From: Nobuyoshi Nakada <nobu@...>
Date: 2008-04-01T03:27:51+09:00
Subject: Re: some Enumerable methods slower in 1.9 on OS X after revision 15124

Hi,

At Mon, 31 Mar 2008 22:07:03 +0900,
Paul Brannan wrote in [ruby-core:16086]:
> Also, I wonder if there is any benefit to __builtin_setjmp instead of 
> _setjmp?

Unfortunately,

  error: '__builtin_longjmp' second argument must be 1

it seems not be able to pass a variable.  And combination with
_longjmp caused SEGV.

> Also, just thinking, I wonder how hard it would be to make use of dwarf2 
> exceptions on gcc via unwind.h?

How faster is it?

> (I think the API is described here: 
> http://www.ucw.cz/~hubicka/papers/abi/node25.html)

I wonder if it works systems other than ``provided by any AMD64
psABI-compliant system.''

-- 
Nobu Nakada