Allow anonymous and local types. The support was already in place for these,

but this makes them work even as an extension in C++98. This resolves PR8077.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113011 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 40 insertions, 0 deletions

diff --git a/test/CodeGenCXX/template-anonymous-types.cpp b/test/CodeGenCXX/template-anonymous-types.cpp
new file mode 100644
index 0000000000..0b219ffc12
--- /dev/null
+++ b/test/CodeGenCXX/template-anonymous-types.cpp
@@ -0,0 +1,40 @@
+// RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -emit-llvm -o - | FileCheck %s
+
+struct S {
+  enum { FOO = 42 };
+  enum { BAR = 42 };
+};
+
+template <typename T> struct X {
+  T value;
+
+  X(T t) : value(t) {}
+
+  // Again, two instantiations should be present.
+  int f() { return value; }
+};
+
+template <typename T> int f(T t) {
+  X<T> x(t);
+  return x.f();
+}
+
+void test() {
+  // Look for two instantiations, entirely internal to this TU, one for FOO's
+  // type and one for BAR's.
+  // CHECK: define internal i32 @"_Z1fIN1S3$_0EEiT_"(i32 %t)
+  (void)f(S::FOO);
+  // CHECK: define internal i32 @"_Z1fIN1S3$_1EEiT_"(i32 %t)
+  (void)f(S::BAR);
+
+  // Now check for the class template instantiations. Annoyingly, they are in
+  // reverse order.
+  //
+  // BAR's instantiation of X:
+  // CHECK: define internal i32 @"_ZN1XIN1S3$_1EE1fEv"(%struct.X* %this)
+  // CHECK: define internal void @"_ZN1XIN1S3$_1EEC2ES1_"(%struct.X* %this, i32 %t)
+  //
+  // FOO's instantiation of X:
+  // CHECK: define internal i32 @"_ZN1XIN1S3$_0EE1fEv"(%struct.X* %this)
+  // CHECK: define internal void @"_ZN1XIN1S3$_0EEC2ES1_"(%struct.X* %this, i32 %t)
+}