Merge trunk@230365.c++-delayed-folding

git-svn-id: https://gcc.gnu.org/svn/gcc/branches/c++-delayed-folding@230367 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 22 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/experimental/type_erased_allocator/uses_allocator.cc b/libstdc++-v3/testsuite/experimental/type_erased_allocator/uses_allocator.cc
new file mode 100644
index 00000000000..fc8acf16dcd
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/type_erased_allocator/uses_allocator.cc
@@ -0,0 +1,22 @@
+#include <bits/uses_allocator.h>
+#include <vector>
+#include <experimental/utility>
+#include <memory>
+
+using std::vector;
+using std::allocator;
+using std::uses_allocator;
+
+struct A {
+  using allocator_type = std::experimental::erased_type;
+};
+
+void test01() {
+    static_assert(uses_allocator<vector<int>, allocator<int>>());
+    static_assert(uses_allocator<A, allocator<A>>());
+}
+
+int main() {
+  test01();
+  return 0;
+}