Explicitly link with libatomic when needed.

	2020-02-29  John David Anglin  <danglin@gcc.gnu.org>

	* testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic
	option.
	* testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
	Likewise.
	* testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise.
	* testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise.
	* testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise.
	* testsuite/30_threads/stop_token/stop_source.cc: Likewise.
	* testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise.
	* testsuite/30_threads/stop_token/stop_token.cc: Likewise.
	* testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
	Likewise.

10 files changed, 22 insertions, 0 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index f2242e1..85a0cf2 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,18 @@
 2020-02-29  John David Anglin  <danglin@gcc.gnu.org>
 
+	* testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic
+	option.
+	* testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
+	Likewise.
+	* testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise.
+	* testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise.
+	* testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise.
+	* testsuite/30_threads/stop_token/stop_source.cc: Likewise.
+	* testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise.
+	* testsuite/30_threads/stop_token/stop_token.cc: Likewise.
+	* testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
+	Likewise.
+
 	PR libstdc++/92906
 	* config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
 
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback.cc
index da44f8a..b84d3af 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc
index 12c54db..96f7197 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a -pthread"  }
+// { dg-add-options libatomic }
 // { dg-require-effective-target c++2a }
 // { dg-require-effective-target pthread }
 // { dg-require-gthreads "" }
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock.cc
index f9de6e0..c59446c 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc
index 3fa4d21..b94743a 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a -pthread"  }
+// { dg-add-options libatomic }
 // { dg-require-effective-target c++2a }
 // { dg-require-effective-target pthread }
 // { dg-require-gthreads "" }
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/invoke.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/invoke.cc
index 9b8137c..dc12112 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/invoke.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/invoke.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_source.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_source.cc
index 9d15f07..7b2ae70 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_source.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_source.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/assign.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/assign.cc
index c822e8e..5aaaa05 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/assign.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/assign.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_token.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_token.cc
index f8adc42..2ab1676 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_token.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_token.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_token/stop_possible.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_token/stop_possible.cc
index ee8de68..4ac45b6 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_token/stop_possible.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_token/stop_possible.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++2a" }
+// { dg-add-options libatomic }
 // { dg-do run { target c++2a } }
 
 #include <stop_token>