RFC: jc1, Windows and alloca built-in

[Robert Lipe]

Anthony Green wrote:

> jc1 was failing because TREE_TYPE() of the built-in alloca results in
> NULL.  My patch simply protects us from doing anything silly with that

I thought we officially didn't like built-in alloca any more?  If you're
needing something large enough from the stack that you can't get it,
perhaps an xmalloc is more appropriate regardless of our official taste.

RJL