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-rw-r--r--libstdc++-v3/testsuite/23_containers/vector/cons/constexpr.cc7
1 files changed, 7 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/23_containers/vector/cons/constexpr.cc b/libstdc++-v3/testsuite/23_containers/vector/cons/constexpr.cc
index f5d2f08faf2..e6324ad4a0a 100644
--- a/libstdc++-v3/testsuite/23_containers/vector/cons/constexpr.cc
+++ b/libstdc++-v3/testsuite/23_containers/vector/cons/constexpr.cc
@@ -3,6 +3,13 @@
// { dg-xfail-if "not supported" { debug_mode } }
#include <vector>
+
+#ifndef __cpp_lib_constexpr_vector
+# error "Feature test macro for constexpr vector is missing in <vector>"
+#elif __cpp_lib_constexpr_vector != 201907L
+# error "Feature test macro for constexpr vector has wrong value in <vector>"
+#endif
+
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>