Incorrect Doxygen comments generated for certain C functions

Environment

• OS and Version: Windows 11 22H2 (x64)
• VS Code Version: 1.80.2
• C/C++ Extension Version: 1.16.3

Bug Summary and Steps to Reproduce

Bug Summary:

• Auto-generation of Doxygen comments for C functions breaks whenever the return type contains struct, enum or pointer to a forward-declared union.
• Additionally, when a C function is of the form return_type func(void), an extra @param entry is generated.

Steps to reproduce:

1. Create a new C file with the following content:

   struct Bar {};
   union Bar2;
   
   enum Bar3 {
       BAR
   };
   
   typedef struct Bar *BarType;
   
   int *foo(int bar);
   
   struct Bar foo_broken(int bar);
   union Bar2 *foo_broken2(int bar);
   enum Bar3 foo_broken3(int bar);
   
   unsigned long long int foo2(void);
   BarType foo3(int bar);
   
   int foo_broken_param(void);
   

2. Type /// above each function (or just use the context menu) to generate Doxygen comments.
3. Obtain incorrect/truncated Doxygen comments:

   /// @brief 
   /// @param bar 
   /// @return 
   int *foo(int bar);  // correct (normal function)
   
   /// @brief 
   struct Bar foo_broken(int bar);     // truncated
   
   /// @brief 
   union Bar2 *foo_broken2(int bar);   // truncated
   
   /// @brief 
   enum Bar3 foo_broken3(int bar);     // truncated
   
   /// @brief 
   /// @param bar 
   /// @return 
   unsigned long long int foo2(int bar); // correct, despite having multiple tokens in the return type
   
   /// @brief 
   /// @param bar 
   /// @return 
   BarType foo3(int bar);      // correct, because `struct` is not present
   
   /// @brief 
   /// @param  
   /// @return 
   int foo_broken_param(void); // incorrect, an extra unnamed parameter is generated
   

Expected behavior:
Having

/// @brief  
/// @return 

generated for foo_broken_param (which doesn't take any parameters), and

/// @brief 
/// @param  
/// @return 

generated for every other function.

Configuration and Logs

c_cpp_properties.json: (Default Settings)

Other Extensions

No response

Additional context

No response

Inizia riproducendo il problema in un file C usando le dichiarazioni e i passaggi di generazione di Doxygen riportati nel report. Traccia la generazione dei commenti Doxygen dell’estensione C/C++ per i tipi restituiti che contengono struct, enum o una union dichiarata in avanti, e per le funzioni con parametri void. Il lavoro è completato quando i commenti generati omettono il parametro per func(void) e preservano le voci @param e @return previste per le altre funzioni.