sysdeps/unix/sysv/linux/lseek.c on ILP32 question

[Steve Ellcey]

On Tue, 2017-02-21 at 19:58 +0100, Andreas Schwab wrote:
>Â 
> > And I am not sure the conversion from offset to the two llseek
> > arguments is correct for both LP64 and ILP32 modes when offset is
> > negative.
> This isn't used for LP64, which won't have _llseek.
> 
> Andreas.

OK, that makes sense. Â But there is still a problem with the test.c
example I attached to the email (attached here too). Â I just tried this
on x86_64 and I get the same output difference that I see on aarch64.
Note that I am not even using the latest glibc, I am just using the
default one on my Ubuntu 16.04 system. Â Maybe my test case is bad?
If so, I don't see where the problem is.

Steve Ellcey
sellcey@cavium.com

x86 with -m64 prints:

fd = 3
val(1) = 0
val(2) = 40
val(3) = 0
val(4) = 40
val(5) = 0


x86 with -mx32 prints:

fd = 3
val(1) = 0
val(2) = 40
val(3) = 0
val(4) = 0
Gee, let's write something in the file!

fu�
41
val(5) = 0


Maybe my test case is bogus but I am not sure why.
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