Re: [Nasm-devel] on fix for BR3414012

[H. P. A. <hp...@zy...>]

On 10/02/2011 05:10 AM, Cyrill Gorcunov wrote:
> 
> Btw, while were looking into this bug I found an interesting
> thing -- if some macro expands to nothing we don't return empy
> term but TOK_WHITESPACE instead. This is wrong. (For this reason
> x264 codec is not compilable with nasm.) This term should be
> a composite entity and has some additional info such as 'ok,
> this term is whitespace due to exponasion to empty line' and
> in case if there
> 
> 	TOK_ID %+ TOK_WHITESPACE_DUE_TO_EXPANSION %+ TOK_ID
> 
> we would drop TOK_WHITESPACE_DUE_TO_EXPANSION and simply join
> TOK_ID+TOK_ID.
> 
> Not sure how to make it in better way at moment though.
> 

What if we let %+ absorb surrounding TOK_WHITESPACE, so the above
composites correctly?

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.