[lldb][test] TestExprDefinitionInDylib.py: add cases for calling ctors

Author: Michael137

lldb/test/API/lang/cpp/expr-definition-in-dylib/TestExprDefinitionInDylib.py

@@ -31,3 +31,10 @@ def test(self):
         )
 
         self.expect_expr("f.method()", result_value="-72", result_type="int")
+        self.expect_expr("Foo()", result_type="Foo")
+
+        # FIXME: mangled name lookup for ABI-tagged ctors fails because
+        # the debug-info AST doesn't have ABI-tag information.
+        self.expect(
+            "expr Bar()", error=True, substrs=["error: Couldn't look up symbols"]
+        )

lldb/test/API/lang/cpp/expr-definition-in-dylib/lib.cpp

@@ -1,3 +1,13 @@
 #include "lib.h"
 
+#include <cstdio>
+
 int Foo::method() { return -72; }
+
+Foo::Foo() { std::puts(__func__); }
+
+Foo::~Foo() { std::puts(__func__); }
+
+Bar::Bar() { std::puts(__func__); }
+
+Bar::~Bar() { std::puts(__func__); }

lldb/test/API/lang/cpp/expr-definition-in-dylib/lib.h

@@ -3,6 +3,13 @@
 
 struct Foo {
   int method();
+  Foo();
+  ~Foo();
+};
+
+struct Bar {
+  [[gnu::abi_tag("Ctor")]] Bar();
+  [[gnu::abi_tag("Dtor")]] ~Bar();
 };
 
 #endif // LIB_H_IN

lldb/test/API/lang/cpp/expr-definition-in-dylib/main.cpp

@@ -2,5 +2,6 @@
 
 int main() {
   Foo f;
+  Bar b;
   return f.method();
 }