[lldb][test] Add tests for evaluating local variables whose name clashes with Objective-C types (#87807)

Depends on #87767

Author: Michael137

lldb/test/API/lang/objcxx/objc-builtin-types/TestObjCBuiltinTypes.py

@@ -13,6 +13,7 @@ def setUp(self):
         # Find the line numbers to break inside main().
         self.main_source = "main.cpp"
         self.break_line = line_number(self.main_source, "// Set breakpoint here.")
+        self.bar_break_line = line_number(self.main_source, "return id + Class")
 
     @add_test_categories(["pyapi"])
     def test_with_python_api(self):
@@ -26,6 +27,11 @@ def test_with_python_api(self):
         bpt = target.BreakpointCreateByLocation(self.main_source, self.break_line)
         self.assertTrue(bpt, VALID_BREAKPOINT)
 
+        bar_bpt = target.BreakpointCreateByLocation(
+            self.main_source, self.bar_break_line
+        )
+        self.assertTrue(bar_bpt, VALID_BREAKPOINT)
+
         # Now launch the process, and do not stop at entry point.
         process = target.LaunchSimple(None, None, self.get_process_working_directory())
 
@@ -52,3 +58,10 @@ def test_with_python_api(self):
             patterns=["\(id\) \$.* = nil"],
         )
         self.expect("expr --language C++ -- id my_id = 0; my_id", error=True)
+
+        lldbutil.continue_to_breakpoint(process, bar_bpt)
+
+        self.expect_expr("id", result_value="12", result_type="int")
+        self.expect_expr("Class", result_value="15", result_type="int")
+        self.expect("expr --language Objective-C++ -- id", error=True)
+        self.expect("expr --language Objective-C++ -- Class", error=True)

lldb/test/API/lang/objcxx/objc-builtin-types/main.cpp

@@ -2,8 +2,14 @@ namespace ns {
   typedef int id;
 };
 
+int bar() {
+  int id = 12;
+  int Class = 15;
+  return id + Class;
+}
+
 int main()
 {
   ns::id foo = 0;
-  return foo; // Set breakpoint here.
+  return foo + bar(); // Set breakpoint here.
 }