libgcc, libstdc++: Make declarations no longer TU-local [PR115126]

In C++20, modules streaming check for exposures of TU-local entities.
In general exposing internal linkage functions in a header is liable to
cause ODR violations in C++, and this is now detected in a module
context.

This patch goes through and removes 'static' from many declarations
exposed through libstdc++ to prevent code like the following from
failing:

  export module M;
  extern "C++" {
    #include <bits/stdc++.h>
  }

Since gthreads is used from C as well, we need to choose whether to use
'inline' or 'static inline' depending on whether we're compiling for C
or C++ (since the semantics of 'inline' are different between the
languages).  Additionally we need to remove static global variables, so
we migrate these to function-local statics to avoid the ODR issues.

There doesn't seem to be a good workaround for weakrefs, so I've left
them as-is and will work around it in the modules streaming code to
consider them as not TU-local.

The same issue occurs in the objective-C specific parts of gthreads, but
I'm not familiar with the surrounding context and we don't currently
test modules with Objective C++ anyway so I've left it as-is.

	PR libstdc++/115126

libgcc/ChangeLog:

	* gthr-posix.h (__GTHREAD_ALWAYS_INLINE): New macro.
	(__GTHREAD_INLINE): New macro.
	(__gthread_active): Convert from variable to (hidden) function.
	(__gthread_active_p): Mark as __GTHREAD_INLINE instead of
	static; make visibility("hidden") when it has a static local
	variable.
	(__gthread_trigger): Mark as __GTHREAD_INLINE instead of static.
	(__gthread_create): Likewise.
	(__gthread_join): Likewise.
	(__gthread_detach): Likewise.
	(__gthread_equal): Likewise.
	(__gthread_self): Likewise.
	(__gthread_yield): Likewise.
	(__gthread_once): Likewise.
	(__gthread_key_create): Likewise.
	(__gthread_key_delete): Likewise.
	(__gthread_getspecific): Likewise.
	(__gthread_setspecific): Likewise.
	(__gthread_mutex_init_function): Likewise.
	(__gthread_mutex_destroy): Likewise.
	(__gthread_mutex_lock): Likewise.
	(__gthread_mutex_trylock): Likewise.
	(__gthread_mutex_timedlock): Likewise.
	(__gthread_mutex_unlock): Likewise.
	(__gthread_recursive_mutex_init_function): Likewise.
	(__gthread_recursive_mutex_lock): Likewise.
	(__gthread_recursive_mutex_trylock): Likewise.
	(__gthread_recursive_mutex_timedlock): Likewise.
	(__gthread_recursive_mutex_unlock): Likewise.
	(__gthread_recursive_mutex_destroy): Likewise.
	(__gthread_cond_init_function): Likewise.
	(__gthread_cond_broadcast): Likewise.
	(__gthread_cond_signal): Likewise.
	(__gthread_cond_wait): Likewise.
	(__gthread_cond_timedwait): Likewise.
	(__gthread_cond_wait_recursive): Likewise.
	(__gthread_cond_destroy): Likewise.
	(__gthread_rwlock_rdlock): Likewise.
	(__gthread_rwlock_tryrdlock): Likewise.
	(__gthread_rwlock_wrlock): Likewise.
	(__gthread_rwlock_trywrlock): Likewise.
	(__gthread_rwlock_unlock): Likewise.
	* gthr-single.h: (__GTHREAD_ALWAYS_INLINE): New macro.
	(__GTHREAD_INLINE): New macro.
	(__gthread_active_p): Mark as __GTHREAD_INLINE instead of static.
	(__gthread_once): Likewise.
	(__gthread_key_create): Likewise.
	(__gthread_key_delete): Likewise.
	(__gthread_getspecific): Likewise.
	(__gthread_setspecific): Likewise.
	(__gthread_mutex_destroy): Likewise.
	(__gthread_mutex_lock): Likewise.
	(__gthread_mutex_trylock): Likewise.
	(__gthread_mutex_unlock): Likewise.
	(__gthread_recursive_mutex_lock): Likewise.
	(__gthread_recursive_mutex_trylock): Likewise.
	(__gthread_recursive_mutex_unlock): Likewise.
	(__gthread_recursive_mutex_destroy): Likewise.

libstdc++-v3/ChangeLog:

