthread_rwlock_tryrdlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_tryrdlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_TRYRDLOCK
 _GL_WARN_ON_USE (pthread_rwlock_tryrdlock, "pthread_rwlock_tryrdlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1367,7 +1338,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_trywrlock, int, (pthread_rwlock_t *lock));
 _GL_CXXALIASWARN (pthread_rwlock_trywrlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_trywrlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_TRYWRLOCK
 _GL_WARN_ON_USE (pthread_rwlock_trywrlock, "pthread_rwlock_trywrlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1402,7 +1372,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_timedrdlock, int,
 _GL_CXXALIASWARN (pthread_rwlock_timedrdlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_timedrdlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_TIMEDRDLOCK
 _GL_WARN_ON_USE (pthread_rwlock_timedrdlock, "pthread_rwlock_timedrdlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1437,7 +1406,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_timedwrlock, int,
 _GL_CXXALIASWARN (pthread_rwlock_timedwrlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_timedwrlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_TIMEDWRLOCK
 _GL_WARN_ON_USE (pthread_rwlock_timedwrlock, "pthread_rwlock_timedwrlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1464,7 +1432,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_unlock, int, (pthread_rwlock_t *lock));
 _GL_CXXALIASWARN (pthread_rwlock_unlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_unlock
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_UNLOCK
 _GL_WARN_ON_USE (pthread_rwlock_unlock, "pthread_rwlock_unlock is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1491,7 +1458,6 @@ _GL_CXXALIAS_SYS (pthread_rwlock_destroy, int, (pthread_rwlock_t *lock));
 _GL_CXXALIASWARN (pthread_rwlock_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_rwlock_destroy
 # if HAVE_RAW_DECL_PTHREAD_RWLOCK_DESTROY
 _GL_WARN_ON_USE (pthread_rwlock_destroy, "pthread_rwlock_destroy is not portable - "
                 "use gnulib module pthread-rwlock for portability");
@@ -1528,7 +1494,6 @@ _GL_CXXALIAS_SYS (pthread_cond_init, int,
 _GL_CXXALIASWARN (pthread_cond_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_cond_init
 # if HAVE_RAW_DECL_PTHREAD_COND_INIT
 _GL_WARN_ON_USE (pthread_cond_init, "pthread_cond_init is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1555,7 +1520,6 @@ _GL_CXXALIAS_SYS (pthread_condattr_init, int, (pthread_condattr_t *attr));
 _GL_CXXALIASWARN (pthread_condattr_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_condattr_init
 # if HAVE_RAW_DECL_PTHREAD_CONDATTR_INIT
 _GL_WARN_ON_USE (pthread_condattr_init, "pthread_condattr_init is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1582,7 +1546,6 @@ _GL_CXXALIAS_SYS (pthread_condattr_destroy, int, (pthread_condattr_t *attr));
 _GL_CXXALIASWARN (pthread_condattr_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_condattr_destroy
 # if HAVE_RAW_DECL_PTHREAD_CONDATTR_DESTROY
 _GL_WARN_ON_USE (pthread_condattr_destroy, "pthread_condattr_destroy is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1617,7 +1580,6 @@ _GL_CXXALIAS_SYS (pthread_cond_wait, int,
 _GL_CXXALIASWARN (pthread_cond_wait);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_cond_wait
 # if HAVE_RAW_DECL_PTHREAD_COND_WAIT
 _GL_WARN_ON_USE (pthread_cond_wait, "pthread_cond_wait is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1656,7 +1618,6 @@ _GL_CXXALIAS_SYS (pthread_cond_timedwait, int,
 _GL_CXXALIASWARN (pthread_cond_timedwait);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_cond_timedwait
 # if HAVE_RAW_DECL_PTHREAD_COND_TIMEDWAIT
 _GL_WARN_ON_USE (pthread_cond_timedwait, "pthread_cond_timedwait is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1683,7 +1644,6 @@ _GL_CXXALIAS_SYS (pthread_cond_signal, int, (pthread_cond_t *cond));
 _GL_CXXALIASWARN (pthread_cond_signal);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_cond_signal
