RetroBBS - comp.os.msdos.djgpp - memalign has problem with _align > 8

memalign has problem with _align > 8 - cause crash in OpenJPEG library

<6ebec8b4-2dd0-4e7c-92ed-2a72b8e0ad44n@googlegroups.com>

https://www.rocksolidbbs.com/devel/article-flat.php?id=390&group=comp.os.msdos.djgpp#390

copy link Newsgroups: comp.os.msdos.djgpp

X-Received: by 2002:a05:622a:1999:b0:40f:e2a5:3100 with SMTP id u25-20020a05622a199900b0040fe2a53100mr38791qtc.6.1694494052591;
Mon, 11 Sep 2023 21:47:32 -0700 (PDT)
X-Received: by 2002:a17:903:22cc:b0:1c3:1ceb:97b6 with SMTP id
y12-20020a17090322cc00b001c31ceb97b6mr4528040plg.7.1694494052135; Mon, 11 Sep
2023 21:47:32 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!diablo1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: comp.os.msdos.djgpp
Date: Mon, 11 Sep 2023 21:47:31 -0700 (PDT)
Injection-Info: google-groups.googlegroups.com; posting-host=89.176.63.76; posting-account=Q0wMHAoAAADjYrghh94FTf6YnbpTqZgp
NNTP-Posting-Host: 89.176.63.76
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <6ebec8b4-2dd0-4e7c-92ed-2a72b8e0ad44n@googlegroups.com>
Subject: memalign has problem with _align > 8 - cause crash in OpenJPEG library
From: rayer314@gmail.com (RayeR)
Injection-Date: Tue, 12 Sep 2023 04:47:32 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 1589

by: RayeR - Tue, 12 Sep 2023 04:47 UTC

Hi, I don't know if it's known bug or limitation, but i found this problem during compilation of OpenJPEG 1.5.0 library where demo programs crashed. After some fiddling I found that problem is in memalign() from current libc that OpenJPEG used with align argument of value 16. When I lower the align to 8 it worked then without crashing. I decided to use _mm_malloc() insteasd that works with align of value 16 OK.
It may cause problems with other code that use memalign() so can someone patch the code in libc?

Nonsense. Space is blue and birds fly through it. -- Heisenberg

devel / comp.os.msdos.djgpp / memalign has problem with _align > 8 - cause crash in OpenJPEG library

Subject	Author
memalign has problem with _align > 8 - cause crash in OpenJPEG library	RayeR