Janitor: list.h functions defined but not used

[Glenn L. McGrath]

Hi all, im new to the list, im interested in grinding away at some of
the warnings wine generates...

make depend was complaining about some static inline functions that it
thinks arent used, this patch uses __attribute__ ((used)) to disable the warning.

Glenn

[Austin English]

On Sun, Apr 19, 2009 at 8:00 PM, Glenn L. McGrath  wrote:
> Hi all, im new to the list, im interested in grinding away at some of
> the warnings wine generates...
>
> make depend was complaining about some static inline functions that it
> thinks arent used, this patch uses __attribute__ ((used)) to disable the warning.
>
> Glenn

Patches should be sent to [e-mail].

[Jeremy White]

Glenn L. McGrath wrote:
> Hi all, im new to the list, im interested in grinding away at some of
> the warnings wine generates...

Welcome to Wine, and thanks!

Be cautioned that open source projects can be brutal and mean places.

I think Wine is one of the nicer ones, but that mostly means that our common
evil is to ignore you.  Please don't feel hurt if that happens; I'd suggest
reading the web site for hints if you get stymied, and hanging out on irc at
#winehackers is often a good way to get more informal and chatty help.

Cheers,

Jeremy

[James McKenzie]

Glenn L. McGrath wrote:
> Hi all, im new to the list, im interested in grinding away at some of
> the warnings wine generates...
>
> make depend was complaining about some static inline functions that it
> thinks arent used, this patch uses __attribute__ ((used)) to disable the warning.
>
> Glenn

Glenn:

What compiler was complaining about the static inline problem?  Your
solution may cause problems with other compilers.

James McKenzie

[Henri Verbeet]

2009/4/20 James McKenzie :
> What compiler was complaining about the static inline problem?  Your
> solution may cause problems with other compilers.

More specifically, you need to protect this with an #ifdef.

E.g.:

#ifdef __GNUC__
#define __WINE_ATTR_UNUSED __attribute__((unused))
#else
#define __WINE_ATTR_UNUSED
#endif
...
static inline void __WINE_ATTR_UNUSED list_add_head( struct list
*list, struct list *elem )
{
...
}

[Detlef Riekenberg]

On Mo, 2009-04-20 at 10:01 +0200, Henri Verbeet wrote:
> More specifically, you need to protect this with an #ifdef.
> #ifdef __GNUC__
> #define __WINE_ATTR_UNUSED __attribute__((unused))
> #else
> #define __WINE_ATTR_UNUSED
> #endif

Support for compiler specific features should be tested during
configure.

[Henri Verbeet]

2009/4/20 Detlef Riekenberg :
> Support for compiler specific features should be tested during
> configure.

What would that look like, approximately?

[Reece Dunn]

2009/4/20 Detlef Riekenberg :
> On Mo, 2009-04-20 at 10:01 +0200, Henri Verbeet wrote:
> > More specifically, you need to protect this with an #ifdef.
> > #ifdef __GNUC__
> > #define __WINE_ATTR_UNUSED __attribute__((unused))
> > #else
> > #define __WINE_ATTR_UNUSED
> > #endif
>
> Support for compiler specific features should be tested during
> configure.
> From http://autoconf-archive.cryp.to/ax_c___attribute__.html:

AC_DEFUN([AX_C___ATTRIBUTE__], [
  AC_CACHE_CHECK([for __attribute__], [ax_cv___attribute__],
    [AC_COMPILE_IFELSE(
      [AC_LANG_PROGRAM(
        [[#include <stdlib.h>
          static void foo(void) __attribute__ ((unused));
          static void
          foo(void) {
              exit(1);
          }
        ]], [])],
      [ax_cv___attribute__=yes],
      [ax_cv___attribute__=no]
    )
  ])
  if test "$ax_cv___attribute__" = "yes"; then
    AC_DEFINE([HAVE___ATTRIBUTE__], 1, [define if your compiler has
__attribute__])
  fi
])

then:

#ifdef HAVE___ATTRIBUTE__
#define __WINE_ATTR_UNUSED __attribute__((unused))
#else
#define __WINE_ATTR_UNUSED
#endif

- Reece