Suppressing warnings for a printf-like function in C++ - c++

Question

I have a legacy logging printf-like function in C:
namespace legacy
{
void DoLog(const char* format,...);
}
If is only visible if a corresponding macro is defined (this is legacy too):
#ifdef LOG
# define Log legacy::DoLog
#else
# define Log /* Nothing */
#endif
I have some C++ code, which calls this log like:
Log("Logging started!");
When the LOG macro is not defined, Log("Something"); turns into ("Something"); which is unused code.
I need to suppress these warnings in GCC, and do it only once, of course, so I wrap Log into MyLog as #define MyLog Log and try this:
#define MyLog(...) \
_Pragma("GCC diagnostic push"); \
_Pragma("GCC diagnostic ignored \"-Wunused-value\""); \
Log(__VA_ARGS__); \
_Pragma("GCC diagnostic pop");
But these pragmas for some reason do not have any effecthttps://gcc.gnu.org/onlinedocs/cpp/Pragmas.htmlhttps://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html
I would better use inline C++ wrapper with templates for the perfect wrapping, but I cannot cope with it yet...
Any suggestions how to suppress these warnings?
Thank you in advance!

Answer 1

Use
#define Log(...)
and then Log("Logging started!"); expands to just ; instead of ("Logging started!");

Answer 2

I managed to come to the two following solutions:
C++ style inline function, with suppressed warnings and basic Windows and Linux platform definitions used:
template<typename... Args>
inline void MyLog(const char* format, Args... args)
{
#ifndef LOG
# ifdef _MSC_VER // Windows
# pragma warning(push)
# pragma warning(disable: 4548)
# elif defined(__GNUC__) // Linux
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wunused-value"
# endif
#endif
Log(format, (args,...));
#ifndef LOG
# ifdef _MSC_VER // Windows
# pragma warning(pop)
# elif defined(__GNUC__) // Linux
# pragma GCC diagnostic pop
# endif
#endif
}
C style wrapper macro, even without any warnings suppression needed (thanks to #KamilCuk and #user253751):
#ifndef LOG
# define MyLog(...)
#else
# define MyLog(...) Log(__VA_ARGS__)
#endif