[Date Prev][Date Next][Thread Prev][Thread Next]
- Subject: Re: [ANN] LuaJIT x64 port sponsorship program
- From: Tony Finch <dot@...>
- Date: Wed, 3 Feb 2010 19:03:14 +0000
On Wed, 3 Feb 2010, Patrick Donnelly wrote:
> On Tue, Feb 2, 2010 at 12:30 PM, Mike Pall <email@example.com> wrote:
> > What really counts is commonly accepted usage. So, while I can buy
> > the need for MAP_FAILED et al, any reasonable Lua/C binding ought
> > to convert this to nil or throw an error.
> What about "sentinel" defined values like those in the socket
> libraries. On my GNU system:
> #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
> I'm not sure why someone would want to push a SIG_ERR lightuserdata
> but I imagine it could come up.
SIG_ERR ought to be converted to nil just like MAP_FAILED, and
PTHREAD_CANCELLED too, I think. I don't know of any odd pointer values in
the sockets API. There are some funny RTLD_* and fenv.h FE_* pointer
values on some systems. And I think that's about it for core Unix APIs.
f.anthony.n.finch <firstname.lastname@example.org> http://dotat.at/
GERMAN BIGHT HUMBER: SOUTHWEST 5 TO 7. MODERATE OR ROUGH. SQUALLY SHOWERS.
MODERATE OR GOOD.