From: Paul Eggert <eggert@cs.ucla.edu>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
Florian Weimer <fw@deneb.enyo.de>
Cc: Xiaoming Ni <nixiaoming@huawei.com>,
libc-alpha@sourceware.org, drepper.fsp@gmail.com, roland@gnu.org,
carlos@redhat.com, wangle6@huawei.com, yukeji@huawei.com
Subject: Re: [PATCH v2] stdlib: realpath use malloc replace __alloca to reduce stack overflow risks [BZ #26341]
Date: Tue, 11 Aug 2020 02:54:01 -0700 [thread overview]
Message-ID: <3da08d2a-71ca-83ca-0938-5569dbf0b548@cs.ucla.edu> (raw)
In-Reply-To: <9fe6ee87-129b-29fa-d9df-eca359bd866f@linaro.org>
On 8/10/20 6:40 AM, Adhemerval Zanella wrote:
> Could we remove alloca as well? We can make 4k stack usage on most cases use the
> extra 4k only where link are seeing the path.
Yes, the only "cost" of that is that the function will always use 4K (or
whatever) instead of typically using far less than 4K.
prev parent reply other threads:[~2020-08-11 9:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 10:16 Xiaoming Ni
2020-08-07 19:43 ` Adhemerval Zanella
2020-08-08 0:00 ` Paul Eggert
2020-08-08 9:14 ` Xiaoming Ni
2020-08-07 23:56 ` Paul Eggert
2020-08-08 8:54 ` Xiaoming Ni
2020-08-09 8:44 ` Paul Eggert
2020-08-09 12:38 ` Florian Weimer
2020-08-09 17:22 ` Paul Eggert
2020-08-10 13:40 ` Adhemerval Zanella
2020-08-11 9:54 ` Paul Eggert [this message]
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