Add a basic integration test for C++ smart pointers

Check that the debugger can pretty-print unique_ptr and shared_ptr when
passed as a function argument.

rdar://42314305

llvm-svn: 339961

debuginfo-tests/smart-ptr-1.cpp

@@ -0,0 +1,41 @@
+// RUN: %clangxx -std=c++14 %target_itanium_abi_host_triple -g %s -o %t.O0.out
+// RUN: %test_debuginfo %s %t.O0.out
+
+#include <memory>
+
+static volatile int sink;
+
+static void use_shared_ptr(std::shared_ptr<int> ptr) {
+  // DEBUGGER: break 10
+  sink = *ptr;
+}
+
+static void use_unique_ptr(std::unique_ptr<int> ptr) {
+  // DEBUGGER: break 15
+  sink = *ptr;
+}
+
+int main() {
+  auto sp_1 = std::make_shared<int>(1234);
+  use_shared_ptr(sp_1);
+
+  auto up_1 = std::make_unique<int>(5678);
+  use_unique_ptr(std::move(up_1));
+
+  return 0;
+}
+
+// DEBUGGER: r
+
+// (at line 10)
+// DEBUGGER: p ptr
+// CHECK: shared_ptr<int>
+// CHECK-SAME: 1234
+
+// DEBUGGER: c
+
+// (at line 16)
+// DEBUGGER: p ptr
+// CHECK: unique_ptr<int>
+// TODO: lldb's unique_ptr data formatter doesn't pretty-print its wrapped
+// object.