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Re: [BUG] sigsegv

X-seq: zsh-workers 51714
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Sebastian Gniazdowski <sgniazdowski@xxxxxxxxx>, Zsh hackers list <zsh-workers@xxxxxxx>
Subject: Re: [BUG] sigsegv
Date: Thu, 4 May 2023 08:01:05 -0700
Archived-at: <https://zsh.org/workers/51714>
In-reply-to: <CAKc7PVDt6hS26DxC3hDE-ziMXm-K1jqbJXghynpp-ZhpdN_LLw@mail.gmail.com>
List-id: <zsh-workers.zsh.org>
References: <CAKc7PVDw98bvTSNWo4q52ZJ=i8vhRooKZHb-mOzenJVMoe1MFg@mail.gmail.com> <886115150.3264962.1682430985767@mail.virginmedia.com> <CAKc7PVC1Lm=iYHXM5MHSfOiGdHKdgD6nV1fnjn+-pok24Z5L_A@mail.gmail.com> <384683842.2892075.1682682065470@mail.virginmedia.com> <CAKc7PVC_guEKGwnEdqPrGodR2BaLNk3cXwYZyTcT6xpMy_-0aA@mail.gmail.com> <1209713483.9390210.1682691745248@mail.virginmedia.com> <CAKc7PVDV98OLcb+0QY7ANmkLdMOKV=TncgsOfZqa=Cmoap+yiw@mail.gmail.com> <9a4279398cabea525bb77662418ad536be7770bc.camel@ntlworld.com> <CAKc7PVAcu-GOZBStWzNprWP1D742c2R5oCWxGy5etbeuH5PWOw@mail.gmail.com> <216470072.2862464.1683131109933@mail.virginmedia.com> <CAH+w=7Z5jMAcbotEnbLhAiH4O5X2GUgydLi8_6qBNj4CDgJqQA@mail.gmail.com> <CAKc7PVDt6hS26DxC3hDE-ziMXm-K1jqbJXghynpp-ZhpdN_LLw@mail.gmail.com>

On Wed, May 3, 2023 at 2:20 PM Sebastian Gniazdowski
<sgniazdowski@xxxxxxxxx> wrote:
>
> On Wed, 3 May 2023 at 21:14, Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx> wrote:
> >
> > I don't suppose there's any chance that e-hstr is actually 4294935393 ?
> >
>
> I don'r know, bur I've checked (unpatched source):
>
> (gdb) p (unsigned int)(e-he->node.nam)
> $3 = 4294935397

What is "iw" in the loop at that point?  This is looking like an
integer overflow.

References:
- [BUG] sigsegv
  - From: Sebastian Gniazdowski
- Re: [BUG] sigsegv
  - From: Peter Stephenson
- Re: [BUG] sigsegv
  - From: Sebastian Gniazdowski
- Re: [BUG] sigsegv
  - From: Peter Stephenson
- Re: [BUG] sigsegv
  - From: Sebastian Gniazdowski
- Re: [BUG] sigsegv
  - From: Peter Stephenson
- Re: [BUG] sigsegv
  - From: Sebastian Gniazdowski
- Re: [BUG] sigsegv
  - From: Peter Stephenson
- Re: [BUG] sigsegv
  - From: Sebastian Gniazdowski
- Re: [BUG] sigsegv
  - From: Peter Stephenson
- Re: [BUG] sigsegv
  - From: Bart Schaefer

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