Fix issue with functions returning functions

src/libclang/function_parser.cpp

@@ -31,6 +31,10 @@ namespace
     template <class Builder>
     void add_parameters(const detail::parse_context& context, Builder& builder, const CXCursor& cur)
     {
+        if (clang_getCursorKind(cur) == CXCursor_FunctionTemplate)
+        {
+            // clang_Cursor_getNumArguments() doesn't work here
+            // (of course it doesn't...)
             detail::visit_children(cur, [&](const CXCursor& child) {
                 if (clang_getCursorKind(child) != CXCursor_ParmDecl)
                     return;
@@ -46,6 +50,23 @@ namespace
                 }
             });
         }
+        else
+        {
+            auto no = clang_Cursor_getNumArguments(cur);
+            DEBUG_ASSERT(no != -1, detail::parse_error_handler{}, cur,
+                         "unexpected number of arguments");
+            for (auto i = 0; i != no; ++i)
+                try
+                {
+                    auto parameter = parse_parameter(context, clang_Cursor_getArgument(cur, i));
+                    builder.add_parameter(std::move(parameter));
+                }
+                catch (detail::parse_error& ex)
+                {
+                    context.logger->log("libclang parser", ex.get_diagnostic());
+                }
+        }
+    }
 
     bool is_templated_cursor(const CXCursor& cur)
     {

test/code_generator.cpp

@@ -15,13 +15,13 @@ TEST_CASE("code_generator")
 struct foo{
   int a;
 
-  auto func(int)->int(*)[];
+  auto func(int)->int(*(*)(int))[42];
 
 private:
   int const b=42;
 };
 
-int(*(foo::* mptr)(int))[];
+int(*(*(foo::* mptr)(int))(int))[42];
 
 enum class bar
 :int{

test/test_parser.hpp

@@ -32,7 +32,7 @@ inline std::unique_ptr<cppast::cpp_file> parse(const cppast::cpp_entity_index& i
     libclang_compile_config config;
     config.set_flags(cpp_standard::cpp_latest);
 
-    static stderr_diagnostic_logger logger;
+    stderr_diagnostic_logger logger;
     libclang_parser          p(type_safe::ref(logger));
 
     auto result = p.parse(idx, name, config);