Re: [Valgrind-developers] valgrind: r5114 - trunk/coregrind

[Nicholas N. <nj...@cs...>]

On Sun, 13 Nov 2005, Tom Hughes wrote:

> The problem is that pthread_cancel uses the tgkill system call
> to signal the other thread. Now sys_tgkill in the kernel sets
> si_code to SI_TKILL which is -6 and normally when that siginfo
> is later copied out to the signal handler the kernel masks off
> the top 16 bits and then sign extends the bottom 16 so the result
> in user space is still a negative value.
>
> The kernel actually casts si_code to short as it copies it out, just
> as my patch now does.

I saw you wrote a comment about this in the code... did it include the 
above info?

Nick