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From Joe Orton <...@manyfish.co.uk>
Subject Re: mmap bug?
Date Thu, 27 Feb 2003 21:31:39 GMT
On Thu, Feb 27, 2003 at 02:35:51PM +0100, Sander Striker wrote:
...
> Is there a known issue with mmapping 0 sized files?
> 
> FYI, I'm on Linux 2.4.20, glibc 2.3.1.

>From a quick check, unless I'm screwing something up, it appears that
passing a zero length argument to mmap() doesn't work on several
platforms (nor does it make a whole lot of sense ;): Solaris and HP-UX
both return EINVAL from the the mmap call...

I'll ask our kernel guys about the Linux case, though I'd guess they'll
say it's undefined behaviour.

joe

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