Don't cache the artificial type for the this pointer, there's no

difference in the qual type. This is a workaround for the fact that
the type isn't artificial but the this decl is, however, we don't
have any way of representing it in the current metadata. For now,
however, just don't cache the full type.

Fixes rdar://10831526 and probably a couple of others.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150159 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 29 insertions, 0 deletions

diff --git a/test/CodeGenCXX/debug-info-artificial-arg.cpp b/test/CodeGenCXX/debug-info-artificial-arg.cpp
new file mode 100644
index 0000000000..a8438453e9
--- /dev/null
+++ b/test/CodeGenCXX/debug-info-artificial-arg.cpp
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -emit-llvm -g -triple x86_64-apple-darwin %s -o - | FileCheck %s
+
+template<class X> class B {
+public:
+  explicit B(X* p = 0);
+};
+
+class A
+{
+public:
+  A(int value) : m_a_value(value) {};
+  A(int value, A* client_A) : m_a_value (value), m_client_A (client_A) {}
+
+  virtual ~A() {}
+
+private:
+  int m_a_value;
+  B<A> m_client_A;
+};
+
+int main(int argc, char **argv) {
+  A reallyA (500);
+}
+
+// FIXME: The numbers are truly awful.
+// CHECK: !22 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !5} ; [ DW_TAG_pointer_type ]
+// CHECK: metadata !5, metadata !"A", metadata !"A", metadata !"", metadata !6, i32 12, metadata !34, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !36} ; [ DW_TAG_subprogram ]
+// CHECK: metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !35, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
+// CHECK: !35 = metadata !{null, metadata !30, metadata !13, metadata !22}