[Bug preprocessor/19836] -E -dD includes predefined macros

[jason at catapult dot com]

------- Additional Comments From jason at catapult dot com  2005-02-09 23:50 -------
(In reply to comment #6)
> Subject: Re:  -E -dD includes predefined macros
> 
> jason at catapult dot com wrote:-
> 
> > Where did you read this?  This is what is written in the CPP and GCC manpages,
> > and the GCC online docs.
> > 
> > D - Like M except in two respects: it does not include the predefined macros,
> > and it outputs both the #define directives and the result of preprocessing. Both
> > kinds of output go to the standard output file. 
> > 
> > Neil, thanks for the suggestion, it removed all of them except for #define
> > __STDC_HOSTED__ 1, which I can take out with sed.
> 
> OK, so 2 bugs here then 8-)
> 

Maybe not.  The docs mention that "The standard predefined macros remain
defined.".  I guess it depend on what sort of predefined macro __STDC_HOSTED__ is.

Another problem with the -dD flag I've just found is that it includes the macros
predefined with the -D flag.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19836