1 files changed, 96 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/linkage.cpp b/clang/test/SemaCXX/linkage.cpp
new file mode 100644
index 0000000..6b73d59
--- /dev/null
+++ b/clang/test/SemaCXX/linkage.cpp
@@ -0,0 +1,96 @@
+// This is an IR generation test because the calculation of visibility
+// during IR gen will cause linkage to be implicitly recomputed and
+// compared against the earlier cached value.  If we had a way of
+// testing linkage directly in Sema, that would be better.
+
+// RUN: %clang_cc1 -Werror -triple x86_64-apple-darwin10 -emit-llvm %s -o - | FileCheck %s
+
+// PR8926
+namespace test0 {
+  typedef struct {
+    void *foo() { return 0; }
+  } A;
+
+  // CHECK: define linkonce_odr i8* @_ZN5test01A3fooEv(
+
+  void test(A *a) {
+    a->foo();
+  }
+}
+
+namespace test1 {
+  typedef struct {
+    template <unsigned n> void *foo() { return 0; }
+
+    void foo() {
+      foo<0>();
+    }
+  } A;
+
+  // CHECK: define linkonce_odr void @_ZN5test11A3fooEv(
+  // another at the end
+
+  void test(A *a) {
+    a->foo();
+  }
+}
+
+namespace test2 {
+  typedef struct {
+    template <unsigned n> struct B {
+      void *foo() { return 0; }
+    };
+
+    void foo(B<0> *b) {
+      b->foo();
+    }
+  } A;
+
+  // CHECK: define linkonce_odr void @_ZN5test21A3fooEPNS0_1BILj0EEE(
+
+  void test(A *a) {
+    a->foo(0);
+  }
+}
+
+namespace test3 {
+  namespace { struct A {}; }
+
+  // CHECK: define internal void @_ZN5test34testENS_12_GLOBAL__N_11AE(
+  void test(A a) {}
+  void force() { test(A()); }
+
+  // CHECK: define void @test3(
+  extern "C" void test3(A a) {}
+}
+
+namespace {
+  // CHECK: define void @test4(
+  extern "C" void test4(void) {}
+}
+
+// PR9316: Ensure that even non-namespace-scope function declarations in
+// a C declaration context respect that over the anonymous namespace.
+extern "C" {
+  namespace {
+    struct X {
+      int f() {
+        extern int g();
+        extern int a;
+
+        // Test both for mangling in the code generation and warnings from use
+        // of internal, undefined names via -Werror.
+        // CHECK: call i32 @g(
+        // CHECK: load i32* @a,
+        return g() + a;
+      }
+    };
+  }
+  // Force the above function to be emitted by codegen.
+  int test(X& x) {
+    return x.f();
+  }
+}
+
+// CHECK: define linkonce_odr i8* @_ZN5test21A1BILj0EE3fooEv(
+// CHECK: define linkonce_odr i8* @_ZN5test11A3fooILj0EEEPvv(