	* include/bits/shared_ptr.h (std::__is_shared_ptr): Remove
	unnecessary 'static'.
	* include/bits/unique_ptr.h (std::__is_unique_ptr): Likewise.
	* include/std/future (std::__create_task_state): Likewise.
	* include/std/shared_mutex (_GLIBCXX_GTRHW): Likewise.
	(__glibcxx_rwlock_init): Likewise.
	(__glibcxx_rwlock_timedrdlock): Likewise.
	(__glibcxx_rwlock_timedwrlock): Likewise.
	(__glibcxx_rwlock_rdlock): Likewise.
	(__glibcxx_rwlock_tryrdlock): Likewise.
	(__glibcxx_rwlock_wrlock): Likewise.
	(__glibcxx_rwlock_trywrlock): Likewise.
	(__glibcxx_rwlock_unlock): Likewise.
	(__glibcxx_rwlock_destroy): Likewise.
	(__glibcxx_rwlock_init): Likewise.
	* include/pstl/algorithm_impl.h
	(__pstl::__internal::__set_algo_cut_off): Mark inline.
	* include/pstl/unseq_backend_simd.h
	(__pstl::__unseq_backend::__lane_size): Mark inline.

Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Reviewed-by: Jakub Jelinek <jakub@redhat.com>

8 files changed, 137 insertions, 84 deletions

diff --git a/libgcc/gthr-posix.h b/libgcc/gthr-posix.h
index 82e8f9f..478bcf4 100644
--- a/libgcc/gthr-posix.h
+++ b/libgcc/gthr-posix.h
@@ -44,6 +44,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 # endif
 #endif
 
+#ifdef __has_attribute
+# if __has_attribute(__always_inline__)
+#  define __GTHREAD_ALWAYS_INLINE __attribute__((__always_inline__))
+# endif
+#endif
+#ifndef __GTHREAD_ALWAYS_INLINE
+# define __GTHREAD_ALWAYS_INLINE
+#endif
+
+#ifdef __cplusplus
+# define __GTHREAD_INLINE inline __GTHREAD_ALWAYS_INLINE
+#else
+# define __GTHREAD_INLINE static inline
+#endif
+
 typedef pthread_t __gthread_t;
 typedef pthread_key_t __gthread_key_t;
 typedef pthread_once_t __gthread_once_t;
@@ -182,22 +197,30 @@ __gthrw(pthread_setschedparam)
 
 #if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__))
 
-static volatile int __gthread_active = -1;
+#pragma GCC visibility push(hidden)
+__GTHREAD_INLINE volatile int *
+__gthread_active (void)
+{
+  static volatile int __gthread_active_var = -1;
+  return &__gthread_active_var;
+}
+#pragma GCC visibility pop
 
-static void
+__GTHREAD_INLINE void
 __gthread_trigger (void)
 {
-  __gthread_active = 1;
+  *__gthread_active () = 1;
 }
 
-static inline int
+#pragma GCC visibility push(hidden)
+__GTHREAD_INLINE int
 __gthread_active_p (void)
 {
   static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
   static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
 
   /* Avoid reading __gthread_active twice on the main code path.  */
-  int __gthread_active_latest_value = __gthread_active;
+  int __gthread_active_latest_value = *__gthread_active ();
 
   /* This test is not protected to avoid taking a lock on the main code
      path so every update of __gthread_active in a threaded program must
@@ -214,14 +237,15 @@ __gthread_active_p (void)
 	}
 
       /* Make sure we'll never enter this block again.  */
-      if (__gthread_active < 0)
-	__gthread_active = 0;
+      if (*__gthread_active () < 0)
+	*__gthread_active () = 0;
 
-      __gthread_active_latest_value = __gthread_active;
+      __gthread_active_latest_value = *__gthread_active ();
     }
 
   return __gthread_active_latest_value != 0;
 }
+#pragma GCC visibility pop
 
 #else /* neither FreeBSD nor Solaris */
 
@@ -257,13 +281,15 @@ __gthrw2(__gthrw_(__pthread_key_create),
 # define GTHR_ACTIVE_PROXY	__gthrw_(pthread_cancel)
 #endif
 
-static inline int
+#pragma GCC visibility push(hidden)
+__GTHREAD_INLINE int
 __gthread_active_p (void)
 {
   static void *const __gthread_active_ptr
     = __extension__ (void *) &GTHR_ACTIVE_PROXY;
   return __gthread_active_ptr != 0;
 }
+#pragma GCC visibility pop
 
