From: Yui NARUSE <naruse@...>
Date: 2012-02-03T17:08:47+09:00
Subject: [ruby-core:42342] [ruby-trunk - Bug #5963][Rejected] MacOS < 10.6 has no memalign


Issue #5963 has been updated by Yui NARUSE.

Status changed from Open to Rejected

We won't support Mac OS X 10.5 or prior on Ruby 2.0.0.
So it is WONTFIX.

We won't backport st_pool_allocation to 1.9.3, so it is also not a problem for us.

You can make a memalign function with mmap by allocating big area and strip the edge
if you want to backport locally.
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Bug #5963: MacOS < 10.6 has no memalign
https://bugs.ruby-lang.org/issues/5963

Author: Yura Sokolov
Status: Rejected
Priority: Normal
Assignee: 
Category: 
Target version: 2.0.0
ruby -v: ruby 2.0.0dev


I use definition of `aligned_malloc` from trunk in a st_pool_allocation patch for ruby_1_9_3,
and I have report from a man who has OS X 10.5.8 , that there is such error:

   pool_alloc.inc.h:55:2: error: #error no memalign function

It seems that OS X before 10.6 had no memalign or posix_memalign function.
Possibly `valloc` could be used with similar HEAP_ALIGN_LOG determination as done for OpenBSD in http://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/34404

As you can see, it is not possible to choose different version of MacOS here:
https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/posix_memalign.3.html




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