1 files changed, 11 insertions, 0 deletions
diff --git a/test/Modules/Inputs/cxx-linkage-cache.h b/test/Modules/Inputs/cxx-linkage-cache.h
new file mode 100644
index 0000000..df82927
--- /dev/null
+++ b/test/Modules/Inputs/cxx-linkage-cache.h
@@ -0,0 +1,11 @@
+// Reduced from a crash encountered with a modularized libc++, where
+// we would try to compute the linkage of a declaration before we
+// finish loading the relevant pieces of it.
+inline namespace D {
+  template<class>
+  struct U {
+    friend bool f(const U &);
+  };
+
+  template class U<int>;
+}