macro expansion and operator &&

Alan Modra amodra@gmail.com
Tue Aug 17 11:46:00 GMT 2010


On Tue, Aug 17, 2010 at 07:57:50AM +0100, Jan Beulich wrote:
> Are you sure it's x&yz?

No, silly me.  I didn't check.  x&yz is what you get without
--alternate.

> > That was the first thing I tried when looking into this problem.
> > gas/all/altmacro fails.
> 
> Wasn't that just because the .noaltmacro portion of the test
> incorrectly expects the & in the macro definition to be stripped?
> That may need to be changed if the sources get fixed.

It's not that '&' is a separator that should be stripped.  '&' starts
a macro parameter substitution, just as '\\' does.  So perhaps the
FIXME should say "document this feature".  :-)

-- 
Alan Modra
Australia Development Lab, IBM



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