Hello,
You should change the line
> warning, __FILE__, __LINE__, __FUNCTION__, ##msg) ;\
to
> warning, __FILE__, __LINE__, __FUNCTION__ , ##msg) ;\
This space (after __FUNCTION__) will do the trick.
You can read more about it in gcc info file (C Extensions/Macro Varargs),
where the issue is thoroughly explained:
This is a special feature of the GNU C preprocessor: `##' before a
rest argument that is empty discards the preceding sequence of
non-whitespace characters from the macro definition. (If another
macro argument precedes, none of it is discarded.)
Hope, this helps.
Vladimir
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