 #endif /* FreeBSD or Solaris */
 
@@ -288,20 +314,27 @@ __gthread_active_p (void)
 
 #if defined(__hppa__) && defined(__hpux__)
 
-static volatile int __gthread_active = -1;
+#pragma GCC visibility push(hidden)
+__GTHREAD_INLINE volatile int *
+__gthread_active (void)
+{
+  static volatile int __gthread_active_var = -1;
+  return &__gthread_active_var;
+}
+#pragma GCC visibility pop
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_active_p (void)
 {
   /* Avoid reading __gthread_active twice on the main code path.  */
-  int __gthread_active_latest_value = __gthread_active;
+  int __gthread_active_latest_value = *__gthread_active ();
   size_t __s;
 
   if (__builtin_expect (__gthread_active_latest_value < 0, 0))
     {
       pthread_default_stacksize_np (0, &__s);
-      __gthread_active = __s ? 1 : 0;
-      __gthread_active_latest_value = __gthread_active;
+      *__gthread_active () = __s ? 1 : 0;
+      __gthread_active_latest_value = *__gthread_active ();
     }
 
   return __gthread_active_latest_value != 0;
@@ -309,7 +342,7 @@ __gthread_active_p (void)
 
 #else /* not hppa-hpux */
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_active_p (void)
 {
   return 1;
@@ -669,44 +702,44 @@ __gthread_objc_condition_signal (objc_condition_t condition)
 
 #else /* _LIBOBJC */
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_create (__gthread_t *__threadid, void *(*__func) (void*),
 		  void *__args)
 {
   return __gthrw_(pthread_create) (__threadid, NULL, __func, __args);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_join (__gthread_t __threadid, void **__value_ptr)
 {
   return __gthrw_(pthread_join) (__threadid, __value_ptr);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_detach (__gthread_t __threadid)
 {
   return __gthrw_(pthread_detach) (__threadid);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_equal (__gthread_t __t1, __gthread_t __t2)
 {
   return __gthrw_(pthread_equal) (__t1, __t2);
 }
 
-static inline __gthread_t
+__GTHREAD_INLINE __gthread_t
 __gthread_self (void)
 {
   return __gthrw_(pthread_self) ();
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_yield (void)
 {
   return __gthrw_(sched_yield) ();
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_once (__gthread_once_t *__once, void (*__func) (void))
 {
   if (__gthread_active_p ())
@@ -715,38 +748,38 @@ __gthread_once (__gthread_once_t *__once, void (*__func) (void))
     return -1;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
 {
   return __gthrw_(pthread_key_create) (__key, __dtor);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_key_delete (__gthread_key_t __key)
 {
   return __gthrw_(pthread_key_delete) (__key);
 }
 
-static inline void *
+__GTHREAD_INLINE void *
 __gthread_getspecific (__gthread_key_t __key)
 {
   return __gthrw_(pthread_getspecific) (__key);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_setspecific (__gthread_key_t __key, const void *__ptr)
 {
   return __gthrw_(pthread_setspecific) (__key, __ptr);
 }
 
-static inline void
+__GTHREAD_INLINE void
 __gthread_mutex_init_function (__gthread_mutex_t *__mutex)
 {
   if (__gthread_active_p ())
     __gthrw_(pthread_mutex_init) (__mutex, NULL);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_destroy (__gthread_mutex_t *__mutex)
 {
   if (__gthread_active_p ())
@@ -755,7 +788,7 @@ __gthread_mutex_destroy (__gthread_mutex_t *__mutex)
     return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_lock (__gthread_mutex_t *__mutex)
 {
   if (__gthread_active_p ())
@@ -764,7 +797,7 @@ __gthread_mutex_lock (__gthread_mutex_t *__mutex)
     return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_trylock (__gthread_mutex_t *__mutex)
 {
   if (__gthread_active_p ())
@@ -774,7 +807,7 @@ __gthread_mutex_trylock (__gthread_mutex_t *__mutex)
 }
 
