[gcc r16-4665] libstdc++: Add missing -pthread for new tests [PR122401]

[Jonathan Wakely]

https://gcc.gnu.org/g:935bebb2ce2f9245364cf77bd6804030890f5b62

commit r16-4665-g935bebb2ce2f9245364cf77bd6804030890f5b62
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Oct 24 11:38:22 2025 +0100

    libstdc++: Add missing -pthread for new tests [PR122401]
    
    These new multithreaded tests need -pthread for targets that don't
    include all pthreads symbols in libc (including older Glibc in
    particular).
    
    The 30_threads/shared_timed_mutex/try_lock_until/116586.cc test is not
    fixed by this commit, because it needs a different fix for older Glibc.
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/122401
            * testsuite/20_util/shared_ptr/atomic/pr118757.cc: Add -pthread
            for et pthread.
            * testsuite/20_util/weak_ptr/pr118757.cc: Likewise.
            * testsuite/30_threads/condition_variable/members/116586.cc:
            Likewise. Only run for hosted targets with gthreads support.
            * testsuite/30_threads/future/members/116586.cc: Likewise.
            * testsuite/30_threads/recursive_timed_mutex/try_lock_until/116586.cc:
            Likewise.
            * testsuite/30_threads/timed_mutex/try_lock_until/116586.cc:
            Likewise.

Diff:
---
 libstdc++-v3/testsuite/20_util/shared_ptr/atomic/pr118757.cc           | 1 +
 libstdc++-v3/testsuite/20_util/weak_ptr/pr118757.cc                    | 1 +
 libstdc++-v3/testsuite/30_threads/condition_variable/members/116586.cc | 3 +++
 libstdc++-v3/testsuite/30_threads/future/members/116586.cc             | 3 +++
 .../30_threads/recursive_timed_mutex/try_lock_until/116586.cc          | 3 +++
 libstdc++-v3/testsuite/30_threads/timed_mutex/try_lock_until/116586.cc | 3 +++
 6 files changed, 14 insertions(+)

diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/pr118757.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/pr118757.cc
index d54abd8a0392..f49ae38aa669 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/pr118757.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/pr118757.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 // { dg-require-effective-target hosted }
 
diff --git a/libstdc++-v3/testsuite/20_util/weak_ptr/pr118757.cc b/libstdc++-v3/testsuite/20_util/weak_ptr/pr118757.cc
index f048f13aec25..77757f3c6c2a 100644
--- a/libstdc++-v3/testsuite/20_util/weak_ptr/pr118757.cc
+++ b/libstdc++-v3/testsuite/20_util/weak_ptr/pr118757.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 // { dg-require-effective-target hosted }
 
diff --git a/libstdc++-v3/testsuite/30_threads/condition_variable/members/116586.cc b/libstdc++-v3/testsuite/30_threads/condition_variable/members/116586.cc
index 71140078d418..e8c3e1634e27 100644
--- a/libstdc++-v3/testsuite/30_threads/condition_variable/members/116586.cc
+++ b/libstdc++-v3/testsuite/30_threads/condition_variable/members/116586.cc
@@ -1,4 +1,7 @@
 // { dg-do run { target c++11 } }
+// { dg-additional-options "-pthread" { target pthread } }
+// { dg-require-gthreads "" }
+// { dg-require-effective-target hosted }
 
 #include <condition_variable>
 #include <chrono>
diff --git a/libstdc++-v3/testsuite/30_threads/future/members/116586.cc b/libstdc++-v3/testsuite/30_threads/future/members/116586.cc
index b7cd12c6009c..82f1e5c1be24 100644
--- a/libstdc++-v3/testsuite/30_threads/future/members/116586.cc
+++ b/libstdc++-v3/testsuite/30_threads/future/members/116586.cc
@@ -1,4 +1,7 @@
 // { dg-do run { target c++11 } }
+// { dg-additional-options "-pthread" { target pthread } }
+// { dg-require-gthreads "" }
+// { dg-require-effective-target hosted }
 
 #include <future>
 #include <chrono>
diff --git a/libstdc++-v3/testsuite/30_threads/recursive_timed_mutex/try_lock_until/116586.cc b/libstdc++-v3/testsuite/30_threads/recursive_timed_mutex/try_lock_until/116586.cc
index 941f3af16b98..25a78e72f465 100644
--- a/libstdc++-v3/testsuite/30_threads/recursive_timed_mutex/try_lock_until/116586.cc
+++ b/libstdc++-v3/testsuite/30_threads/recursive_timed_mutex/try_lock_until/116586.cc
@@ -1,4 +1,7 @@
 // { dg-do run { target c++11 } }
+// { dg-additional-options "-pthread" { target pthread } }
+// { dg-require-gthreads "" }
+// { dg-require-effective-target hosted }
 
 #include <mutex>
 #include <chrono>
diff --git a/libstdc++-v3/testsuite/30_threads/timed_mutex/try_lock_until/116586.cc b/libstdc++-v3/testsuite/30_threads/timed_mutex/try_lock_until/116586.cc
index dcba7aa2f8ca..156622818912 100644
--- a/libstdc++-v3/testsuite/30_threads/timed_mutex/try_lock_until/116586.cc
+++ b/libstdc++-v3/testsuite/30_threads/timed_mutex/try_lock_until/116586.cc
@@ -1,4 +1,7 @@
 // { dg-do run { target c++11 } }
+// { dg-additional-options "-pthread" { target pthread } }
+// { dg-require-gthreads "" }
+// { dg-require-effective-target hosted }
 
 #include <chrono>
 #include <mutex>