1 files changed, 10 insertions, 5 deletions

diff --git a/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp b/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp
index 77916a496fcf..088989fe96c1 100644
--- a/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp
+++ b/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp
@@ -12,27 +12,32 @@
 //   insert_iterator<Cont>
 //   inserter(Cont& x, Cont::iterator i);
 
+#include <cassert>
 #include <iterator>
 #include <vector>
-#include <cassert>
-#include "nasty_containers.h"
 
 #include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
 
 template <class C>
-void
+TEST_CONSTEXPR_CXX20 bool
 test(C c)
 {
     std::insert_iterator<C> i = std::inserter(c, c.end());
     i = 0;
     assert(c.size() == 1);
     assert(c.back() == 0);
+    return true;
 }
 
 int main(int, char**)
 {
     test(std::vector<int>());
     test(nasty_vector<int>());
-
-  return 0;
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
 }