[modules] When finding the owning module of an instantiated context in template

instantiation, follow lexical parents not semantic ones: we want to find the
module where the pattern was written.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316055 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 51 insertions, 0 deletions

diff --git a/test/Modules/visibility-in-instantiation.cpp b/test/Modules/visibility-in-instantiation.cpp
new file mode 100644
index 0000000000..8689758a42
--- /dev/null
+++ b/test/Modules/visibility-in-instantiation.cpp
@@ -0,0 +1,51 @@
+// RUN: %clang_cc1 -std=c++11 -fmodules %s -verify
+
+#pragma clang module build M
+  module M { module A {} module B {} module C {} }
+#pragma clang module contents
+  
+  #pragma clang module begin M.A
+    template<typename U> struct X {
+      template<typename T> void f();
+    };
+  #pragma clang module end
+  
+  #pragma clang module begin M.B
+    template<typename T, typename U = void> struct ST { static void f(); };
+  #pragma clang module end
+  
+  #pragma clang module begin M.C
+    template<typename U> struct X;
+    void foo(X<int>);
+  #pragma clang module end
+#pragma clang module endbuild
+
+#pragma clang module build N
+  module N {}
+#pragma clang module contents
+  #pragma clang module begin N
+    #pragma clang module import M.B // not re-exported
+
+    template<typename U> struct X {
+      template<typename T> void f();
+      template<typename T> void g();
+    };
+
+    template<typename U> template<typename T>
+    void X<U>::f() {
+      ST<T>::f(); // definition and default argument found in M.B
+      foo(*this); // found by ADL in M.C
+    };
+
+    #pragma clang module import M.C // not re-exported
+  #pragma clang module end
+#pragma clang module endbuild
+
+#pragma clang module import N
+void g() {
+  X<int>().f<int>();
+
+  ST<int>::f(); // expected-error {{must be imported from module 'M.B'}}
+  foo(X<int>()); // expected-error {{must be imported from module 'M.C'}}
+  // expected-note@* 2{{previous declaration is here}}
+}