From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-workers@zsh.org
Subject: Re: [PATCH 3/3] Constify two local variables.
Date: Thu, 3 Dec 2015 16:36:17 -0800 [thread overview]
Message-ID: <151203163617.ZM13079@torch.brasslantern.com> (raw)
In-Reply-To: <20151203233719.GE1955@tarsus.local2>
On Dec 3, 11:37pm, Daniel Shahaf wrote:
} Subject: Re: [PATCH 3/3] Constify two local variables.
}
} Bart Schaefer wrote on Tue, Dec 01, 2015 at 17:11:21 -0800:
} > On Dec 2, 12:36am, Daniel Shahaf wrote:
} > }
} > } memcpy(dummy, vals, N)
} > } setfn(dummy)
} >
} > Would that memcpy() really work, or would it need to be zarrdup() to copy
} > each of the elements as well? Because e.g. arrsetfn() does freearray().
}
} I think it would work, because setarrvalue() in HEAD calls freearray()
} on the values array, implying that the individual elements are already
} permanently allocated.
That's exactly why I think it would NOT work! If you memcp() only the
pointers and then pass a new pointer-to-pointer into arrsetfn(), it's
going to call freearray() and discard all the individual pointers that
you intended would become the [re-used] elements.
prev parent reply other threads:[~2015-12-04 0:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-30 3:21 Daniel Shahaf
2015-11-30 9:38 ` Peter Stephenson
2015-11-30 15:59 ` Daniel Shahaf
2015-11-30 16:28 ` Bart Schaefer
2015-11-30 16:42 ` Peter Stephenson
2015-11-30 20:39 ` Bart Schaefer
2015-11-30 21:36 ` Bart Schaefer
2015-12-02 0:36 ` Daniel Shahaf
2015-12-02 1:11 ` Bart Schaefer
2015-12-03 23:37 ` Daniel Shahaf
2015-12-04 0:36 ` Bart Schaefer [this message]
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