 # if HAVE_RAW_DECL_PTHREAD_COND_SIGNAL
 _GL_WARN_ON_USE (pthread_cond_signal, "pthread_cond_signal is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1710,7 +1670,6 @@ _GL_CXXALIAS_SYS (pthread_cond_broadcast, int, (pthread_cond_t *cond));
 _GL_CXXALIASWARN (pthread_cond_broadcast);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_cond_broadcast
 # if HAVE_RAW_DECL_PTHREAD_COND_BROADCAST
 _GL_WARN_ON_USE (pthread_cond_broadcast, "pthread_cond_broadcast is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1737,7 +1696,6 @@ _GL_CXXALIAS_SYS (pthread_cond_destroy, int, (pthread_cond_t *cond));
 _GL_CXXALIASWARN (pthread_cond_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_cond_destroy
 # if HAVE_RAW_DECL_PTHREAD_COND_DESTROY
 _GL_WARN_ON_USE (pthread_cond_destroy, "pthread_cond_destroy is not portable - "
                 "use gnulib module pthread-cond for portability");
@@ -1770,7 +1728,6 @@ _GL_CXXALIAS_SYS_CAST (pthread_key_create, int,
 _GL_CXXALIASWARN (pthread_key_create);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_key_create
 # if HAVE_RAW_DECL_PTHREAD_KEY_CREATE
 _GL_WARN_ON_USE (pthread_key_create, "pthread_key_create is not portable - "
                 "use gnulib module pthread-tss for portability");
@@ -1799,7 +1756,6 @@ _GL_CXXALIAS_SYS (pthread_setspecific, int,
 _GL_CXXALIASWARN (pthread_setspecific);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_setspecific
 # if HAVE_RAW_DECL_PTHREAD_SETSPECIFIC
 _GL_WARN_ON_USE (pthread_setspecific, "pthread_setspecific is not portable - "
                 "use gnulib module pthread-tss for portability");
@@ -1824,7 +1780,6 @@ _GL_CXXALIAS_SYS (pthread_getspecific, void *, (pthread_key_t key));
 _GL_CXXALIASWARN (pthread_getspecific);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_getspecific
 # if HAVE_RAW_DECL_PTHREAD_GETSPECIFIC
 _GL_WARN_ON_USE (pthread_getspecific, "pthread_getspecific is not portable - "
                 "use gnulib module pthread-tss for portability");
@@ -1849,7 +1804,6 @@ _GL_CXXALIAS_SYS (pthread_key_delete, int, (pthread_key_t key));
 _GL_CXXALIASWARN (pthread_key_delete);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_key_delete
 # if HAVE_RAW_DECL_PTHREAD_KEY_DELETE
 _GL_WARN_ON_USE (pthread_key_delete, "pthread_key_delete is not portable - "
                 "use gnulib module pthread-tss for portability");
@@ -1882,7 +1836,6 @@ _GL_CXXALIAS_SYS (pthread_spin_init, int,
 _GL_CXXALIASWARN (pthread_spin_init);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_spin_init
 # if HAVE_RAW_DECL_PTHREAD_SPIN_INIT
 _GL_WARN_ON_USE (pthread_spin_init, "pthread_spin_init is not portable - "
                 "use gnulib module pthread-spin for portability");
@@ -1909,7 +1862,6 @@ _GL_CXXALIAS_SYS (pthread_spin_lock, int, (pthread_spinlock_t *lock));
 _GL_CXXALIASWARN (pthread_spin_lock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_spin_lock
 # if HAVE_RAW_DECL_PTHREAD_SPIN_LOCK
 _GL_WARN_ON_USE (pthread_spin_lock, "pthread_spin_lock is not portable - "
                 "use gnulib module pthread-spin for portability");
@@ -1936,7 +1888,6 @@ _GL_CXXALIAS_SYS (pthread_spin_trylock, int, (pthread_spinlock_t *lock));
 _GL_CXXALIASWARN (pthread_spin_trylock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_spin_trylock
 # if HAVE_RAW_DECL_PTHREAD_SPIN_TRYLOCK
 _GL_WARN_ON_USE (pthread_spin_trylock, "pthread_spin_trylock is not portable - "
                 "use gnulib module pthread-spin for portability");
@@ -1963,7 +1914,6 @@ _GL_CXXALIAS_SYS (pthread_spin_unlock, int, (pthread_spinlock_t *lock));
 _GL_CXXALIASWARN (pthread_spin_unlock);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_spin_unlock
 # if HAVE_RAW_DECL_PTHREAD_SPIN_UNLOCK
 _GL_WARN_ON_USE (pthread_spin_unlock, "pthread_spin_unlock is not portable - "
                 "use gnulib module pthread-spin for portability");
@@ -1990,7 +1940,6 @@ _GL_CXXALIAS_SYS (pthread_spin_destroy, int, (pthread_spinlock_t *lock));
 _GL_CXXALIASWARN (pthread_spin_destroy);
 # endif
 #elif defined GNULIB_POSIXCHECK
-# undef pthread_spin_destroy
 # if HAVE_RAW_DECL_PTHREAD_SPIN_DESTROY
 _GL_WARN_ON_USE (pthread_spin_destroy, "pthread_spin_destroy is not portable - "
                 "use gnulib module pthread-spin for portability");