Question in-line.
Best regards
Michael
On Feb 12, 2007, at 3:39 PM, Gerhard Gappmeier wrote:
In fact it should be used like:
void method(int foo _U_)
which should become
void method(int foo __attribute__((unused)))
I'm not sure if _U_ is implemented for anything other than GCC,
though.
What compiler are you using?
ok, I See.
I'm using MSVC6 on XP and GCC on Gentoo.
I just want a solution that works on every platform.
I didn't know this unused attribute of GCC,
but referencing the variable in the code is normally a good idea.
MSVC does not complain at all until you use warning level 4, what I
generally do.
void method(int foo)
{
foo;
}
does the job for MSVC
But this causes a "statement has not effect" waning with gcc -Wall.
void method(int foo)
{
(void)foo;
}
does the job for both.
So
#define REFERENCE_PARAMETER(name) (void)name;
works good for me.
void method(int foo)
{
REFERENCE_PARAMETER(foo);
}
The intel compiler is a little bit different, that's why trolltech
uses
this kind of define.
#if defined(Q_CC_INTEL) && !defined(Q_OS_WIN)
template <typename T>
inline void qUnused(T &x) { (void)x; }
# define Q_UNUSED(x) qUnused(x);
#else
# define Q_UNUSED(x) (void)x;
#endif
Isn't it C++? Wireshark uses only C.
Are there any reasons to not use such a kind of macro?
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