 #if _GTHREAD_USE_MUTEX_TIMEDLOCK
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_timedlock (__gthread_mutex_t *__mutex,
 			   const __gthread_time_t *__abs_timeout)
 {
@@ -785,7 +818,7 @@ __gthread_mutex_timedlock (__gthread_mutex_t *__mutex,
 }
 #endif
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_unlock (__gthread_mutex_t *__mutex)
 {
   if (__gthread_active_p ())
@@ -796,7 +829,7 @@ __gthread_mutex_unlock (__gthread_mutex_t *__mutex)
 
 #if !defined( PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) \
   || defined(_GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC)
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
 {
   if (__gthread_active_p ())
@@ -818,20 +851,20 @@ __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
 }
 #endif
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_lock (__mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_trylock (__mutex);
 }
 
 #if _GTHREAD_USE_MUTEX_TIMEDLOCK
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex,
 				     const __gthread_time_t *__abs_timeout)
 {
@@ -839,20 +872,20 @@ __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex,
 }
 #endif
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_unlock (__mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_destroy (__mutex);
 }
 
 #ifdef _GTHREAD_USE_COND_INIT_FUNC
-static inline void
+__GTHREAD_INLINE void
 __gthread_cond_init_function (__gthread_cond_t *__cond)
 {
   if (__gthread_active_p ())
@@ -860,46 +893,46 @@ __gthread_cond_init_function (__gthread_cond_t *__cond)
 }
 #endif
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_cond_broadcast (__gthread_cond_t *__cond)
 {
   return __gthrw_(pthread_cond_broadcast) (__cond);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_cond_signal (__gthread_cond_t *__cond)
 {
   return __gthrw_(pthread_cond_signal) (__cond);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
 {
   return __gthrw_(pthread_cond_wait) (__cond, __mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex,
 			  const __gthread_time_t *__abs_timeout)
 {
   return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_cond_wait_recursive (__gthread_cond_t *__cond,
 			       __gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_cond_wait (__cond, __mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_cond_destroy (__gthread_cond_t* __cond)
 {
   return __gthrw_(pthread_cond_destroy) (__cond);
 }
 
 #ifndef __cplusplus
-static inline int
+__GTHREAD_INLINE int
 __gthread_rwlock_rdlock (__gthread_rwlock_t *__rwlock)
 {
   if (__gthread_active_p ())
@@ -908,7 +941,7 @@ __gthread_rwlock_rdlock (__gthread_rwlock_t *__rwlock)
     return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_rwlock_tryrdlock (__gthread_rwlock_t *__rwlock)
 {
   if (__gthread_active_p ())
@@ -917,7 +950,7 @@ __gthread_rwlock_tryrdlock (__gthread_rwlock_t *__rwlock)
     return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_rwlock_wrlock (__gthread_rwlock_t *__rwlock)
 {
   if (__gthread_active_p ())
@@ -926,7 +959,7 @@ __gthread_rwlock_wrlock (__gthread_rwlock_t *__rwlock)
     return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_rwlock_trywrlock (__gthread_rwlock_t *__rwlock)
 {
   if (__gthread_active_p ())
@@ -935,7 +968,7 @@ __gthread_rwlock_trywrlock (__gthread_rwlock_t *__rwlock)
     return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_rwlock_unlock (__gthread_rwlock_t *__rwlock)
 {
   if (__gthread_active_p ())
@@ -947,4 +980,7 @@ __gthread_rwlock_unlock (__gthread_rwlock_t *__rwlock)
 
 #endif /* _LIBOBJC */
 
+#undef __GTHREAD_INLINE
+#undef __GTHREAD_ALWAYS_INLINE
+
 #endif /* ! GCC_GTHR_POSIX_H */
diff --git a/libgcc/gthr-single.h b/libgcc/gthr-single.h
index 8ee6b17..2a799ad 100644
--- a/libgcc/gthr-single.h
+++ b/libgcc/gthr-single.h
@@ -38,6 +38,21 @@ typedef int __gthread_recursive_mutex_t;
 #define __GTHREAD_MUTEX_INIT_FUNCTION(mx) do {} while (0)
 #define __GTHREAD_RECURSIVE_MUTEX_INIT 0
 
+#ifdef __has_attribute
+# if __has_attribute(__always_inline__)
+#  define __GTHREAD_ALWAYS_INLINE __attribute__((__always_inline__))
+# endif
+#endif
+#ifndef __GTHREAD_ALWAYS_INLINE
+# define __GTHREAD_ALWAYS_INLINE
+#endif
+
+#ifdef __cplusplus
+# define __GTHREAD_INLINE inline __GTHREAD_ALWAYS_INLINE
+#else
+# define __GTHREAD_INLINE static inline
+#endif
+
 #define UNUSED __attribute__((__unused__))
 
