1 files changed, 48 insertions, 0 deletions
diff --git a/test/Modules/merge-lambdas.cpp b/test/Modules/merge-lambdas.cpp
new file mode 100644
index 0000000000000..d14483aa3aa76
--- /dev/null
+++ b/test/Modules/merge-lambdas.cpp
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -fmodules -verify %s
+// expected-no-diagnostics
+
+#pragma clang module build A
+module A {}
+#pragma clang module contents
+#pragma clang module begin A
+template<typename T> auto f() { return []{}; }
+#pragma clang module end
+#pragma clang module endbuild
+
+#pragma clang module build B
+module B {}
+#pragma clang module contents
+#pragma clang module begin B
+#pragma clang module import A
+inline auto x1() { return f<int>(); }
+inline auto z() { return []{}; }
+inline auto x2() { return z(); }
+#pragma clang module end
+#pragma clang module endbuild
+
+#pragma clang module build C
+module C {}
+#pragma clang module contents
+#pragma clang module begin C
+#pragma clang module import A
+inline auto y1() { return f<int>(); }
+inline auto z() { return []{}; }
+inline auto y2() { return z(); }
+inline auto q() { return []{}; }
+inline auto y3() { return q(); }
+#pragma clang module end
+#pragma clang module endbuild
+
+inline auto q() { return []{}; }
+inline auto x3() { return q(); }
+
+#pragma clang module import B
+#pragma clang module import C
+using T = decltype(x1);
+using T = decltype(y1);
+
+using U = decltype(x2);
+using U = decltype(y2);
+
+using V = decltype(x3);
+using V = decltype(y3);