Re: Name mangling issue with HP, Sun, Tru64 UNIX C++ but not GCC

[Andrew Pinski]

> 
> We ran into a problem building KDE on HP-UX 11.23/IA with the HP C++
> compiler. The compiler mangled a function name in a .cpp file though
> it was declared extern "C" in the .h file. After a post to the HP C++
> developers list, we were told this behavior is correct. GCC 4.0.2 does
> not do this so I'd like to get your opinion.
> 
> $ cat mangle-1.cc
> typedef enum {
>   XSLDBG_MSG_THREAD_NOTUSED,
>   XSLDBG_MSG_THREAD_INIT
> } XsldbgMessageEnum;
> 
> extern "C" {
>   void xsldbgSetAppFunc (int (*notifyXsldbgAppFunc) (XsldbgMessageEnum type,
>                                                      const void *data));
> }
> 
> static int (*notifyXsldbgAppFuncPtr) (XsldbgMessageEnum type,
>                                       const void *data) = 0;
> 
> void xsldbgSetAppFunc (int (*notifyXsldbgAppFunc) (XsldbgMessageEnum type,
>                                                    const void *data))
> {
>   notifyXsldbgAppFuncPtr = notifyXsldbgAppFunc;
> }

This is most likely very related to PR 2316 where GCC does not use language
as the overloaded part.  

-- Pinski