 #ifdef _LIBOBJC
@@ -207,85 +222,85 @@ __gthread_objc_condition_signal (objc_condition_t condition UNUSED)
 
 #else /* _LIBOBJC */
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_active_p (void)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_once (__gthread_once_t *__once UNUSED, void (*__func) (void) UNUSED)
 {
   return 0;
 }
 
-static inline int UNUSED
+__GTHREAD_INLINE int UNUSED
 __gthread_key_create (__gthread_key_t *__key UNUSED, void (*__func) (void *) UNUSED)
 {
   return 0;
 }
 
-static int UNUSED
+__GTHREAD_INLINE int UNUSED
 __gthread_key_delete (__gthread_key_t __key UNUSED)
 {
   return 0;
 }
 
-static inline void *
+__GTHREAD_INLINE void *
 __gthread_getspecific (__gthread_key_t __key UNUSED)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_setspecific (__gthread_key_t __key UNUSED, const void *__v UNUSED)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_destroy (__gthread_mutex_t *__mutex UNUSED)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_lock (__gthread_mutex_t *__mutex UNUSED)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_trylock (__gthread_mutex_t *__mutex UNUSED)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_mutex_unlock (__gthread_mutex_t *__mutex UNUSED)
 {
   return 0;
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_lock (__mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_trylock (__mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_unlock (__mutex);
 }
 
-static inline int
+__GTHREAD_INLINE int
 __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
 {
   return __gthread_mutex_destroy (__mutex);
@@ -294,5 +309,7 @@ __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
 #endif /* _LIBOBJC */
 
 #undef UNUSED
+#undef __GTHREAD_INLINE
+#undef __GTHREAD_ALWAYS_INLINE
 
 #endif /* ! GCC_GTHR_SINGLE_H */
diff --git a/libstdc++-v3/include/bits/shared_ptr.h b/libstdc++-v3/include/bits/shared_ptr.h
index 13273af..9b1c2b4 100644
--- a/libstdc++-v3/include/bits/shared_ptr.h
+++ b/libstdc++-v3/include/bits/shared_ptr.h
@@ -1160,9 +1160,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 #if __cpp_variable_templates
   template<typename _Tp>
-    static constexpr bool __is_shared_ptr = false;
+    constexpr bool __is_shared_ptr = false;
   template<typename _Tp>
-    static constexpr bool __is_shared_ptr<shared_ptr<_Tp>> = true;
+    constexpr bool __is_shared_ptr<shared_ptr<_Tp>> = true;
 #endif
 
   /// @} relates shared_ptr
diff --git a/libstdc++-v3/include/bits/unique_ptr.h b/libstdc++-v3/include/bits/unique_ptr.h
index edcff78..182173a 100644
--- a/libstdc++-v3/include/bits/unique_ptr.h
+++ b/libstdc++-v3/include/bits/unique_ptr.h
@@ -1157,9 +1157,9 @@ namespace __detail
 
 #if __cpp_variable_templates
   template<typename _Tp>
-    static constexpr bool __is_unique_ptr = false;
+    constexpr bool __is_unique_ptr = false;
   template<typename _Tp, typename _Del>
-    static constexpr bool __is_unique_ptr<unique_ptr<_Tp, _Del>> = true;
+    constexpr bool __is_unique_ptr<unique_ptr<_Tp, _Del>> = true;
 #endif
 
   /// @} group pointer_abstractions
diff --git a/libstdc++-v3/include/pstl/algorithm_impl.h b/libstdc++-v3/include/pstl/algorithm_impl.h
index aec8c74..1403b02 100644
--- a/libstdc++-v3/include/pstl/algorithm_impl.h
+++ b/libstdc++-v3/include/pstl/algorithm_impl.h
@@ -2890,7 +2890,7 @@ __pattern_includes(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _
         });
 }
 
