[Bug preprocessor/14331] please add option to suppress warning message "no newline at end of file"

["manu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #12 from manu at gcc dot gnu dot org  2007-03-28 00:21 -------
(In reply to comment #11)
> Manuel:  Yes, the patch is against 3.3 series, I didn't actually formally
> submit it but just posted it to the list when someone was in need of a patch. 
> See
> 
>           http://gcc.gnu.org/ml/gcc/2004-07/msg00798.html
> 
>   Before resubmitting I would /of course/ a) up-port to current mainline b) use
> the most appropriate of the current options-handling mechanisms and c) add
> testcases and docs.  Can you advise me what you think the best way to add the
> option is?  I particularly think I ought to avoid "manually copying a global
> in c_common_post_options" (as I wrote at url above).
> 

I was not criticizing your patch. Tom asked and I gave my opinion: that the
patch would need to be updated by someone (not necessarily you) before being
accepted.

To see the proper way to add the option look for endif_labels in c.opt and
c-opts.c. Notice that you don't need to define a global option anymore in
gcc/flags.h (although it seems that you still need it in
libcpp/include/cpplib.h). 

To keep current behaviour, you need to enable the option by default. If it were
a front-end option you would need to enable it in c.opt using Init(1) (see
other options in the same file). However, I don't think that setting affects
automatically CPP options, so probably you need to set the option in
libccp/init.c as you do in your original patch. Of course, you also need to
conditionalize the warning on the option, but your patch already does this. 

I hope this helps.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14331