Pass Variable arguments from function to another with variable arguments - c++

Question

I have the following function that I shouldn't change to not break dependencies
void Trace(
__in DbgInfo dbgInfo,
__in_z _Printf_format_string_ const WCHAR* pwszMsgFormat,
...) {
// some code I need
};
I need it to call a function that also has ... args:
#define TRACE_LINE( format, ... ) _TRACE( LogLevelInfo ,format, __VA_ARGS__ )
#define _TRACE( mask, format, ... ) \
((mask) & g_LogLevel) \
? TraceGlobal::TraceLine( mask, L"[" __FILEW__ L":" _BLOB_WIDE(_BLOB_STRINGIZE(__LINE__)) L"] " L"MyService!" __FUNCTIONW__ L": " format , __VA_ARGS__ ) \
: (void)0
void
ServiceTracing::TraceGlobal::TraceLine(
_In_ LogLevel level,
_In_z_ PCWSTR format,
_In_ ...)
/**
Routine Description:
Trace a formatted line with Level tracing
Arguments:
level: enum level of trace line
format: the string format
...: the variable arguments to be formatted
Return value:
None
**/
{
ASSERT(format);
va_list args;
va_start(args, format);
// code does tracing
va_end(args);
}
how can I do that?
Inside the main Trace function above I tried this:
TRACE_LINE( pwszMsgFormat, __VA_ARGS__ );
this didn't work however and I got error:
syntax error : missing ')' before identifier 'pwszMsgFormat'
error C2059: syntax error : ')'
I am assuming because it is macro the __VA_ARGS__ it gives this error.
On the other hand I tried calling the TraceGlobal directly
va_list args;
va_start(args, pwszMsgFormat);
TraceGlobal::TraceLine(LogLevelInfo, pwszMsgFormat , args );
va_end(args);
this builds fine but I get Segmentation Fault / Access Violation in the tracing function because I also initialize va_list and use va_start in TraceLine
Is there a simple way I can just pass along the variable arguments from function to another. I don't want to change Trace function to Macro.