-constexpr auto __set_algo_cut_off = 1000;
+inline constexpr auto __set_algo_cut_off = 1000;
 
 template <class _IsVector, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2,
           class _OutputIterator, class _Compare, class _SizeFunction, class _SetOP>
diff --git a/libstdc++-v3/include/pstl/unseq_backend_simd.h b/libstdc++-v3/include/pstl/unseq_backend_simd.h
index f3c38fb..58a2c0c 100644
--- a/libstdc++-v3/include/pstl/unseq_backend_simd.h
+++ b/libstdc++-v3/include/pstl/unseq_backend_simd.h
@@ -22,7 +22,7 @@ namespace __unseq_backend
 {
 
 // Expect vector width up to 64 (or 512 bit)
-const std::size_t __lane_size = 64;
+inline const std::size_t __lane_size = 64;
 
 template <class _Iterator, class _DifferenceType, class _Function>
 _Iterator
diff --git a/libstdc++-v3/include/std/future b/libstdc++-v3/include/std/future
index b1e6a53..3c2baaa 100644
--- a/libstdc++-v3/include/std/future
+++ b/libstdc++-v3/include/std/future
@@ -1528,7 +1528,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
   template<typename _Signature, typename _Fn,
 	   typename _Alloc = std::allocator<int>>
-    static shared_ptr<__future_base::_Task_state_base<_Signature>>
+    shared_ptr<__future_base::_Task_state_base<_Signature>>
     __create_task_state(_Fn&& __fn, const _Alloc& __a = _Alloc())
     {
       typedef typename decay<_Fn>::type _Fn2;
diff --git a/libstdc++-v3/include/std/shared_mutex b/libstdc++-v3/include/std/shared_mutex
index f1bb5d7..9bf98c0 100644
--- a/libstdc++-v3/include/std/shared_mutex
+++ b/libstdc++-v3/include/std/shared_mutex
@@ -74,7 +74,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #ifdef __gthrw
 #define _GLIBCXX_GTHRW(name) \
   __gthrw(pthread_ ## name); \
-  static inline int \
+  inline int \
   __glibcxx_ ## name (pthread_rwlock_t *__rwlock) \
   { \
     if (__gthread_active_p ()) \
@@ -90,7 +90,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 # ifndef PTHREAD_RWLOCK_INITIALIZER
   _GLIBCXX_GTHRW(rwlock_destroy)
   __gthrw(pthread_rwlock_init);
-  static inline int
+  inline int
   __glibcxx_rwlock_init (pthread_rwlock_t *__rwlock)
   {
     if (__gthread_active_p ())
@@ -101,7 +101,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 # endif
 # if _GTHREAD_USE_MUTEX_TIMEDLOCK
    __gthrw(pthread_rwlock_timedrdlock);
-  static inline int
+  inline int
   __glibcxx_rwlock_timedrdlock (pthread_rwlock_t *__rwlock,
 				const timespec *__ts)
   {
@@ -111,7 +111,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return 0;
   }
    __gthrw(pthread_rwlock_timedwrlock);
-  static inline int
+  inline int
   __glibcxx_rwlock_timedwrlock (pthread_rwlock_t *__rwlock,
 				const timespec *__ts)
   {
@@ -122,33 +122,33 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   }
 # endif
 #else
-  static inline int
+  inline int
   __glibcxx_rwlock_rdlock (pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_rdlock (__rwlock); }
-  static inline int
+  inline int
   __glibcxx_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_tryrdlock (__rwlock); }
-  static inline int
+  inline int
   __glibcxx_rwlock_wrlock (pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_wrlock (__rwlock); }
-  static inline int
+  inline int
   __glibcxx_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_trywrlock (__rwlock); }
-  static inline int
+  inline int
   __glibcxx_rwlock_unlock (pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_unlock (__rwlock); }
-  static inline int
+  inline int
   __glibcxx_rwlock_destroy(pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_destroy (__rwlock); }
-  static inline int
+  inline int
   __glibcxx_rwlock_init(pthread_rwlock_t *__rwlock)
   { return pthread_rwlock_init (__rwlock, NULL); }
 # if _GTHREAD_USE_MUTEX_TIMEDLOCK
-  static inline int
+  inline int
   __glibcxx_rwlock_timedrdlock (pthread_rwlock_t *__rwlock,
 				const timespec *__ts)
   { return pthread_rwlock_timedrdlock (__rwlock, __ts); }
-  static inline int
+  inline int
   __glibcxx_rwlock_timedwrlock (pthread_rwlock_t *__rwlock,
 				const timespec *__ts)
   { return pthread_rwlock_timedwrlock (__rwlock, __ts); }