diff --git a/clang/lib/run_the_clang_CI b/clang/lib/run_the_clang_CI
new file mode 100644
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -1416,7 +1416,10 @@
     module extent                              { private header "__type_traits/extent.h" }
     module has_unique_object_representation    { private header "__type_traits/has_unique_object_representation.h" }
     module has_virtual_destructor              { private header "__type_traits/has_virtual_destructor.h" }
-    module integral_constant                   { private header "__type_traits/integral_constant.h" }
+    module integral_constant                   {
+      private header "__type_traits/integral_constant.h"
+      export type_traits.common_reference
+    }
     module is_abstract                         { private header "__type_traits/is_abstract.h" }
     module is_aggregate                        { private header "__type_traits/is_aggregate.h" }
     module is_allocator                        { private header "__type_traits/is_allocator.h" }