Empty statements and preprocessor control flow

[AsFoxy]

Empty statements are treated as errors:

_x =
{
    ;
};

The error was initially caused by this:

#define DEBUG_LOG_TRACE

#define Debug_Log_Impl(mode, message) (diag_log format ['mode: %1', message])

#ifdef DEBUG_LOG_TRACE
	#define Debug_LogTrace(message) Debug_Log_Impl(TRACE,message)
#else
	#define Debug_LogTrace(message)
#endif

Debug_LogTrace("");

_exit =
{
	endMission "END1";
};

It seems that the preprocessor flow control is ignored, and Debug_LogTrace("") is incorrectly expanded as nothing, creating an empty statement. The empty statement in itself is of course perfectly valid.

[SkaceKamen]

I'm unable to replicate this issue. Is it possible it's caused by some code before this statement?

[AsFoxy]

It seems the problem is actually empty statements i.e.

_x =
{
    ;
};

The error was initially caused by this:

#define DEBUG_LOG_TRACE

#define Debug_Log_Impl(mode, message) (diag_log format ['mode: %1', message])

#ifdef DEBUG_LOG_TRACE
	#define Debug_LogTrace(message) Debug_Log_Impl(TRACE,message)
#else
	#define Debug_LogTrace(message)
#endif

Debug_LogTrace("");

_exit =
{
	endMission "END1";
};

It seems that the preprocessor flow control is ignored, and Debug_LogTrace("") is incorrectly expanded as nothing, creating an empty statement. The empty statement in itself is of course perfectly valid.

[SkaceKamen]

Oh, that makes sense. #ifdef is not yet supported, but the parser should accept the empty statement.

Could you move the last comment to the top, so it's clear what the issue is?