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Subject: Re: [PATCH] Print die_hash2 for --odr --devel-dump-dies
From: Mark Wielaard <mark@klomp.org>
To: Tom de Vries <tdevries@suse.de>, dwz@sourceware.org, jakub@redhat.com
Cc: Mark Wielaard <mark@gcc.gnu.org>
Date: Thu, 18 Feb 2021 16:03:09 +0100
In-Reply-To: <20210215203416.GA29992@delia>
References: <20210215203416.GA29992@delia>
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Hi Tom,

On Mon, 2021-02-15 at 21:34 +0100, Tom de Vries wrote:
> For --odr, there's an additional hash value, die->u.p1.die_hash2.
>=20
> Print this with --devel-dump-dies, such that we have:
> ...
> $ dwz --devel-dump-dies --odr odr-struct
>   114 O f56004ac(cd46c7ab) f56004ac aaa structure_type
>   ...
>   1ba O f56004ac(cd46c7ab) f56004ac aaa structure_type
> ...
>=20
> Used to debug PR27400.
>=20
> Any comments?

Obviously this is useful.
But I always forget how to use these --devel flags.

They are only in the dwz-for-test binary, which isn't build by default,
and seems to have some subtle other differences, like undefining
__GNUC__?

Is there more documentation on the --devel flags/binary or is this just
meant for people directly hacking on dwz in the git repo?

Cheers,

Mark