Mainline failed to bootstrap on Linux/x86

[Richard Kenner]

> +===========================GNAT BUG DETECTED==============================+
> | 3.4 20030430 (experimental) (i686-pc-linux-gnu) GCC error:               |
> | in tree_low_cst, at tree.c:3274                                          |
> | Error detected at /net/gnu/export/gnu/src/gcc/gcc/gcc/ada/types.ads:183:59|

    which is something like char[INT_MAX+1] which looks not obvious to
    handle, can't say which patch or combining of patches cause the
    problem yet.

Probably my recent stor-layout.c patch.  I'm trying to create an
environment to look at this.  The fix to this sort of thing is
usually trivial.