Index: test/std/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp
===================================================================
--- test/std/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp
+++ test/std/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp
@@ -43,7 +43,7 @@
         v.push_back(1);
         assert(is_contiguous_container_asan_correct(v));
         v.shrink_to_fit();
-        assert(v.capacity() == 200);
+        LIBCPP_ASSERT(v.capacity() == 200); // assumes libc++'s 2x growth factor
         assert(v.size() == 101);
         assert(is_contiguous_container_asan_correct(v));
     }