Re: [HACKERS] patch for memory overrun on Linux(i386) - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] patch for memory overrun on Linux(i386)
Date
Msg-id 199803220358.WAA02311@candle.pha.pa.us
Whole thread Raw
In response to Re: [HACKERS] patch for memory overrun on Linux(i386)  (The Hermit Hacker <scrappy@hub.org>)
Responses Re: [HACKERS] patch for memory overrun on Linux(i386)  (Marc Howard Zuckman <marc@fallon.classyad.com>)
Re: [HACKERS] patch for memory overrun on Linux(i386)  (dg@illustra.com (David Gould))
List pgsql-hackers
>
>
> Some things just require confirmation...can someone else (Thomas?) running
> Linux comment on this before I apply it?  I just find it kinda unexpected
> to see something that doesn't work for SCO doesn't work for Linux too :)

On BSDI, malloc man pages says:

     The allocated space is suitably aligned (after possible pointer coercion)
     for storage of any type of object.

I don't believe this is a standard, and I think Linux may not follow it.
I think I heard somewhere they don't.  We certainly need to have this
checked before use in a patch.


--
Bruce Momjian                          |  830 Blythe Avenue
maillist@candle.pha.pa.us              |  Drexel Hill, Pennsylvania 19026
  +  If your life is a hard drive,     |  (610) 353-9879(w)
  +  Christ can be your backup.        |  (610) 853-3000(h)

pgsql-hackers by date:

Previous
From: Bruce Momjian
Date:
Subject: Re: [HACKERS] Newest Patch...try this one...
Next
From: Bruce Momjian
Date:
Subject: Re: sched_yield()