Patch: make struct case_node in stmt.c use pool instead of GC

[Ian Lance Taylor]

"Laurynas Biveinis" <laurynas.biveinis@gmail.com> writes:

> 2007-09-04  Laurynas Biveinis  <laurynas.biveinis@gmail.com>
> 
>     * Makefile.in (stmt.o):  Add alloc-pool.h dependency.
>     * stmt.c:  Include alloc-pool.h.
>     (struct case_node):  Remove GTY marker.
>     (add_case_node):  New parameter case_node_pool.  Use it for
>     allocation of r.
>     (expand_case):  New allocation pool case_node_pool.  Initialize it,
>     pass to add_case_node and free it.

It's not obvious that this consistently frees the alloc_pool that it
creates.  In particular it's possible for expand_case to return
early.  I think it would be clearer if you only free the alloc_pool at
the end of the function and at the return statement.

The patch is approved with that change.

Thanks.

:REVIEWMAIL:

Ian