• Johnny Willemsen (11/11) Sep 23 2004 Hi,
• W³odzimierz Skiba (14/17) Sep 23 2004 In wxWidgets we have:
• Johnny Willemsen (8/25) Sep 24 2004 Hi,
• Walter (6/16) Sep 30 2004 but

"Johnny Willemsen" <jwillemsen remedy.nl> writes:

Hi,

When building ACE/TAO I get the warning: Warning 6: value of expression is 
not used

In ACE/TAO we use a macro ACE_UNUSED_ARG for arguments which are there, but 
not used under certain conditions. The macro is defined as

or


But both don't suppress the warning with DMC? Anyone an idea how to get rid 
of warning 6, with such a macro, we don't want do disable it completely.

Johnny

"W³odzimierz Skiba" <abx abx.art.pl> writes:

"Johnny Willemsen" <jwillemsen remedy.nl> wrote in
news:ciuli7$1d7s$1 digitaldaemon.com: 

 Anyone an idea how to
 get rid of warning 6, with such a macro, we don't want do disable it
 completely. 

In wxWidgets we have:

    #define WXUNUSED(identifier)

    #ifdef __BORLANDC__

    #else
        template <class T>
            inline void wxUnusedVar(const T& WXUNUSED(t)) { }
    #endif

and then write code which afaik works with all c++ compilers we support 
(including DMC):

    wxUnusedVar(some_variable);

ABX

"Johnny Willemsen" <jwillemsen remedy.nl> writes:

Hi,

Thanks for this, I have added such a construct also to ACE. I only observed 
that the template way of doing this, increases the size of the app a little, 
the do/while solution is optimized out by the compiler, the template 
probably not.

Johnny

"W³odzimierz Skiba" <abx abx.art.pl> wrote in message 
news:ciurr4$1j0m$1 digitaldaemon.com...
 "Johnny Willemsen" <jwillemsen remedy.nl> wrote in
 news:ciuli7$1d7s$1 digitaldaemon.com:

 Anyone an idea how to
 get rid of warning 6, with such a macro, we don't want do disable it
 completely.

 In wxWidgets we have:

    #define WXUNUSED(identifier)

    #ifdef __BORLANDC__

    #else
        template <class T>
            inline void wxUnusedVar(const T& WXUNUSED(t)) { }
    #endif

 and then write code which afaik works with all c++ compilers we support
 (including DMC):

    wxUnusedVar(some_variable);

 ABX 

"Walter" <newshound digitalmars.com> writes:

"Johnny Willemsen" <jwillemsen remedy.nl> wrote in message
news:ciuli7$1d7s$1 digitaldaemon.com...
 Hi,

 When building ACE/TAO I get the warning: Warning 6: value of expression is
 not used

 In ACE/TAO we use a macro ACE_UNUSED_ARG for arguments which are there,

but
 not used under certain conditions. The macro is defined as

 or


 But both don't suppress the warning with DMC? Anyone an idea how to get

rid
 of warning 6, with such a macro, we don't want do disable it completely.

-w6

see www.digitalmars.com/ctg/sc.html#dashw