From: Zack Weinberg <zack@codesourcery.com>
To: Geoffrey Keating <geoffk@geoffk.org>
Cc: gcc@gcc.gnu.org
Subject: Re: GTY and const
Date: Tue, 21 Dec 2004 19:01:00 -0000 [thread overview]
Message-ID: <877jnbiih7.fsf@codesourcery.com> (raw)
In-Reply-To: <m2652vbj7w.fsf@greed.local> (Geoffrey Keating's message of "21 Dec 2004 10:26:59 -0800")
Geoffrey Keating <geoffk@geoffk.org> writes:
>> > Would it be better to add a cast around the assignment or to make
>> > the GTY code handle const members?
>>
>> I'd prefer that you improved gengtype.
>
> It's not gengtype, the problem really is that you cannot have const
> GCed memory, for the same underlying reasons that you cannot free() a
> const pointer.
No, that's just plain not true. cpplib makes extensive use of 'const'
to indicate write-once data structures (they are initialized through a
non-const pointer, of course). Those definitely can be GC memory.
zw
next prev parent reply other threads:[~2004-12-21 19:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-14 7:00 Matt Kraai
2004-12-14 10:30 ` Steven Bosscher
2004-12-14 18:35 ` Zack Weinberg
2004-12-21 18:26 ` Geoffrey Keating
2004-12-21 19:01 ` Zack Weinberg [this message]
2004-12-22 23:11 ` Daniel Berlin
2004-12-22 23:24 ` Zack Weinberg
2004-12-23 3:43 ` Geoff Keating
2004-12-23 5:15 ` Zack Weinberg
2004-12-23 5:39 ` Daniel Berlin
[not found] <1103776856.24215.ezmlm@gcc.gnu.org>
2004-12-23 17:09 ` Lucas (a.k.a T-Bird or bsdfan3)
2004-12-23 20:04 ` Robert Dewar
2004-12-24 2:32 ` Marc Espie
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