🚀 go-pugleaf

In article <371@necssd.NEC.COM> harrison@necssd.NEC.COM (Mark Harrison) writes:
>[Karl Heuer writes:]
>>The contents [of #if...#endif] are still lexed into C tokens, which is why
>>it's also illegal to say   #if 0...The compiler won't like this...#endif
>
>Are you sure about this?  I tried your example, and it both compiled and
>linted.

Yes, I'm sure.  You just happen to be using a preprocessor that chooses to
recover from the error of an unterminated character constant by silently
resetting the lexical state at the newline.

>If this is true, then the following should also not work:
>	#if MICROSOFT
>	extern far char * x;  /* however it's done */
>	#endif
>	#if VMS
>	extern char * x$something;  /* however it's done */
>	#endif

Does not follow.  The tokenizing that continues to occur through excluded code
is the same as normal; it sees the `/*...*/' as a comment.

The `$' is a more interesting case, but I'll factor it out into a separate
article.

Karl W. Z. Heuer (karl@ima.ima.isc.com or harvard!ima!karl), The Walking Lint