Re: [Valgrind-users] cachegrind on Darwin

[Nicholas N. <n.n...@gm...>]

On Fri, May 29, 2009 at 8:43 PM, Luc Bourhis<luc...@ma...> wrote:
>
> --36548-- WARNING: unhandled syscall: 33554774
> --36548--            a.k.a.: 342
>
> That is to say:
>
> /usr/include/sys/syscall.h:#define      SYS_lstat64_extended 342
>
> I read through README_MISSING_SYSCALL_OR_IOCTL and I could probably write
> the necessary patch but I won't have time to even start before well into
> next week. Quite likely one of you will have done it by then!

I was just looking at this.  It's a tricky case, lstat64_extended()
has 4 arguments.  The first two are the same as lstat(), and are easy.
 But the last two are pointers, xsecurity and xsecurity_size, and I'm
having trouble working out how big are the buffers that they point to.

I think xsecurity_size points to a word-sized buffer, and that the
value in xsecurity_size is the size of xsecurity, and that
xsecurity_size is updated with the number of bytes written
(somewhere?) but I'm not completely sure.

Nick