From: Peter Stephenson <pws@ibmth.df.unipi.it>
To: zsh-workers@sunsite.auc.dk
Subject: PATCH: pws-21: Re: BUG: 3.1.5-pws-21: lfs
Date: Mon, 14 Jun 1999 18:36:24 +0200 [thread overview]
Message-ID: <9906141636.AA30981@ibmth.df.unipi.it> (raw)
In-Reply-To: "Geoff Wing"'s message of "14 Jun 1999 08:49:36 NFT." <slrn7m9gh0.r33.mason@coral.primenet.com.au>
Geoff Wing wrote:
> Peter Stephenson <pws@ibmth.df.unipi.it> typed:
> :Geoff Wing wrote:
> :> :I get a near continuous spew out of:
> :> : BUG: attempt to free storage at invalid address
>
> First time through malloc():
> (m = sbrk(4096)) @ mem.c:760 gives m = 0x53b24
Ahaahaaha. See if this works. It's probably got too many casts 'n' stuff
but I wanted it to be not too unsafe. There are a few assumptions anyway,
but this time it looks like we're stuck with turning a pointer into an
integer.
--- Src/mem.c.sbrk Wed Jun 9 16:18:04 1999
+++ Src/mem.c Mon Jun 14 18:30:34 1999
@@ -777,6 +777,7 @@
for (mp = NULL, m = m_free; m && m->len < size; mp = m, m = m->next);
}
if (!m) {
+ long nal;
/* no matching free block was found, we have to request new
memory from the system */
n = (size + M_HSIZE + M_ALLOC + m_pgsz - 1) & ~(m_pgsz - 1);
@@ -785,6 +786,14 @@
DPUTS(1, "MEM: allocation error at sbrk.");
unqueue_signals();
return NULL;
+ }
+ if ((nal = ((long)(char *)m) & (M_ALIGN-1))) {
+ if ((char *)sbrk(M_ALIGN - nal) == (char *)-1) {
+ DPUTS(1, "MEM: allocation error at sbrk.");
+ unqueue_signals();
+ return NULL;
+ }
+ m = (struct m_hdr *) ((char *)m + (M_ALIGN - nal));
}
/* set m_low, for the check in free() */
if (!m_low)
--
Peter Stephenson <pws@ibmth.df.unipi.it> Tel: +39 050 844536
WWW: http://www.ifh.de/~pws/
Dipartimento di Fisica, Via Buonarroti 2, 56127 Pisa, Italy
next prev parent reply other threads:[~1999-06-14 17:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-06-13 10:51 Geoff Wing
1999-06-14 8:08 ` Geoff Wing
1999-06-14 7:49 ` Peter Stephenson
1999-06-14 8:28 ` Geoff Wing
1999-06-14 8:49 ` Geoff Wing
1999-06-14 16:36 ` Peter Stephenson [this message]
1999-06-15 4:06 ` PATCH: pws-21: " Geoff Wing
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9906141636.AA30981@ibmth.df.unipi.it \
--to=pws@ibmth.df.unipi.it \
--cc=zsh-workers@sunsite.auc.dk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).